Answer:Down syndrome
Explanation:
Numerical disorders occur when there is a change in the number of chromosomes (more or fewer than 46). Examples of numerical disorders include trisomy, monosomy and triploidy. Probably one of the most well-known numerical disorders is Down syndrome (trisomy 21)
cellular respiration mind map
Answer:
first, let's begin with plants they take in sunlight, water, and carbon then they turn that into glucose a by-product is oxygen so oxygen is released as the process of photosynthesis after you have that then we can get to animal process the animal breaths in give the lungs oxygen from the plants as the animal uses the oxygen it turns it into a by-product as well normally carbon we do this just to make ATP to function and you can feel how bad it is when your muscle cells don't have oxygen fully.
Explanation:
sunlight, water, and carbon are absorbed by a plant to make glucose then the animal absorbs the oxygen to do basic functions and release carbon and the process begins anew.
In the Miller-Urey experiment, electrical sparks were passed through a mixture of gases, including hydrogen, water vapor, methane, and ammonia. These gases were thought to be present in the atmosphere of early Earth. The results showed that the gases reacted to form amino acids, which are the building blocks of proteins. Which conclusion about the origin of life on Earth is MOST STRONGLY supported by the Miller-Urey experiment?
A. All organic molecules, including amino acids, were produced from chemical reactions on early Earth.
B. Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth.
C. Complex organic molecules, such as proteins, could not have been produced from chemical reactions on early Earth.
D. Complex organic molecules, such as proteins, could have been produced from chemical reactions on early Earth.
Answer:
B - Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth
Explanation:
The Miller-Urey experiment was a chemical experiment that attempted to recreate the chemical conditions present on early earth, and used these conditions to try to decipher how life on earth came about.
Their experiment showed that simple organic compounds (i.e. amino acids) that represent the building blocks of complex macromolecules (i.e. proteins) could be formed from this experimental set up with the addition of energy. This showed the minimal features required to form life.
The answer is B
Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth.
Predict the fur color of the offspring of a brown heterozygous rabbit and a white homozygous rabbit. Brown is dominant and white is recessive. Use B for dominant and b for recessive.
What are the genotypes and phenotypes of the new generation?
What are the percentages of brown and white rabbits?
Answer:
To predict the results of the offspring from a cross between brown heterozygous rabbit and a white homozygous rabbit, a punnet square can be drawn as follows:
b b
B Bb Bb
b bb bb
The results from the punnet square show that there is 2:2 ratio that the offspring will be brown coloured or white coloured. The genotype of the rabbits will either be heterozygous brown i.e Bb or homozygous white bb.
there is a 50% chance that the offspring will be brown rabbit and there is also a 50% chance that the offspring can be a white rabbit.
For the offspring produced, the genotypes are Bb and bb; the phenotypes are two brown and two white; while the percentage of brown and white rabbits is 50% each.
What are genotypes and phenotypes?Genotype refers to the sum total of the genetic composition of an organisms.
Phenotype refers to the physical expression of the genotype of an organism.
The cross is shown below:
Bb × bb = Bb, Bb, bb and bb
The genotypes are Bb and bb
The phenotype is two brown and two white.
The percentage of brown and white rabbits is 50% each.
Therefore, the genotype and phenotype of the the offspring are based on the dominant and recessive traits inherited from parents.
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codominant traits in humans
Answer AND Explanation:
In man, codominance is seen in the inheritance of the ABO blood group alleles. the trait is controlled by more than two alleles for the same gene within a population. Such alleles are called multiple alleles and they occupy the same locus on homologous chromosomes.
Sickle cell anaemia is a disease of the humans which is inherited in an incomplete dominance way. The disease is transmitted through a recessive gene that leads to the synthesis of abnormal haemoglobin. In sickle cell anemia patients, haemoglobin A is entirely replaced by a different type called haemoglobin S.
Usually expressed as a fraction, this is way of showing the relative size of two numbers, as when 24/30 is written as 4/5, meaning 24 has as many groups of 4 as 30 has groups of 5.
Answer:
The answer is "ratio"
Explanation:
Ratio is the quantitative relationship between the two figure that depicts that how many times that one figure is there in the another one. In order to get the ratio usually we multiply or divide the that term in the ratio by the same number. In case let us take an example if we divide the terms in the ratio 2:4 by the number 2, then we will able to get a number of or the equal ratio of 1:2. We can also say that it is comparison between the numbers.
The student is asking about simplifying fractions, which allows us to express the relative size of two numbers. Simplifying fractions involves finding the greatest common divisor and is a fundamental skill in math that also relates to understanding ratios, proportions, percentages, and unit rates.
Explanation:The subject of the question is related to understanding the concept of expressing the relative size of two numbers with the use of a fraction or a ratio. When the question notes that 24/30 is written as 4/5, it explains that the number 24 contains as many groups of 4 as the number 30 contains groups of 5. This is an example of simplifying a fraction by finding the greatest common divisor and dividing both the numerator and denominator by it, which is an essential skill in mathematics.
Fractions represent a part of a whole and are composed of a numerator and a denominator. Ratios, which can also be expressed as fractions or percentages, show the relative sizes or quantities compared to another, such as 2:1 or 4:3. A percent is a special type of ratio where the denominator is 100, commonly used in calculations involving percentages.
Proportions, unit rates, and unit scales are related concepts in mathematics that involve ratios and fractions. A proportion is an equation stating that two ratios are equivalent, and a unit rate compares two measurements with one of them being a single unit. A unit scale is especially useful in real-life applications like reading maps where it compares actual object dimensions to model dimensions.
11. Under what conditions can spontaneous recovery occur?
A) As a result of latent learning
B) When the conditioned stimulus starts again
C) After systematic desensitization
D) When the unconditioned stimulus is extinguished
Spontaneous recovery in classical conditioning occurs when a conditioned stimulus is reintroduced after a rest period and the previously extinguished conditioned response reemerges.
Explanation:Spontaneous recovery can occur under specific conditions within the domain of classical conditioning. After a conditioned response has been extinguished through the process of presenting the conditioned stimulus without the unconditioned stimulus, spontaneous recovery may take place. If there is a rest period following extinction, the introduction of the conditioned stimulus again can lead to a sudden reappearance of the conditioned response. This phenomenon is not due to latent learning or systematic desensitization, nor is it related to the extinguishing of the unconditioned stimulus. Instead, it is directly tied to the reappearance of the conditioned stimulus after a period of time. Spontaneous recovery shows that the association between the conditioned and unconditioned stimuli is not completely erased during extinction but has weakened and can be quickly relearned.
The bases are paired by ____ bonds along the axis of the molecule.
Answer:
Hydrogen bonds
Explanation:
Hydrogen bonds
Via the hydrogen bonds all the nitrogenous bvases are joined to each other via two or three hydrogen bonds. The bases are paired by hydrogen bonds along the axis of the molecule.
What is the atomic number of hydrogen ?Hydrogen is the first element of periodic table and its atomic number is 1.
The bases are joined by hydrogen bonds. A that stands for adenine is joined to T that stands for thymine and the bonds between adenine and thymine is 2 and on the other hand C that stands for cytosine binds to G that stands for guanine.
In the structure of RNA, T that stands for thymine gets replaced with U that stands for uracil and this is having same bonds number between the nitrogenous bases as well.
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Why would farmers want to farm near rivers even with the potential of the river flooding?
Answer:
“Climate change adaptation”is used to describe a process,an outcome, a concept, or a goal.
Explanation:
Which type of transport requires energy to move molecules from an area of lower
concentration to an area of higher concentration?
Answer:
active
Explanation:
Using energy, active transport is the process of moving materials into, out of, and between cells.
What is active transport?Passive transport, which utilizes no energy, can be used in some circumstances to move substances. The cell must frequently move elements against their gradient of concentration, though. Active transportation is necessary in these situations.
Most frequently, a transport protein that attaches to the chemical known as adenosine triphosphate, the cell's "fuel," changes shape to carry out active transport (ATP).
In some circumstances, energy-free passive transport can be used to achieve this.
Therefore, the cell frequently needs to transfer an object against its concentration gradient. Active transportation is necessary in these situations.
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write a note on animelia and all the characteristics, feature and diagram
Answer:
Animalia is considered as the largest kingdom and most diverse group of organisms.
Explanation:
Animalia is the most diverse group of living organism with the distinct habitat on the Earth.Their characteristic features are ;Multi cellular : made up of multiple cells.Heterotrophic: find their food by themselves (the organism of animalia kingdom cannot prepare their food by themselves).Eukaryotes: made up of complex eukaryotic cells. Lacking cell wall: do not contain any cell wall like plants.Biological evolution is sometimes a controversial topic among people. explain why you think this is sometimes controversial
Answer:
Explained below
Explanation:
Evolution by natural selection is started when cellular forms of life with differences in metabolic capability originated on earth. Biological evolution is sometimes controversial because many religious beliefs do not depend on evidence gathered from natural world. When DNA is being copied, mistakes in the copying process produce new DNA sequence. These new sequence acts as Evolutionary experiment. So biological evolution depend on true evidences and religious beliefs depend on faith.
How are antibiotics able to target the bacteria cells but not the healthy cells within your body?
Antibiotics target cells based on the morphology.
Antibiotics target special protein and lipid receptors on the cell walls of bacteria.
Antibiotics target cells with chemical and UV damage.
Healthy cells lack the endospores that antibiotics target.
Answer: is Antibiotics target special protein and lipid receptors on the cell walls of bacteria.
Explanation:
Human cell do not contain cell wall. Cell wall is the outer layer present outside the cell membrane in plants, bacteria, and fungi. Cell wall present in plants, bacteria and fungi give extra protection to the cell. Antibiotics helps to stop the bacteria from building a cell wall. Antibiotics contain penicillin which works against bacteria cell to form a cell wall. In bacteria protein synthesis is essential part of cell, there are many antibiotics which stops the process of protein synthesis by cutting the protein chain in bacteria cell to stops it's further growth to make it difficult to sustain.
The correct option is A. Antibiotics target cells based on morphology. Antibiotics target bacterial cells by exploiting structural differences, such as the presence of peptidoglycan in bacterial cell walls and differences in ribosome structures.
Antibiotics are able to target bacterial cells without harming healthy human cells primarily due to the differences between prokaryotic and eukaryotic cells. One key aspect is the presence of peptidoglycan in bacterial cell walls, which is absent in human cells. Many antibiotics, such as penicillins and cephalosporins, work by interfering with the synthesis of peptidoglycan, weakening the bacterial cell wall and leading to cell lysis.Additionally, antibiotics like macrolides and tetracyclines target the bacterial ribosome, which is structurally different from the ribosome found in human cells. These antibiotics can inhibit protein synthesis in bacteria without affecting human cells. Therefore, the specificity of antibiotics for bacterial structures ensures that they can effectively target bacterial infections while sparing human cells.Thus the correct option is A. Antibiotics target cells based on the morphology.
Why would farmers want to farm near rivers even with the potential of the river flooding???????????
Answer:
The answer is to increase crop growth.
Explanation:
Farmers construct a man made channel leading water from the river to their crops. When farming near rivers the soil is good enough for planting. Many bugs animals poop their which help grow the plants and they are watered daily. After you plant the crops you are basically done. And the River is a Natural source of water so their are no worries of daily watering because nature is doing it for you. Even tho flooding can happen they have sand bags and walls that they set up to control this.
1 Point
What happens during prophase?
O
A. Chromosomes condense, and mitotic spindles form.
O
B. Chromosomes are copied, and the nuclear membrane disappears.
O
c. Spindle fibers pull the sister chromatids apart,
O
D. Nuclear membranes form around two sets of chromosomes.
SUBMIT
During Prophase chromosomes condense, and mitotic spindle form, chromosomes are copied, and the nuclear membrane disappears, spindle fibres pull the sister chromatids apart.
Explanation:
Prophase is divided into 2 sub-phases as early Prophase and late prophase.
Early Prophase:
In early prophase distinct thick chromosome like structures, Centrioles move to the opposite poles and, nuclear membrane disappears
By late prophase:
Astral rays and spindle fibres are formed. Spindle fibres attach to the chromosome. Contractions occur in the attachment and sister chromatids are pull apart towards the equator.
Metaphase will follow the prophase.
Which factor might an editor consider when trying to judge the validity of a scientific report submitted for publication?
(Select all that apply)
A) If the report is well organized
B) If the sources used are peer reviewed
C) If the writing shows evidence of scientific thinking
D) If the writing is based on sound evidence
Answer:
The correct options are
B) If the sources used are peer reviewed
D) If the writing is based on sound evidence
Explanation:
To check whether a scientific report is valid or not, one must determine whether the results deduced from its experiments were accurate and true or not. If the writing provides sound evidence for its experiments to be true and not biased, then the editor will most likely publish it. A report that is supported by peer reviews will be the best to publish as the data in it will be considered to be more authentic and accurate. Hence, option B and D will be true.
Answer:
It is all four
Explanation:
A) If the report is well organized
B) If the sources used are peer reviewed
C) If the writing shows evidence of scientific thinking
D) If the writing is based on sound evidence
you are given samples of the substances shown in the table the samples are labeled a b c at room temperature sample a is a solid sample B is a liquid and sample c is a gas what are the identity samples a b c hint room temperature is about 20°C
Answer:
The sample a which is solid at 20°C is "Iodine"
The sample b which is liquid at 20°C is "Bromine"
The sample c which is gas at 20°C is "Chlorine"
Explanation:
Iodine : It starts melting at 113.7°C, so the solid sample found is the iodine. Iodine is present in both solid as well as in vapor state. Basically it is kept in closed jars. Only when it reaches the temperature above the melting point is starts melting.
Bromine: It is a non metallic element that is present in the liquid state, being a member of halogen group. It is heavy, mobile and dangerous reddish brown liquid. It is corrosive in nature, when comes in contact with human tissue and causes irritation in eye when comes in contact with its vapor.
Chlorine: In room temperature it is gas, as it has weak intermolecular interaction which fails to keep the molecules closely attached.
The physical state of a substance at room temperature depends on its atomic or molecular properties. From the given information, Sample A could be Iodine (solid), Sample B could be Bromine (liquid), and Sample C could be Chlorine (gas). However, the actual identity of the samples could vary and rely on knowing the physical state of various elements and compounds at room temperature.
Explanation:The nature of substances at room temperature, typically around 20°C, determines whether substances are solid, liquid, or gas. For instance, the nature of certain substances at room temperature is as follows:
Iodine (I2) is a solid Bromine (Br2) is a liquid Chlorine (Cl2) is a gas
From this information, we can infer that sample A (solid at room temperature) could be Iodine, sample B (liquid at room temperature) could be Bromine and sample C (gas at room temperature) could be Chlorine.
Note that this is a general example, the actual identity of the samples can vary as many substances can exist as solids, liquids, and gases at room temperature. The key to identifying the samples is understanding the physical states of elements and compounds at room temperature.
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Before mitosis can occur, DNA replication must occur. This DNA replication results in 2 identical copies of the DNA joined at the centromere. During Anaphase of mitosis, these identical copies of DNA, called ____________, are pulled apart to opposite poles of the cell.
A) Genes
B) chromatin
C) sister chromatids
D) daughter chromatids
Answer:
i think there genes, or chromatins.
Explanation:
2. (2 pts) According to the cladogram, which organisms develop in an “amniotic egg”?
Crocodiles and Birds
Primates and Rodents/Rabbits
Primates, Rodents/Rabbits, Crocodiles, Birds
Amphibians, Primates, Rodents/Rabbits, Crocodiles, Birds
The organisms that develop in an amniotic egg, as indicated by a cladogram, would generally be Crocodiles and Birds. This is due to the evolutionary significance of an amniotic egg, enabling survival in dryer environments, a characteristic found in reptiles and birds.
Explanation:Based on the typical organization of a cladogram, the organisms that develop in an amniotic egg would be Crocodiles and Birds. The amniotic egg is significant in biological evolution, as it allows the egg to survive in dryer environments. This type of egg is common among reptiles and birds, which includes crocodiles. Primates and rodents/rabbits, on the other hand, are mammals and do not lay eggs. Amphibians also lay eggs, but their eggs do not have an amnion. Thus, they are not considered as amniotic egg developers.
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Why are some rivers still able to flow during times of drought???????
Answer:
"Due to the increased temperature the snow starts melting and more water gets deposited in the upstream that flows downwards" as a result of which rivers flow in drought condition.
Explanation:
During hotter days, snows begins to melt hence the river gets more water when compared to the other seasons of the year. But in some case the rivers only rely on the rainfall which often gets dry due to lack of proper rainfall. In some cases it has also been seen that, in spite of low rainfall the river still continue to flow because of the presence of more water in the upstream that begins to flow towards the downward stream having larger basins.
What does the pulmonary vein do?
A. Brings blood from the heart to the lungs
O
B. Brings blood from the liver to the heart
D
C. Brings blood from the lungs to the heart
D. Brings blood from the heart to the liver
Answer:
it would be
Explanation:
C.
Final answer:
The pulmonary vein carries oxygenated blood from the lungs back to the heart. It is part of the pulmonary circulation that includes the heart and lungs, ensuring the blood becomes oxygenated before being pumped to the rest of the body.
Explanation:
The pulmonary vein performs a vital function in the human body's circulatory system. Specifically, option C is correct: it brings oxygenated blood from the lungs to the heart. Unlike other veins, the pulmonary veins are unique in that they carry oxygen-rich blood. The pathway of blood through the heart and to the body is critical to understand, especially when considering the pulmonary and systemic circuits. The pulmonary circulation is a section of the circulatory system which solely involves the heart and lungs. The right ventricle of the heart pumps deoxygenated blood into the right and left pulmonary arteries, which then transport this blood to the lungs where it becomes oxygenated. The oxygen-rich blood returns to the heart via the pulmonary veins, specifically the right and left pulmonary veins, which enter the left atrium of the heart.
The correct order of how blood flows from the heart out to the body and back again follows this sequence: The blood exits the heart through the aorta, travels through arteries, moves into capillaries, progresses through venules, and returns via veins.
Why do animals such as a hedgehog
hibernate during the cold winter
months?
Answer:
To reduce heat loss
Explanation:
During cold weather, small animals like hedgehog survive by hibernating. During hibernation, the hedgehog go into a deep sleep and the metabolic rate falls to the minimum required for maintaining the vital activities of the cells. The body temperature is maintained at a lower level typically at about 18 c. These reduces heat loss.
The upper region of the dermis is characterized by parallel rows of tiny bumps known as:
A) Dermal papillae
B) Stratum corneum
C) Stratum germinativum
D) Blisters
The upper region of the dermis characterized by parallel rows of tiny bumps is known as dermal papillae. So the correct option is A.
What are the layers of skin?
Skin is the largest organ of the body. It protects against various agents including abnormalities of the temperature, germs, etc. It also helps in identifying the feeling of tactile sensations.
There are three layers of tissue that form the skin. These are
Epidermis - top layer Dermis - middle layer Hypodermis - bottom layer
The epidermis cells are majorly made up of the protein keratin. The dermis layer is the thickest layer forming 90% of the skin. The hypodermis is majorly made by fatty tissues.
The dermis layer is richly supplied with blood vessels, connective tissues, sweat glands, hair follicles, etc.
It has two main layers. The upper layer is called the dermal papillae and the lower layer is called the reticular dermis.
Therefore the correct option is A.
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The energy acquired in the light-dependent reactions is used in the light-independent reactions to build glucose molecules. How is this energy transferred from light-dependent to light-independent reactions?
Question 9 options:
in the bonds of ATP and NADPH molecules
in the bonds of 5-carbon ribulose molecules
in the bonds of 3-carbon phosphoglycerate molecules
in the bonds of carbon dioxide molecules
Answer:
The energy obtained in light independent molecules are depend on ATP and NADPH to produce glucose from carbon dioxide molecule.
Explanation:
Photosynthesis is a process done by plants that have 2 stages - Light dependent reaction and Light independent reaction (Calvin cycle). In light dependent reaction,the light energy is converted into chemical energy with the help of ATP (adenosine triphosphate) and NADPH ( nicotinamide adenine dinucleotide phosphate) which is used in Calvin cycle that uses those energy obtained from light dependent reaction and produce glucose with the help of carbon dioxide.Steps-(Light dependent reaction)
Chlorophyll absorb sunlight⇒convert it into chemical energy⇒formation of ATP & NADPH
(Light independent reaction)
ATP+NADPH+ Carbon dioxide= Carbohydrate(Glucose)
what is the role of RNA in protein production
Answer:
Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains. They also bind tRNAs and various accessory molecules necessary for protein synthesis.
Explanation:
The fundamental role of RNA in protein synthesis is to create proteins via translation. It carries genetic information that is translated by ribosomes into various proteins necessary for cellular processes.
What is Protein synthesis?Protein synthesis may be defined as the process through which cells construct proteins. It takes place in two stages. They significantly include transcription and translation. It balances the loss of cellular proteins through the production of new proteins.
Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. While translation is the methodology through which a cell makes proteins using the genetic information carried in messenger RNA (mRNA). mRNA, rRNA, and tRNA are the three main types of RNA involved in protein synthesis.
Therefore, the fundamental role of RNA in protein synthesis is to create proteins via translation.
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A fire burns an oak forest down to bare ground. Over the next 150 years, if the climate remains constant, this area will most likely A) remain bare ground B) return to an oak forest C) become a rain forest D) reclaim
The correct answer is option B) return to an oak forest.
What is the oak tree famous for?
Oak trees produce acorns once a year which ripens in autumn. Oak trees may start producing acorns when they are about 20 years old. A mature oak may produce 90,000 acorns a year; this is several million in its lifetime.
Why are oak trees unique?Oak trees are unique because of their fruit, the acorn, which is key in identifying oak species. They are known for being multi-trunked and growing wide canopies with sprawling, scraggly branches.
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Which process releases the greatest amount of ATP?
Question 12 options:
alcoholic fermentation
cellular respiration
lactic-acid cycle
photosynthesis
cellular respiration releases the greatest amount of energy or ATP.
Explanation:
In cellular respiration 38 ATPs in the process. 4 molecules of ATP are formed in glycolysis, 32 molecules in Oxidative phosphorylation.
alcoholic fermentation: 2 ATP is formed
lactic acid cycle: 2 ATP is formed
photosynthesis: does not produce ATP instead ATP formed from the glucose formed is used in the process.
Cellular respiration (correct answer)releases the greatest amount of ATP. Compared to alcoholic fermentation, the lactic-acid cycle, and photosynthesis, it is the most efficient process for ATP production.
Explanation:The process that releases the greatest amount of ATP is cellular respiration(correct answer). Cellular respiration is a set of metabolic processes that take place within the cells of organisms to convert biochemical energy from nutrients into ATP, and then release waste products. The reactions involved in respiration are catabolic reactions, which break down large molecules into smaller ones, releasing energy in the process.
Alcoholic fermentation, the lactic-acid cycle, and photosynthesis all produce ATP, but not as much as cellular respiration. Alcoholic fermentation and the lactic-acid cycle are both anaerobic processes, which do not use oxygen and consequently generate ATP less efficiently. Photosynthesis, while crucial to life on Earth, consumes energy to build complex molecules and supports the energy needs of cells indirectly.
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Recombinant DNA uses what medium to produce new genes?
The genetic characteristic of two different organisms are induced into a new host organism for the purpose of producing new genes.
Explanation:
In the field of bio technology, Recombinant DNA technology plays a very important role. This helps in the production of genes. The first thing insulin of human was produced with this technology. In this technology, the gene that is to be produced is cut and it is placed inside a host organism where it gets multiplied.
This technology uses five steps in gene production. Firstly, the DNA that is essential will be cut. this is done by restriction site. PCR is used secondly in order to amplify the copies of the genes. Then these are induced into Vectors after which they will again be introduced into a host organism. Then finally the results will be the genes of the desired characteristics.
DNA is located in the ____of a cell
Answer:
nucleus
Explanation:
Answer:
DNA is located in the nucleus of the cell
People have always had questions about the world around
them. The goal of
is to answer these questions
by obtaining and analysing evidence.
Answer:
Yes, man has been curious about the world and his existence since the beginning, Due to this curiosity, man has always tried to solve the mystery of life. With the passage of time, the observation and discoveries of man led him to reach to all the modern advances which can be seen today in the world. Today, man has a better knowledge about his existence and the existence of life on Earth. Although a lot has yet to be discovered but we have been able to solve a lot of the mystery of the earth.
Final answer:
The goal of science is to answer these questions by obtaining and analyzing evidence.
Explanation:
Science is a distinctive way of gaining knowledge about the natural world that tries to answer questions with evidence and logic. Scientists develop hypotheses to explain observations and conduct experiments to collect evidence to support or disprove their hypotheses.
People examine and ask questions about the world in various ways beyond science, such as through history, social studies, and personal experiences. We all have a natural curiosity to understand the world around us and to seek explanations for phenomena we encounter.
Scientific investigations start with curiosity and observation of something not understood. Scientists gather evidence through observations and rely on the scientific method to answer questions by conducting experiments and analyzing data.
by regulating the cell cycle muticellular orginisms gain which of these benefits
Choices are:
A. eliminating unnecessary genes
B. healing wounds effectively
C. replacing lost cells, such as shed skin cells
D. preventing communication among cells
Answer:
The answers are letters B and C.
Explanation:
"Multicellular organisms" are those organisms with many cells. Examples of these are kelp and Volvox.
In order for multicellular organisms to grow, they have to undergo a process called "mitosis." This is a type of cell division which allows the number of chromosomes to be maintained (such as the parent nucleus) in the resultant cells (identical cells).
The division aids in the organism's growth and repair, thus wounds are healed effectively. It also allows the replacement of lost cells, such as shed skin cells because the organism can regenerate cells when the need arises.
In contrast to unicellular organisms which uss cell division for reproduction, multicellular organism use cell division for "healing and repair" as well as "regeneration."