Answer:
C
Explanation:
Trilobites were alive the longest time ago, so they would be found in the oldest rock layer.
Which of the following initiates protein synthesis in a cell by carrying specific instructions from the nucleus to the ribosomes?
A. tRNA
B. mRNA
C. rRNA
D. All of the above
please explain your answers for better comprehension
I WILL MARK BRAINLIEST!
mRNA initiates protein synthesis by carrying specific instructions from the nucleus to the ribosomes. DNA is transcribed into mRNA, which carries the instructions to the ribosomes for protein synthesis. Option B
Explanation:The structure that initiates protein synthesis in a cell by carrying specific instructions from the nucleus to the ribosomes is mRNA, or messenger RNA. In the process of protein synthesis, DNA is transcribed into mRNA in the nucleus.
This mRNA molecule then exits the nucleus and travels to the ribosomes. Here, the instructions carried by the mRNA are translated into a specific protein. Although tRNA and rRNA play important roles in protein synthesis, it is only mRNA that carries the specific instructions from the nucleus.
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Which bug has the greatest fitness for this environment
A.bug A
B.bug B
C.bug C
D.bug D
Answer:
C. Bug C
Explanation:
It is able to camouflage itself with the environment and will be able to live longer because it won't be spotted by predators
Bug C has the greatest fitness for this environment, it is an example of industrial melanism. Therefore, option C is correct.
What is the phenomenon of industrial melanism?As a result of dark pigmentation evolving in an environment contaminated by industrial pollutants, such as sulphur dioxide gas and dark soot deposits, numerous arthropods have developed industrial melanism.
Industrial melanism is caused by external factors that alter the color of diverse species. As the industrial revolution progressed, many regions in North America and Europe began to turn black from the carbon that had begun to cover them.
Bug C has the greatest fitness for this environment because its color is the same as the color of its surrounding. Therefore, option C is correct.
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two unknown Pea plants are crossed. 75% for 3/4 of the plants have axial flowers and 25% or 1/4 have terminal flowers. what are the genotypes of the parents ?
Answer:
Aa x Aa
Explanation:
Using axial is dominant (A) and terminal is recessive (a). For a recessive trait to show up at all, both parents must have at least one recessive character.
You can solve this using a punnett square
Aa x Aa -> (1) AA (2) Aa (1) aa
This gives a 3:1 ratio or 75%/25% ratio of axial to terminal flowers
1. What does the water cycle describe?
Answer:
The water cycle describes the continuous movement of water as it makes its way from the ocean, to the atmosphere and back down to earth again.
Explanation:
Answer question 6-9 please
20 points
Why not try and do some yourself?
Hello!
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Your answers here would be;
6: Rain Forests.
7: They moderate area temperatures.
8: The amount of solar energy the Latitude receives
9: Hybrid Cars.
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Hope i helped.
Slime molds are very interesting organisms. When conditions are good, they live as single celled organisms, however, if conditions such as temperature are not right, the
individual cells will combine together to form a single creeping "blob" with many nuclei. Some species have earned the names dog vomit slime and wolf's mil slime. Through research, biologists have determined that these single celled organisms live on mulch or wet decayed wood, have membrane bound organelles, do not have chitin in their cell walls and do not contain chlorophyll. In which kingdom do these organisms most likely belong?
A. Animalia
B. Plantae
C. Fungi
D. Protista
The correct answer is C. Fungi because Slime molds, despite some differences, are most closely related to fungi, sharing habitat, structure, and lifestyle characteristics, placing them in the kingdom Fungi.
However, based on the provided information, we can deduce their kingdom by considering the following points:
1. They are single-celled organisms that can aggregate to form a multinucleate structure, which is characteristic of some fungi and protists.
2. They live on mulch or wet decayed wood, which is a typical habitat for many fungi, as they are decomposers.
3. They have membrane-bound organelles, which is a feature of eukaryotic organisms, including fungi and protists.
4. They do not have chitin in their cell walls. While chitin is a common component of fungal cell walls, its absence does not necessarily exclude them from the kingdom Fungi, as there are fungi without chitinous cell walls.
5. They do not contain chlorophyll, which means they are not photosynthetic like plants.
Given these characteristics, slime molds are most closely related to the kingdom Fungi, despite some differences from typical fungi. They were once classified as fungi, but more recent classifications often place them in the kingdom Protista or in a group called the supergroup Amoebozoa, which is distinct from both Fungi and Protista. However, based on the options provided in the question, the most suitable kingdom, considering their lifestyle and ecological role, would be Fungi.
Therefore, the most likely kingdom for slime molds, based on the information given and the provided options, is Fungi (C).
A retreating glacier forms an are of rocky material. When primary
succession occurs, which organisms will help create the soil by breaking
down bare rock?*
A Insects
B Lichens
C Grasses
D Deciduous trees
Answer:
Explanation:
As ecosystem moves through the stage of succession the population of organisms in them change which of the following describes the stage of succession likely to have the most biodiversity
Which structures are found in both animal and plant cells? Check all that apply. cell membrane, cell wall, cytoplasm, Golgi body, nucleus, ribosome, vacuole
Answer:
✔cell membrane
✖cell wall
✔cytoplasm
✔Golgi body
✔nucleus
✔ribosome
✔vacuole
(the tick sign ✔means this is the one you have to pick and the incorrect sign✖means don't pick it. btw I know this is late but I am doing it for the people who come after looking for this answer.)
hope this helps here is a hug ༼ つ ◕_◕ ༽つ
If you were explaining equilibrium to a classmate, which of the following statements might you make? (1.0 points)
A)When there is an equilibrium change, signals to maintain balance are sent from the medulla oblongata to the vestibulocochlear nerves.
B)When there is an equilibrium change, signals to maintain balance are sent to the cerebellum and thalamus.
C)Commands to maintain equilibrium are sent to the cerebral cortex, whereas information about equilibrium is sent directly out to the body.
D)Commands to maintain equilibrium are sent directly out to the body, whereas information about equilibrium is sent to the cerebral cortex for conscious perception.
Answer:
D
Explanation:
Your brain sends out the commands to the effectors in the body, but the sensors around the body send information to be processed in the brain about equilibrium.
A. heterozygous
B. alleles
C. homozygous dominant
D. homozygous recessive
I’m pretty sure the answer is homozygous recessive!
Chloroplasts are oval disks containing green chlorophyll and usually arranged near the outside of a plant cell. What cellular function do they support?
a.Photosynthesis
b.Locomotion
c.Reproduction
d.Fat storage
Chloroplasts are oval disks containing green chlorophyll and are usually arranged near the outside of a plant cell. The cellular function do they support is a.Photosynthesis.
What is the chemical equation of photosynthesis?In the process of photosynthesis, the chemical reaction involves water and carbon dioxide whereby the light is present.
6H2O + 6Co2⇄ 6O2 + C6H12O6.
Thus, option "A" is correct.
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Part
These beetles have a uniform distribution. In year 1, how many beetles are there per hectare? How many beetles per
hectare were there in the year the beetles reached carrying capacity? Round up or down to the nearest whole number, if
necessary.
Answer -
In year 1, the population was 11,500 spread over 115 hectares
In year 1, there were 100 beetles per hectare (11,500 beetles / 115 hectares).
In year 1, the beetle population exhibited a uniform distribution, meaning it was evenly spread across the area. The total population of 11,500 beetles was distributed over 115 hectares. To calculate the density, the total number of beetles was divided by the total hectare area, resulting in an average of 100 beetles per hectare. This indicates that, on average, there were 100 beetles within each hectare of the habitat in the first year.
As the population reached its carrying capacity, the density per hectare became more stable, providing insights into the ecological dynamics of the beetle population and its relationship with the surrounding environment. It's essential to consider ecological factors that may impact population distribution and density, contributing to a comprehensive understanding of the ecosystem.
Is the gene that cause hemophilia recessive or dominant? Use the image to explain your reasoning
Answer:
Sample answer:
It’s recessive. The mother who is a carrier is heterozygous, but she does not have the disease. The only offspring who have the disease are the boys who inherited one mutated gene.
Hemophilia is a recessive genetic disorder. It is only observed when present in homozygous condition (XhXh).
What is Hemophilia?Hemophilia is usually an inherited bleeding disorder in which the blood does not clot properly in an individual. This condition can lead to spontaneous bleeding in the individual as well as continuous bleeding following injuries or surgery. Blood contains many proteins which are called clotting factors that can help to stop bleeding.
Hemophilia is a recessive disorder. In this condition, the mother who is a carrier is heterozygous (XhX), but she does not have the disease. The only offspring who have the disease are the males who have inherited has one mutated gene.
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Match each type of lipid to its characteristics. Drag the items on the left to the correct location on the right. (photo attached)
phospholipid -> two fatty acids, a glycerol molecule, and a phosphate group
triglyceride -> three fatty acids and one glycerol molecule
steroid -> four fused rings
triglyceride -> forms saturated or unsaturated fats
phospholipid -> provides fluidity to the cell membrane
steroid -> present only in animal cells
I got you <33 and I see it perfectly ! :)
Both triglycerides and phospholipids contain a gylcerol backbone. Steriods contain fused rings and are only found in animals.
Phospholipids and triglycerides share a common structural feature in common and that is the presence of a glycerol backbone in the molecule. Glycerol is a three carbon compound. In a phospholipid, there are two fatty acids and a phosphate group attached to the carbon atoms. In a triglyceride, there are three fatty acids that attach to each of the carbon atoms.
Steriods are composed of fused rings and are found in animals. They play very important roles in the body. An example of a steroid is cholesterol.
Matching the items on the left and right of the image;
phospholipid - two fatty acids, a glycerol molecule, and a phosphate group/provides fluidity to the cell membrane
triglyceride - three fatty acids and one glycerol molecule/forms saturated or unsaturated fats
steroid- four fused rings/ present only in animal cells
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In Mermaids green fins are dominant over purple fins. in fact purple fins are very rare in the mermaid world. Muriel the mermaid has purple fins, and her family has been true-bred for purple fins for generations. Muriel falls in love with jack the merman. He has green fins. Muriel's family does not want Muriel to marry him because it will break the family tradition of purple fins. However after much thought, they decide that they will allow Muriel to marry jack if a geneticist can prove that there is a chance of Muriel and Jack having a baby mermaid with purple fins.
A) What is Muriel's genotype?
B) What type of information do you need from jack to determine his genotype?
C) What does Jack genotype need to be in order for there to be any purple finned babies (prove with punnet square)
Answer:
If the gene for green fins is "G" and the gene for purple fins is "g" :
A) Muriel's genotype is gg
B) His parent's fin colors
C) Gg
Explanation:
What are diseases such as a strep throat and Athlete’s foot caused by?
miasma
decaying matter
microorganisms
temperature changes
Answer:
c. Microorganisms
Explanation:
Microorganism are the microscopic organisms present in environment such as bacteria, fungi and virus.
Strep throat is a infection of throat caused by a "Group A Streptococcus bacterium". The diseases of strep throat causes large red patches on the skin. some of the symptoms of strep throat include fevers, chills and blisters.
Athlete's foot is a feet infection caused by different fungi such as trichophyton, microsporum and epidermophyton. Symptoms of Athlete's foot include scaling, itching, redness and cracking.
Hence, the correct option is c.
Fill in the blanks to complete the passage.
The Austrian monk and scientist Gregor studied the traits of pea plants. He could see that pea plant traits were passed from parents to offspring in a process called .
Answer:first box is mendel and the second box is heredity
Explanation:
I just did
The Austrian monk and scientist Gregor studied the traits of pea plants. He could see that pea plant traits were passed from parents to offspring in a process called heredity.
What is heredity?Heredity is a condition in which traits are passed from one generation to the next generation. In sexual reproduction, the traits are passed from one generation to another generation by the transfer of gametes.
Scientist Mendel Gregor discovered heredity in an experiment on the peas plant. They also discovered dominant and recessive genes. The alleles or characters shown in the character of the organism are the dominant genes, and the alleles that are not visible are the recessive gene.
Therefore, heredity is the process by which the traits of pea plants are passed from parents to offspring.
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Which space station was the first to involve several countries working together?
Answer:
the Soviet space station Mir
What is carrying capacity? the maximum number of species that can live together in an area the maximum population that can be supported in an area the maximum population that can reproduce in an area the maximum number of predators that live in an area
Answer:
Its b. The maximum population that can be supported in an area
Explanation:
just took the assignment on ed
Carrying capacity is the maximum number of population that can be supported in an area. Thus, the correct option for this question is B.
What is Population?The population may be defined as the group of individuals belonging to the same species living in the same area at a definite time. The size, density, abundance, dispersion, birth rate, death rate, etc. are some of the characteristics of the population. These characteristics are known as demographic factors.
Carrying capacity may be characterized as the maximum number of individuals that are generally supported by a habitat. The carrying capacity of any habitat frequently depends on two factors. These factors are as follows:
The space to live.The food to eat.Therefore, carrying capacity is the maximum number of population that can be supported in an area. Thus, the correct option for this question is B.
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How does an electric transformer use electromagnetic induction?
Answer:
An electric transformer is a device that uses electromagnetic induction to change the voltage of electric current. Electromagnetic induction is the process of generating current with a magnetic field. It occurs when a magnetic field and electric conductor, such as a coil of wire, move relative to one another.
Explanation:
Mark as brainliest please ^_^
An electric transformer works through electromagnetic induction, where a changing magnetic field in the primary coil induces a voltage in the secondary coil. The coil ratio determines if the transformer steps up or steps down the voltage.
Explanation:An electric transformer operates based on the principle of electromagnetic induction. This physical process happens when a fluctuating magnetic field causes an electromotive force to be generated in a nearby circuit. In a transformer, an alternating voltage (the primary voltage) is applied to the transformer's primary coil.
This creates an alternating magnetic field within the core of the transformer. The secondary coil, which is wound around the same core, is then subject to this changing magnetic field. The electromagnetic induction that happens as a result of this induces a secondary voltage in the secondary coil. The ratio of the number of turns in the primary coil to the number of turns in the secondary coil is what determines whether the transformer increases (steps up) the voltage or decreases (steps down) the voltage.
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The fox and cooper’s hawk would be ___________________ consumers and considered ______________ predators in this food web.
Answer:
The correct answers are "tertiary; top".
Explanation:
Tertiary consumers are animals that eat other animals that are carnivorous as well. This is the case of the fox and the cooper's hawk. Foxes are omnivore animals that eat other animals like mice, which eat insects that eat plants sequentially. Cooper's hawks are also tertiary consumers, since they eat animals that are secondary consumers like frogs. This characteristic of both the fox and copper's hawk make them top predators in food webs.
Final answer:
The fox and cooper's hawk are higher-level consumers and efficient predators within a food web, maintaining ecological balance by controlling prey populations. They and their prey have adaptations for survival through natural selection. If removed from the food web, it could lead to shifts in the roles of other species.
Explanation:
The fox and cooper's hawk would be higher-level consumers and considered efficient predators in a food web. As higher-level consumers, they prey on various organisms below them in the food chain, including primary consumers like caterpillars and other smaller animals. Their role as predators is crucial for maintaining the balance in an ecosystem as they help control the population of these primary consumers.
Predation involves adaptations that both predators and prey develop through natural selection, such as camouflage. This is seen in both terrestrial and aquatic ecosystems, as demonstrated by the varied predatory relationships within food webs. The adaptations ensure the survival of these species within their respective habitats, allowing them to effectively hunt or evade predators.
In the case of food webs, secondary and tertiary consumers play a role in keeping the system balanced. If one species were to be removed, others in the web could potentially shift roles, although this is an oversimplification as entire ecosystems can be affected by the loss of a single predator or prey species.
I'm planning to do a Bio IA.
If possible it needs to be something related to yeast.
No measuring respiration or fermentation. Already Done.
Make sure that it is appropriate for a Senior IA.
No elementary cool magic trick experiments.
If you don't know what an IA is don't answer. (IB Students)
Answer:
Explanation:
Look into Antimicrobial Peptides and the usage of yeasts to fight the bacterial resistance to antibiotics. Due to the rising bacterial resistance, scientists are using Antimicrobial Peptides (AMPs) as an alternate way to fight this crisis.
Where does yeast come into play? Yeasts are becoming a go-to organism for genetic engineering and recombinant protein production and a source to idenitfy how these AMPs work so that we could possibly target those pathways.
Read the "Antimicrobial Peptides: Recent Insights on Biotechnological Interventions and Future Perspectives" journal article to see if this is something you would like
PLZ HELP 13+points
A zebra’s diet consists of grasses, shrubs, and leaves. A zebra doesn’t eat other animals to survive. What kind of an animal is a zebra? *
A)decomposer
B)omnivore
C)herbivore
Answer:
Herbivore
Explanation:
If an animal eats only plants then it is a herbivore. In our case zebra's only eat plants so it is a herbivore.
Answer:
C.)Herbivore
Explanation:
Moin took some soil and measured the concentration of nitrogenous compounds in it. He distributed the soil equally in two pots- P and Q which he placed in sunlight.
He planted 10 sunflower seeds in Pot P and allowed them to grow. He did not grow anything in the Pot Q.
After one month, he tested the concentration of nitrogenous compounds in both the pots.
What do you think was his observation?
Answer: The nitrogenous compounds in the Pot P will be depleted and the Nitrogenous compound in the Pot Q will have same amount of it.
Explanation:
Moin took soil and put into two pots. In one of the pot which he labelled P,planted sunflower seeds.
Whereas, the pot Q he left as it is with no plantation in it. The observation after few days will be that the level of nitrogen in the pot P will be less compared to the pot Q.
Nitrogen is one of the important micro nutrient which serves many important functions in the plant body. It is the main component of chlorophyll and is important in enzyme synthesis.
Hence, pot P will have its nitrogen consumed by the plant and pot Q will have nitrogen in its soil.
In this figure, which amino acid is specified by the mRNA code CCC?*
1. Ala
2. Pro
3. Gly
4. Lys
Answer:2
Explanation:
A P E X
What is produced in a lymph node?
A. Red blood cells
B. Antigens
C. White blood cells
D. Lysozymes
Answer:
c
Explanation:
white blood cells.
God bless
Which causes a drop in female hormone levels?
the onset of the menstrual flow
if an egg is released from the ovary
if the uterine wall thickens
if the egg is not fertilized
Answer
If the uterine wall thickens
Explanation:
A,B,D, these are all things that happen on a daily to women and most of them still have good horomone levels
When the egg is not fertilized that causes a drop in female hormone levels. So, the correct option is D.
What are Female hormones?Sexuality and fertility are influenced by the three primary reproductive hormones are estrogen, testosterone, and progesterone. Pregnancy, puberty, menstruation, menopause, sex drive, sperm production, and other processes are all controlled by them. These hormones are made in the testes in males and ovaries in females.
The ovaries release the main female sex hormones. The ovary releases female gametes or eggs during ovulation. Following the discharge of the eggs, the ovary forms a corpus luteum, which secretes progesterone and oestrogen to prepare the uterine lining for a prospective pregnancy. The level of female hormones decreases when the egg is not fertilized.
Therefore, the correct option is D.
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Which substances are contained in saliva and tears to break down pathogens?
a
enzymes
b
oils
c
acids
d
sweat
Answer:
its A i got it right on quiz
Explanation:
Enzymes are contained in saliva and tears to break down pathogens. So, the correct option is A.
What is Lysozyme?Lysozyme is defined as an enzyme that is found in secretions that are tears and saliva of animals that are also present in our nasal mucus. Lysozyme serves as the first line of defense because it is able to break down chemical bonds in the outer cell wall of bacteria that attempt to enter our bodies.
Lysozyme is a type of protein found in animals, plants, bacteria and viruses that can be found. Neutrophils, macrophages and granules in serum, saliva, milk, honey and hen's egg white. Lysozyme belongs to the class of glycoside hydrolases which is an alkaline enzyme that hydrolyzes mucopolysaccharides in pathogenic bacteria.
Thus, Enzymes are contained in saliva and tears to break down pathogens. So, the correct option is A.
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How might bird species A and B come into contact with DDT, a pesticide used by farmers?
Answer:
By birds that ate or were in contact with plants that were sprayed with DDT .
Explanation:
Dichlorodiphenyltrichloroethane (DDT) is a versatile pesticide used in agriculture to combat insect plagues. DDT has been prohibited in many contries because this insecticide might cause health problems in humans, especially during fetal development.
Which best compares habitat and niche? Niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat. Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat. Habitat is a group of organisms that live in an area, and niche is a specific species that lives in that area. Niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.
Answer:
Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat
Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat, hence option B is correct.
What is the habitat?An ecosystem's habitat and niche are critical components. They aid in explaining how an organism interacts with its surroundings, including biotic and abiotic elements.
Ecological interactions are the subject of research. There is a slight difference between the words “habitat” and “niche.”
Only after an ecology develops and niches are incorporated into it does a habitat become active (realized habitat). This process, known as habitat differentiation, is intricately linked to the existence of a healthy ecosystem.
Therefore, they inhabit different habitats, it is feasible for two animals to share the same niche (same function) within an ecosystem.
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