The germination of a starch seed involves the seed absorbing water, the emergence and growth of the radicle and shoot, expansion of cotyledons, and growth into a seedling, all supported by the metabolism of stored starch.
Explanation:The sequence of events in the germination of a starch seed is a crucial biological process. Germation begins when a seed, which has been dormant, encounters favorable conditions such as moisture or the right temperature, which triggers the germination process. Seeds often require specific conditions to end dormancy, such as exposure to light, cold, or fire, or going through chemical treatments. The germination process itself typically involves several key steps.
The seed absorbs water and swells, breaking the seed coat.The embryonic root, or radicle, emerges first and begins to grow downward to anchor the plant and absorb water and nutrients.The shoot, or plumule, grows upward and eventually emerges from the soil.The cotyledons, or seed leaves, may emerge from the soil and expand to begin photosynthesis, if they are present above the ground.The seedling continues to grow, developing true leaves and beginning to look more like the adult plant.The starch stored within the seed is metabolized by the embryo to provide the energy needed for these physical changes until the seedling can produce its own food via photosynthesis.
What is the different between cdc and cdk in cell cycle control??? ...?
Answer:
Cdc stands for cell division cycle and cdk is cyclin dependent kinase.
Explanation:
Cdc and cdks are involves the process of cell cycle. The cdk are the enzymes that attaches phosphate group to different molecules. The phosphorylation process allows the cell to move to next stage in the cell cycle.
The Cdc protein allows the removal of residues that are attached to inhibitory phosphate. This cdc protein control cell cycle progression. This allows the cell to move through cell cycle stages that includes S phase and mitosis.
Amoebas are unicellular organisms, while human beings are multi-cellular and the most intelligent of organisms. However, both are classified as eukaryotes. How will you justify this reasoning?
If a tRNA molecule has an anticodon which reads AUG, what will it match up with and what amino acid is it carrying?
A. It is carrying arginine and will match with a CGU codon on the mRNA.
B. It is carrying methionine and will match with a TAC codon on the DNA.
C. It is carrying methionine and will match with a UAC codon on the mRNA.
D. It is carrying tyrosine and will match with a UAC codon on the mRNA
Is it A? ...?
no, it's not a. it's d) It is carrying tyrosine and will match with a UAC codon on the mRNA
if the tRNA is AUG, then the mRNA would be UAC.
U goes with A
A goes with U
T goes with A
G goes with C
C goes with G
to find out how which amino acid is it you can use the chart below, which should be tyrosine. :)
The priest in “First Confession” tells Jackie he should follow his sister Nora’s good example.
true
false ...?
Answer:
false
Explanation:
Explain why and how theories may be changed or replaced over time.
Answer:
The theories may get modified with time as new information or new technologies get discovered or get developed. New developments result in the modifications in the methods of experiments that offer information, which may or may not encourage the prevailing theory. If the theory is still supported, it may be updated, however, if it is not even if the results are relevant and true, the theory may get substituted.
The respiratory system works with the ______ system to add oxygen to the blood and remove carbon dioxide from the body. what is it ? circulatory,muscular,digestive, or nervous ?
Answer;
-Circulatory system
The respiratory system works with the circulatory system to add oxygen to the blood and remove carbon dioxide from the body.
Explanation;
-The circulatory system is the body's transport system. It is made up of a group of organs that transport blood throughout the body. The heart pumps the blood and the arteries and veins transport it. Oxygen-rich blood leaves the left side of the heart and enters the biggest artery, called the aorta.
-The circulatory and respiratory systems work together to provide body cells with oxygen which is essential for cellular respiration. This process involves the breaking down of glucose so that energy is released in a form that cells can then use. During cellular respiration, carbon dioxide is produced as a waste product. The carbon dioxide then needs to be removed from the cells or it would cause damage or death to them.
Is Exothermic/Endothermic related to Product/Reactant Favored?
What are the structures of the lymphatic system?
bone marrow and thymus
A scientific model can be used to _______. a. replace study of the actual system b. better understand systems and processes c. complicate ideas d. all of the above
how do bone cells adapt to their job ...?
Being nocturnal is an adaptation that plants and animals use to deal with water scarcity and dry climate. Which biome is likely to have the maximum number of nocturnal animals?
A.Grassland
B.Rain Forest
C.Coniferous Forest
D.Desert
Which of the following could be a physical hazard? a. Shigella bacteria b. Plastic packaging c. All-purpose cleaner d. Mold
Select the most appropriate statement with respect to cellular respiration in humans
what happens when a magnesium atom loses an electron in its outer energy shell? A. it has an increase in number of neutrons. B. it becomes a negative ion. C. it has an increase in the number of protons. D. it becomes a positive ion.
When a magnesium atom loses an electron from its outer energy shell, it becomes a positive ion. The correct option is D
What is electron ?An electron is a subatomic particle that carries a negative electric charge. It is one of the fundamental particles that make up atoms, along with protons and neutrons.
This is because magnesium has 12 electrons, with 2 in its innermost shell and 8 in its second shell. The outermost shell contains 2 electrons, so when one electron is removed, the atom now has 11 electrons and a net positive charge of +1.
Therefore, the correct answer is D
Learn more about electron here : brainly.com/question/25674345
#SPJ1
A Punnett square has letters at top and left sides of the grid. What cellular process is represented by these letters?
Final answer:
The letters on a Punnett square represent alleles from each parent's gametes produced through meiosis, and are used to predict offspring genotypes.
Explanation:
The letters at the top and left sides of the Punnett square represent the alleles of the gametes produced by each parent during the cellular process of meiosis. This process ensures the separation of homologous chromosomes into different gametes. In a typical monohybrid cross, the Punnett square has four squares, and if both parents are heterozygous (e.g., Aa), the Punnett square would illustrate the outcomes of AA, Aa, aA, and aa. For each parent, half the gametes will carry the dominant allele (A) and half will carry the recessive allele (a). The squares within the grid represent the potential genotypes of offspring, with the resulting ratios being 25% AA, 50% Aa, and 25% aa for the genotypes, which aligns with Mendel's law of segregation.
The letters in a Punnett square signify the genetic recombination and allele combinations that occur during meiosis, specifically illustrating the potential outcomes of offspring resulting from the fusion of gametes during fertilization.
The letters positioned at the top and left sides of a Punnett square grid represent the cellular process of genetic recombination and the subsequent formation of gametes during meiosis. In meiosis, a specialized type of cell division that occurs in sexually reproducing organisms, the genetic material is shuffled and exchanged between homologous chromosomes.
The top row and left column of a Punnett square typically display the alleles carried by each parent. These letters represent different versions of a gene, known as alleles, and their various combinations illustrate the potential genetic outcomes of the offspring. The crossing over and random assortment of alleles during meiosis contribute to genetic diversity among the gametes, ensuring that each individual produced inherits a unique combination of genetic material from their parents.
As the cells undergo meiosis, genetic recombination leads to the formation of gametes, such as sperm and egg cells, each carrying a distinctive set of alleles. The Punnett square provides a visual representation of the possible combinations of alleles that can result from the union of these gametes during fertilization.
The question probable may be
Which cellular process is depicted by the letters positioned at the top and left sides of a Punnett square grid?
Organisms don't need a mate in reproduction. is it asexual or sexual
When organisms do not need a mate in reproduction, it is asexual
Asexual reproduction is a type of reproduction in which a single organism produces offspring that are genetically identical to the parent. This type of reproduction involves only one parent and there is no change in the number of chromosomes. Asexual reproduction occurs in unicellular organisms such as archaea and bacteria. Types of asexual reproduction include; budding, sporogenesis, binary fission, and vegetative propagation.
The hotter the star, the more light it gives off, the cooler the star the less light it gives off. Stars that follow this pattern are __________.
neutron stars
black holes
giants
main sequence stars
Answer:
Option D, main sequence stars
Explanation:
Main sequence star are those in which hydrogen fuses to form helium atom. The life of a sequence star depends on the mass it possess. A star which has high mass has higher internal material within them which burns fast to produce light and heat. The higher the mass, the higher is the luminosity (more light is produced).
Hence, the correct answer is option D main Sequence Star.
Which of the following describes a population that is distributed evenly across an area A.random B.uniform c.clumped d.crowded
What do all wetlands have in common?
A. They lack life-forms.
B. They are highly polluted.
C. They are swamps.
D. They recycle nutrients into the soil.
The answer is D. they recycle nutrients into the soil
The correct answer is option D. They recycle nutrients into the soil.
The wetlands are the water the land water bodies, which are supplied with the water seasonally or throughout the year. All the type of the wetlands can support growth of the life forms, which can be seasonal or annual. Some o the wetlands are polluted by human activities, but not all of them. Swamps are a type of wetlands.
All the wetlands are involved in the recycling of the nutrients back into the soil. A wetland system have a rich diversity of flora and fauna, which can help in filtration of various sediments from water, recycling or removing nutrients and pollutants. In the wetlands, the water also come from the runoffs, the inorganic substances present in the water can be filtered and added to the sediments.
what base in mRNA can only join with the adenine base of RNA? uracil base of tRNA
How do the number of chromosomes in a female scorpion's egg cells compare with the number in her body (somatic) cells?
Question 12 options:
The number of chromosomes depends on the size of the scorpion.
There are half as many chromosomes in egg cells.
There are twice as many chromosomes in egg cells.
The number of chromosomes is the same in both.
The number of chromosomes in a female scorpion's egg cells is half as many chromosomes as compared with the number of chromosomes in her body (somatic cells). Thus, the correct option is B.
What are Chromosomes?Chromosomes are the units of DNA which contain the hereditary information of an organism. Chromosomes contain genes which are responsible for the development of different characters in an organism.
An organism is formed by fertilization of gametes in the sexual reproduction. The zygote formed is diploid in nature, so to maintain the chromosomal count constant in the zygote, the gametes need to be haploid in nature.
Two haploid gametes fuse to form a diploid zygote cell which leads to the formation of a diploid organism. In this organism, all the somatic cells are diploid in nature which undergo mitosis to divide the cells.
Therefore, the correct option is B.
Learn more about Chromosomes here:
https://brainly.com/question/1596925
#SPJ2
What observation led researchers to purpose that chloroplasts evolved from Cyanobacteria
The energy needed for body's internal activities when at rest is your Active Metabolic Rate.
True
False
Proteins are made from amino acids. An amino acid has three parts that are joined to a central carbon atom. Identify the three parts that create an amino acid.
For a chemotherapeutic drug to be useful for treating cancer cells, which of the following is most desirable?
A) It is safe enough to limit all apoptosis
B) It does not alter metabolically active cells
C) It only attacks cells that are density dependent
D) It interferes with cells entering G0
E) It interferes with rapidly dividing cells ...?
A chemotherapeutic drug is most useful when it interferes with rapidly dividing cells, as this is a characteristic of cancer cells. Chemotherapy can cause side effects due to this mechanism affecting healthy cells too, hence combination therapies are used.
Explanation:For a chemotherapeutic drug to be useful for treating cancer cells, it is most desirable that it interferes with rapidly dividing cells (Option E). This is because cancer cells are characterized by their uncontrolled division. Chemotherapy drugs target these rapidly dividing cells to prevent their growth and spread. By interfering with key processes such as DNA duplication or mitotic spindle formation, these drugs can lead to the death of cancer cells. However, it is important to note that because these drugs also affect other rapidly dividing healthy cells in the body, they can cause side effects like hair loss and damage to the intestinal lining. Combination chemotherapy is often used to enhance therapeutic efficacy while trying to limit toxicity to healthy tissues.
Which of the following must occur for speciation to happen?
geographic isolation
reproductive isolation
temporal isolation
behavioral isolation
Reproductive isolation is necessary for speciation. It is a process by which new species of plants and animals are created.
Further Explanation:
Speciation is a technique used to create new kinds of plants and animals. It occurs when a group of species differ from other species and develop their new characteristics. They differ from their ancestors based on the environment they live in and characteristics.
The speciation is performed in five forms: allopathic, peripatric, sympatric and artificial. Allopatric speciation occurs when two different groups of species are formed from the single species. These two species are isolated from each other. Peripatric speciation occurs when an individual species break off from a large group and form a new species. Sympatric speciation occurs when a species cover a large geographical area. Artificial speciation is the creation of new species by a human.
Learn More-
Learn more about a haploid cell during meiosis https://brainly.com/question/94813 Learn more about how are mitosis and binary fission similar https://brainly.com/question/6462270 Learn more about a dividing eukaryotic cell that is treated with a drug that inhibits the shortening of spindle microtubules. This will cause the cell division cycle to stop at the ____ stage. https://brainly.com/question/10767798
Answer Details:
Grade: High school
Subject: Biology
Chapter: Evolution.
Keywords:
Reproduction, isolation, speciation, species, ancestors, characteristics, allopathic, peripatric, sympatric, articial, geographical, plants and animal.
For speciation to happen, reproductive isolation must occur.
What is speciation?Reproductive isolation is a mechanism that prevents individuals from different populations or species from interbreeding successfully or producing viable offspring. It can occur through different processes, including geographic isolation, temporal isolation, behavioral isolation, or a combination of these factors.
Geographic isolation occurs when populations are physically separated by a geographic barrier, such as a mountain range or a body of water. Over time, genetic differences can accumulate in each population, leading to reproductive isolation.
Temporal isolation occurs when populations reproduce at different times of the day, season, or year, which can prevent successful mating and reproduction.
Behavioral isolation occurs when differences in behavior or courtship rituals between populations prevent interbreeding.
Learn more about speciation, here:
https://brainly.com/question/9589072
#SPJ5
The main source of energy for reactions that occur in all living organisms is _____.
A. adenine
B. ADP
C. ATP
D. phosphate
ATP is the answer....
Energy from the sun showers the Earth every day. Which are better at utilizing it: heterotrophs or autotrophs? Explain your answer.
a dihybrid cross between 2 heterozygous parents produces a phenotypic ratio of?
A dihybrid cross between two heterozygous parents produces a phenotypic ratio of 9:3:3:1, which reflects the independent assortment of genes and dominance of certain traits.
Explanation:A dihybrid cross between two heterozygous parents (e.g., GgYy x GgYy) involves two genes and produces offspring with a combination of traits that follow a phenotypic ratio of 9:3:3:1. This means that in the context of pea plants with two traits such as seed shape and color, 9/16 of the plants would exhibit both dominant traits (round, yellow seeds), 3/16 would exhibit one dominant and one recessive trait (round, green seeds or wrinkled, yellow seeds), and 1/16 would exhibit both recessive traits (wrinkled, green seeds). These proportions can be visualized using a Punnett square and result from the principles of independent assortment and dominance in genetics.
An example of natural selection is the tail of a male peacock. The females of the species choose mates based on the colors of the males’ tail feathers. If females begin using different criteria than feather color when they choose mates, what would most likely happen to the tails of peacocks over time?
for e2020, The answer is A:
increased variation in tail feather color because the selection pressure has been relieved
Good luck!
-RxL