Answer:
Two gametes end up with 30 chromosomes, one gamete will have 31 and one will have 29.
Explanation:
During meiosis, a single diploid cell divides into four haploid cells with half the chromosome number than the parent cell.
During meiosis I, homologous chromosomes separate and the chromosome number in the two daughter cells goes down by half. During meiosis II, the "sister" chromatids separate, and the chromosome number in the respective daughter cells remains the same.
Non-disjunction of a single dyad in meiosis II causes that one of the daughter cells will have an extra chromosome, and another will be lacking one. The two other gametes will be normal.
I drew a simple example of what would happen during meiosis of a 2n=4 cell if there was non-disjunction in a single dyad during meiosis II.
Answer:
Intracellular mediator or the secondary messenger molecules
Explanation:
The hormones act on the target cell or a group of target cells by binding to the hormone receptors present in the membrane of the target cells.
The hormones which are composed of the lipids bins to the intracellular receptors but the amino acid-based hormones are not able to diffuse into the cell and thus binds to the membrane-bound receptors.
This involves the signal transduction by the production of the secondary messenger molecules. The messenger molecules act as intracellular mediators like the cyclic AMP, cyclic GMP and the cyclic CMP.
Thus, the secondary messenger is the correct answer.
Answer: ATP ( adenosine triphosphate) is considered as the energy currency of the cell as it stores energy in the cell. It is an example of chemical potential energy because energy is stored in the high energy containing phosphoanhydride bond (between phosphate molecules in the ATP).
Answer:
So where does the mass come from? The mass of a tree is primarily carbon. The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.
Explanation:
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