[mage lang=”en|es|fr|en” source=”flickr”]where to find telomerase[/mage]
please help! 3 multiple choice questions i need to complete NOW! THANK YOU!?
All of the following statements about chromosomes are true EXCEPT
DNA condenses during mitosis in the life cycle of the cell.
A replicated chromosome consists of two chromatids that are identical.
An acrocentric chromosome has its centromere on the end of the chromosome.
Chromatin consists of DNA with associated proteins.
All of the following statements regarding spematogenesis are true EXCEPT
Testicles are descended below the body because of the lower temperature requirement for spermatogenesis.
The function of the nucleus of the sperm is to deliver a diploid set of genes to the egg cell.
In terms of layering, the outermost wall of the seminiferous tubules of the testes is where spermatids are found.
In the testes, the male germ cell allows for both mitosis and meiosis.
3. Which cell type would most likely not have telomerase.
neurons
germ cells
epidermal cells
chondrocytes
THANK YOU GUYS!
1. “An acrocentric chromosome has its centromere on the end of the chromosome” is false.
It is a TELOcentric chromosome that has its centromere on the end of the chromosome.
2. “The function of the nucleus of the sperm is to deliver a diploid set of genes to the egg cell.” is false. A sperm is haploid (n) not diploid (2n).
3. I’d say any of them except for germ cells. The answer they may be looking for is neurons, since in general neurons do not divide in adults (and with no division, no problem with shortening telomeres).
G-Quadruplex-Mediated Inhibition of ALT in yeast – Google Science Fair 2011