Deck 6: Reproduction at the Cellular Level

Question 1

Which of the following types of cell division actually contains two rounds of cell division?

A)mitosis
B)meiosis
C)cytokenesis

Answer 1

B

Question 2

How would you determine if the number of chromosomes in a certain life stage of an organism exhibiting alternation of generations was diploid or haploid?

A)compare the chromosome number before and after mitosis
B)compare the chromosome number before and after meiosis
C)compare the chromosome number before and after cytokenesis

Answer 2

B

Question 3

Researchers found that a certain species of sea slug, Elysia chlorotica, has in its genome a gene for repairing and maintaining chloroplasts.The gene is identical to one found in the algae from which the slugs steal chloroplasts for performing photosynthesis during periods of dietary shortfall.How did the slugs get the gene?

A)through vertical gene transfer
B)through horizontal gene transfer
C)through diagonal gene transfer

Answer 3

B

Question 4

The separation of the cytoplasm of a cell during cell division is known as:

A)mitosis
B)meiosis
C)cytokenesis

Question 5

A certain sea slug, Elysia chlorotica, "steals" chloroplasts from algae it normally feeds upon, and then uses the chloroplasts to conduct photosynthesis during times of low food availability.Scientists found that the slug carries a chloroplast-maintenance gene in its genome, a gene identical to one found in the algae.The process by which the slug first acquired the gene is called what?

A)horizontal gene transfer
B)mutation and natural selection
C)vertical gene transfer

Question 6

Inhibitors of microtubule synthesis inhibit mitosis by preventing the formation and function of the:

A)chromosomes
B)centrioles
C)spindle