Molecular Biology

Question 1

Purposes of cell division

Answer 1

Growth: to add more cells
Reproduction: single-celled organisms use asexual reproduction
Replacement: to replace old/dying cells

Question 2

DNA is packaged into ___________

Answer 2

chromosomes

Question 3

Threadlike structures within the nucleus made up of DNA and _________

Answer 3

proteins

Question 4

Each species has a specific number of chromosomes
Fruit flies:
Carrots:
Humans:

Answer 4

8
18
46

Question 5

In prokaryotic cells, DNA is packaged into a single, _____ chromosome without proteins.

Answer 5

circular

Question 6

In eukaryotic cells, DNA is packaged into multiple chromosomes, wrapped around histone ______

Answer 6

In eukaryotic cells, DNA is packaged into multiple chromosomes, wrapped around histone proteins

Question 7

Centromere

Answer 7

Centromere: region of the chromosome where the two sister chromatids attach

Question 8

Chromatids

Answer 8

Chromatids: two identical parts of a duplicated chromosome

Question 9

Prokaryotes divide through a process called binary fission. This is how bacteria reproduce ________ (without a partner)

Answer 9

asexually

Question 10

___________ cells have a more complex cell cycle than prokaryotic cells.

Answer 10

Eukaryotic