test

Question 1

Why do cells have to divide?

Answer 1

DNA overload, inefficiency of cell membrane

Question 2

DNA overload

Answer 2

When a cell becomes too large to divide

Question 3

Ratios

Answer 3

surface area:volume- when its larger that is good, means cell is small

Question 4

Adaptations cells have made to regulate surface area

Answer 4

Divide, slow down its metabolism or change in shape (becomes long and flat)

Question 5

Two main stages of cell cycle

Answer 5

Interphase and mitosis

Question 6

Surface area and volume

Answer 6

Cell membrane and cytoplasm

Question 7

Cell cycle

Answer 7

Series of events that take place as cell grows and divides

Question 8

G1

Answer 8

Increases in size

Question 9

S

Answer 9

Copies DNA

Question 10

G2

Answer 10

Prepares to divide

Question 11

M phase

Answer 11

divides

Question 12

G0

Answer 12

G0 phase is for cells that do not divide, such as cardiovascular cells, sperm cells, and nerve cells

Question 13

Prophase

Answer 13

Longest, preparation, chromatin becomes chromosomes

Question 14

metaphase

Answer 14

Middle, chromosomes line up in middle

Question 15

anaphase

Answer 15

Away, chromatids are pulled apart

Question 16

telophase

Answer 16

two, chromosomes gather at both sides and 2 nuclear enveloped form

Question 17

Chromosomes happen

Answer 17

During mitosis

Question 18

How 6 feet fit

Answer 18

DNA wraps around 8 histones, then they bunch up into nucleosomes, and the DNA wraps around those. These are called loosely coiled chromatin, and when tightly wrapped it is supercoiled.

Question 19

How many chromosomes are in humans

Answer 19

46 (half for sex cells)

Question 20

Apoptosis

Answer 20

Programmed cell death

Question 21

Proteins that regulate cell cycle

Answer 21

Cyclins