unit 4

Question 1

Apoptosis

Answer 1

Programmed cell death, if the cell fails any of the check points in G1, G2, or M.

Question 2

Cell-surface receptor

Question 3

Autocrine signal

Question 4

Endocrine cell

Question 5

Endocrine signal

Question 6

Enzyme linked receptor

Question 7

Extracelluar domain

Question 8

Lingand

Answer 8

Something that binds to a receptor or a protien.

Question 9

Neurotransmitter

Question 10

Receptor

Question 11

Signal transduction

Question 12

Signaling cell

Question 13

signaling pathway

Question 14

Target cell

Question 15

Positive feedback

Question 16

Negative feedback

Question 17

Cyclin-dependent Kinase

Answer 17

Also called CDK. Is Kinase activated by cyclin. This is a positive regulator which allows the cell to pass through different checkpoints during interphase and mitosis. Concentration dependent

Question 18

G0 phase

Answer 18

No active mitosis is taking place. (e.g Neurons, spinal cord which are permanently in G0 phase )

Question 19

G1 Phase

Question 20

G2 Phase

Question 21

S Phase

Question 22

Mitosis

Answer 22

The division of a cells nucleus.

Question 23

Interphase

Question 24

Cytokensis

Answer 24

The physical process of a cell dividing. Last phase of the M phase.

Question 25

Centriole

Question 26

Centromere

Question 27

Histone

Question 28

Chromatid

Question 29

Dipold

Answer 29

n=46

Question 30

Haploid

Answer 30

n=23

Question 31

Homloglous Chromosomes

Answer 31

A set of one maternal and one paternal chromosome that pair up with each other during fertilization.

Question 32

Gamete

Answer 32

Sex cells, sperm and egg. Also called Hapolid cell.

Question 33

Somatic Cell

Answer 33

Any cell that is not a gamete and reproduces using mitosis (asexual) rather than meiosis.

Question 34

Tumor suppressor gene

Answer 34

Good! Fights the tumors!

Question 35

Telomere

Answer 35

A telomere is a region of repetitive DNA sequences at the end of a chromosome

Question 36

Oncogene

Answer 36

In charge of cell division, CDK is an example, oncogenes cause cancer because they are mutated.

Question 37

Binary fission

Answer 37

How bacteria reproduce.