the cell

Question 1

This process effects proliferation of cells required for the growth and maintenance of the organism.
Somatic cells divide by mitosis while sex cells divide by meiosis.

Answer 1

CELL DIVISION

Question 2

Refers to movement of molecules along a gradient.
A naturally occurring phenomenon
Does not require the expenditure of energy on the part of the cell.

Answer 2

PASSIVE TRANSPORT

Question 3

Refers to movement of molecules against a gradient.

Requires the expenditure of energy on the part of the cell.

Answer 3

ACTIVE TRANSPORT

Question 4

the difference between the amounts of molecules present at two points, which determines the movement of molecules

Answer 4

CONCENTRATION GRADIENT

Question 5

Its rate depends on the following factors:
Temperature- warmer solutions diffuse faster
Concentration of the solution- the greater concentration at some point in a solution, the greater will be the tendency for diffusion
Size of the molecules- larger molecules diffuse more slowly than smaller ones
Viscosity of the solution- the thicker the solution, the slower is the rate of diffusion

Answer 5

DIFFUSION…

Question 6

the thicker the solution, the slower is the rate of diffusion

Answer 6

Viscosity of the solution-

Question 7

larger molecules diffuse more slowly than smaller ones

Answer 7

Size of the molecules

Question 8

the greater concentration at some point in a solution, the greater will be the tendency for diffusion

Answer 8

Concentration of the solution

Question 9

Temperature-

Answer 9

warmer solutions diffuse faster

Question 10

occurs when unequal concentration of dissolved substances are separated by a semi-permeable membrane.
The solvent moves through the membrane toward the side with the lower concentration.
The solution cannot pass through the membrane and the only way to attain equal concentration on both sides of the membrane is for the solvent to move from the area of lower concentration to the area of higher concentration.

Answer 10

OSMOSIS

Question 11

The higher the pressure of the blood in the capillaries, the higher is the filtration rate.

Answer 11

hydrostatic pressure.

Question 12

occurs when water and dissolved substances move through a membrane because of unequal pressure on the 2 sides of the membrane.

Answer 12

FILTRATION

Question 13

is the ingestion of material by cells

Answer 13

Endocytosis

Question 14

cell drinking

Answer 14

Pinocytosis

Question 15

cell eating

Answer 15

Phagocytosis

Question 16

membranes of a vesicle inside the cell can fuse with the plasma membrane to discharge the contents of the vesicle outside the cell

Answer 16

Exocytosis

Question 17

a substance may be picked up on one side of the cell, transported completely across the cell and discharged on the other side

Answer 17

Transcytosis

Question 18

This process effects proliferation of cells required for the growth and maintenance of the organism.
Somatic cells divide by mitosis while sex cells divide by meiosis.

Answer 18

CELL DIVISION

Question 19

No reduction
Produce diploid daughter cells genetically identical to their parent cell.
Sister chromatids move towards opposite poles

Answer 19

Mitosis

Question 20

ll nonreproductive cells in a species have the same number of chromosomes.

46 in humans

Answer 20

Chromosomes

Question 21

forms between the 2 centrioles.

Answer 21

Spindle

Question 22

Chromosomes condense enough to be seen with a light microscope.

Answer 22

Prophase

Question 23

Alignment of the chromosomes along center of cell

Answer 23

Metaphase

Question 24

Separation of the sister chromatids.

Answer 24

Anaphase

Question 25

splits apart – sister chromatids move toward opposite poles (migration)

Answer 25

Centromere

Question 26

re-formation of the nuclei once the chromosomes are at opposite poles.
Chromosomes unwind
Daughter cells are produced

Answer 26

Telophase

Question 27

division of the cytoplasm.

Answer 27

Cytokinesis