biology

Question 1

what are the primary structures of a cell membrane?

Answer 1

phospholipids

Question 2

Prokaryotic and eukaryotic are different because

Answer 2

they lack a nucleus

Question 3

The hydrogen, oxygen, and carbon atoms in a glucose molecule are held together by ——- bonds

Answer 3

covalent

Question 4

which macromolecule is responsible for the formation of a cell’s membrane?

Answer 4

lipids

Question 5

which macromolecule us involved in nearly every function in the human body?

Answer 5

protein

Question 6

which of the following elements are principles of the theory?

Answer 6

cells are basic units of life

Question 7

which organelle is called the “powerhouse of the cell”?

Answer 7

mitochondria

Question 8

which cell organelle controls what enters and leaves the cell?

Answer 8

cell membrane

Question 9

Small molecules like O2 and CO2 travel across the membrane along their concentration gradients.

Answer 9

diffusion

Question 10

The chemical equation for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2. true or false?

Answer 10

true

Question 11

Predict how oxygen crosses the plasma membrane if the concentration of oxygen is lower inside the cell than it is outside the cell.

Answer 11

oxygen enters the cell through the plasma membrane.

Question 12

diffusion of water across the cell membrane

Answer 12

osmosis

Question 13

How do carrier proteins facilitate active transport?

Answer 13

carrier proteins move substance from low to high

Question 14

Cells use energy to move materials against their concentration gradients by using protein pumps.

Answer 14

active transport

Question 15

Light-dependent reactions take place in saclike membranes called

Answer 15

thylakoids

Question 16

Which organelle produces protein for a cell?

Answer 16

ribosome

Question 17

In eukaryotic cells, aerobic respiration occurs in organelles called

Answer 17

mitochondria

Question 18

Two atoms of iodine that differ in their number of neutrons are called

Answer 18

isotopes

Question 19

The cell is at equilibrium with the solution, and there is no net movement of water.

Answer 19

isotonic solution

Question 20

The most important biological molecule that provides organisms with chemical energy.

Answer 20

ATP

Question 21

Cells are small (high surface to volume ratio) because it makes them more efficient at moving materials around. True or false?

Answer 21

true

Question 22

The cell has a lower concentration of solute than the surrounding fluid, and the net movement of water is out of the cell.

Answer 22

hypertonic solution

Question 23

Which describes the process of glycolysis?

Answer 23

anaerobic process that breaks down glucose

Question 24

Which macromolecule stores genetic information for an organism?

Answer 24

nucleic acid