biology exam 2 part 1

C

Identify which of the following statements is not true. A. ATP is formed when energy is released during cell respiration. B. When ATP becomes ADP + P, the amount of energy released is enough for a biological purpose. C. ATP is comprised of a sugar, base, and two phosphate groups. D. ATP contains the energy form used for cellular work

osmosis

In the set up shown in the figure below, which process allows the water to move across the membrane? (picture is a tube inside a beaker)

facilitated and active transport

In what function do the embedded membrane proteins at "c" serve?

glucose absorption would decrease

Intestinal cells absorb glucose via active transport. What would happen if all the mitochondria within these intestinal cells were destroyed?

facilitated diffusion

Molecules move from greater to lesser concentration through a transport protein in ___________

active site

The part of the enzyme into which the substrate fits is called the __________.

C

Which of the following is best associated with a coupled reaction? A ATP consumes energy from another metabolic reaction B ADP often transfers a phosphate to the reactant C The metabolic reaction requires energy from ATP D ATP gains a phosphate group

D

Which of these words does not belong with the rest as it relates to concentration gradient? A osmosis B diffusion C passive transport D active transport

substrate y would not be metabolized

the figure below represents a metabolic pathway, what happens if enzyme2 is defective and non-functional

energy can be changed from one form to another

when a car burns gasoline, much of the energy is in the form of heat as the car is driven. Which of the following best describes this in relation to the 1st law of thermodynamics?

is the energy required for molecules to react with each other.

Energy of activation _____________.

bacteria can't survive in a hypertonic solution because they lose water.

Pickles are preserved in a 20-30% salt solution called brine. How does this method prevent contamination by microorganisms?

does not require energy from the cell

Simple diffusion across a plasma membrane is called passive transport because it...

active transport

The concentration of calcium in a cell is 3%. The concentration of calcium in the surrounding fluid is 1%. How could the cell obtain more calcium?