S. 3 Quiz 2

plasma

The_______ membrane's job is to selectively permit or restrict substances from entering or leaving the cell.

facilitated diffusion

Of the five transport mechanisms, which will the cell utilize if the substance being transported is insoluble?

bilayer

The plasma membrane has a _______ of phospholipids with proteins dispersed throughout.

False

The cell mechanism of "active transport" involves the transport of insoluble chemicals across the membrane with protein acting as the carrier. True or False?

Krebs cycle

The complete process which is needed to produce ATP is called the

meiosis

The process involving the division of the nucleus in a reproductive cell.

mitosis

The process involving the division of the nucleus of a body cell.

mitochondria

Which of the following organelles acts as the cell's powerplant?

lower

Active transport requires energy because it moves molecules from a _____ to a higher concentration against diffusion.

insoluble

Facilitated diffusion is necessary when the molecules are ______.

proteins

Glucose will pass through a cell membrane with the aid of

vacuole

Lysosomes are able to help digest the food material in the vacuole because they contain enzymes that they spill into the _______.

mitochondria

The Krebs cycle takes place within the :

diffusion

The natural tendency of molecules to move from higher to lower concentrations is:

plasma

The outer layer of a cell which acts as a gatekeeper to the cell is called the ______ membrane

osmosis

The passage of water through a semipermeable membrane is called

ATP

The purpose of the Krebs cycle is torelease energy for making

low

The relative concentration of water in a hypertonic solution is:

high

The relative concentration of water in a hypotonic solution is:

equal

The relative concentration of water in an isotonic solution is:

True

The role of protein in facilitated diffusion is to move insoluble molecules across the plasma membrane; diffusion supplies the power. True or False?

solar

The ultimate source of energy for starting the food chain is: