Question

1. match the process with the event.

event
process
a. water moving into a red blood cell
active transport
b. glucose crossing the membrane
diffusion
c. sodium ions moving up the concentration gradient
facilitated diffusion
d. oxygen molecules passing into the cell
osmosis

1. homeostasis is the maintenance of nearly constant conditions in the cells of an organism. which of the following is not an example of a homeostatic mechanism?

a. marine fish have salt glands that excrete salt into the water around them.
b. a plant dies after it produces flowers and fruit with seeds inside.
c. humans sweat when they go outside in the heat.
d. desert rats produce only small amounts of urine.
diagnostic test item
b 4b, b.2h
1 the diagram below is a representation of a cell membrane.
how does the channel protein assist in the maintenance of homeostasis?
a it allows for the passage of materials through the cell membrane.
b it synthesizes carbohydrate molecules.
c it converts energy from one form to another form.
d it synthesizes protein molecules.
explanation
a correct! the function of proteins in the cell membrane is primarily to allow for the passage of materials (water, glucose, etc.) into and out of the cell. in this way, proteins allow the cell to maintain homeostasis.
b the cell structure responsible for the synthesis of carbohydrates is the chloroplast.
c energy conversion on the cell membrane occurs through active transport.
d the cell structure responsible for the synthesis of proteins is a ribosome.

Explanation:

Answer:

4.
(a. water moving into a red blood cell - osmosis)
(b. glucose crossing the membrane - facilitated diffusion)
(c. sodium ions moving up the concentration gradient - active transport)
(d. oxygen molecules passing into the cell - diffusion)

1. B. A plant dies after it produces flowers and fruit with seeds inside.
2. A. It allows for the passage of materials through the cell membrane.