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Q: what is the process of maintaining a constant internal environment a.equilibrium b.homeostasis
A: Homeostasis is a state of balance in the body. The balance is maintained through a series of negative feedback mechanisms.
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User: what is the process of maintaining a constant internal environment a.equilibrium b.homeostasis

Weegy: Homeostasis is a state of balance in the body. The balance is maintained through a series of negative feedback mechanisms.
mythmoh|Points 5309|

User: If placed in a hypertonic solution, a plant cell will A. swell. B. burst. C. shrink in size. D. remain constant in size.

Weegy: If placed in a hypertonic solution, a plant cell will burst. The answer is B.

Reference:


User: A molecule that moves across a cell membrane without using the cell's energy tends to move A. away from the area of equilibrium. B. away from the area where it is less concentrated. C. away from the area where it is more concentrated. D. toward the area where it is more concentrated.

Weegy: C. Please remember to leave positive feedback.
smm04983|Points 95|

User: Active transport performs which function in a cell? A. packages proteins for export from the cell B. distributes enzymes throughout the cytoplasm C. moves substances against a concentration gradient D. equalizes the concentration of water inside and outside the cell

Weegy: C. moves substances against a concentration gradient is the answer.
OxTornado007|Points 5418|

User: The proteins embedded in the phospholipid bilayer do what in the cell membrane? A. organize amino acids for protein synthesis B. help cells recognize each other C. allow larger molecules into the cell D. prevent the passage of certain molecules into the cell

Weegy: Proteins in the phospholipid bilayer are usually involved in transporting substances such as sugars, amino acids and growth materials into the cell, and allowing waste materials out of the cell. [ Each protein is usually quite specific, only letting in or out a specific substance it recognises. ]
cha97mw|Points 1146|

User: Which of the following is an example of osmosis? A. Water leaves the tubules of the kidney due to hypertonic fluid surrounding the tubules. B. Digestive enzymes are excreted into the small intestine. C. White blood cells consume pathogens at the site of an infection. D. Calcium is pumped inside a muscle cell after the muscle cell completes its contraction.

Weegy: Osmosis is the diffusion of fluids through membranes or porous parititions, thus making A an example of osmosis. source:
AwesomeGuy200|Points 1177|

User: Which transport process always involves the movement of materials from inside the cell to outside the cell? A. phagocytosis B. endocytosis C. exocytosis D. diffusion

Weegy: C. exocytosis
jeifunk|Points 6531|

User: Some peeled pieces of apple were placed in purified water and some in heavily concentrated salt water. The cells in the apple pieces will A. lose water in both solutions. B. gain water in both solutions. C. lose water in the purified water and gain water in the salt water. D. gain water in the purified water and lose water in the salt water.

Weegy: Gain water in the purified water and lose water in the salt water.
selymi|Points 8862|

User: Molecules that are too large to be moved through the cell membrane can be transported into the cell by A. osmosis. B. diffusion. C. endocytosis. D. exocytosis.

Weegy: The answer is D. Exocytosis.
bongche|Points 3095|

User: Cells use passive and active transport to move materials across the cell membrane for the maintenance of a constant internal environment. What is this process called? A. diffusion B. evolution C. homeostasis D. respiration

Weegy: The answer is C. Homeostasis
caseyowens2011|Points 0|

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Asked 9/14/2012 7:29:08 AM
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