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S_A_V [24]
3 years ago
8

The lock-and-key mechanism refers to what

Biology
1 answer:
Delvig [45]3 years ago
3 0

Answer: The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).

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How do photosynthesis and cellular respirations form a continuous cycle?
Alborosie

Answer:

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

8 0
2 years ago
Frog lungs are poorly developed. How does this relate to their skin being thin and moist?
Doss [256]
<span>Frog lungs are poorly developed because they don't use them that much. Their skin is moist and very thin because it takes part in their respiration because their lungs are underdeveloped. Skin has pores and breathes as well but in humans it's not very much used because we have good lungs, but frogs' skins are very important for them because they couldn't get oxygen without it.</span>
3 0
3 years ago
Non example of animal cell and plant cell
aleksley [76]
This would be bacteria ; aka a prokaryotic cell
4 0
3 years ago
PLEASE HELP
kaheart [24]

Explanation:

C. They make it more fluid

Lipids are composed of fatty acids which form the hydrophilic head and glycerol which forms the hydrophilic tail; their arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties. Via diffusion, small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds.

The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water to diffuse across the membrane along the concentration gradient.

Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers. Cholesterol, which is comparatively rigid, anchors other molecules attached to the membrane, maintain membrane stability or structural integrity  and aid in separating some lipids, helping with membrane fluidity at low environmental temperatures.

Membrane components brainly.com/question/1971706

Learn more about plasma membrane transport brainly.com/question/11410881

#LearnWithBrainly

3 0
4 years ago
A primary active transport process is one in which
aalyn [17]

Answer:

the plasma membrane folds in ward to form a vesicle containing extracellular material

3 0
3 years ago
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