Answer:
Enzyme
Explanation:
Enzymes are the bio-catalyst that serve to accelerate the metabolic reactions occurring in a living cell. All the metabolic reactions of organisms are catalyzed by enzymes. Each metabolic reaction is catalyzed by specific enzyme. Absence of that particular enzyme leads to absence of the respective product. Since genes code for protein which regulate the specific trait, absence of enzyme does not allow the expression of that trait.
Example: Absence of enzymes for chlorophyll synthesis would lead to absence of chlorophyll from leaves of the green plants.
Answer:
causes a cell to change: hypotonic,hypertonic
doesnt change the shape of the cell: isotonic
I dont know what the 3rd one is
Causes a cell to shrink:Hypertonic
Explanation:
Answer:
Following are the salient adaptations of villi that make them good absorbers:
Villi are single cell thick. ...
Villi have rich network of blood capillaries . ...
Most important is: Apical membranes of Villi further form many finger-like projections called microvilli or brush borders. ...
Villi have permeable membranes .
Answer: Water, in its many forms, moves all over the Earth. Water vapor moves with the air currents, falling as rain from the clouds. Frozen glaciers creep slowly down from polar regions, then recede as they warm and melt. Liquid water moves from rushing rivers to ocean currents or to groundwater.
The water, or hydrologic, cycle describes the pilgrimage of water as water molecules make their way from the Earth's surface to the atmosphere and back again, in some cases to below the surface. ... Earth's water continuously moves through the atmosphere, into and out of the oceans, over the land surface, and underground.
Explanation:
Answer:
Only the recessive allele is expressed in heterozygous individuals?
False
Explanation:
Recessive allele is always homozygous and never heterozygous as it is always dominant
