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3 years ago

Distinguish between the bottom-up and top-down models of community organization.

Biology

1 answer:

galina1969 [7]3 years ago

3 0

Answer:

Bottom -up models of community:

The bottom up models of the community represents the unidirectional influence of the community. The model shows from the lower to the higher tropic levels in the community. This model determines the nutrient minerals and the primary producer abundance.

Top - down models of community :

The top down model of the community represents the one tropic level to the other tropic levels. This model is also known as cascade model. This model determines how the one tropic level controls the other tropic level. For example: the control of herbivores by the predators.

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Answer:

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3 years ago

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melomori [17]

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3 years ago

brainscape: Restriction enzymes: A) act at the membrane to restrict the passage of certain molecules into the cell. B) are highl

PolarNik [594]

Answer:

C) are sequence-specific DNA endonucleases

B) degrade foreign DNA that enters a bacterium.

Explanation:

Restriction enzymes are the proteins that cut the DNA at a specific sequence.

Restriction enzymes are also known as restriction endonuclease produced by bacteria that recognizes a specific sequence on DNA and split it by catalyzing the hydrolysis or addition of water molecule. So, Restriction enzymes are sequence-specific DNA endonucleases.

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Hence, the correct options are "C and B"

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3 years ago