A major change occurring in the evolution of eukaryotes from prokaryotes was the development of:

A) DNA.
B) photosynthetic capability.
C) plasma membranes.
D) ribosomes.
E) the nucleus


Ans: E) the nucleus

Biology & Microbiology

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An energy pyramid is ____

a. a demonstration of the first law of thermodynamics b. a representation of the decline in available energy as it travels through the trophic levels c. fundamentally different from the pyramid of biomass and the pyramid of numbers d. a demonstration of the interactions between species in a community e. a representation of an ecosystem's diversity

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After infection occurs, the first line of defense for a host against a parasite is the ________ response

Fill in the blank(s) with correct word

Biology & Microbiology

Each animal species appears to have a fixed maximum life span.

Indicate whether the statement is true or false.

Biology & Microbiology

A(n) (acidic/metallic/fluorescent) molecule is one that absorbs invisible radiation and emits visible light

What will be an ideal response?

Biology & Microbiology