Number, and number in relation the population

a. pattern
b. frequency
c. mode
d. distribution


Ans: b. frequency

Biology & Microbiology

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Plasmolysis is the cellular loss of water. How can a cell potentially prevent this?

(a) Decreasing proton concentrations (b) Closing down the cell wall (c) Increasing the cytoplasmic solute concentration (d) Increasing the apoplastic solute concentration

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Life originated on earth in which of the following distinct phases?

a. formation of small molecules containing carbon and hydrogen b. formation of self-replicating information-containing molecules c. development of a membrane enabling metabolism and creating the first cells d. None of the above is correct. e. All of the answer options are correct.

Biology & Microbiology

Which of the following is NOT true of

euglenoids? a. Many move by pseudopods. b. Many contain chloroplasts. c. Many absorb nutrients from their environment in a heterotrophic manner. d. Their cell body is surrounded by a pellicle. e. They use a contractile vacuole to maintain water balance

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Some complement proteins form a membrane attack complex that

a. engulf an invador. b. releases cytotoxic chemicals into an invador. c. causes inflammation. d. creates a pore in an invador causing the punctured cell to disintegrate. e. protects invadors from cytotoxic chemicals.

Biology & Microbiology