Import of mitochondrial proteins from the cytoplasm requires

a. ATP.
b. a proton electrochemical gradient across the inner membrane.
c. a potassium electrochemical gradient across the inner membrane.
d. ATP and a proton gradient across the inner membrane.


Ans: d. ATP and a proton gradient across the inner membrane.

Biology & Microbiology

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Which of the following statements is true?

a. Chromosomes are classified into two categories, the sex chromosomes that determine gender and autosomes that determine non-gender related traits. b. Homologous chromosomes differ in banding patterns, the traits they code for and size. c. While sex chromosomes determine different genders they look the same until they are stained. d. In humans all 46 chromosomes have an identical match called the homologue.

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In gill filament structures, blood flows in the opposite direction from incoming water, creating a countercurrent multiplier system

Indicate whether the statement is true or false

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If the physical expression of a heterozygous individual is intermediate between those of the homozygotes, the alleles are ________

Fill in the blank(s) with correct word

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Plants, fungi and bacterial all have

A. lysosomes. B. nuclei. C. cell walls. D. chloroplasts. E. mitochondria.

Biology & Microbiology