Infolding of the cellular membrane has led to the development of the

A. nuclear envelope
B. chloroplast
C. nucleolus
D. mitochondria
E. ribosome


Answer: A

Biology & Microbiology

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The ________________ can differentiate into stems, leaves, or flowers.

A. suspensor B. shoot meristem C. basal region D. central region E. apical meristem

Biology & Microbiology

Which of the following is true regarding cell

membrane proteins? a. All are free to move laterally through the lipid bilayer. b. All are rigidly positioned. c. Some are tethered by cytoskeletal elements. d. Some form complexes. e. Some are tethered by cytoskeletal elements, and some form complexes.

Biology & Microbiology

The tiny chambers in osteons that contain osteocytes are called _____.

Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

If doubly heterozygous SsNn cactuses were allowed to self-pollinate, the F2 would segregate in which of the following ratios?

A) 3 sharp-spined : 1 spineless B) 1 sharp-spined : 2 dull-spined : 1 spineless C) 1 sharp spined : 1 dull-spined : 1 spineless D) 1 sharp-spined : 1 dull-spined E) 9 sharp-spined : 3 dull-spined : 4 spineless

Biology & Microbiology