The RNA World hypothesis isdirectly supported by all the following except:

A. catalytic RNAs.
B. ribozymes showing diverse function.
C. ribosome structure.
D. micelle to vesicle formation.


D

Biology & Microbiology

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The megaspore eventually becomes a _______-celled embryo sac after many cytoplasmic divisions

a. 3 b. 4 c. 7 d. 8 e. 16

Biology & Microbiology

____, the ends of eukaryotic chromosomes, shorten with every cell division

a. Centromeres b. Telomeres c. Kinetochores d. Primosomes e. Nucleosomes

Biology & Microbiology

Where do fungi perform digestion of organic molecules?

a. in special compartments called haustoria b. in special compartments called arbuscules c. in visible mushrooms d. outside their cells

Biology & Microbiology

The cell wall is a common feature to

A. prokaryotic cells only. B. all cells. C. animal cells only. D. prokaryotic and plant cells. E. plant cells only.

Biology & Microbiology