The start of centrosome duplication begins at the ______ transition.
a) M-g1
b) S-G2
c) G1-M
d) G2-M
e) G1-S
Ans: e) G1-S
Biology & Microbiology
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The plasma membrane is composed of ____
a. water and salts b. proteins c. nucleic acids d. primarily phospholipids e. proteins and carbohydrates
Biology & Microbiology
A portion of mRNA attached to a ribosome reads: 5? GACCAUUUUUGA 3? In the polypeptide produced, what amino acid will be attached to the amino group of the histidine encoded by this mRNA?
A) Aspartic acid B) Proline C) Serine D) Phenylalanine E) Tyrosine
Biology & Microbiology
With regards to prokaryotes and eukaryotes, all of the following are true except
Biology & Microbiology
A common characteristic of Choanoflagellida is
A. a single, unique mitochondria. B. silica covering. C. funnel-shaped, contractile collar. D. space beneath the plasma membrane. E. presence of a plasmodium.
Biology & Microbiology