Which organisms contain prokaryotic histonlike proteins?
a. Archaea
b. Mercaria
c. Eukarya
d. Bacteria
Ans: d. Bacteria
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A theory of eukaryotic cells and nuclear origin is based on endosymbioses, where an archaeal cell is thought to have engulfed a bacterium, which then donated genes that would eventually become the nuclear genome of an ancestral eukaryote.
Answer the following statement true (T) or false (F)
There are how many different kinds of amino acids in proteins?
a. 3 b. 6 c. 12 d. 20 e. 28
What will happen to a plant cell if placed in a hypertonic solution?
a. The cell will swell slightly. b. The cell will undergo lysis. c. The cell will become crenated. d. The cell will remain unchanged. e. The cell will undergo plasmolysis.
Of the different pathways to activate the 'Complement Cascade', both the lectin and the alternate pathways are considered a pure innate immunity response.
a. true b. false