A series of enzymatic steps that fixes carbon dioxide into carbohydrate is called the ________.
A. Calvin-Benson cycle
B. Pentose phosphate pathway
C. Entner-Doudoroff pathway
D. Embden-Meyerhoff pathway
Answer: A
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When you look at a phylogenetic tree of reptile classes, turtles, lizards and snake, and crocodiles are grouped together and birds are set off to the side but with a common ancestor for both groups. This would
A. be a monophyletic tree. B. be a paraphyletic tree. C. be a polyphyletic tree. D. have the taxonomy wrong because birds should be included with the others to make it a monophyletic tree. E. be a paraphyletic tree but the taxonomy wrong, because birds should be included with the others to make it a monophyletic tree.
A scientist might create a conditional knockout of a mouse gene when
A) a homozygous loss-of-function mutation in the gene causes embryonic lethality. B) a homozygous loss-of-function mutation in the gene produces a wild-type phenotype. C) a homozygous loss-of-function mutation in the gene affects only ears. D) a homozygous loss-of-function mutation in the gene affects only coat color.
Which of the following is/are required with actin and myosin in order to initiate muscle contraction?
A. Calcium and phosphate B. Calcium and ATP C. ATP D. Phosphate E. Calcium
Microbial metabolic activity can be measured over very short distances using
a. FISH. b. flow cytometry. c. microsensors. d. gene sequencing.