The citric acid cycle is a series of oxidation reactions that removes carbon atoms from substrates in the form of CO2. Where do the oxygen atoms in the carbon dioxide molecules come from?
(a) water
(b) phosphates
(c) molecular oxygen
(d) acetyl CoA
(a)
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True or false: All introns have identical lengths and sequences
A. true B. false
If there are 64 potential codons that code for various amino acids but only about 20 specific amino acids, what must be true about the genetic code?
A) Most of the codons are not used. B) There are two codons for each amino acid, and the rest are stop codons. C) All are used, but bacteria and plants each have 20 different amino acids. D) Multiple codons code for the same amino acid.
Genetic engineering methods have been used to produce vaccines.
Answer the following statement true (T) or false (F)
The figure shown here is from a "meta study" of all the published findings on the relationship between the CC genotype (linked to increased novelty-seeking behavior) and scores on novelty-seeking measures. What do the light blue bars in the graph represent?
a) the average difference in novelty-seeking between CC individuals and CT individuals b) the level of dopamine-receptors found for each study c) the average number of questionnaires responded to in each study d) the number of CC individuals in each study e) the number of studies and relative CC-individual novelty-seeking scores for each one