True or false: There are approximately the same number of protein families as there are folding domains
A. true B. false
Answer: B
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Answer the following statements true (T) or false (F)
1. The internal structure of procaryotic flagella is the same as the internal structure of eucaryotic flagella. 2. The internal structure of eucaryotic cilia is the same as the internal structure of eucaryotic flagella. 3. The production of endospores by bacteria is a reproductive mechanism. 4. Bacteria never have cilia and eucaryotic cells never have pili. 5. The 3-Domain System of classification is based on differences in the structure of transfer RNA (tRNA) molecules.
Based on fossil evidence, ____ is the oldest of the species listed
a. Homo habilis b. Homo erectus c. Australopithecus africanus
d. Australopithecus afarensis e. Homo neanderthalensis
The step of translation in which an mRNA, a small ribosomal subunit, and tRNA carrying methionine, are aligned together is
A. termination.
B. elongation.
C. initiation.
D. transcription.
E. mitosis.
Imprinting, habituation, and conditioning are all examples of
A. canalization B. fixation C. maturation D. learning