Which of the following applies to both anagenesis and cladogenesis?
A) branching
B) increased diversity
C) speciation
D) more species
E) adaptive radiation
Answer: C) speciation
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All arthropods _____
1) undergo complete metamorphose 2) have jointed appendages 3) molt 4) have segmented bodies 5) have an exoskeleton or cuticle A) 1, 2, and 4 B) 3 and 5 C) 2, 3, 4, 5 D) 1, 4, 5 E) 1, 2, 3
In order for the scientists to artificially select Drosophila for their number of bristles,
In the laboratory, fruit flies (Drosophila) were artificially selected for the number of bristles on their bodies. One population (R) was selected for low numbers of bristles, a second population (S) for high numbers of bristles.
A. no change was seen; it's much too soon.
B. some slight increase of bristle numbers was already evident.
C. a vast, overlapping range of bristle numbers was seen.
D. a slight increase in bristles in S, a slight decrease in R, with a little overlap in the middle ranges.
E. a huge increase in S, a huge decrease in R, with no overlap whatsoever.
Commercial canning processes
A. are geared to destroy Clostridium botulinum spores. B. kill all endospores. C. are especially needed on low acid foods. D. are 12D processes (designed to kill 1012 endospores). E. are geared to destroy Clostridium botulinum spores, are especially needed on low acid foods, AND are 12D (designed to kill 1012 endospores) processes.
________ occurs when a molecule binds to an enzyme at a site other than the active site, causing a change in the enzyme that decreases the enzyme's ability to bind to its substrate.
a) Fermentation b) Allosteric inhibition c) Oxidative phosphorylation d) Allosteric activation