While looking in a tide pool, you find an animal with a two-part shell and a large foot that it uses to bury itself in the
sand. What is the likely identity of your find?
a. a gastropod
b. a chiton
c. a bivalve
d. a cephalopod
e. a snail
ANSWER: c
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What produces four daughter cells?
A. Meiosis B. Mitosis C. Both of these D. Neither of these
Imagine that you are investigating the production of insulin in normal cells to help determine the cause of faulty insulin production in cells where insulin appears to be synthesized but fails to be secreted from the cell
You design experiments using three different pharmaceutical compounds to help pinpoint the trouble spot in the protein synthetic pathway. The first compound blocks transport vesicle movement in the cytoplasm. The second blocks the SRP release from the ribosome and mRNA. The third compound binds to and blocks the signal sequence so the SRP cannot recognize it. For each of these three treatments, indicate 1) whether the protein would be made at all, and if so, 2) where in the cell you would find it. What will be an ideal response?
Which of the following choices is not a function of mitosis?
a. healing wounds b. increases in body size during growth c. replacement of old or dead cells d. formation of gametes
Uracil is found in ___________
a. both DNA and RNA b. only in RNA c. only in DNA