The major source of electrons for tumor-infiltrated T cells is
a) Glucose
b) PEP
c) PEP carboxykinase
d) Oxygen
Answer: b) PEP
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What is the probability that each of the following pairs of parents will produce the indicated offspring?
A) AABBCC × aabbcc ? AaBbCc B) AABbCc × AaBbCc ? AAbbCC C) AaBbCc × AaBbCc ? AaBbCc D) aaBbCC × AABbcc ? AaBbCc
Radioactive isotopes are used in dating materials from the distant past. Which of the following statements about radioactive dating techniques is true?
A. It gives the general ages of rock strata. (±1 million years). B. It gives exact ages of rock strata. (± 1 year). C. It uses a technique in which the degree of radioactive decay is measured, the younger the rock the more radioactive decay. D. It uses a technique in which the degree of radioactive decay is measured, the older the rock the more radioactive decay. E. It does not work well with fossil remains that have not absorbed radiation.
A eukaryotic chromosome would most likely have only one origin of replication
__________________ Indicate whether the statement is true or false.
Which of the following matches between evolutionary evidence and biological disciplines is NOT
correct?
a. Pesticide resistance: Historical biogeography b. Forelimbs or all four legged vertebrates are homologous: Comparative morphology c. Short tails of African and Asian monkeys: Historical biogeography d. Gill pouches in embryos of four-limbed vertebrates: Comparative embryology e. Species on oceanic islands often closely resemble species on the nearby mainland:Comparative embryology