The use of heat lessens the amount of time needed to disinfect or sterilize medical instruments
Indicate whether the statement is true or false
True
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RNA polymerase binds to the
A. promoter sequence. B. start codon. C. termination sequence. D. regulation sequence.
If Darwin had been aware of genes and their typical mode of transmission to subsequent generations, with which statement would he most likely have been in agreement?
A) If natural selection can change gene frequency in a population over generations, given enough time and genetic diversity, then natural selection can cause sufficient genetic change to produce new species from old ones. B) If an organism's somatic cell genes change during its lifetime, making it more fit, then it will be able to pass these genes on to its offspring. C) If an organism acquires new genes by engulfing, or being infected by, another organism, then a new genetic species will result. D) A single mutation in a single gene in a single gamete, if inherited by future generations, will produce a new species.
The role of a control in an experiment is to
A) provide a basis of comparison to the experimental group. B) prove that a hypothesis is correct. C) ensure repeatability.
The sperm head encloses a compact nucleus and is capped by a vesicle called what?
A. vas deferens B. acrosome C. epididymis D. Sertoli cell E. flagellum