Master genes that affect development tend to be highly ____; therefore, similarities in patterns of embryonic development reflect shared ancestry that can be evolutionarily ancient.
a. homologous
b. degraded
c. conserved
d. mutated
e. related
ANSWER: c
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The molecule shown above is the purine ____
a. thymine b. adenine c. uracil d. guanine e. cytosine
The difference between somatic cell gene therapy and germline therapy is that
A. germline therapy is the temporary repair of a genetic mutation, whereas somatic cell therapy is a permanent fix. B. germline therapy overcomes a protein malfunction in specific tissues but is not repaired in the entire organism and cannot be passed on to offspring. C. somatic cell gene therapy is introduced into the egg, sperm or developing embryo, whereas germline therapy introduces a new gene into a mature tissue. D. somatic cell gene therapy overcomes a protein malfunction in specific tissues but is not repaired in the entire organism and cannot be passed on to offspring.
Which of the following is dense connective tissue
that joins two bones? a. sutures b. ligaments c. muscles d. tendons e. fascia
Who demonstrated that cell-produced proteins called enzymes were responsible for chemical reactions in a cell?
Eduard Buchner Robert Koch Lazzaro Spallanzani Louis Pasteur