Similar body parts are not always homologous
They may have evolved independently in separate
lineages as adaptations to the same
a. reproductive isolation of these groups.
b. environmental pressures.
c. reduced genetic variability in these groups.
d. identical genes in all three groups.
e. factor as all of these.
Answer: b
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The endocrine gland that controls homeostasis in terms of blood glucose levels is the
A. parathyroid gland. B. adrenal gland. C. pineal gland. D. pancreas. E. testis.
The _____ can be used to measure whether a substance is an acid or a base.
a. pH paper b. Litmus paper c. Endothermic Reaction d. The water agar e. Blood agar
Which of the following is not a feature commonly observed in ? helices?
(a) left-handedness (b) one helical turn every 3.6 amino acids (c) cylindrical shape (d) amino acid side chains that point outward