How many genera of great apes are represented in this illustration?
a. two
b. five
c. four
d. one
c. four
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If short hair (L) is dominant to long hair (l), animals LL and Ll have the same
a. parents. b. genotypes. c. phenotypes. d. alleles. e. genes.
Aquatic animals that rely on external fertilization for reproduction have a low probability of successful fertilization. Which of the following is a mechanism used to increase the liklihood of successful external fertilization?
A. courtship rituals to synchronize male/female gamete release B. depositing sperm into the female reproductive tract C. production of extremely large number of gametes that are released simultaneously D. containment of sperm within spermatophores
Using the data from the graphs and what you know about membranes and metabolic pathways, predict which of the following is the likely reason why actions of aquaporins in a membrane can change so rapidly
A) The number of aquaporins in the membrane is constant, but the pores have to be activated. B) Aquaporins are inserted into the membrane as needed. C) Aquaporins are only in cells that need to be permeable to water. D) Aquaporins use ATP to pump water across the membrane, and their action is limited by the metabolic pathways that produce ATP.
A gel electrophoresis is performed, but when the gel imager is used, no bands appear. The researcher might have forgotten to
A) add electric current. B) add antibody. C) ligate the DNA fragments together. D) include DNA dye. E) include an RNA probe.