Which of the following STDs can be cured?
a. syphilis
b. gonorrhea
c. chlamydia
d. trichomoniasis
e. all of these
Answer: e
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The upper limbs are attached to the axial skeleton and supported by the ________.
Fill in the blank(s) with the appropriate word(s).
In which of the following processes do the chromosome and its homologous partner exchange corresponding pieces of DNA?
A. Crossing over B. Gametes C. Alleles D. Haploid E. Germ cell
Which statement regarding brain activity is true?
A) Recent research has revealed that the 1848 accident involving Phineas Gage caused damage to his hindbrain. B) People usually die following a hemispherectomy. C) People cannot function when the communication channels between the hemispheres are cut. D) Electrical stimulation of the cerebral cortex can cause people to experience sensations.
How does a swim bladder help the ray-finned fishes maintain buoyancy?
A) It removes water from the digestive tract. B) It removes oxygen from the water and stores it. C) Gas is added to the bladder as the fish's depth increases. D) Gas is removed from the bladder as the fish's depth increases. E) It adds and removes salt from the water stored in the bladder, which changes its density and thus its buoyancy.