The expensive tissue hypothesis includes the argument that
a. evolution occurs in the face of cost-benefits trade-offs.
b. maintaining the membrane potential consumes much energy.
c. there is a corresponding decrease in the size of the digestive tract that parallels the increase in brain size.
d. large brain sizes require high quality diets to support them, and high quality diets yield nutrients easily and adequately to smaller digestive tracts.
e. all of these.
E
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____ leave the blood after circulating for only a day or two and become the large tissue phagocytes known as macrophages
a. neutrophils. b. eosinophils. c. basophils. d. lymphocytes. e. monocytes.
Before beginning orthodontic treatment, a patient may have her wrist and hand x-rayed to determine her stage of growth. What feature of the long bones will the orthodontist use to assess this?
A. Spongy bone B. Osteon C. Periosteum D. Compact bone E. Epiphyseal plate
Hypocapnia will lead to which of the following conditions?
A. Hyperventilation due to alkalosis B. Hypoventilation due to acidosis C. Hypoventilation due to alkalosis D. Hyperventilation due to acidosis
What type of bond attracts one water molecule to another?
A) An ionic bond B) A hydrolytic bond C) A peptide bond D) A hydrogen bond E) A covalent bond