Which of the following is not a characteristic differentiating Neanderthals from modern humans?
a. Neanderthals had smaller brains.
b. Neanderthals were shorter.
c. Neanderthals had larger noses.
d. Neanderthals were stronger.
e. Neanderthals had projecting brow ridges.
A; Neanderthal brains were, if anything, slightly bigger than those of modern humans, although the increased cranial capacity seems to be more in the occipital region than the frontal. Whatever the case, they were built to withstand cold and other physical hardships, having shorter, stronger bodies (choices b and d), with large noses and projecting brow ridges (choices c and e).
Integrate and Apply What You've Learned (Short Answer)
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In bryophytes:
A. the diploid gametophyte produces haploid spores by meiosis. B. the haploid gametophyte produces diploid spores by fertilization. C. the male gametes require water to reach the female gametes. D. the male gametes are dispersed by wind. E. the sporophyte produces spores by mitosis.
DNA vaccines are dangerous due to the possibility of the DNA causing reversion in the inactivated pathogen
Indicate whether this statement is true or false.
All of the following are ways in which a mild fever participates as part of the body's second line of defense and aids the body EXCEPT
A) increasing the metabolic rate of body cells. B) speeding up defense reactions. C) increasing the rate of tissue repair. D) creating an inhospitable internal environment for pathogenic bacteria. E) enhancing the secretion of antibodies by plasma cells.
How does a cell rid itself of defective or malfunctioning organelles?
A) Ribosomes remove malfunctioning organelles by degrading the parts. B) The organelles are engulfed by plastids and stored. C) Defective organelles accumulate until the cell itself dies. D) Lysosomes assist in the removal of defective organelles by digesting them. E) The organelles are exported by phagocytosis.