The accompanying figure shows that humans have thicker thumb metacarpals than chimpanzees or bonobos, with broader heads. This is directly correlated with humans' ________
A) bar-shaped central portion of the hyoid bone
B) increasing dependence on meat in the diet
C) more elaborate thumb musculature and better precision grip
D) loss of the ability to knuckle-walk
E) loss of an arboreal (tree-based) lifestyle
C
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Which type of microscopy passes light directly through a stained and killed specimen?
a. confocal laser scanning microscopy b. phase-contrast microscopy c. bright field microscopy d. scanning electron microscopy e. fluorescence microscopy
Aspergillus is a mold that causes an allergic reaction when its spores are inhaled
Indicate whether the statement is true or false
Biologists usually classify things according to their:
a. appearance b. habitat c. when they lived
Amniocentesis and chorionic villus sampling allow for ________ and ________ of the fetus so that it can be tested for abnormalities
A) imaging; karyotyping B) sexing; imaging C) karyotyping; biochemical testing D) direct observation; biochemical testing