Identify the structure of the neuron marked A
a. axon terminal
b. cell body
c. axon
d. glial cell
e. dendrites
E
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Regarding soil and organic matter in humus, which of the following statements is true?
A) Humus is composed of inorganic nutrients, and organic matter is composed only of organic matter. B) Soil organic matter is completely decayed. C) Completely decayed soil organic matter is called humus. D) Eventually, the nutrients in soil organic matter are converted to organic form.
You have just discovered an organism that lives in extremely cold environments. Which of the following would you predict to be true about the phospholipids in its membranes, compared to phospholipids in the membranes of organisms
that live in warmer environments? A) The membrane phospholipids of cold-adapted organisms will have longer hydrocarbon tails. B) The membrane phospholipids of cold-adapted organisms will have more saturated hydrocarbon tails. C) The membrane phospholipids of cold-adapted organisms will have more unsaturated hydrocarbon tails.
The skeletal system performs four of the following functions. Which is NOT one of the skeletal system’s functions?
a. supporting and protecting body parts b. being a site for muscle attachment c. producing red blood cells d. maintaining body temperature e. storing minerals
Which of the following characteristics of a fossil suggests that the species does not belong to the hominin group?
A) bipedal walking B) protruding brow ridges C) small canine teeth D) a flat face