Carbon atoms are the most versatile building blocks of the molecules used by living organisms because _____.
Fill in the blank(s) with correct word
Answer: each carbon atom can form up to four covalent bonds with a wide variety of bond angles
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The production of light by an organism is called ____
a. autophotoproduction b. bioluminescence c. luminarianism d. autoillumination e. bioillumination
Peroxisomes
A) are not derived from the endoplasmic reticulum. B) are bounded by double membranes. C) possess acid phosphatase activity. D) possess mannose phosphotransferase activity. E) exist only in algae and photosynthetic cells in plants.
In humans, the volume of an egg is 100 times the volume of a sperm. Compared to the amount of chromosomal DNA in an egg, the amount of chromosomal DNA in a sperm is
A) variable but usually less than one-hundredth that of the egg. B) exactly one-hundredth that of the egg. C) one-fourth that of the egg. D) one-half that of the egg. E) equal to that of the egg.
False ribs are also known as
A) vertebral ribs. B) vertebrochondral ribs. C) vertebrosternal ribs. D) floating ribs. E) both vertebrochondral ribs and floating ribs.