The molecule shown above is ____
a. a triglyceride
b. an amino acid
c. a steroid
d. a polysaccharide
e. a phospholipid
E
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Which of the following is true in the angiosperm life cycle?
a. Gametophytes originate within and are dependent upon sporophytes. b. Sporophytes originate within and are dependent upon gametophytes. c. Both gametophytes and sporophytes are totally independent from each other and are equally dominant. d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation. e. Gametophytes are photosynthetic and partially independent from the sporophytes.
What key feature of chimpanzee tool use have anthropologists identified?
What will be an ideal response?
The accommodation of the very long DNA strands that are part of a chromosome into the limited space of the nucleus is achieved by coiling the DNA around beads of histones into repeating subunits. These DNA-wrapped histones are called
A. chromatin loops B. rosettes C. nucleosomes D. solenoids
Which of the following is not a function of an essential gene?
a. energy metabolism b. fatty acid/lipid metabolism c. nucleotide synthesis d. RNA coding e. nuclear transport