Which of the following does NOT describe some
aspect of polysaccharides?
a. energy storage
b. straight or branched chain
c. glucose subunits
d. contain only carbon, hydrogen, and oxygen
atoms
e. produced by condensation reactions
Answer: d
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The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the phase of the cell cycle where the blue arrow is pointing?
A. At this point in the cell cycle, the cell has determined that the DNA is intact, that environmental conditions are favorable, and it is preparing for DNA replication.
B. At this point in the cell cycle, chromosomes have properly aligned on the metaphase plate and are beginning to separate.
C. At this point in the cell cycle, DNA has already been replicated and divided into two daughter nuclei.
D. At this point in the cycle the cell is determining if environmental conditions are favorable for growth and proliferation.
E. At this point in the cycle the cell is continuing to grow and make abundant tubulin proteins.
Loud sounds cause temporary hearing loss due to damage to the:
a. eardrum b. auditory nerve c. cilia of the hair cells d. middle ear bones e. outer ear
In the life cycle of vascular plants, a
gametophyte forms from a
a. zygote. b. sporophyte. c. gamete. d. spore. e. zygote and a gamete
The contractile unit of a skeletal muscle fiber is a(n) ____
a. myofibril b. sarcomere c. myosin filament d. actin filament e. Z line