The chemical group box 1 in the accompanying figure is a:
a. pyrimidine.
b. purine.
c. phosphate.
d. amino acid.
e. covalent bond
a
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Why is there free oxygen in the air?
A. Organisms need oxygen to manufacture ATP. B. Free oxygen has been present since the formation of the earth's atmosphere. C. Evaporation of the oceans liberated oxygen. D. It is a by-product of photosynthesis. E. Free oxygen has seeped from cracks in the earth's crust.
Which of the following would you likely find for the amino acids that are part of a protein that is embedded within the lipid bilayer?
What will be an ideal response?
Which is not a mycoses?
a. dandruff b. ringworm c. athletes foot d. Lyme disease
Which type of lipid is incorrectly matched to its description?
A) Phospholipid: An amphipathic lipid found in the plasma membrane of cells B) Wax: Refers to any lipid which is solid at room temperature C) Mono-, di-, or triglyceride: One, two, or three fatty acids linked to a glycerol molecule D) Steroid: Made of four fused hydrocarbon rings E) Glycolipid: A lipid linked to a carbohydrate