Classification of viruses into families involves determining all the following characteristics except
A. type of capsid.
B. type of nucleic acid.
C. biochemical reactions.
D. nucleic acid strand number.
E. presence of an envelope.
Answer: C
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A person who has lost a large amount of blood but is still alive is found in a wrecked automobile under a highway bridge. Several people are helping the paramedics load the victim into the ambulance. After the ambulance has departed for the hospital, you overhear the following conversation from the persons who helped the paramedics. "I am certain that when that guy gets to the hospital, they will transfuse him with any blood that they have in the blood bank since he has lost so much blood." The other person says, "Yeah, I bet you're right!" Having had a biology course, you know which blood could be safely given to anyone. Select it below.
A. A B. B C. AB D. O
All of the following statements are true
concerning mycorrhizae EXCEPT that a. the fungus may penetrate into root cells. b. mycorrhizae increase the surface area for absorption. c. roots obtain minerals from the fungus. d. the fungus provides the plant with nitrogenrich compounds. e. it is a mutualistic symbiosis
If one strand is CCAATTG on DNA, then the complementary DNA strand is:
A. AAGGUUC B. CCAATTG C. GGTTAAC D. GGUUAAC
Oxygen and carbon dioxide bind to the same sites on the hemoglobin molecule at different times.
Answer the following statement true (T) or false (F)