In general, the vessels that return blood to the heart in a closed circulatory system are referred to as
A. arteries.
B. veins.
C. capillaries.
D. sinuses.
E. auxiliary hearts.
B. veins.
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To grow roses commercially, which growing conditions would be optimal?
What will be an ideal response?
Biochemical evidence supporting the sliding filament model of muscle contraction includes the observation that
A) myosin light chains can be phosphorylated. B) titin connects each end of a thick filament to a Z line. C) TnC binds Ca2+. D) actin has polymerization ATPase activity. E) myosin has an ATP-dependent crossbridge cycle.
Which process used to solve problems in science involves accumulating facts through observation until the evidence leads to a general statement about nature?
A) deductive reasoning B) hypothesis C) inductive reasoning D) theory
The characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it ____________.
A. can synthesize mRNA from a double-stranded DNA template. B. inserts into the DNA of the host C. causes hepatitis D. can synthesize DNA from an RNA template