Which of the following is true regarding quadrats?
a. A full population count is usually impractical.
b. Quadrats are plots of land of the same size and
shape that can be used to randomly count a
single non-migrating species.
c. Once several quadrats are counted, an estimate
of number of a particular organism can be
extrapolated for a given land mass.
d. Sampling error is common if the size of the
quadrats is not large.
e. All of these are correct.
Answer: e
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How does sickle cell anemia reduce the blood’s ability to deliver oxygen to tissues?
a. The plasma membrane is too thick to allow oxygen to diffuse into sickle-shaped red blood cells. b. Sickle-shaped red blood cells puncture normal red blood cells, causing them to rupture and lose hemoglobin. c. Deformed red blood cells clog capillaries, preventing other red blood cells from passing through. d. Sickle cells contain a mutated form of hemoglobin that binds to half as many oxygen molecules.
Discuss the advantages of a closed circulatory system, compared to an open circulatory system
What will be an ideal response?
What type of plant tissue includes the starch-storing tissues, such as white potatoes?
A) xylem B) phloem C) meristematic tissue D) ground tissue
What technique is used to amplify a target gene of interest?
What will be an ideal response?