Early on, researchers suspected that Dolly was
physically older than her chronological age because
of the results from a study of her
a. telomeres.
b. blood.
c. egg cells.
d. brain tissue.
e. teeth.
Answer: a
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Roots and shoots lengthen through activity at _____
a. apical meristems c. vascular cambium b. lateral meristems d. cork cambium
Which of the following is NOT involved in self
versus nonself recognition? a. complement b. MHC markers c. TCRs d. plasma membranes e. HLA
The Earth is spherical, which causes differences in the intensity of solar radiation at different latitudes. The Earth is also titled on its axis at a 23.5° angle. How do you think this tilt affects the intensity of solar radiation?
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Which of the following is delivered from the small intestine to the bloodstream through the lymphatic system?
A) Amino acids B) Proteins C) Lipids (fats) D) Carbohydrates (sugars)