A karyotype
a. compares one set of chromosomes to another.
b. is a visual display of chromosomes arranged according to size.
c. is a photograph of cells undergoing mitosis during anaphase.
d. of a normal human cell shows 48 chromosomes.
e. can reveal the genotype of an individual.
B
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Eukaryotes have the ability to take in nutrients by phagocytosis, whereas prokaryotes do not. Which of the following explains the advantage this brings to eukaryotes?
A. Eukaryotes are able to get bigger because they can now ingest larger materials. B. Phagocytosis provides eukaryotes with a way of obtaining more DNA for their genome, which allows them to become more complex. C. Phagocytosis provides eukaryotes with a way of obtaining more RNA for translation, which allows them to become more complex. D. Eukaryotes are able to exploit other, more complex materials for food that prokaryotes cannot. E. None of the answers options is correct.
The conclusion that early hominins were bipedal is based in part on examination of four of the following. Which one
is the exception? a. their S-shaped backbone b. the position of the opening for the spinal cord in the skull c. footprints d. their jaw shape e. length of the femur
Which of the following represents the pattern of energy flow within an ecosystem?
a. producers ? consumers ? decomposers b. decomposers ? producers ? consumers c. consumers ? producers ? decomposers d. decomposers ? consumers ? producers e. producers ? decomposers ? consumers
Tay-Sachs disease
A) causes an accumulation of lipids in brain cells. B) involves damage to liver cells. C) is due to the absence of an enzyme that digests polysaccharides. D) prevents the breakdown of glycogen.