A haploid structure contains __________________, and a diploid structure contains _______________
A. one set of chromosomes (1n); two sets of
chromosomes (2n)
B. three sets of chromosomes (3n); two sets
of chromosomes (2n)
C. two sets of chromosomes (2n); one set of
chromosome (1n)
D. one set of chromosomes (1n); three sets
of chromosomes (3n)
A
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Lateral inhibition via amacrine cells in the mammalian retina _____
A) underlies habituation of vision B) enhances visual contrast C) prevents bleaching in bright light D) is required for color vision to occur E) recycles neurotransmitter molecules
An abnormal increase in the number of normal cells in the tissues, organs or cells.
A. Anaplasia B. Hypoplasia C. Hyperplasia D. Dysplasia E. None of the above.
A scientist fused a mouse cell and a human cell, then treated the cell with specific antibodies covalently linked to
colored fluorescent dyes (antibodies to mouse proteins were labeled green; antibodies to human proteins were labeled red). Forty minutes later, what will the researcher observe?
a. The fused cell will still be half red and half green. b. The red and green fluorescent labels will be uniformly distributed throughout the entire membrane. c. The red and green labels will be distributed in intermingled patches. d. The red and green labels will flash intermittently. e. The red and green labels will be distributed in a swirling pattern.
Known for the ability to dive deep, the ____ has set a record of 1530 m
a. harbor seal b. Weddel seal c. Steller's sea lion d. leopard seal e. northern elephant seal