A karyotype of chromosomes from a cancer cell would be most likely to exhibit
A) polyploidy.
B) a single missing chromosome.
C) a single extra chromosome.
D) a normal set of chromosomes because only point mutations have occurred.
A) polyploidy.
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The ____ of the eye is a tissue that is densely
packed with photoreceptors. In the above diagram of the eye, which letter identifies it?
a. lens; A b. vitreous body; C c. retina; C d. sclera; A e. cornea; D
Rheumatoid arthritis in an _____ that affects the _____.
A) allergy, cartilage B) immunodeficiency disease, muscles C) autoimmune disease, nerves D) autoimmune disease, joints
Which of the following methods do fungi use in order to penetrate the initial layer of a plant's defenses?
A. entry through stomates B. mechanical bridging C. sharp mouthparts D. secretion of phospholipids to dissolve the cuticle
Assuming that aerobic metabolism starts with glucose as its fuel, approximately _____% of the energy of the starting molecules will be captured in a useful form. The remaining energy will be converted to _____ and will be either lost or used to _____
A. 42; heat; warm the animal B. 42; electricity; keep the circulatory system functioning C. 58; heat; warm the animal D. 75; light; carry out photosynthesis E. 42; light; carry out photosynthesis