If you force inspiration, how much more air than the tidal volume can you breathe in?
A. about two times the tidal volume
B. about three times the tidal volume
C. about five times the tidal volume
D. about six times the tidal volume
E. about four times the tidal volume
Answer: D
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In corn, having ligules (L) is dominant to liguleless (l), and green leaves (G) is dominant to white leaves (g). If a pure-breeding plant that is liguleless and has green leaves is crossed to a pure-breeding plant with white leaves and ligules, predict the genotypes and phenotypes of the F1.
A) LL GG, green and ligules B) Ll GG, green and ligules C) Ll Gg, green and ligules D) ll gg, white and liguleless E) Ll gg, green and liguleless
Which of the following hormones is different from the others based upon the extent of its target cells?
a. corticotropin b. luteinizing hormone c. somatotropin d. thyrotropin e. follicle-stimulating hormone
You are dissecting a fish in your biology laboratory section. Your teaching assistant points out a long oval structure and tells you it is an endocrine gland. Which of the following would you then know is a true statement about this structure?
A) It secretes a product that is released through a series of ducts. B) The gland's product will only interact with receptors on the cell membrane. C) The gland's product is lipid soluble. D) The gland produces and secretes its product into the blood.
Why don't the grafted hybrids produce apples with a blend of traits from the scion and the rootstock?
A) The rootstock suppresses activation of the scion genes, which alters fruit production. B) The rootstock is unable to perform photosynthesis and so can't produce fruit. C) Transplanted nuclei from scion cells regulate gene expression in the rootstock. D) The rootstock regulates gene expression in the scion but contributes no genetic information for fruit production.