What are integral membrane proteins?
What will be an ideal response?
Ans: proteins that are at least partly embedded in the phospholipid bilayer which have both hydrophilic and hydrophobic region
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Pasteurization is used to
A. sterilize beverages. B. retard spoilage. C. kill any pathogens present. D. kill any pathogens present and retard spoilage.
An enzyme that cleaves internal phosphodiester bonds of a DNA molecule is a (n)
A. ligase. B. exonuclease. C. methylase. D. endonuclease.
The rate of transpiration, the flow of water through the stem, and leaf water potential are measured in a tree during a 24-hour period under normal environmental conditions. The results from these measurements are shown in the graphs below. (There is an image in your packet #97-100) 2002 test All of the following changes would be likely to decrease the rate of transpiration at 8 A.M. EXCEPT
(A) causing the stomata to close (B) increasing the humidity of the atmosphere (C) increasing the water potential of the atmosphere (D) increasing the water potential of the soil (E) placing the plant in total darkness
A man who is an achondroplastic dwarf with normal vision marries a color-blind woman of normal height. The man's father was six feet tall, and both the woman's parents were of average height
Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is X-linked recessive. How many of their daughters might be expected to be color-blind dwarfs? A) none B) half C) one out of four D) three out of four