Someone who is heterozygous for a recessive genetic illness is said to be ________
A) a carrier
B) pleiotropic
C) epistatic
D) allelic
A
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After removing some freshly baked cookies from the oven, you accidentally brush the side of the pan with your bare hand. Your reflexes kick in and you immediately draw your hand away. What is the proximate cause of this behavior?
A. For millions of years, your ancestors survived in part because they avoided damaging heat, and thus were able to pass on heat-avoiding genes to you. B. Drawing your hand away quickly when it encounters high heat prevents injury, thereby increasing your chances to survive and reproduce. C. Sensory receptors in the skin of your hand sent a signal to interneurons in your spinal cord, which subsequently signaled the motor neurons in your arm and hand to contract, drawing your hand away. D. You perceived the heat, judged that it would cause a burn if you left your hand in place too long, and made a conscious decision to pull your hand away.
The second law of thermodynamics states that
a. energy can be transformed into matter, and because of this, something is obtained for nothing. b. energy can be destroyed during nuclear reactions such as those that occur inside the sun. c. if energy is gained by one region of the universe, another place in the universe also must gain energy in order to maintain the balance of nature. d. energy tends to flow from concentrated to less concentrated forms. e. none of these is true.
The correct sequence of the stages of viral replication is:
a. Attachment - Synthesis - Penetration - Assembly - Release b. Penetration - Attachment - Assembly - Synthesis - Release c. Penetration - Attachment - Synthesis - Release - Assembly d. Attachment - Penetration - Assembly - Synthesis - Release e. Attachment - Penetration - Synthesis - Assembly - Release
Which of these is not part of loose connective tissue?
A. adipose cells B. chondroitin C. reticulin D. collagen E. elastin