Autism is characterized by ________
A) poor social skills B) unusual patterns of behavior
C) impaired communication skills D) all of the above
Answer: D
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Four of the five answers listed below are
produced by the same lobe of the pituitary. Select the EXCEPTION.
a. antidiuretic hormone b. prolactin c. corticotropin d. GH e. luteinizing hormone
Which of the following examples correctly demonstrates the common adage: “the needs of the many outweigh the needs of the few”?
A. Musk ox adults, when confronted by a predator, will form an outward-facing circle around the young in order to protect them from harm. B. The rosebush and its thorny stem: when an animal tries to eat the plant, it will injure its mouth and the plant will be relatively unharmed. C. When a blue jay eats a monarch butterfly, the blue jay vomits from the toxic butterfly, allowing the butterfly to escape. D. A scorpion will inject venom with the stinger of its tail when encountering prey.
Developing a novel synthetic antimicrobial drug OFTEN begins with identifying an essential ________ in the target organisms and then making slight chemical modifications to the structure to ensure that it is ________ incorporated
a. biosynthetic precursor / competitively b. biosynthetic precursor / noncompetitively c. cofactor / competitively d. cofactor / noncompetitively
Which of the following statements correctly describe(s) the role or roles of heat in biological reactions?
a. heat from the environment is necessary for substrates to get over the activation energy barrier b. the kinetic energy of the substrates is increased as the amount of heat in the system is increased c. increasing the amount of heat in a system will always increase the rate of enzyme-catalyzed reactions d. the 1st and 2nd choices are correct e. the 2nd and 3rd choices are correct