WHich of the following glands may function in helping to control the reproductive cycle?
a. thyroid
b. pineal
c. thymus
d. pancreas
e. kidney
B
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In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite forms of both traits, how many of the offspring would be expected to be homozygous recessive for both traits?
A. 9 out of 16 B. 6 out of 16 C. 1 out of 16 D. 3 out of 16
Consider the metabolic repertoire of prokaryotes and the diverse environments in which they can thrive to answer the following questions
Autotrophs produce carbohydrates by reducing CO2 whereas heterotrophs synthesize carbohydrates by reducing preformed organic compounds like glucose. A. true B. false
Which body system plays a role in influencing behavior?
A. muscular and neural B. respiratory and urinary C. nervous and endocrine D. endocrine and urinary E. None of these systems will influence behavior.
Which of the following are sources of greenhouse gases?
A. Burning forests to clear agricultural land B. Gastrointestinal tract of ruminants C. Combustion of fossil fuels D. Decaying vegetation in swamps E. All of these choices are correct.