Slash-and-burn agriculture affects global warming by ___
a. adding more methane gas to the environment, thereby increasing greenhouse gases
b. removing methan producers from the environment, thereby decreasing greenhouse gases
c. removing photosynthetic organisms from the environment, thereby increasing CO2 in the environment
d. removing photosynthetic organisms from the environment, thereby decreasing CO2 in the environment
e. no effect will be seen in global warming or greenhouse gases from this type of agriculture
Answer: c. removing photosynthetic organisms from the environment, thereby increasing CO2 in the environment
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Which of the following events concerning a response to a stimulus comes first?
a. transmission b. reception c. action by effectors d. involvement of the brain and spinal cord e. integration
Which statement about complementary base pairing is not true?
a. Complementary base pairing plays a role in DNA replication. b. In DNA, T pairs with A. c. Purines pair with purines, and pyrimidines pair with pyrimidines. d. In DNA, C pairs with G. e. The base pairs are of equal length.
While at the scene of an incident in which several patients were possibly exposed to lewisite, you are informed that an unresponsive patient with multiple blisters on his body and inadequate breathing is being brought to you for treatment. You should:
A) prepare your intubation equipment and set up two IV lines of normal saline. B) have the appropriate antidote ready and notify the burn center of the situation. C) ensure that the patient has been decontaminated before initiating any treatment. D) don the appropriate personal protective equipment to avoid cross-contamination.
You discover a new alien race that you decide to call the PAMMARIANS. They are different from us in that they have three sexes, called Q, R, and S. All three sexes must fuse their gametes to form a new PAMMARIAN (and you thought dating on the Earth was
hard!). They have nuclear DNA and extrachromosomal organelles, similar to mitochondria, called MITOCHLORIANS, which have their own DNA. The R gender is like human females (they donate the cytoplasm during the mating). Q and S do NOT donate cytoplasm during mating, like human males. Which of the following is TRUE? A) In a mating, if the S and Q genders have a mitochlorian DNA mutation, the offspring will be mutant as well. B) In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype. C) In a mating, if only the R gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype. D) In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring WILL HAVE a mitochlorian mutant phenotype. E) In a mating, if only the S gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring WILL HAVE a mitochlorian mutant phenotype.