Which of the following is not a type of symbiosis?
A. parasitism
B. mutualism
C. commensalism
D. predation
E. None of the answer choices is correct.
D. predation
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Which of the following statements is correct regarding DNA and RNA?
A. DNA and RNA both leave the nucleus after being produced. B. DNA and RNA both stay in the nucleus after being produced. C. DNA remains in the nucleus at all times; RNA is produced in the nucleus but then leaves the nucleus. D. RNA remains in the nucleus at all times; DNA is produced in the nucleus but then leaves the nucleus.
What is the basic problem with cloning adult animals?
a. obtaining enough DNA b. finding proper surrogates to carry the cloned embryos c. reprogramming the DNA d. obtaining DNA without mutations e. autoimmune rejection of the embryo by the surrogate
What cells of the immune system will help the body respond more quickly if the infectious agent is encountered again?
A) complement B) cytotoxic C) helper D) memory
Resource partitioning occurs:
a. when the same plants produce different seed types. b. seldomly in sympatric speciation. c. only in lakes. d. when different habitat preferences result in different diets.