Which of the following is essential for chemical reactions, metabolic processes, and body
temperature regulation?
a. water
b. oxygen
c. carbon dioxide
d. all of these
A
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You discover a new species of protist. Which of the following characteristics would provide the strongest evidence for your hypothesis that your species belongs in Euglenida?
A) It is photosynthetic. B) It contains the carbohydrate paramylon. C) It reproduces asexually. D) It is unicellular. E) It lacks a cell wall.
Trakr, the Ground Zero hero dog, was cloned in the hope that _____
a. his clones would be adopted as pets b. his clones would be better search and rescue dogs as he was c. he would be the world's first cloned mammal d. his clones would be just as good search and rescue dogs as he was e. he would be brought back to life
If cell X enters meiosis, and nondisjunction of one chromosome occurs in one of its daughter cells during meiosis II, what will be the result at the completion of meiosis?
A) All the gametes descended from cell X will be diploid. B) Half of the gametes descended from cell X will be n + 1, and half will be n - 1. C) 1/4 of the gametes descended from cell X will be n + 1, 1/4 will be n - 1, and 1/2 will be n. D) Two of the four gametes descended from cell X will be haploid, and two will be diploid.
What would be an easy way to determine if a skull is a mammal's skull?
A. Look for the remains of the tympanum. B. Examine the teeth. C. Measure the brain case volume. D. Look for air sacs in the skull.