What is the function of the structure labeled G in the accompanying figure?
a. attachment
b. locomotion
c. protein-making
d. breathing
e. communication
ANSWER: b
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Which of the following likely triggered the Holocene extinction?
a. European colonial expansion in the 1600s b. The rising popularity of zoos in the late 1800s c. A large asteroid hitting Earth more than 250 million years ago d. An unprecedented increase of photosynthetic organisms 2.45 billion years ago
Which of the following is a form of cancer?
a. mononucleosis b. megaloblastic anemia c. hemolytic anemia d. leukemia e. iron-deficiency anemia
In a Punnett square, the letters within the little boxes represent
a. offspring genotypes. b. parental genotypes. c. gametes. d. offspring phenotypes. e. parental phenotypes.
Active transport ________
A) uses ATP as an energy source B) can move solutes against their concentration gradient C) can involve the transport of ions D) all of the answer options