What is the function of the vertebral column?
A) Tear and crush food
B) Provide weight in aquatic life-forms
C) Protect the nerve cord
D) Limit muscle attachments
E) Help increase the metabolic rate
C
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The food vacuoles and phagocytic vacuoles are most similar to
A. chloroplasts. B. lysosomes. C. Golgi apparatus. D. mitochondria.
A molecule consisting of three fatty acid tails attached to glycerol is a(n)
a. carbohydrate. b. nucleic acid. c. triglyceride. d. amino acid. e. oil.
"Toilet training" in children involves control of the
a. internal urethral sphincter. b. urinary bladder. c. kidneys. d. Bowman's capsule. e. external urethral sphincter.
What is the main cause of cancer?
A) DNA replication no longer working properly B) Exposure to carcinogens in the environment C) Old age, during which the cells of the body no longer work properly D) We do not currently know the main cause of cancer.