The stomach begins chemical digestion of which of these substances?
A) sugars B) fats C) proteins D) carbohydrates
Answer: C
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A benign tumor is usually not life-threatening
Indicate whether the statement is true or false.
Which of the following does NOT happen
when body temperature rises above normal?
a. sweat glands secrete more sweat b. endocrine gland secretion of hormones that stimulate activity slow c. smooth muscle in blood vessels constrict d. skeletal muscles in the chest contract more frequently e. all of these happen when body temperature rises
Which of the following cells are alive at maturity?
a. sieve tube members b. vessel members c. tracheids d. vessel members and tracheids e. sieve tube members and vessel members
If a trait results from genetic variation as well as environmental factors, it is known as a ________ trait
Fill in the blank(s) with correct word