Translocation in sieve tubes requires passive transport
a. True
b. False
ANSWER: True
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For sexually reproducing organisms, a species
consists of a. individuals sharing a habitat. b. a group of reproductive females. c. populations that have the potential to interbreed and produce fertile offspring. d. individuals that have the same nutritional requirements. e. individuals in the same geographical range with similar ecological requirements.
Although children believe that "holding my breath until I die" is possible, why should parents not be concerned by this threat?
A) As a child holds his or her breath, oxygen levels build, stimulating breathing by the brain stem. B) As a child holds his or her breath, oxygen levels decrease, stimulating breathing by the brain stem. C) As a child holds his or her breath, carbon dioxide levels decrease, stimulating breathing by the brain stem. D) As a child holds his or her breath, carbon dioxide levels increase, stimulating breathing by the brain stem.
Sugar groups may be added to proteins in which of the following?
A. smooth endoplasmic reticulum B. rough endoplasmic reticulum C. Golgi apparatus D. lysome
What is the term for organisms in which internally-fertilized eggs are laid to develop and hatch outside the mother's body?
A. Viviparous B. Marsupial C. Ovoviviparous D. Placental E. Oviparous