Glucose moves through a protein transporter down its concentration gradient into the cell. This is an example of ____
a. diffusion
b. endocytosis
c. exocytosis
d. osmosis
e. facilitated diffusion
ANSWER: e
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Which of the following systems is the first to begin
development in the human embryo? a. nervous system b. excretory system c. reproductive system d. skeletal system e. endocrine system
In butterflies, males are the ________ sex
A) homozygous B) heterozygous C) homogametic D) heterogametic E) hemizygous
Studies of Neurospora led to the ________ statement, whereas studies of human hemoglobin led to the ________ statement
Fill in the blank(s) with correct word
The carrying capacity for a plant species can decrease when ______.
A. natural selection occurs B. germination starts too early C. plants evolve a quick-growing trait D. the population of pollinators increase E. soil nutrients are become depleted