Diatoms are a type of algae, but with a hard silica shell. Which of the following structures would you expect to find directly underneath the silica shell?
A. a chloroplast
B. a mitochondrion
C. a nucleus
D. a cell wall
E. a plasma membrane
E. a plasma membrane
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At term, ____________________ changes initiate and drive the events surrounding birth
Fill in the blank(s) with correct word
Spiders and scorpions belong to the phylum containing the
A. annelids. B. cnidarians. C. arthropods. D. echinderms. E. mollusks.
Which of the following is one of the cardinal signs of inflammation?
What will be an ideal response?
For a cell to take up sugar from the bloodstream,
a. sugars must bind to receptors on cells of the pancreas. b. a person must have had a meal with sugar within the last twenty-four hours. c. homeostatic mechanisms must activate the blood-brain barrier. d. glycogen must be broken down to provide a supply of glucose. e. the pancreas must supply the appropriate enzymes to make sugar available.