Coal was formed primarily as a result of the existence of non-vascular plants
Indicate whether the statement is true or false.
ANS: F, seedless vascular
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The ________ is comprised of the fluid portion of the cell and contains the organelles.
Fill in the blank(s) with the appropriate word(s).
How do lymphatic capillaries differ from blood capillaries?
A) They contain red blood cells. B) They have a wall only one cell layer thick. C) They are made by lymphocytes. D) They contain plasma. E) They have "dead ends."
Which of the following statements is TRUE for prokaryotes?
a) They generally lack organelles (such as nuclei). b) Their DNA is associated with histone proteins. c) Their cell walls are chemically simple. d) They are multicellular organisms.
At the end of the Gram stain, gram-positive bacteria will be seen as pink cells.
a. true b. false