The placenta performs all of the following functions EXCEPT for ____
a. mixing maternal and fetal blood for immunity
b. oxygen delivery to fetus
c. waste removal from fetus
d. progesterone production
e. nutrient delivery to fetus
ANSWER: a
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What do the cell walls of plants and the extracellular matrix of animal cells have in common?
A) They are largely composed of phospholipids and glycoproteins. B) Their proteins are made by free cytoplasmic ribosomes. C) They form rigid structures that provide structural support for cells but limit their expansion. D) They limit the passage of small molecules. E) They have functional connections with the cytoskeleton inside the cell.
Cells remain organized for long periods of time and new, organized cells form. Why does this not go against the Second Law of Thermodynamics?
What will be an ideal response?
____ are involved in the transfer of genetic information from one bacterial cell to another
a. Flagella b. Pili c. Cilia d. Ribosomes e. Bacterial chromosomes
The marine multicellular protists including the larger brown algae belong to the
A. foraminifera. B. Choanoflagellida. C. Stramenopiles. D. euglenoids. E. dinoflagellates.