The only known source of human embryonic stem cells is:
a. placental tissue.
b. umbilical cords.
c. early human embryos.
d. brain tissue.
e. nerve tissue.
c
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If you place a small piece of a cracker on your tongue, what would you expect to happen?
A) The vitamins in the cracker are immediately absorbed. B) Salivary amylase degrades the starch from the cracker into glucose. C) The proteins in the cracker begin to be digested. D) The flavor becomes less noticeable because the sugars are digested.
How many protons are translocated across the inner mitochondrial membrane by complex III for each pair of electrons passing through the electron transport chain?
A) 0 B) 1 C) 2 D) 4
The purpose of the penicillin binding proteins is to link phospholipids together in the cellular membrane.
Answer the following statement true (T) or false (F)
In the four body plan cross sections shown on the last two slides, what major omission has been made for all four animal phyla?
A. heart B. fur C. nervous system D. A and B E. A and C F. B and C G. A, B and C