What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?
A. nuclear envelope
B. nucleus
C. nucleoplasm
D. endoplasmic reticulum
E. nucleolus
Answer: E
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Which of the following is the correct order of events in the control of the heartbeat?
1. activation of the SA node 2. contraction of the atria 3. contraction of the ventricles 4. activation of the AV node 5. transmission of the action potential through a set of modified muscle fibers A. 1, 2, 4, 5, 3 B. 1, 4, 2, 5, 3 C. 1, 3, 4, 2, 5 D. 1, 5, 4, 2, 3 E. 1, 2, 5, 4, 3
What is chemiosmosis, and how is it used to synthesize ATP? Use the following terms in your
explanation: inner mitochondria membrane, mitochondrial matrix, endergonic, exergonic, ADP, Pi, and NADH/FADH2 What will be an ideal response?
The ________ equation accounts for the movement of a single ion type, while the ________ equation takes into account the movement of multiple ions on membrane potential
Fill in the blank with correct word.
A mutant gene that produces brown eyes (bw) is located on chromosome #2 of Drosophila melanogaster, whereas a mutant gene producing bright red eyes, scarlet (st), is located on chromosome #3. Phenotypically, wild-type flies (with dull red eyes), whose
mothers had brown eyes and whose fathers had scarlet eyes, were mated. The 800 offspring possessed the following phenotypes: wild type (dull red), white, scarlet (bright red), and brown. Most of the 800 offspring had wild-type eyes, whereas those with white eyes were the least frequent. From the information presented above, how many white-eyed flies would you expect in the F2 generation? A) 50 B) 150 C) 350 D) 450 E) 200