Why do most cells in the body require oxygen molecules?
a. Glucose cannot be broken down without it.
b. It pulls electrons off the electron transport chains in the last part of cellular respiration.
c. The electron transport system must pump it through the inner membrane for chemiosmosis.
d. ATP synthase uses it to add a phosphate ion to ADP in order to make ATP.
e. It pulls electrons off the electron transport chains in the last part of cellular respiration and ATP synthase uses it to add a phosphate ion to ADP in order to make ATP.
B
You might also like to view...
A cancer that is able to spread and become worse is called
A. benign B. metastasis C. malignant D. carcinoma E. sarcoma
People with type "O" blood are considered "universal donors" for transfusions because __________.
a) they usually have very strong red blood cells b) their blood lacks A and B agglutinins c) their blood is plentiful in A and B agglutinins d) their blood lacks A and B antigens
__________ is a cytochrome P450 enzyme that metabolizes androgens to estrogens
A) Aromatase B) Phenylethanolamine N-methyltransferase C) Tyrosine hydroxylase D) Steroid 22-hydroxylase Fill in the blank with the correct answer.
Which of the following muscles functions to maintain an erect spinal column and head?
A) erector spinae B) biceps brachii C) triceps brachii D) rectus femoris E) biceps femoris