Membranes of thermophilic bacteria are stabilized by phospholipids with ________.
A. fatty acids that tend to be more saturated
B. fatty acids that have more double bonds
C. fatty acids that have lower molecular weights
D. All of the choices are correct.
Answer: A
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In humans, blue eyes are inherited as a recessive autosomal trait and color blindness is an X-linked recessive trait. A woman with blue eyes and normal color vision whose father was color blind marries a man who also has normal color vision
He has brown eyes, but his mother had blue eyes. Which of the following would you expect to be true for their sons? A) One-half of their sons will have normal color vision and brown eyes; 1/2 of their sons will have normal color vision and blue eyes. B) Their sons will all have normal color vision and brown eyes. C) One-fourth of their sons will be color blind and have blue eyes, 1/4 of their sons will be color blind and have brown eyes, 1/4 of their sons will have normal color vision and blue eyes, 1/4 of their sons will have normal color vision and brown eyes. D) Their sons will all have normal color vision and blue eyes. E) One-half of their sons will be color blind and have blue eyes; 1/2 their sons will be color blind and have brown eyes.
Escherichia coli O157:H7 is a major cause of hemorrhagic colitis in the United.States.
Answer the following statement true (T) or false (F)
Parasites have often been described incorrectly as having "devolved" from a more highly evolved organism. Why would it be more accurate to say that they are just as evolved as any other organism?
What will be an ideal response?
Diabetes is a chronic disease in which the body cannot produce ________________, a chemical that allows cells to take up and break down sugar from the blood.
A) erythropoietin B) human growth hormone C) aldehyde dehydrogenase D) insulin E) polysaccharide