Extremophilic bacteria are able to survive in hostile environments, including scalding hot water as well as springs and vents that reach temperatures over 100°C
Researchers studying these bacteria measured the function of a protein from an extremophile bacterium at 100°C, and they also measured the function of a similar protein from a human cell at 100°C. Which of the following results do you think the researchers obtained? A) The bacterial protein functioned normally, whereas the human protein did not.
B) The human protein functioned normally, whereas the bacterial protein did not.
C) The bacterial protein and the human protein both functioned normally.
D) Neither the human protein nor the bacterial protein functioned normally.
A
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A person who has lost a large amount of blood but is still alive is found in a wrecked automobile under a highway bridge. Several people are helping the paramedics load the victim into the ambulance. After the ambulance has departed for the hospital, you overhear the following conversation from the persons who helped the paramedics. "I am certain that when that guy gets to the hospital, they will transfuse him with any blood that they have in the blood bank since he has lost so much blood." The other person says, "Yeah, I bet you're right!" Having had a biology course, you know which blood could be safely given to anyone. Select it below.
A. A B. B C. AB D. O
Keratins are considered to be obligate heterodimers in that the dimers forming their filaments must contain one __________ and one __________ subunit?
Fill in the blank(s) with the appropriate word(s).
The process of ________ involves the relaxation of the external urethral sphincter, emptying the bladder
Fill in the blank(s) with correct word
What is the most likely explanation for the occurrence of an X-linked genetic disorder in the boy at the bottom of the pedigree shown?
A) The boy inherited this allele from his father only.
B) The boy inherited this allele from his mother only.
C) The boy inherited the kind of allele that skips every other generation.
D) The boy has a new mutation for the disorder.