The oxygen dissociation curve of human fetal hemoglobin differs significantly from that of the mother, as shown below. What characteristic of fetal hemoglobin might account for the fact that fetal hemoglobin is able to pick up oxygen from the mother's blood at a significant distance from the mother's lungs?
Answer(s): B
The choice that makes the most sense here is that fetal hemoglobin can bind to oxygen at lower partial pressures. The "pressure" of oxygen is highest in the bloodstream at the lungs but falls progressively as blood moves through the body, since oxygen is leaving and there is less oxygen gas. By the time maternal blood reaches the placenta, the partial pressure of oxygen has fallen dramatically, yet fetal hemoglobin is able to fully saturate itself with oxygen at these lower partial pressures, something that adult hemoglobin could not do. This is an important physiological adaptation for the fetus in order to pull the maximum amount of oxygen from the mother's bloodstream into the fetal bloodstream.
Red plants (R) are dominant to green plants (r). Crossing homozygous red plants with homozygous green plants would result in which of the following phenotype/genotype combinations?
Crossing red plants (RR) with green ones (rr) would result in 100% Rr offspring, which would all be red since they have at least one copy of the dominant allele (R).
Proteins that bind to the surfaces of pathogens and help to destroy the pathogens are known as
Answer(s): A
Antibodies are Y-shaped proteins secreted by plasma B cells. These proteins can attach to and cause the clumping together of pathogenic cells or toxin molecules, which are then engulfed and destroyed by macrophages. The antigens are the foreign proteins on the pathogen surface that the antibodies bind to.
Mammals share all of the following characteristics with other vertebrates EXCEPT
Answer(s): E
Only mammals have mammary glands (breasts) for milk production. All other features listed are shared with at least oneother group of vertebrates. All vertebrates from fish to mammals have representative species with lungs; all vertebrate groups have some species that can lay eggs; and, birds share endothermy, or warm-bloodedness, with mammals.
The graph below shows the effectiveness of an enzyme at various temperatures ranging from 0 degrees Celsius to 60 degrees Celsius. What is the best explanation for the behavior of this enzyme at temperatures higher than approximately 40 degrees Celsius?
Answer(s): C
The best explanation is that heat had caused the denaturation of the enzyme. Enzymes are sensitive to temperature, pH, and certain other conditions. If the conditions become too extreme, enzymes lose their 3-D shapes and cannot function.
Share your comments for Test Prep CLEP Science and Mathematics exam with other users:
question 13 tda - c01 answer : quick table calculation -> percentage of total , compute using table down
pls share teh dump
question 44 answer is user risk
please post the questions for preparation
thanks for the questions
please reopen it now ..its really urgent
these practice exam questions were exactly what i needed. the variety of questions and the realistic exam-like environment they created helped me assess my strengths and weaknesses. i felt more confident and well-prepared on exam day, and i owe it to this exam dumps!
thank u it very instructuf
its helpful?
is this dump still valid???
question 205 answer is b
question 39, should be answer b, directions stated is being sudneted from /21 to a /23. a /23 has 512 ips so 510 hosts. and can make 4 subnets out of the /21
beautiful test engine software and very helpful. questions are same as in the real exam. i passed my paper.
the questions are exactly the same in real exam. just make sure not to answer all them correct or else they suspect you are cheating.
question: 78 the right answer i think is d not a
very helpful
i am writing this exam tomorrow and have dumps
can i have the icdl excel exam
please upload it
hye when will post again the past year question for this h13-311_v3 part since i have to for my test tommorow…thank you very much
on question 22, option b-once per session is also valid.
this website is very helpful
its my first time exam
correct answers are device configuration-enable the automatic installation of webview2 runtime. & policy management- prevent users from submitting feedback.
is this dump still valid? today is 9-july-2023
i need this exam.. please upload these are really helpful
please upload the oracle 1z0-1059-22 dumps
very good questions
nice, first step to exams
is this valid for chfiv9 as well... as i am reker 3rd time...
great exam for people taking 220-1101
this is very helpfull for me
just started preparing for the exam
these are the type of questions i need.