What are induced pluripotent stem cells?
A. inner mass cells that have been removed without killing the embryo
B. adult stem cells that have been made in the laboratory
C. adult stem cells that are reprogrammed to become embryonic stem cells to produce new embryos
D. totipotent stems cells from a zygote that have been induced to become pluripotent
Answer: B
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If chlorophyll a is blocked from absorbing light, what would be the effect on the ability of the plant to do photosynthesis?
A. The plant will have an enhanced ability to carry out light-dependent reactions B. The plant will have an enhanced ability to carry out light-independent reactions C. The plant will have a decreased ability to carry out light-dependent reactions D. The plant's ability to carry out photosynthesis will be unchanged, as one of the accessory pigments can fill in for chlorophyll a Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the role of pigments during photosynthesis? What other information is related to the question? Choose Answer Do you have all the information needed to determine what would happen? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Direct repeats can cause mutation when
A) a person encounters a mutagen. B) homologs misalign during meiosis such that the first copy of the gene on one chromosome lies opposite the second copy on the homolog. C) introns are not removed promptly and their sequences are included in the gene product. D) they bond within the same DNA strand, forming loops that disrupt replication enzymes.
The integuments develop into the seed coat
____________________ Indicate whether the statement is true or false.
________ can be caused by stimulants such as caffeine.
A. tachycardia B. hypertension C. bradycardia D. atrial fibrillation E. hypertension