Which of the following molecules can be used
as a cloning vector?
a. plasmids
b. restriction enzymes
c. recombinant DNA
d. DNA fragments
e. SNPs
A
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When muscles cells are deprived of oxygen, the heart still pumps. What must the heart cells be able to do?
A. derive sufficient energy from fermentation B. continue aerobic metabolism when skeletal muscle cannot C. transform lactate to pyruvate again D. remove lactate from the blood E. remove oxygen from lactate
If a man expresses an X-linked recessive trait, ____
a. all of his brothers will also express it b. his father transmitted the trait to him c. his father carried the trait d. all of his sisters will also express it e. his mother was heterozygous or homozygous for the trait
The endocrine system is integrated with what other system to provide coordinated control of an organism?
a. circulatory b. digestive c. integumentary d. nervous e. urinary
Which of the following statements correctly describes the vascular cambium?
A. It is important in the elongation of roots. B. It occurs only in monocot stems. C. It develops between the primary xylem and the primary phloem in dicots. D. It is formed by the ground meristem. E. It is responsible for all cell types that result from primary growth.