When the atoms involved in a covalent bond have the same electronegativity, what type of bond results?
A) an ionic bond
B) a hydrogen bond
C) a nonpolar covalent bond
D) a polar covalent bond
C
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The Calvin cycle includes 15 enzymes, most of which are involved in __________
A. RuBP carboxylation B. RuBP regeneration C. reduction D. starch synthesis E. ATP synthesis
The principal difference between endocrine glands and paracrine glands is that
a. paracrine glands are directly controlled by nerves. b. paracrine glands secrete steroid hormones, and endocrine glands secrete peptide hormones. c. endocrine glands act over a longer distance. d. paracrine glands are larger and easier to remove surgically. e. only the paracrine glands have a duct.
"Toilet training" in children involves control of the
a. internal urethral sphincter. b. urinary bladder. c. kidneys. d. Bowman's capsule. e. external urethral sphincter.
A patient with which blood type can donate blood to anyone?
A) type A B) type B C) type AB D) type O