The knuckles of the hand are formed by the distal ends of the ________.
A. metacarpals
B. carpals
C. tarsals
D. metatarsals
E. phalanges
Answer: A
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________ transport is required to move a substance across a membrane against a concentration gradient.
Fill in the blank(s) with the appropriate word(s).
All of the following are true of the kidneys except that they are
A) located in a position that is retroperitoneal. B) surrounded by a fibrous capsule. C) located partly within the pelvic cavity. D) held in place by the renal fascia. E) covered by peritoneum.
Why is it life-threatening to have a low pH?
What will be an ideal response?
Insects prevent water loss and disturbance in the osmotic balance in cells by
a. having a water-proof cell wall around each cell. b. having a cuticle that makes the body water-proof. c. having an outer epidermis made of keratinized cells. d. having equal concentration of molecules in ECF and ICF.