During a race such as a marathon, the skeletal muscle cells in your legs use a lot of energy to continually contract and power your muscles. What organelle is most likely abundant in skeletal muscle cells?
A) mitochondria
B) Golgi apparatus
C) smooth endoplasmic reticulum
D) rough endoplasmic reticulum
A
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Which of the following cells are alive at
maturity? a. sieve tube members b. vessel members c. tracheids d. vessel members and tracheids e. sieve tube members and vessel members
Some invertebrates do not have special respiratory
organs and rely on __________ exchange, diffusion of gases across the body surface. Fill in the blank(s) with the appropriate word(s).
The developmental fate of a cell is established by the process termed
A) development. B) differentiation. C) determination. D) specialization. E) A, B, and C only
Most of the carbon dioxide in the blood is transported:a
dissolved in plasma. b. as bicarbonate ions. c. by hemoglobin. d. as carbonic anhydrase. e. as carbonic acid.