VARIABLE
What will be an ideal response?
a part of an experiment that can vary or change
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One adaptation to flight in birds is lighter bones, which lack
A. collagen. B. medullary cavities. C. calcium. D. the periosteum. E. bone marrow.
Four of the five answers listed below are
characteristics of ethylene. Select the EXCEPTION.
a. a source is aging plant tissues b. promotes fruit ripening c. triggers cells division d. is a gas e. inhibits cell elongation
Refer to Figure 10-1. Which of the following combinations of letters accurately represents two
homologous chromatids?
a. A and B
b. A and C
c. A and D
d. B and F
e. D and E
Suppose a young boy is always tired and fatigued, suffering from a metabolic disease. Which of the following organelles is most likely involved in this disease?
A) lysosomes B) Golgi apparatus C) ribosomes D) mitochondria