Which of the following plant organelle is a colorless plastid that stores starch in roots?
A. thyloplasts
B. chloroplasts
C. chromoplasts
D. amyloplasts
E. both chloroplasts and chromoplasts
D. amyloplasts
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Which of the following is an intermediate in the reaction that forms Ala-tRNA?
A. Alanyl-ATP B. Alanyl-ADP C. Alanyl-PPi D. Alanyl-AMP
Which of the following macromolecules is insoluble in water?
A) lipids B) sugars C) amino acids D) disaccharides E) nucleic acids
In addition to several other factors, the overall risks of environmental chemicals depend on genetically determined
variations in the ____ involved in transport, metabolism, and excretion of these chemicals. a. proteins b. body’s oxygen levels c. body’s pH d. ribosomes e. disaccharides
The main weight-bearing bone in the lower extremities is known as the ________
A) fibula B) tibia C) pelvis D) femur