The most abundance compound in most living things is

a) carbon dioxide
b) water
c) sodium chloride
d) sugar


Answer: b) water

Biology & Microbiology

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Refer to the figure above. What is the function of the ACC sequence at the end?

A) It attaches to an amino acid. B) It base pairs with the codon of mRNA. C) It stabilizes the tRNA-amino acid complex. D) It is the active site of this ribozyme.

Biology & Microbiology

Turner’s syndrome individuals have how many chromosomes?

a. 23 b. 24 c. 45 d. 46 e. 47

Biology & Microbiology

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

Biology & Microbiology

The source of energy for nearly all ecosystems is 

A. the sun. B. food. C. oxygen. D. water.

Biology & Microbiology