Match the following items with the correct phrases.

_______1. ____________________ are the “building blocks” of proteins.
_______2. ____________________ consist of a nitrogenous base, a pentose, and a phosphate group.
_______3. ____________________ are the “building blocks” of polysaccharides.
_______4. Sucrose, lactose, and maltose are examples of ____________________.
_______5. Fructose, galactose, and glucose are examples of ____________________.


a. amino acids
b. disaccharides
c. fatty acids
d. monosaccharides
e. nucleotides


1. a. amino acids
2. e. nucleotides
3. d. monosaccharides
4. b. disaccharides
5. d. monosaccharides

Biology & Microbiology

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Scientists now believe that comets falling to early Earth played a role in the evolution of life. What role did these comets play?

A) They brought CO2 and H2O. B) They brought ammonia ions (NH4). C) They generated a lot of energy when they hit Earth. D) All of the above are true.

Biology & Microbiology

What is thought to be true about the three domains of living things?

a. they diverged from a common ancestor fairly recently b. they diverged from a common ancestor before the evolution of the main groups of eukaryotes c. they did not have a common ancestor d. Domains Bacteria and Archcaea evolved after the main groups of eukaryotes

Biology & Microbiology

An infection of the thin layer of tissue around the inner cavities of the heart itself would affect the ________

A) sinoatrial node B) myocardium C) endocardium D) pericardium

Biology & Microbiology

The mitochondrial proteins found in the inner membrane are involved in the conversion of ADP to ATP, a source of energy for the cell. This process consumes which of the following substances?

(a) oxygen (b) nitrogen (c) sulfur (d) carbon dioxide

Biology & Microbiology