Portage Learning Micro Exam 1 Questions and Answers.

Portage Learning Micro Exam 1 Questions and Answers
Question 1
True/False. A virus is considered a microorganism.

Correct Answer
False. Viruses are not living and as such are not considered microorganisms. Viruses can, however, be classified as
microbes, a more general term that includes microorganisms and viruses.



Question 2
What is the smallest biological unit of life?
Correct Answer
cell



Question 3
At a generalized level, all cells are comprised of what?
Correct Answer
macromolecules: proteins, lipids, sugars, nucleic acids and carbohydrates




Page 1 of 7

, Question 4
How many different types of amino acids are available from which to make proteins?
Correct Answer
20



Question 5
Define an essential amino acid.
Correct Answer
An essential amino acid cannot be produced by the human body and as such must be take in from the environment
through alternative sources (i.e) food.



Question 6
What are the two major types of nucleic acids and their roles?
Correct Answer
DNA and RNA. DNA holds the genetic info, RNA deciphers the genetic info in DNA and turns it into protein synthesis




Page 2 of 7