LATEST Attempt 1 46 minutes 86.33 out of 100
Score for this quiz: 86.33 out of 100
Submitted Mar 27 at 2:28am
This attempt took 46 minutes.
Question 1
pts
True/False. A virus is considered a microorganism.
You Answered
True
Correct Answer
False
Question 2
pts
What is the smallest biological unit of life?
Your Answer:
a cell
A cell
Question 3
pts
At a generalized level, all cells are comprised of what?
Your Answer:
macromolecules like lipids, carbohydrates, proteins and nucleic acids
Macromolecules*
*A student may also answer: Proteins, Lipids, Nucleic acids and Carbohydrates,
but they must answer with all four to be fully correct.
Question 4
, pts
Proteins are formed from various combinations of [answer1] of which there are
[answer2] known forms.
Your Answer:
various combination of aminoacids of which there are 20 known forms
1. Amino acids
2. 20
Question 5
pts
How many amino acids are classified as being essential amino acids?
Your Answer:
9 aminoacids
9
Question 6
pts
Where can the two major types of nucleic acids be found in the cell, and what are their
roles?
Your Answer:
DNA (deoxyribonucleic acid): contains large amount of heredity information
RNA(ribonucleic acid): responsible for deciphering heredity information in DNA and use
it to synthsize proteins
While both DNA and RNA can be found in the nucleus (center of the cell), only
RNA is capable of leaving the nucleus. DNA contains a vast amount of hereditary
information and is responsible for the inheritable characteristics of living
organisms. RNA is responsible for deciphering the hereditary information in DNA
and using it to synthesize proteins.
Question 7
pts
Complete the following RNA strand, and indicate how many bonds are formed for each
complementary pair:
,3’ GGUCAUCG 5’
5’ CC AGC 3’
Your Answer:
AGU
2 bonds
3’ GGUCAUCG 5’
5’ CCAGUAGC 3’
There are 2 bonds formed between A and U, and 3 bonds between G and C.
Question 8
pts
The plasma membrane (select all that are true):
Only restricts movement of materials into the cell
Correct!
Is often a bilayer comprised of lipids
Cannot prevent essential nutrients from escaping
Correct!
Contains hydrophobic tails pointing inward
Question 9
pts
How many carbon atoms are present in glucose?
1
3
, Correct!
6
The molecular formula of Glucose is C6H12O6
12
Question 10
pts
True of False: Eukaryotic cells do not have a nucleus.
True
Correct!
False
Eukaryotic cells do have a nucleus (prokaryotic cells do not).
Question 11
pts
True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea.
Correct!
True
False
Question 12
pts
True or False: Archaea is noted for its ability to survive under harsh conditions.
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