BIO 171 Micro Exam 1
(A GUARANTEED) <100% CORRECT> GRADED A+ | LATEST SOLUTIONS |
Question 1
3 / 3 pts
True/False. A virus is classified as a
... [Show More] microbe.
True
Although viruses are not living and as such are not considered microorganisms, they can,
however, be classified as microbes, a more general term that includes microorganisms and
viruses.
Step-by-Step explanation
The word "microbe" is a broad term that would describe any microorganism that is microscopic in
size. It is not limited to only unicellular organisms, as some multicellular organisms are also
microscopic. The term would include bacteria, fungi, protozoa, archaea, algae, and
parasites. Viruses are nonliving particles of genetic material enclosed in a protein or lipid shell.
However, when they enter into a host cell, they are able to replicate, making the definition of
"nonliving" a little blurry. Although the consensus is not clear, some scientists also consider viruses
as microbes. Because of this, the word microbe may encompass all microorganisms and viruses.
References:
Defining Microbes. (n.d.) LibreTexts.
https://bio.libretexts.org/Bookshelves/Microbiology/Book%3A_Microbiology_(Boundless)/1%3A_Intro
duction_to_Microbiology/1.1%3A_Introduction_to_Microbiology/1.1A%3A_Defining_Microbes
Wagner, R. R. and Krug, . Robert M. (2020, November 12). virus. Encyclopedia Britannica.
https://www.britannica.com/science/virus
Question 2
3 / 3 pts
True or False: The smallest biological unit of life is the molecule.
False
The smallest biological unit of life is the cell.
Question 3
4 / 4 pts
What are the four main types of macromolecules found in cells?
Proteins, Lipids, Nucleic acids and Polysaccharides
Question 4
3 / 3 pts
Proteins are formed from various combinations of [answer1] of which there are [answer2] known
forms.
1. Amino acids
2. 20
Step-by-Step explanation
Proteins are formed from various combinations of AMINO ACIDS of which there are L- amino acids
and D- amino acids are known forms.
Question 5
4 / 4 pts
How many amino acids are classified as being essential amino acids?
9
Question 6
10 / 10 pts
What are the two major types of nucleic acids and their roles?
There are two major types of nucleic acids: DNA (deoxyribonucleic acid) and RNA
(ribonucleic acid). Nucleic acids are chemical molecules that carry genetic information
within the cell. 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
10 / 10 pts
Complete the following RNA strand, and indicate how many bonds are formed for each
complementary pair: [Show Less]