BIO 171 Module Exams 1-6 PORTAGE LEARNING

BIO 171 Module Exams 1-6 PORTAGE LEARNING/BIO 171 Module Exams 1-6 PORTAGE LEARNING/BIO 171 Module Exams 1-6 PORTAGE LEARNING/BIO 171 Module Exams 1-6 PORT AGE LEARNING/BIO 171 Module Exams 1-6 PORTAGE LEARNINPortage Learning BIOD 171 Microbiology

Lecture Exam Key 1-6 ALL ANSWERS

100% CORRECT SOLUTION AID

GRADE A+

1. What are the two major types of nucleic acids and their roles?

DNA- deoxyribonucleic acid

RNA- Ribonucleic acid

DNA- Cellular life has DNA and a role that DNA has is long-term storage of information, it holds the characteristics of living

organisms.

RNA- Is the carrier of information in form of amino acid sequence. It converts the information in the DNA and synthesizes

proteins

1. True or False: A virus is considered a microorganism.

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.

2. What is the smallest biological unit of life?

A cell.

3. At a generalized level, all cells are comprised of what?

Macromolecules*

*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they must answer with all four

to be fully correct.

1. How many different types of amino acids are available from which to make proteins?

20

2. Define an essential amino acid.

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.

Portage Learning BIOD 171 Microbiology

Lecture Exam Key 1-6 ALL ANSWERS

100% CORRECT SOLUTION AID

GRADE A+

1. The plasma membrane (select all that are true):

A. Restricts movement of materials in and out of the cell

B. Is often a triple layer comprised of lipids

C. Prevents essential nutrients from escaping

D. Contains hydrophobic tails pointing outward

A and C

2. How many carbon atoms are present in the monosaccharide glucose?

A. 1

B. 3

C. 6

D. 12

C. The molecular formula of Glucose is C6H12O6

1. Complete the following DNA strand and indicate how many bonds are formed for each complementary pair:

3’ GGTCATCG 5’

5’ CC AGC 3’

3’ GGTCATCG 5’

5’ CCAGTAGC 3’

There are 2 bonds formed between A and T, and 3 bonds between G and C.

Portage Learning BIOD 171 Microbiology

Lecture Exam Key 1-6 ALL ANSWERS

100% CORRECT SOLUTION AID

GRADE A+

True of False: The genetic material within a prokaryotic cell is contained within a membrane-enclosed region.

False. Only eukaryotic cells contain its genetic material within a nucleus

True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea.

True

Portage Learning BIOD 171 Microbiology

Lecture Exam Key 1-6 ALL ANSWERS

100% CORRECT SOLUTION AID

GRADE A+

True or False: Archaea is noted for its ability to survive under harsh conditions.

True. Archaea can often be found in harsh conditions such as high salt levels, high acid conditions, high

temperatures and even oxygen-poor conditions.

1. Which of the following microorganisms are considered to be Eukarya? Select all that apply.

A. Animalia

B. Plantae

C. Fungi

D. Protista

A,B,C,D

2. True of False: All multicellular microorganisms classified as Animalia are heterotrophic.

True

3. Microorganisms classified as Plantae obtain most of their energy by converting energy into energy.

Light (sunlight); chemical (sugars)

1. A defining characteristic of fungi is the presence of chitin in the cell walls. Which of following also contain chitin? Select all

that apply.

A. Mushrooms

B. Bacteria

C. Yeast

D. Molds

A, C and D all contain chitin.

Describe the 4 basic bacterial morphologies.

Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum (spiral/corkscrew).

Portage Learning BIOD 171 Microbiology

Lecture Exam Key 1-6 ALL ANSWERS

100% CORRECT SOLUTION AID

GRADE A+

2. True or False: A defining characteristic of Protista is the inability of colonies to form tissue layers.

True