Exam (elaborations)
Portage Microbiology Lecture Exam 1
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Portage Microbiology Lecture Exam 1
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Portage Microbiology Lecture Exam 1-SolvedA 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 - ANS-A, C, D
At a generalized level, all cells are comprised of what? - ANS-Macromolecules
Cell walls are found in which of the following (select all that apply):
- Plants
- Fungi
- Bacteria
- Mammalian cells
- Algae - ANS-Plants, Fungi, Bacteria, Algae
Complete the following DNA strand, and indicate how many bonds are formed for each
complementary pair:
3' GGTCATCG 5'5' CC AGC 3' - ANS-5' CCAGTAGC 3'
There are two hydrogen bonds between thymine and adenine.There are three hydrogen
bonds between cytosine and guanine.
In the strand above, there are eight complementary pairs.
Describe the 4 basic bacterial morphologies. - ANS-1. Coccus: bacteria is round or
spherical
2. Bacillus: bacteria is a rod shape
3. Vibrio: bacteria is a curved rod shape
4. Spirillum: bacteria is in a spiral or corkscrew shape
How many amino acids are classified as being essential amino acids? - ANS-9
How many carbon atoms are present in the polysaccharide glucose?
A. 1
B. 3
C. 6
D. 12 - ANS-C
Identify the following cellular components by matching the number with the description.
A. Cell wall
B. Lysosome
C. Centriole
D. Rough endoplasmic reticulum
E. Plasma membrane
F. Nucleus
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