QUESTION 1
Ion diffusion across plasma membrane needs
a concentration gradient across the membrane
specific transporters
ATP
provide extra energy for the transport
2 points
QUESTION 2
There are four types of large biological molecules
2 points
QUESTION 3
Active transporters transport substances across cell membrane against ____________
2 points
QUESTION 4
Which of the following is a nonpolar amino acid?
1. Valine
2. Serine
3. Aspartic acid
4. Glutamic acid
2 points
QUESTION 5
Membrane potential of a cell is created by:
1. sodium ion concentration difference between inside and outside of the cell
2. a difference in protein concentration across the cell membrane
3. an electrical potential difference between the intracellular fluid and the surrounding extracellular fluid
4. a difference between the potassium concentration inside and outside of the cell
2 points
QUESTION 6
A mutation resulted in a change from a valine to a glutamic acid in a peptide sequence. This mutation will NOT change the protein folding
True
False
2 points
QUESTION 7
Ions can be transported across plasma membrane by
1. diffusion
2. No need of transporters
3. osmosis
4. active transport
2 points
QUESTION 8
Phospholipid is composed of
1. A glycerol backbone
2. One protein group
3. One carbohydrate group
4. Two fatty acid chains and one phosphate group
2 points
QUESTION 9
Prokaryotic cells and eukaryotic cells are similar in
1. Plasma membrane
2. nucleus
3. mechanism for protein translation
4. endoplasmic reticulum
2 points
QUESTION 10
Disulfide bonds are formed between two histidine residues
True
False
QUESTION 1
Ion diffusion across plasma membrane needs
a concentration gradient across the membrane | ||
specific transporters | ||
ATP | ||
provide extra energy for the transport |
2 points
QUESTION 2
There are four types of large biological molecules
2 points
QUESTION 3
Active transporters transport substances across cell membrane against ____________
2 points
QUESTION 4
Which of the following is a nonpolar amino acid?
1. | Valine | |
2. | Serine | |
3. | Aspartic acid | |
4. | Glutamic acid |
2 points
QUESTION 5
Membrane potential of a cell is created by:
1. | sodium ion concentration difference between inside and outside of the cell | |
2. | a difference in protein concentration across the cell membrane | |
3. | an electrical potential difference between the intracellular fluid and the surrounding extracellular fluid | |
4. | a difference between the potassium concentration inside and outside of the cell |
2 points
QUESTION 6
A mutation resulted in a change from a valine to a glutamic acid in a peptide sequence. This mutation will NOT change the protein folding
True
False
2 points
QUESTION 7
Ions can be transported across plasma membrane by
1. | diffusion | |
2. | No need of transporters | |
3. | osmosis | |
4. | active transport |
2 points
QUESTION 8
Phospholipid is composed of
1. | A glycerol backbone | |
2. | One protein group | |
3. | One carbohydrate group | |
4. | Two fatty acid chains and one phosphate group |
2 points
QUESTION 9
Prokaryotic cells and eukaryotic cells are similar in
1. | Plasma membrane | |
2. | nucleus | |
3. | mechanism for protein translation | |
4. | endoplasmic reticulum |
2 points
QUESTION 10
Disulfide bonds are formed between two histidine residues
True
False