BIO 152 EXAM 3: Clicker UPDATED
Exam Questions and CORRECT Answers
What is true about the various tetramers shown?
1. They bind to different enhancer sequences.
2. The DNA binding domains of the transcription factors must be different
3. They must get expressed in different cells in the apical meristem. - CORRECT
ANSWER - 1-3
non- vascular land plants have been entirely displaced by vascular plants. Yes or no? -
CORRECT ANSWER - no (example: moss)
Plants probably evolved vasculature before moving on to land? yes or no? - CORRECT
ANSWER - no
The mesophyll cells in the leaf photosynthesize. They transduce light energy into the production
of sugars. What raw materials do they need to do this?
1. Oxygen
2. Carbon dioxide
3. Water
4. Carbohydrates - CORRECT ANSWER - 2, 3 (CO2 and Water)
The cells in the middle of the leaf need carbon dioxide and water. How does the carbon dioxide
get in? - CORRECT ANSWER - It comes in through the stomates
You can make protoplasts with guard cells. It is known to "open" and "close" a stomate using
light or hormones. The changes are very quick. What could leas to the rapis change shown here?
(closed to open) - CORRECT ANSWER - Influx of water
, Which state is an open stomata? One guard cell small, one large - CORRECT ANSWER -
The large guard cells
In this case the membrane is not permeable to the solute the holes are too small. What would
happen in this situation? (more solute on the left) - CORRECT ANSWER - The water
would move from right to left
So how can the plant cause the stomate to open?
1. Pump solutes into the cytosol
2. Pump solutes out of the cytosol
3. Increase the internal sugar concentration
4. Decrease the internal sugar concentration - CORRECT ANSWER - 1,3
When should stomates be open?
Think about their role in photosynthesis.
1. Day
2. Night
3. Winter
4. Summer - CORRECT ANSWER - 1. Day
What kind of differences might you see in a desert plant vs. a rainforest plant with respect to
stomata?
1. Stomates open in night (desert) instead of day
2. Stomates never open in desert plants or no stomates
3. Stomates on under side of leaves dessert plant - CORRECT ANSWER - 1,3
Exam Questions and CORRECT Answers
What is true about the various tetramers shown?
1. They bind to different enhancer sequences.
2. The DNA binding domains of the transcription factors must be different
3. They must get expressed in different cells in the apical meristem. - CORRECT
ANSWER - 1-3
non- vascular land plants have been entirely displaced by vascular plants. Yes or no? -
CORRECT ANSWER - no (example: moss)
Plants probably evolved vasculature before moving on to land? yes or no? - CORRECT
ANSWER - no
The mesophyll cells in the leaf photosynthesize. They transduce light energy into the production
of sugars. What raw materials do they need to do this?
1. Oxygen
2. Carbon dioxide
3. Water
4. Carbohydrates - CORRECT ANSWER - 2, 3 (CO2 and Water)
The cells in the middle of the leaf need carbon dioxide and water. How does the carbon dioxide
get in? - CORRECT ANSWER - It comes in through the stomates
You can make protoplasts with guard cells. It is known to "open" and "close" a stomate using
light or hormones. The changes are very quick. What could leas to the rapis change shown here?
(closed to open) - CORRECT ANSWER - Influx of water
, Which state is an open stomata? One guard cell small, one large - CORRECT ANSWER -
The large guard cells
In this case the membrane is not permeable to the solute the holes are too small. What would
happen in this situation? (more solute on the left) - CORRECT ANSWER - The water
would move from right to left
So how can the plant cause the stomate to open?
1. Pump solutes into the cytosol
2. Pump solutes out of the cytosol
3. Increase the internal sugar concentration
4. Decrease the internal sugar concentration - CORRECT ANSWER - 1,3
When should stomates be open?
Think about their role in photosynthesis.
1. Day
2. Night
3. Winter
4. Summer - CORRECT ANSWER - 1. Day
What kind of differences might you see in a desert plant vs. a rainforest plant with respect to
stomata?
1. Stomates open in night (desert) instead of day
2. Stomates never open in desert plants or no stomates
3. Stomates on under side of leaves dessert plant - CORRECT ANSWER - 1,3
