The same neurotransmitter may produce either excitatory or inhibitory effects on postsynaptic neurons depending on the specific receptor type it binds.
Answer the following statement true (T) or false (F)
True
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Which of the following is the main reason why pollen withstands decay much better than typical plant
parts?
a. hemicellulose b. sporopollenin c. lignin d. cellulose e. pectin
Which of the following best describes the photosynthetic membranes of Chlorobia?
A. Accessory bacteriochlorophylls are located in the chlorosomes but the reaction center bacteriochlorophyll is located in the plasma membrane. B. Accessory bacteriochlorophylls are located in the plasma membrane but the reaction center bacteriochlorophyll is located in the chlorosomes. C. Accessory and reaction center bacteriochlorophylls are located in the plasma membrane. D. Accessory and reaction center bacteriochlorophylls are located in the chlorosomes.
Chloroplasts are not
A. found in plants. B. organelles that carry out photosynthesis. C. found in some members of the kingdom Protista. D. responsible for cellular respiration. E. glucose synthesizers.
A farmer is concerned that if she plants seeds for her next harvest, many of them will remain dormant and fail to grow. Depending on the plant, what steps can the farmer take to ensure that many of her seeds will germinate?
A. She can treat her seeds with red light prior to planting. B. She can put her seeds in the refrigerator for a few months before planting. C. She can rub her seeds with sand paper prior to planting. D. She can feed the seeds to her cows and collect them after they have passed through the animals' digestive tracts.