Examples of long-day plants are:a
poinsettia.
b. florist's chrysanthemum.
c. spinach.
d. black-eyed Susan.
e. both spinach and black-eyed Susans.
E
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Which of the following stains is/are considered differential?
A. Capsule stain. B. Flagella stain. C. Acid-fast stain. D. Gram stain. E. Acid-fast stain AND Gram stain.
Answer the following statements true (T) or false (F)
1. The smallest scale of biological organization is represented organelles. 2. Decomposers are a special group of producers. 3. In an experiment designed to determine if a fertilizer increased crop yield in tomato plants, the number of tomatoes produced by each plant would be the independent variable. 4. In an experiment designed to determine if a fertilizer increased crop yield in tomato plants, the number of tomatoes produced by each plant would be the dependent variable. 5. In an experiment designed to determine if a fertilizer increased crop yield in tomato plants, the amount of sunlight and water the plants received would be standardized variables.
In the 1920s, Otto Loewi discovered that
a. a frog heart would beat outside the animal. b. the nerve to a frog’s heart released a chemical that affected only that heart. c. neuron endings release a neurotransmitter when stimulated. d. a saline solution caused an isolated frog heart deprived of its own nerve supply to beat more slowly. e. ACh acts on skeletal muscle, smooth muscle, the heart, some glands, and the brain.
Which stage of cellular respiration requires oxygen that you breathe?
A) Glycolysis B) Citric acid cycle C) Electron transport chain D) All of the above