What are the macronutrients present in most commercial fertilizers?
A) C, H, and N
B) N, P, and K
C) C, N, and P
D) N, C, and K
Answer: B
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Carotenoids are important to many plants because these pigments are able to
A. remove carbon dioxide from the air. B. absorb wavelengths of light that neither chlorophyll a nor b can absorb. C. absorb water so that hydrolysis can be carried out in the chloroplasts. D. capture UV radiation that is harmful to the DNA in the nucleus of plant cells. E. store electrons for use during the "dark" reaction of photosynthesis.
Hormones are typically involved in maintaining ____ , or a given steady state for a particular factor (like sugar or calcium levels in the blood)
Fill in the blank with the appropriate word.
__________ refers to processes designed to induce immunity. Fill in the blank(s) with the appropriate word(s)
Answer the following statement(s) true (T) or false (F)
1. bones use inactivity as a stimulus for bone growth 2. joints have less friction than ice 3. Osteoporosis is an inflammation of the bone tissue 4. bone is strongest when it is in tension 5. bone becomes stiffer when the rate of loading is high