What element is considered an essential macronutrient for plants?
a. gold
b. manganese
c. chromium
d. nitrogen
e. copper
ANSWER: d
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Many genes are expressed when embryonic stem cells differentiate into muscle. This population of RNAs present in these cells would be called the ______________
Fill in the blanks with correct word
Consider a living plant cell in a living leaf that has higher water potential than the fluids surrounding the cell. What would happen to the water?
a. There would be no net flow of water into or out of the cell. b. There would be a gain of water by the cell only if the cell's pressure potential is low enough. c. There would be a net flow of water out of the cell. d. There would be a gain of water by the cell only if the cell's pressure potential is high enough.
In which organ are T-lymphocytes finally matured?
A. Lymph nodes B. Bone marrow C. Spleen D. Thymus E. Tonsils
Small effector molecules directly bind the DNA they regulate.
Answer the following statement true (T) or false (F)