Answer:
They are arranged in two layers called a phospholipid bilayer; with a hydrophobic, interior and a hydrophilic, exterior.
My opinion is C. Sorry if this doesn't help you.
The answer is D.
Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It tells the brain and the rest of the body about the time of wake and sleep. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. The melatonin secretion into the blood is regulated by the endocrine system, by the hypothalamus which on gets stimulated by the light.
It is the variable being controlled/changed to see if there are any effects on the dependent variable (the thing getting tested/measured)
Photosynthesis is a series of metabolic reactions by which plants synthesize biomolecules by using sunlight. During this process, plants use simple molecules (H2O, CO2) to create oxygen and chemical energy.
- During photosynthesis, chemical energy is stored in the chemical bonds of simple carbohydrates (e.g., glucose).
- The statement above IS NOT TRUE because plants need to sequester nitrogen from the soil to build amino acids.
- Carbohydrates are biomolecules consisting of Hydrogen, Carbon, and Oxygen.
- Plants require Nitrogen, Phosphorous and Sulfur from the soil in order to to create different biomolecules such as proteins (whose building blocks are amino acids) and nucleic acids.
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