Answer: c. If you cut an onion near a person, then his/her eyes will always begin to produce tears
Explanation:
Answer:
These are the following answers to the items:
Pinocytosis -cell engulfs molecules in cell "drinking"
Facilitated diffusion- molecules helped by protein; move insoluble molecules
across plasma membrane
Passive diffusion- molecules move in and out freely from high to low concentration
Phagocytosis- cell engulfs microorganisms in cell "eating"
Active transport- molecules "pumped" in or out from low to high concentration
Passive diffusion- oxygen, carbon dioxide
Active transport- transports sodium, potassium
Pinocytosis- transports glucose, amino acids
Explanation:
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Answer:
The unsuspected intrinsic property of melanin to absorb the full electromagnetic spectrum, visible and invisible; dissipating absorbed energy in non-radiative manner through the dissociation of water molecule, like chlorophyll in plants; implies a new paradigm in cell biology, because signify that our body is able to
Explanation:
Answer: The human brain and other nerve tissues use mostly as fuel.
Answer:
A polar molecule simply means the charges are uneven throughout the molecule. Some parts are slightly negative (outside the oxygen), and some parts are slightly positive (outside the hydrogen atoms). A covalent bond happens when atoms share their electrons with each other. So, polar covalent just means that the atoms aren't sharing their electrons evenly, creating slight charges in the molecule. Water is polar covalent because the highly electronegative oxygen atom pulls electrons to it, making the region around the oxygen more negative than the areas around the two hydrogen atoms.
