If the membrane of a cell were no longer selectively permeable then "<span>The cell would die as it would not be able to regulate which substances could enter and leave", since a selectively permeable membrane allows both things to enter and leave for the cell's survival. </span>
A particle that releases light- respond if you want a more detailed explination
Answer:
<em><u>Osmosis and facilitated diffusion</u></em> are two forms of passive transport that are integral to cellular transport mechanisms.
Explanation:
Cells surrounded by a bilipid layer or plasma membrane are amphiphilic, with their polar, hydrophilic lipid heads facing outward, while their hydrophobic non-polar lipid tails facing each other inward.
Although lipid-soluble molecules travel quickly through the bilayer, traveling across its surface into the cell is often difficult for charged and large molecules. Thus, transport proteins, pores and gated channels, transmembrane channels, embedded within the membrane, help to preserve selective permeability.
Across plasma membranes as a form of passive transport in cells, substances move via:
- osmosis - water molecules readily pass through the membrane; the molecules move from high concentration regions to low concentration regions at will through the membrane- they move down their concentration gradient
- facilitated diffusion - channel proteins allow charged ions to move across the membrane. Sodium ions are able to pass freely through specialized sodium channel pores into some cells. These channels always remain open- the ions move down their concentration gradient.
Answer: Collagen is the most abundant protein in the body. Its fiber-like structure is used to make connective tissue. Like the name implies, this type of tissue connects other tissues and is a major component of bone, skin, muscles, tendons, and cartilage
Explanation:
d. The farther an electron is from the nucleus, the greater its energy.
Explanation:
The energy of an electron relates with the distance from the nucleus in that the farther an electron is from the nucleus, the greater its energy.
The nucleus of an atom is where the protons and neutrons are located.
Electrons orbits round the nucleus in certain permissible energy levels.
- According to quantum mechanics and the Bohr's model of the atom, the energy levels of orbital electron is quantized.
- The ground state is the state with the lowest energy and close to the nucleus.
- The outer most electrons are located in the highest energy levels
- Therefore, the farther an electrons is from the nucleus, the greater its energy
learn more:
Bohr's model of the atom brainly.com/question/2965079
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