LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

DIVERSITY AMONG LIFE FORMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the absence of other forces, materials will tend to move from an area of ____ concentration to an area of ____ concentration.
A
lower, higher
B
higher, lower
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -In the process of diffusion, a substance tends to move from an area of high concentration to an area of low concentration until its concentration becomes equal throughout a space.

Detailed explanation-2: -Osmosis. The net movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. Tonicity. The ability of an extracellular solution to make water move into or out of a cell by osmosis.

Detailed explanation-3: -Active transport is the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by proteins and requiring energy.

Detailed explanation-4: -In passive transport, substances simply move from an area of higher concentration to an area of lower concentration, which does not require the input of energy. Concentration gradient, size of the particles that are diffusing, and temperature of the system affect the rate of diffusion.

There is 1 question to complete.