The difference in concentration between solutions on either side of a cell membrane is a concentration gradient.
In the field of biology, a concentration gradient can be described as a difference in the concentration of molecules inside and outside of a cell. It is due to concentration gradient that molecules move into and out of a cell through the cell membrane.
Some molecules move from an area of higher concentration gradient to an area of lower concentration along the concentration gradient. Diffusion is an example of such a process.
On the other hand, some molecules move from an area of lower concentration to an area of higher concentration against the concentration gradient. Active transport is an example of such a process.
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Answer:
C, bacterial cells dividing
Explanation:
because these are simple, one celled organism, they don't reproduce with male and female, instead they go through mitosis which is when a cell divides into two to reproduce. while A does include this, since skin belongs to a bigger organism it doesn't count as reproduction. B talks about development/growth, and D talks about something completely different to reproduction. hope it helped
I believe it’s A in the question
Answer:
Mitochondria
Explanation:
In the eukaryotic cells, some cell organelles and membranes together make a membrane system called the endomembrane system. This system includes the endoplasmic reticulum, Golgi apparatus, lysosomes and nuclear membrane. Members of this system works together. They modify, package, and transport lipids and proteins. The lysosomes formed from Golgi apparatus and contains hydrolytic enzymes. Mitochondria is the site for cellualr respiration and is not a part of the endomembrane system.
