The major difference between prokaryotes and eukaryotes is the presence or absence of membrane-bound organelles.
<h3>What are eukaryotic and prokaryotic cells?</h3>
Eukaryotic cells are cells that possess a membrane-bound nucleus and organelles while prokaryotic cells do not contain a membrane-bound nucleus or organelles.
Examples of eukaryotic cells are;
- Plant cells
- Animal cells
- Protist cells
Examples of prokaryotic cells are;
The membrane bound organelles that differentiates prokaryotes from eukaryotes are as follows:
- Chloroplast
- Mitochondria
- Endoplasmic reticulum
- Nucleus
Therefore, the major difference between prokaryotes and eukaryotes is the presence or absence of membrane-bound organelles.
Learn more about eukaryotic and prokaryotic cells at: brainly.com/question/4644590
Stimulus is something that causes a reaction, especially interest, excitement or energy. An example of stimulus is a shiny object for a baby. Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.
Answer:
The correct answer is- transcription regulation
Explanation:
Transcription regulation is a process by which a cell controls the conversion of DNA into protein-coding mRNA. Transcription regulation is important to conserve energy by making active proteins only when they are needed. It occurs both in prokaryotes and eukaryotes.
In prokaryotes, operons are found which have operator region that regulates the transcription of mRNA transcript having structural genes. Binding of repressor protein on operator inhibits the initiation of transcription.
In eukaryotes, RNA polymerase requires transcription factors and several proteins to function therefore these factors regulate gene transcription in eukaryotes. So the right answer is transcription regulation.
The answer is false, liquid molecules continue to move even after the concentration is uniform.
Diffusion happens because there’s a concentration gradient between the dye and the water, therefore dye molecules moves to the water area. But note that this is only the net movement of the molecules, which means, even if more molecules are moving towards water, there are still some dye molecules that are moving in the opposite direction.
So, after the concentration is equal, the motion of the dye molecules does not stop, they still move in random directions, but there’s no net movement instead, as there’s no concentration gradient. Remember molecules are always moving in all directions , it just depends on whether there’s a net movement or not. If there’s no net movement, the amount of molecules moving to each and every direction is always equal.
We all know that plants need water, but water in excess is as bad as not having water.
→ Dry rural areas struggle to get water, and that is why most of the things they plant are native plants (resistant to dry climates).
→ Rural areas with heavy rainfalls struggle in finding ways of protecting they're crops against the damage the rain can cause and the excess water.
Hope it helped,
BioTeacher101