Answer:
Explanation:
MEIOSIS:
- Each replicated chromosome pairs with its corresponding homologous chromosome
- Tetrads form and crossing over sometimes occur
- Paired homologous chromosome line up across the center of the cell.
- Four haploid daughter cells form that are not identical to the parent cell
MITOSIS:
- Homologous chromosomes do not pair
- One row of chromosomes line up at the center of the cell.
- The cell nucleus divides only once
- Two diploid daughter cells form that are identical to the parent cell.
hope this helped!
mark me brainliest :D
Answer:
false ig because animal cell is not complex(i am not sure)
When something needs to be transported against its concentration gradient, or a molecule is too big to simply diffuse through a membrane, active transport has to be used. So active transport requires energy (ATP).
Examples:
1. Antiport pumps: transport one substance in one direction while transporting another substance the other way. An example of this is the sodium-potassium pump.
2. Symport pumps - uses a substance that wants to move from an area of high concentration to low concentration and carries another substance against its concentration gradient. An example of this is the sodium-glucose transport protein
3. Endocytosis - large amounts of extra cellular fluid can be taken into a cell - needs ATP to bind proteins in the cell membrane and causes them to change their shape...which eventually causes the surrounding of the fluid to be brought in (a vesicle).
4.exocytosis - opposite of above
The answer is c.
the hypothesis that cells are formed spontaneously by free cell formation was proven wrong by scientists.
