Answer:
Explanation: In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers. A concentration gradient exists for these molecules, so they have the potential to diffuse into or out of, the cell by moving down it.
Answer:
The correct answer is internal and external signals regulate the progression of the cell cycle at various critical check points.
Explanation:
The cyclic event that helps to prepare the cell for division is termed as cell cycle.Cell cycle are regulated by various internal and external factors which regulates the passage of cell through various critical check point.
For example Maturation promoting factor helps in the progression of frog egg oocytes cells from G2 to M phase.
G1 cyclin CDK helps in the passage of cell from G1 to S phase.
Answer:
The answer is C (Cytosol)
Explanation:
Cytosol is the jelly-like fluid that fills the space between cell organelles. It also plays a role in keeping the cell's structure.
Answer;
61
Explanation;
-The value 61 signifies that 61% of the 617 nucleotide positions are the same in both species, this about the comparable rRNA gene sequences in Comamonas testosteroni and Escherichia coli.
-Some cells have a dash rather than a value because those cells would compare one species to itself. Other shaded grey with no value because these cells would duplicate comparisons shown elsewhere in the matrix.
