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:
Motor proteins <em>propel themselves along the cytoskeleton</em> using a mechanochemical cycle of filament binding, conformational change, filament release, conformation reversal, and filament rebinding.
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False. Mendelian genetics were based on the simple garden pea, on a plant with only 7 pair of contrasting traits. They don't take into account polygenic traits.
Answer:
the cell membrane is selectively permeable
Explanation:
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The correct match is
Atom: A) the basic unit of an element.
Atom is the smallest and structural unit of any element.
Particle: D) a tiny fragment or piece of matter.
A particle can be defined as a minute or small piece, fragment or portion of any matter. It may be used to access many physical and chemical properties such as density, volume, mass etc.
Phase: C) unique form of matter in which it can exist.
Phase can be defined as a particular state in which any matter can exists. Generally, matter can exists in three phases namely; solid, liquid, and gas. Plasma is the fourth phase which exists at very high temperature and pressure.
Scientific theory: B) an explanation for some naturally occurring event.
Scientific theory can be explained as a group of postulations or hypothesis formulated in order to explain naturally occurring phenomenon or event. These hypothesis are repeatedly confirmed with the help of experiments or observations.
