Answer:
this may help!
Explanation:
The global climate is the connected system of sun, earth and oceans, wind, rain and snow, forests, deserts and savannas, and everything people do, too. The climate of a place, say New York, can be described as its rainfall, changing temperatures during the year and so on.
Answer:
B is INCORRECT
Explanation:
Action potential in contractile cells can be divided into 3 phases
1. Rapid depolarization; caused by fast influx of sodium ions into the cells. Last a few milliseconds.
2. Plateau phase: This is a sustained positive membrane potential, after rapid depolarization, caused by a balance between calcium ion influx and slow potassium ion efflux.
3. Rapid repolarization: Eventually there's a closure of all other ion channels except the potassium ion channels causing rapid efflux of potassium ions, returning the membrane potential back to negative.
A refractory period usually occurs after undergoing an action potential. During this time no action potential can occur.
Nucleous plays a significant role in transmission of genetic traits. The nucleus stores the cell's hereditary material, or DNA,
Explanation:
- The nucleus houses the genetic material of the cell: DNA.
- DNA is normally found as a loosely contained structure called chromatin within the nucleus
- The nucleus is also home to histone proteins.
- When a cell is about to divide, the chromatin coils tightly and condenses to form chromosomes
- The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
- The material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
- The DNA in the cell nucleus makes up the genetic material of all living organisms.
- Hereditary characteristics, or traits, are encoded in nucleotide sequences hundreds of base pairs long.
