A concentration gradient is the process of particles or solutes moving through a solution from areas of greater particle concentration to areas of low particle concentration.
The importance of a concentration gradient is that it is what makes osmosis and diffusion to happen. If there were no gradient, there would be no movement of anything from high to low concentrations. Because cells are either hypertonic or hypotonic, nutrients and materials are able to flow either in or out of the cell and life is sustained. If all cells were isotonic, then there would be no flow of nutrients and materials and cells would not survive.
Hi
Most found in the sunlit (euphotic) zone of the ocean
I hope that's help !
Autonomic nervous system—creates voluntary response to stimuli
Parasympathetic nervous system—controls body response to emergency
Sympathetic nervous system—brings body to homeostasis
I know that C and D are mixed up definitions. The sympathetic nervous system controls the response to emergency situations and the parasympathetic brings the body back to homeostasis.
I'm also pretty sure the autonomic nervous system controls involuntary responses, not voluntary.
Answer:
The correct answer would be Sensory somatic nervous system—controls skeletal muscles.
Somatic nervous system is a part of peripheral nervous system which controls the movement of skeletal muscles or voluntary movements.
It connects the skeletal system with central nervous system.
It comprises of two types of nerves:
The below flow chart would help you better in understanding the classification of nervous system.
Answer:
Mucociliary escalator- intestine
Explanation:
This is a complete mismatched. Simply because this defense mechanism maintains the respiratory tract by sweeping foreign substances inhaled with air molecules upwards in the trachea, to be swallowed or spit out .
It is composed of the Goblet cells and Ciliated Epithelium.It is a defence mechanism which protects the lungs parenchyma from infection and inflammation from foreign particles and microorganism. The mucus produced from the Goblet cells trapped theses particles,at the same time moistening the pathways, while the cilliated epithelium beat in upward fashion to sweep them out through the trachea. To complete mucociliary clearance.
B. A single-stranded RNA molecule forms.
C. The DNA transfers its information to RNA through an amino acid.
D. The DNA molecule unzips along weak hydrogen bonds.
DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. The option (D) is correct.
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
Moreover, DNA must replicate (copy) itself so that each resulting cell after mitosis and cell division has the same DNA as the parent cell. All these cells, the parent cell and the two new daughter cells, are genetically identical.
Therefore, DNA replication is the process of creating two identical daughter strands of DNA. DNA replication occurs in the nucleus in eukaryotic cells and in the nucleoid region in prokaryotic cells. DNA replication occurs in S phase during the cell cycle prior to cell division.
Learn more about DNA replication:
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Answer:
D
Explanation:
The first step in DNA replication is to 'unzip' the double helix structure of the DNA molecule. This is carried out by an enzyme, called helicase which breaks the hydrogen bonds? holding the complementary bases of DNA together
mutations
B.
spindle formation
C.
DNA replication
D.
cytokinesis