Answer:
Nervous system: This systems helps the five sense organs (eyes, ears, nose, tongue, skin) which all contain nerves that send messages to the brain about what is happening. The brain produces a response which it sends via other nerves to the muscles.
Digestive system: This system helps to break down food into simpler substances so it can be used and absorbed into the body. It takes place in the alimentary canal (food tube), mainly in the stomach and small intestine. The digested food is absorbed into the blood.
Respiratory System: This system helps take in oxygen and removing waste carbon dioxide. Air enters the lungs by movement of the rib muscles and diaphragm. The oxygen is absorbed into the blood.
Reproductive system: This helps produce offspring. Eggs are produces by ovaries in a female and the sperm is produced in the testes of a male. They then try and fertilise the eggs.
Note:
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Answer:
The regulation of the cell cycle helps in wound healing as well as replacing the lost cells by division. Thus, options B and C are correct.
Explanation:
The cell cycle can be described as the process of division and reproduction. The events result in the formation of multiple cells that have been able to deal with the repair mechanism of the body.
With the regulation of the cell cycle, the division process of the cell has been initiated and helps in the formation of multiple cells. The formed daughter cells have been able to heal the wounds effectively by accumulating and removing the dead cell.
The cell cycle has also been responsible for the replacement of lost cells, with the formation of new cells. Thus, options B and C are correct.
Answer:
B) the anticodon of tRNA charged with methionine binds to mRNA associated with the small ribosomal subunit.
Explanation:
Translation:
Translation is the process occurring within living organism by which message from mRNA is translated into protein.
Eukaryotic translation consists of four phases: initiation, elongation, termination, and recycling
Here in this question discussion on Initiation is needed.
Translation initiation
Translation initiation in eukaryotes initiates when eukaryotic initiation factors (eIFs) assembles tRNA, 40S, and 60S ribosomal subunits at the initiation codon of mRNA into an 80S ribosome .
These eukaryotic initiation factors (eIFs) holds the mRNA in place and bind the 40S ribosomal subunit.
Correct Answer:
The tRNA anticodon charged with amino acid methionine binds to start codon AUG of mRNA associated with the small ribosomal subunit.
