41. C.DNA is made up of proteins, which tells a cell how to function
42. <span>C. So they can move materials from one area of the cell to another quickly
A DNA is made of proteins which was synthesized by ribosomes of the cell to produce protein and these proteins are churned into mRNA and then these mRNA and used to catalyse the DNA production. DNA of a cell in the nucleus is the programmed individuality that controls, manages and organises the entire cell to function and initiate cellular activities.
It is more efficient, thus, to move materials quickly.
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<u>Typical symptoms of TB include:</u>
- a persistent cough that lasts more than 3 weeks and usually brings up phlegm, which may be bloody.
- weight loss.
- night sweats.
- high temperature.
- tiredness and fatigue.
- loss of appetite.
- swellings in the neck.
Answer: salt
Freshwater is defined as having a low salt concentration, usually less than 1%.
Explanation:
Freshwater refers to the bodies of water that contain very low levels of dissolved salts. So, freshwater are unique for their low salt content (about 0.5% of salt) compared to the sea water with high salt content.
Examples of freshwater include rivers and spring