At room temperature and normal atmospheric pressure, covalent compounds may exist as a solid, a liquid, or a gas, whereas ionic compounds exist only as solids, Ionic compounds exist in stable crystalline structures. Therefore, they have higher melting and boiling points compared to covalent compounds.
Bacteria are unicellular microorganisms that can be found everywhere in the environment. Viruses are microorganisms that can only reproduce within the cells of a host organism.
The differences between viruses and bacteria include;
- Viruses do not have any cell and are considered between living and non-living things, while bacteria have one cell (Unicellular) and are living organisms.
- Viruses are smaller in size (20-400 nm) when compared with bacteria (1000 nm).
- Viruses do not have a cell wall but a protein coat is present, while bacteria have a cell wall that is composed of peptidoglycan.
- Viruses require a living cell to reproduce, while bacteria can reproduce by itself.
- The DNA or RNA of viruses is enclosed inside a coat of protein, while that of bacteria floats freely in the cytoplasm within the cell.
Answer:
b. active transport
Explanation:
Active transport -
It is the movement of the molecules across the membrane via a region of lower concentration towards the region of higher concentration , and in some cases , the flow is independent of the concentration .Its is known as active transport .
This process needs some amount of energy in the form of cellular energy .
Hence , the correct term for the given statement is active transport .
Answer: The process of peer-review starts with a scientist submitting his article to a peer-review journal. After that, the quality of the article is evaluated by the panel of the academic reviewers or referees in that field
Explanation:
3. <span>They bloom at night.
4. </span><span>hunting in packs
5. </span><span>sleeping
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