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babunello [35]
3 years ago
12

Substances that are poisonous are

Biology
1 answer:
3241004551 [841]3 years ago
8 0
D. Toxic , the other options do not refer to something necessarily harmful to the human body or poisonous. Human hair is ignitable, acid in the stomach corrodes food through chemical reactions so toxic is the only option left.
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Describe how TWO processes of chemical weathering and ONE process of physical weathering may cause rocks to break up.
Dmitry_Shevchenko [17]
Physical Weathering would be nature related like the wind or rain. Chemical Weathering would be anything caused by a chemical reaction like acids or acidic rain. 
I think that should help. If not let me know!

6 0
4 years ago
Which viral replication cycle is represented in part A of this diagram?
Burka [1]

Answer:

The correct answer is - option D. lytic cycle.

Explanation:

The lytic cycle is one of the two viral reproduction cycle. Generally, it is the major reproduction cycle. In this cycle reproduction of the viruses takes place inside the host cell and produce more viruses. In the production of the more viruses the host cell and it''s destruction takes place in the end. The 5 steps that takes place are as follows:

1- attachment - viruses attach to the cell.

2-penetration- only nucleic acid or genetic material is injected into the host cell through the hole made by the tail fibers and enzymes.

3- synthesis - replication of viral nucleic acid and protein and envelope.

4- assembly - assembling of the new viruses formed.

5- release.

Thus, the correct answer is - option D.

5 0
3 years ago
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yanalaym [24]

Answer:

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Explanation:

A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.

Proteins on the surface of vesicles determine where the vesicles go.

The nucleus is the cell organelle which provides the instructions for these proteins. It controls all the activities taking place in the cell and the synthesis of proteins.

6 0
3 years ago
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omeli [17]

Answer:

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Explanation:

7 0
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