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Dennis_Churaev [7]
3 years ago
13

What percentage of bacteria are nonpathogenic?

Biology
1 answer:
Anon25 [30]3 years ago
3 0

Explanation:

While only about 5% of bacterial species are pathogenic, it is assumed that about 70% and above are non-pathogenic.

Plz MARK AS BRAINLIEST

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2. Antigens can trigger an immune response. Explain if this is a specific or a nonspecific defense.
masya89 [10]

This is a specific response because in order to fight antigens, white blood cells, the most important cells of the immune system, must produce large, Y-shaped proteins known as antibodies to fight these invaders. This is a type of specific defense (as I have identified antibodies as specific defenses is the chart above).

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8 0
3 years ago
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Which of the following are likely to be affected by a magnet?​
viktelen [127]

Answer:

an access card as some may contain metallic properties

Explanation:

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3 years ago
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A plant cell is placed in distilled water, as shown in the figure. There is a net uptake of water by osmosis, causing the cell t
Korvikt [17]

Answer:

The water potentials (Ψ) of the cell and its surroundings are the same.

Explanation:

When a cell is kept in hypotonic surroundings such as distilled water, the osmotic movement of water occurs towards the cell. The entry of water makes the cell swell up and it becomes turgid. Water potential is determined by solute and pressure potentials mainly. Here, the solute potential of the cell and the distilled water was different resulting in differences in their respective water potential values which in turn served as a driving force for endosmosis.

When the cell is fully turgid, the solute concentration of the cell and the surrounding distilled water become equal to each other. Under these conditions, the water potential of the cell and distilled water are the same.

7 0
3 years ago
If the tube incubated at 100°C was placed back in the optimum temperature, would a reaction occur?
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The optimum temperature of salivary amylase ranges from 32°C to 37°C.<span>This applies to the human body since salivary amylase is suitable to function within these temperatures. After </span>37°C<span>, the graph then steeply declines as a result of loss of activity. At 50°C and 70°C, salivary amylase is denatured.</span>
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Help with the graph
TiliK225 [7]

if you had it in Spanish

8 0
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