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Levart [38]
3 years ago
6

which of these is NOT true of cells?a. they are much like empty rooms.b. they were first discovered in the 1600sc. they can be f

ound in pond waterd. they contain a huge array of working parts
Biology
1 answer:
Harlamova29_29 [7]3 years ago
5 0

Answer:

The answer is a. they are much like empty rooms.

Explanation:

Cells are pretty much the opposite of empty rooms. There are many organelles and processes happening in them, so there's no space for empty rooms. Even when there are spaces, which anyway would be full of liquid, these spaces have a purpose.

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A ____ of lack of rain turned the topsoil to dust
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The answer you are looking for is “Drought”.

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3 years ago
Know what makes a solution acidic or basic (the pH number and the ions).
Brrunno [24]

To determine whether an acidic or basic solution, it is first necessary to compare the concentrations of the hydronium (H3O +) and hydroxide (OH-) ions in the solution.

In acidic solution, the concentration of H3O + ions is higher than that of OH- ions.

  • In acidic solution, the concentration of H3O + ions is higher than that of OH- ions. Such a solution can be achieved by adding a small part of the H3O + ions, for example. Acid solutions have a pH below 7, the further away from 7 the pH of the solution is the higher its acidity content.  According to Le Chatelier's principle, when a disturbance is caused to an equilibrium system, it tends to readjust in order to diminish the effects of that force. This means that if an acid is added to water, the H3O + ions will be in excess and the equilibrium will shift in the opposite direction to the left. Then these excess ions will react with the OH- ions. Thus, the concentration of OH- ions will decrease and the solution will become acidic.
  • In basic solutions, the concentration of OH- ions is higher than that of H3O + ions.  If we add a base to the water, it means that we will be adding OH- ions and, as explained in the previous section, by Le Chatelier's principle, the equilibrium of the water selfionization reaction will shift in the opposite direction, and the excess ions will react. with the H3O + ions, decreasing their concentration and making the basic solution.  Basic solutions have a pH greater than 7, the farther from 7 and closer to 14 the pH of the solution, the higher the basification content.

8 0
3 years ago
Select the correct answer.<br> Which of these is a protein?
shusha [124]
Um i don’t see anything
6 0
3 years ago
Only red algae can grow in relatively deep regions of the ocean because red algae are: Select one: a. capable of absorbing carbo
Effectus [21]

Answer:

b. specialized for absorbing shorter wavelengths of light that penetrate deeper into the water for photosynthesis.

Explanation:

There are two lights which are responsible for the photosynthesis in plants and algae i. e. red and blue light. These two lights are absorbed by the plants and algae in the process of photosynthesis while most of the light colors are reflected. In water red light remains in low depth while blue light penetrate deep into the water due to its shorter wavelength. So that's why red algae can grow due to the presence of blue light and photosynthesis occurs.

4 0
3 years ago
Read 2 more answers
Which is a correct way to paraphrase the following:
beks73 [17]

Answer:

The paraphrase consists in saying with simpler words and with less technical words those obtained from a text. In this way, it facilitates its understanding, because the original information extracted is expressed in a simpler way.

The correct way to paraphrase is 2.  Every organism must acquire and use energy to build new structures, repair old ones, and reproduce

Explanation:

That option is referring to nutrition, which is the process by which nutrients contained in food meet the needs of cells and allow the proper development of organs. For example, certain organs such as the liver, brain, heart and kidneys, in normal conditions account for 60-70% of total energy expenditure of the organism, to which we must add the energy used in the synthesis and in the new tissue formation

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