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Galina-37 [17]
3 years ago
8

HELP!!!!!!!!!

Biology
2 answers:
tino4ka555 [31]3 years ago
5 0

Correct answer: C). Cells are the basic building blocks of life but do not constitute life itself

Cell theory in a biology is a scientific theory, which is universally accepted and it states that all living organism are made up of one or more cells, cell is the building block of living thing, it also states that all cell arise from ore existing cells.

The cell theory is collection of ideas and conclusion, which were given after many years of continuous research and experiment of many scientist, which tells about the cell and how it operates.



bearhunter [10]3 years ago
5 0

Answer: The correct answer for the blank is -

All three options.

Explanation -

The Cell theory was proposed by Schleiden and Schwann in 1839, which follows-

1) Cell is considered as the basic structural and functional unit of all living organisms.

2) All life forms are composed of cell.

3) Every cell comes or arises from a cell that already existed before.

Thus, all three options are correct in this question.

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A student wants to view a cell’s mitochondria. Which of the following microscopes would show a mitochondria’s internal structure
Olegator [25]

Answer:

Transmission Electron Microscope would show a mitochondria’s internal structure in the greatest detail

Explanation:

The TEM is used to visualise the internal structure of the cells. This works when an electron beam of light passes through the object or the sample, it shows a clear presence of the organelles inside the cell. The TEM uses the energetic electron which provides the morphological as well as compositional and crystallographic features of the cell. Its maximum potential is about 1 nanometre. Among the most powerful microscope for studying the internal organelles of the cell TEM is one.

5 0
3 years ago
4 The graph below shows how the activity of an enzyme changes
choli [55]

Answer:

A

Explanation:

A. The optimum pH of the enzyme is 6.6.  - this is true. The optimum pH of the enzyme is where its activity is the highest. On the graph, this is pH 6.6 (activity at 100)

B. The optimum pH of the enzyme is 5.8.  - this is false, the activity of the enzyme peaks at 6.6 (100), at 5.8 the activity is 80

C. The enzyme's activity is greater around pH 8.0 than around  pH 5.0  - This is false, the activity at pH 5 is 50, whereas at around 8 it is 20.

D . The enzyme's activity continually increases as pH increases  from 5.0 to 9.0 - this is false. The activity drops between pH 6.6 and pH 9.

6 0
3 years ago
Which question is most important to humanistic and positive psychology?
nlexa [21]

Answer:

D, what do people need to be happy

Explanation:

first we need to understand what positive psychology means. Positive Psychology according to Wikipedia can be defined as <em>the scientific study of the "good life", or the positive aspects of the human experience that make life worth living. </em>

Therefore the correct option is D

3 0
3 years ago
The most common type of settlement in the world is a __________ settlement.
Ivenika [448]

Answer:

B

Explanation:

THE ANSWER IS B

8 0
3 years ago
What is similar about the elements in each group of the perodic table ?
Mandarinka [93]

Answer:

The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.

5 0
2 years ago
Read 2 more answers
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