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Luba_88 [7]
3 years ago
10

When cells join together, what is formed? A. Tissue B. Organs

Biology
2 answers:
Stells [14]3 years ago
8 0

Answer:

A. Tissue

Explanation:

Just as cells join together to form tissues

weeeeeb [17]3 years ago
6 0

Answer:

A. Tissue

Explanation:

The cells join together to form tissues. So, option (A) is the correct answer.

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Copper is listed in the 29th position in the periodic table. It’s used for conducting electricity. What is copper?
Llana [10]

Answer:

stuff

Explanation:

8 0
3 years ago
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The ultimate goal of energy metabolism is to transform energy-yielding nutrients into what compound?.
coldgirl [10]

The ultimate goal of energy metabolism is produce the compound called ATP.

<h3>What is ATP?</h3>

This is known as Adenosine triphosphate and it is referred to as the energy currency of the cell.

It is formed during energy metabolism from energy-yielding nutrients such as carbohydrates etc which was why it was chosen as the most appropriate choice.

Read more about ATP here brainly.com/question/897553

4 0
2 years ago
44. Which of the following choices is NOT a major component of vascular plant leaf anatomy?
Aliun [14]

Answer:

The correct answer is option d. "Elastic channels".

Explanation:

The vascular plants uses xylem and phloem cells that carry water and nutrients to all the parts of the plant, which are present in the leaves of the plant. Stomata is part of the vascular system of a plant, but it serves for gas exchange instead of water and nutrients exchange. Palisade mesophyll is a structural component that contains columnar cells with spaces between them, located in the leaves of vascular plants as well. A component that is not part of the vascular plant leaf anatomy are the elastic channels.

5 0
3 years ago
I. Plant cells are formed from fertile soil.
Dmitriy789 [7]

Answer:

Option-B

Explanation:

Schleiden was a German botanist and Schwann was a German zoologist who independently observed that plants and animals are made of cells.

Once when they together met in a conference, they shared what they observed and later both reached the conclusion that cell is the functional and structural unit of living organisms.

In the given question, since Schwann was a zoologist, therefore, he concluded that the cell in an organism must function properly whereas Schleiden was a botanist and concluded that the different structures of a plant are composed of cells.

Thus, Option-B is the correct answer.

6 0
3 years ago
Read 2 more answers
An enzyme contains a catalytic histidine residue in its active site that must release an R group proton to solution in order to
hjlf

Options missing:

a) The pH of the environment should be relatively high.

b) The pH of the environment should be relatively low.

c) The pH of the environment would not matter.

d) The environment should be set to the biochemical standard state.

Answer:

a) The pH of the environment should be relatively high.

Explanation:

For optimal function an enzyme needs a certain environment or condition. As temperature increases, the rate of enzyme activity also increases. As temperature increases toward its optimum point of 37 degrees Celsius (98.6 F), hydrogen bonds relax and make it easier for the hydrogen peroxide molecules to bind to the catalase.

The part of the enzyme where this reaction takes place is called the active site. A temperature that is higher or lower than this optimum point changes the shape of the active site and stops the enzyme from working. This process is called denaturation.

Enzyme pH levels also change the shape of the active site and affect the rate of enzyme activity. Each enzyme has its own optimal range of pH in which it works most effectively. In humans, catalase works only between pH 7 and pH 11. If the pH level is lower than 7 or higher than 11, the enzyme becomes denaturated and loses its structure. The liver sustains a neutral pH of about 7, which creates the best environment for catalase and other enzymes.

General acid catalysis would require histidine to be protonated at pH values (pH 8.0) optimal for enzymatic activity which is relatively high.

3 0
3 years ago
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