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KATRIN_1 [288]
3 years ago
13

The cell theory states that all cells arise from existing cells. Which scientist first

Biology
1 answer:
horsena [70]3 years ago
4 0

Answer: C. Theodore Schwann

Explanation: The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.

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the data collected over the years clearly confirm depletion of ozone in the stratosphere. what do scientists still need to learn
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Production is highest where the solar uv is the greatest eg near the tropics, but once created, the ozone is then circulated towards the poles by the atmosphere. The amount of ozone in the stratosphere can vary with location, season and even day to day climatic conditions.

<span>The process of ozone creation is what makes the O3 in the atmosphere very effective at shielding the Earth from harmful uv radiation, which can cause many biological problems, such as skin cancer. However, due to its high reactivity, the uv found in the tropospher at ground level can aslo be dangerous as a toxic pollutant which is harmful to plants and lung tissue, and is a major cause of smog.</span>

5 0
3 years ago
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Enzymes catalyze chemical reactions that keep cells alive. imagine that a cell had no enzymes. how would having no enzymes affec
Salsk061 [2.6K]
The chemical reactions in the cell would not happen as fast and would require more energy to catalyze the reaction between the two reactants.

Mark brainliest if I helped you 

Chemistry/ Example: Take breathing for example, when you breath you breath out carbon dioxide. The CO2 can't just leave like that and only 10% binds to hemoglobin. The rest turns into carbonic acid in your blood and its plasma. However, the acid is unstable, so it turns into bicarbonate and a dissociated proton (H). You have carbonic anhydrase that converts the two so you can breath out CO2; the carbonic acid separates into H2O and CO2. This process would take a LONG time without the enzyme-- CO2 build up, even minimal amounts it lethal. 
8 0
3 years ago
For which types of microbes would a microbiologist employ living host cells to support their growth?
Genrish500 [490]

Answer:

Correct Answer is Viruses

Explanation:

Viruses are non-cellular entities that consist of a nucleic acid nucleus (DNA or RNA) surrounded by a protein layer. Although viruses are classified as bacteria, they are not considered living organisms. The microbes such as viruses cannot reproduce outside a host cell and cannot metabolize on their own. Viruses often infest prokaryotic and eukaryotic cells that cause disease.

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a section of the crust moves under another section of crust without changing the land above. from the surface, the process would
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It's called a tectonic shift.
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What does NADPH add to the Calvin-Benson cycle?
bearhunter [10]
NADPH adds electrons
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3 years ago
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