List and describe three factors that could possibly affect catalase activity.

1 answer:

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Catalase is an enzyme which is present in every living organism that is exposed to oxygen. Catalase's activity is affected by temperature, pH and the concentration of substrate. In catalase's case, the substrate is the hydrogen peroxide. If any of these factors change, the effectiveness of the catalase to catalyze the decomposition of hydrogen peroxide will deteriorate. If the temperature and pH change, the shape of the enzyme will change as well. This denaturation of the enzyme will obstruct the hydrogen peroxide molecules to fit in the catalase's active site.

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Answer:

A. centrosome

Explanation:

The centrosome is known as the main microtubule-organizing center in the animal cells.
The centrosome constitutes of two centrioles and is surrounded by the pericentriolar material which is nothing but a structured matrix of proteins.
It is the center through which the microtubules emerge.
In animal cells, the centrosome is associated with the formation of spindle fibres.

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Firewood is made up of cellulose, which is a polymer of glucose molecules. When burning, heat and light are given off, indicatin

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Answer:

Exergonic reaction

Explanation:

A chemical reaction which is associated with a release of energy and thus, is associated with a negative free energy change is said to be an exergonic reaction.

An exergonic reaction owing to the negative free energy change is a spontaneous reaction.

The energy that is released in the exergonic reaction is usually observed in the form of heat and light.

The energy is released due to the breaking of the chemical bonds.

Therefore, on burning of the firewood the bonds between the glucose molecules break up which leads to the release of energy in the form of heat and light and this is thus, an example of an exergonic reaction.

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About half of all babies are able to walk independently by __________ months of age.

Liono4ka [1.6K]

I think that about half of all babies are able to walk independently by 12 month of age. It said that babies tend to take their first steps from the age of 9. Babies usually start to crawl before they can walk. This is because their arm are usually more effective. After crawling they learn to stand up with their feet first and later learn to walk while holding things. The next step after that is walking.
Not all babies walk at the same time. There those that learn before the other so there is no need to worry if your child does not walk by 12 months.

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It is "B. Cleaning a countertop with a sponge and <span> rinsing it out to reuse" that represents and example of conservation. Re-using items is better than throwing them away if possible. </span>

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3 years ago

The Champaign-Urbana area has long been suffering from the heinous pathogenic bacterium, Michiganious wolverinous, which causes

Nadusha1986 [10]

Answer:

The correct answer is option a, that is, 3000 cases.

Explanation:

The measurement of all the individuals getting influenced by the disease at a specific time is known as the prevalence. On the other hand, the measurement of the number of novel individuals that came into contact with a disease during a specific time duration is known as the incidence.

Based on the given question, the number of prevailing cases carried from 2018 to 2019 is 2000, and the new diseases recorded in the year 2019 is 1000 (incidence). Therefore, the prevalence of the disease in 2020 will be 3000 cases.

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