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2 years ago

When testing the temperature of catalase, why did the enzyme catalase work best at 37°C? (Select all that apply.)

Biology

1 answer:

mojhsa [17]2 years ago

5 0

Answer:

The correct answers are: B) Catalase works best at human body temperature, C) Normal human body temperature is 98.6°F, which equals 37°C.

Explanation:

Catalase is an enzyme found in our bodies that has the important task of breaking down hydrogen peroxide, a molecule that is very toxic. For catalase to work at its optimus speed, it need the body to have a temperature of 37° celsius -98.6°F-, which is what we normally call human body temperature. If the temperature rises or falls below body temperature, catalase will still work but at a much slower rate, until it stops working completely.

Not all enzymes work best at human body temperature, some enzymes reach their optimus state at higher or lower temperatures; but it is important to remember that enzymes are proteins, and proteins denaturalize when the temperature becomes to high, making them lose their shape and function.

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Carbohydrates and proteins are two types of macromolecules. which functional characteristic of proteins distinguishes them from

-BARSIC- [3]

Answer;

-Ability to catalyze biochemical reactions

Explanation;

-Carbohydrates and proteins are very important macromolecules that the body needs in significantly larger quantities together with lipids, as compared to other nutrients like vitamins or minerals, for a healthy life.

-Carbohydrates are organic compounds made up of carbon, hydrogen and oxygen and they are required by the human body as an energy source, while are organic compounds made up of interlinked chains of amino acids, which consist of carbon, hydrogen, oxygen, nitrogen, and sulfur.

Apart from the structure and element composition, carbohydrates and proteins differ in a number of ways, these includes; carbohydrates are the body’s main source of fuel that enables it to function, proteins are the building blocks of the body.

Carbohydrates are needed by the body to make it run and function, while we need proteins to keep our muscles and glands healthy. Additionally, proteins have the ability to catalyze biochemical reactions a major feature that differentiates it from carbohydrates and other macromolecules.

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2 years ago

Do bacterial cell membranes have cholesterol

givi [52]

Bacterial cell membranes do not have cholesterol. The principal function of the cell membrane is to regulate the substances that enter the cell and the substances that move out of the cell. Cholesterol is a fat like substance that is found in all human cells; it is an important constituent of the cell membrane and it enhances the fluidity of the cell. Bacterial have plasma membrane but the membrane do not contain cholesterol.

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2 years ago

Rosa uses a microscope to look at a group of cells she she sees that the cells are joined together so she knows that they are fr

Vesna [10]

Maybe a plant or a fungus.

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2 years ago

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The wells that contain the DNA samples are placed next to the negatively charged electrode in the electrophoresis box (chamber)

Katen [24]

Answer:

DNA is negatively charged

Explanation:

Electrophoresis: In biology, the term "electrophoresis" is described as one of the different laboratory technique that is being utilized to separate protein molecules, DNA, and RNA one the basis of their electrical charge and size. Therefore, a specific amount of "electric current" is being used to move different molecules that are required to be separated through a "gel". The given gel contains pores that generally works like a "sieve" and thus allows every small molecule to proceed faster as compared to the larger molecules.

DNA stands for "deoxyribonucleic acid" is determined as a long molecule that ought to contain an individual's unique "genetic code" and generally carried information associated for making proteins in an individual's body.

In the question above, the correct answer is "DNA is negatively charged".

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2 years ago

At the site of the rough endoplasmic reticulum, proteins that are destined for secretion are manufactured. Insulin is a protein-

Eva8 [605]

Answer:

The type of vesicular transport involved in the exporting of protein-based hormones, such as insulin, into the bloodstream is regulated exocytosis.

Explanation:

In general terms, exocytosis is a type of active transport that allows intracellular substances are released to the extracellular space, through of vesicles that fuse with the plasma membrane, which allow the exit of substances from inside the cell.

Regulated exocytosis is the specific vesicular transport for the secretion of substances, such as hormones. For this type of transport to exist, the presence of an extracellular signal is required, which will activate the fusion of the vesicles.

In the case of insulin, the external signal originates with the increase in blood glucose levels, a signal that penetrates the intracellular space and generates an increase in insulin production in the islets of Langerhans (pancreas).

Before insulin secretion occurs, the cell must be depolarized, allowing calcium to enter, which promotes transport by regulated exocytosis of insulin to the extracellular space.

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2 years ago