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PolarNik [594]
1 year ago
14

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]1 year 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 <u>breaking down hydrogen peroxide</u>, 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 <em>human body temperature</em>. 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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2 years ago
A scientist isolated the Hepatitis B surface protein gene and introduced it into the DNA of a banana plant. The scientist tested
omeli [17]

Answer:

A. The gene for surface protein was transcribed and translated.

Explanation:

Because all living organisms use the same genetic code, it is possible to express genes from one organism in the other. In this case, the DNA sequence that corresponds to the hepatitis B surface protein gene has been inserted into the banana, and the protein is expressed.

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1 year ago
The nuclear membrane's role in the regulation of gene expression involves _____. The nuclear membrane's role in the regulation o
Gala2k [10]

Answer:

regulating the transport of mRNA to the cytoplasm

Explanation:

In eukaryotes, the process of transcription occurs in the nucleus while ribosomes are present in the cytoplasm or on the surface of the rough endoplasmic reticulum. Therefore, the mRNA should leave the nucleus and enter the cytoplasm to serve in the process of protein synthesis. The nuclear envelope contains the nuclear pore complex (NPC). The nuclear pore complex includes several specific nucleoporins embedded in the nuclear envelope.

The NPC serves as the passageway for the transport of mRNA molecules to the cytoplasm. The mature mRNA binds to specific exporter proteins in the nucleus and forms ribonucleoprotein particles that are allowed to pass through the nuclear pore complex.

The middle and carboxyl domain of mRNA exporter binds to the phenylalanine-glycine (FG) repeats in FG nucleoporins to facilitate the mRNA transport. Therefore, the transport of mRNA from the nucleus to the cytoplasm is regulated by the nuclear pore complex. This is how the nuclear membrane is involved in the regulation of gene expression.

8 0
1 year ago
Sally and Harry fall in love. They introduce Sally's identical twin, Emily, to Harry's identical twin, Ken. Soon there is a doub
Lesechka [4]

No their babies won't look alike.

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Both the couples mentioned here i.e. Sally - Harry and Emily - Ken are both identical twins. So they have similar pairs of genetic setup. This was possible because they developed from same zygote.

But during gametogenesis, crossing over and independent assortment occurs which brings about variation in genetic setup among the offspring. And it's very less probable that same crossing over will occur between the gametes of these couples. So, their offsprings won't look same.

6 0
1 year ago
Within interphase which of the stages is defined by the active replication of the cell's genetic material
Gnoma [55]
The stage that is defined as the active replication if the cell's genetic information in interphase would be the S phase or DNA synthesis phase.
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2 years ago
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