What is the function of a mitochondrion?

Biology

1 answer:

Kobotan [32]3 years ago

7 0

Answer:

Explanation:

Just like the famous saying "The mitochondria is the power house of the cell" it creates ATP which is energy for the cell. It breaks down glucose to do so and is a key factor in cells

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Which of the following terms correctly describes DNA replication?

Svet_ta [14]

Answer:

D) A and B

Explanation:

DNA molecule replication, also known as duplication or polymerization, is a genetic phenomenon that ensures self-duplication of information contained in chromosomes, specifically in genes.

DNA replication is semi-conservative, each strand serves as a template for the construction of a new molecule. This process allows genetic information (nucleotide sequence) to be copied extremely simply and efficiently. Moreover, replication is bidirectional, that is, it occurs in both strands of DNA at the same time through a replication "bubble" with two forks that move in opposite directions.

5 0

3 years ago

Indicate whether each of the following, when active, tends to activate (A) or inactivate (I) M-Cdks. The correct answer will be

MrRissso [65]

Explanation:

Cell cycle is mainly divided into two phases-Interphase and Mitotic phase
Interphase is the preparatory phase whereas mitotic phase is the dividing phase
Various cyclins and Cdks are regulated during these phases
M-Cdks stands for Mitotic Cyclin Dependent Kinases which helps in cell cycle regulation
Cdks are the catalytic subunit bound to the regulatory subunit(cyclins)
Mitosis includes four stage namely Prophase,Metaphase,Anaphase and Telophase
During the Anaphase stage separation of sister chromatids occurs due to the destruction of a protein called cohesin
Destruction of cohesin is catalysed by an enzyme called separase
Prior to anaphase securin binds to separase and inhibits its activity
The APC(anaphase promoting complex) with specificity factor Cdc20 tragets securin for polyubiquitination which then degraded by proteasome
The separase released becomes active and breaks the bridge between sister chromatids
Movement of sister chromatids occurs towards their respective poles
In late anaphase,specific phopshates called Cdc14 removes the regulatory phosphate group from cdh1 specificity factor and therefore Cdh1 becomes active
Active Cdh1 specificity factor binds to and activate APC(anaphase promoting complex)
Cdh1 bound APC catalyse ubiquitination of mitotic cyclins
As the mitotic cyclins are degraded by the proteasome,onset of telophase starts
Wee1 is a kinase enzyme which comes into consideration in case of fission yeast
Wee 1 phosphorylates the inhibitory site of M-Cdk which further leads the cells to enter into mitosis

5 0

3 years ago

What must occur for a process to be a chemical reaction?

VLD [36.1K]

There must be a change in the chemical composition of the substance and the change is highly irreversible

3 0

3 years ago

Define plant hormone in your own words.

Alik [6]

Answer:

Plant hormones is an organic substance other than a nutrient. In mere minutes amounts modifies a plant physiological process.

Explanation:

Hope This Helps

Have A Great Day

4 0

3 years ago

Why is it necessary to rinse the inside of erlenmeyer flask with di water periodically?

qaws [65]

Hi there!

It is necessary to rinse the inside of an Erlenmeyer flask with deionized water periodically to wash the flask without adding ions which could affect the titration.

If you wash an Erlenmeyer flask with regular tap water, you are adding ions, like sodium or chlorine, which could make you miss the equivalence point by only tenths of mL (that's a big difference when titrating). This is why when washing you use deionized water to clean the flask while ensuring that your titration is accurate.

Have a good day!

8 0

3 years ago