Please answer the questions ill mark you brainlist

Biology

1 answer:

Andrews [41]3 years ago

4 0

Answer:

Explanation:

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What are some activities that cells engage in that require energy? And from where do cells obtain the energy they need to make A

malfutka [58]

Some activities that cell requires energy may include cell division, active transport, protein synthesis etc.
In human, Cells get their energy by the food we eat. The nutrients in the food breaks down into soluble and simple molecules in stomach and small intestine and it is absorbed through the small intestine and assimilated into the cells, becoming part of it, providing the uses for each type of nutrient. And of course, many of them is the energy source.

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Air pollution is caused primarily by:

Leona [35]

The answer is C. nuclear power plants.
petroleum and other factory is one the major cause of air pollution. Pollution emitting from vehicles including trucks, jeeps, cars, trains, and airplanes cause immense amount of pollution.

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The function of an enzyme depends on its ...... HELP

Aleksandr-060686 [28]

Answer:

It depends on its Three Dimensional shape

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Where must an mRNA attach before protein production can begin?

kap26 [50]

Answer:

to a Ribosome

Explanation:

mRNA is produced inside the nucleus of a cell according to the genetic information present in the DNA of the cell. this process is known as Transcription.

Then it's sent to ribosomal subunits in the cytosol through nucleopores. then it attaches to the ribosome. the ribosome reads the nitrogenous base sequence and pairs the tRNAs with complementary nitrogenous bases. (your answer is here, but if you want to know more, continue reading it.)

Each tRNA contains a tri-nucleotide that is collectively known as an anticodon which has the complementary bases of the relevant codon on the mRNA.

Each tRNA has captured a protein. the type of protein is determined by the sequence of the anticodon.

It means two tRNAs with two different anticodons cannot bring the same protein to the ribosome.

the Ribosome separates the proteins attached to tRNAs and links them as a chain.

the final result is a polypeptide chain. I explained to you the basic protein synthetic process.

image credit: Wikipedia

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4. What are the two big groups into which cells are classified?

slavikrds [6]

prokaryotic cells & eukaryotic hope i could help

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