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irinina [24]
2 years ago
14

How was the Earth different 4.6 billion years ago than it is today

Biology
1 answer:
vfiekz [6]2 years ago
8 0
The geological features were different. And humans development was different.
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Cite the three main types of RNA and describe briefly the function of each.
sveticcg [70]

Answer:

mRNA: Carry genetic information from DNA to protein; serve as template for protein synthesis.

tRNA: Serves as adapter molecule and deliver specific amino acid from the cell pool to the mRNA-ribosome complex.

rRNA: Structural component of ribosomes.

Explanation:

There are three types of nongenetic RNAs: mRNA, tRNA, and rRNA.  

1. The messenger RNA (mRNA) is formed by the process of transcription in the nucleus. Transcription uses template strand of DNA to specify the nucleotide sequence in mRNA. The mRNA enters cytoplasm to join ribosomes. The nucleotide sequence of mRNA serves as a template and specifies the amino acid sequence of proteins.  

2. The transfer RNA (tRNA) serves as an adapter molecule during the process of protein synthesis and binds to the specific amino acids to deliver them to the protein-synthesizing machinery. The anticodon of tRNA binds to the complementary mRNA codons.  

3. The ribosomal RNA (rRNA) serves as structural components for ribosomes. Each of the subunits of ribosomes is made up of rRNA and proteins.  

8 0
3 years ago
Glycolyis occurs ________________
Leno4ka [110]

Answer:

Both aerobic and anaerobic respiration.

Explanation:

Glycolysis may be defined as the process of break down of glucose molecules for the formation pf ATP with the help of enzymes and chemical factors. Glycolysis occurs in the cytosol of the organism.

Glycolysis may occur in the presence of organism known as aerobic respiration. The glycolysis can occur in the absence of oxygen as well known as anaerobic respiration. The steps involved up to the formation of pyruvate molecule from the glucose is same in case of aerobic and anaerobic respiration.

Thus, the correct answer is option (c).

4 0
2 years ago
The time needed for a typical atom in an oceanic plate to complete a plate-tectonic cycle is ____________ years.
Ivan

The time required for a typical atom in the oceanic plate to complete the plate tectonic cycle is about in excess of two hundred fifty million years in which this is required for it to developed and to be fully complete for it to fully finish the plate tectonic cycle.

7 0
3 years ago
After a cell division each daughter cell has
Artyom0805 [142]
The Answer Is 2 Parent Cells

8 0
3 years ago
Read 2 more answers
An example of a communicable disease is
Lynna [10]

Answer:

D giardiasis is the correct answer :)

5 0
2 years ago
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