The answer is; B
Rocks have naturally occurring and spontaneously radioactive atoms in them, such as carbon-14. These element isotopes decay into other types of atoms over millions of years. Therefore, by measuring the amount of these radiometric substances, and knowing the half-life of the isotopes, it is possible to postulate the age of a rock to within certain ranges of error.
<h2>Answer:</h2>
The living cell concentration is hypertonic than outer solution hence the concentration of solutes will be higher than the solvent.
<h3>Explanation:</h3>
- In the question description it is mentioned that cell is present in the hypotonic solution than cell environment will be hypertonic.
- In the cell the solute will present in the concentrated form.
- Hence the water will move from the outer environment into sell through the osmosis.
- Osmosis is the movement of water from higher concentration to low concentration through semi permeable membrane.
- Hence the cell will swell due to water collection in cell.
Answer:
intracellular is the correct answer
Corpus Callosum is a band of thick fibres which connects the hemispheres of the brain.
Answer:
Letter E - exons are cut from the strand and removed
Explanation:
Letter A and B are incorrect because the poly-A tail and guanine cap are added to the 3’ and 5’ end respectively. They aid in translation of the mRNA, while serving as protection. The poly-A tail is repeated adenine nucleotides, while the guanine cap is a modified guanine nucleotide.
Letter C is incorrect because alternative splicing is one mechanism for generating variation, and is thought to be one of the reasons for why humans have smaller genomes than other organisms and still maintain high complexity. Alternative splicing is incredibly important because it produces more than one transcript from a pre-mRNA.
Letter D is incorrect because introns are the non coding portions of the mRNA. They are excised to make a smaller mRNA transcript, and one that contains all the protein genes.
This letter E is the correct answer, because exons are the coding portions of the mRNA, and are not excised during RNA processing.
Hope that helped! If I made a mistake, please let me know.
