Answer:
The correct answer will be- The blood sample will become hypotonic as a result of which RBC will swell.
Explanation:
In the given question, water was given to the patient who lost his blood in the accident.
The addition of an equal amount of water could have caused the blood solution to become hypotonic that is with low salt concentration and high water potential.
Since the solution is hypotonic and the concentration of water is high in blood than in blood cell, the water will move inside the Red blood cell through diffusion and the cell will swell and could burst. This would lead to the death of the patient.
Thus, the blood sample will become hypotonic as a result of which RBC will swell is the correct answer.
Prey Animals such as antelope and gazelles population will go up and the ecosystem will be out of balance
Answer:
This question lacks options, the options are:
A. They may act to turn on gene transcription.
B. They may act to turn off gene transcription.
C. They may become added to DNA, and then be transcribed.
D. They may remove a gene from DNA.
E. They may alter the nucleotide sequence in a gene.
Options A and B are the answers.
Explanation:
Prokaryotes regulate gene expression at the transcriptional level. Gene expression is the process whereby living organisms synthesize useful products such as protein from a gene. Prokaryotes such as bacteria control the expression of their genes via proteins that bind to DNA called REGULATORY PROTEINS.
These regulatory proteins also known as TRANSCRIPTION FACTORS, act to regulate genes by binding DNA. The binding of DNA either prevents or promote the binding of RNA polymerase in order for transcription to occur.
- Regulatory proteins which may act to inhibit transcription of DNA by turning off gene are called REPRESSORS.
- Regulatory proteins which may act to promote transcription of DNA by turning on gene are called ACTIVATORS.
Plants harness the energy of sunlight to make carbohydrates.
This energy is used to break the bonds
of water and carbon dioxide molecules and rearrange the atoms to form glucose and expend
oxygen. This glucose is used to form the structural elements of the plants and also in
providing energy. Therefore, when we consume plants directly we are consuming energy
from the sun. Also when we consume meat, the energy of the sun has passed through
the secondary consumers who feed on plants.