D) AGU UCC sch that's your answer
Answer:
Oncogenes result from a mutation in proto-oncogenes.
Explanation:
- Protooncogenes control the growth and division of cells.
- The proteins encoded by proto-oncogenes include growth factors, growth factor receptors, transcription factors and signal transducers.
- They contribute to the transformation process by driving cell proliferation or reducing sensitivity to cell death.
- Several types of genetic and epigenetic changes convert these proto-oncogenes to oncogenes.
- Oncogenes arise due to the changes that increases the expression of proto-oncogenes .
- Oncogenes are one of the causes of cancers.
A proto-oncogenes can turn into oncogene by following ways:
- A point mutation such as deletion, insertion and substitution in the proto-oncogene can lead to formation of oncogenes.
- Chromosomal translocation may result in activation of proto-oncogene as seen in Burkitt's lymphoma.
- Insertion of a mobile genetic material such as retrovirus changes the gene expression, but leaves their coding sequence intact.
- Activation of proto-oncogene can also occur from reduplication and amplification of DNA sequence.
Answer:
The high transmittance (low absorption) reading indicates that chlorophyll absorbs very little green light.
The low transmittance (high absorption) reading indicates that chlorophyll absorbs most blue light
Explanation:
- The galvanometer is a device which is used for measuring the electric current.
- In a spectrophotometer the galvanometer is attached to indicated the amount of light that is getting transmitted through a sample.
- If the amount of light that is getting transmitted from the sample is more, the reading of the galvanometer would be higher and if less light is transmitted the reading of the galvanometer would be less.
- Further, the transmittance of a light is inversely proportional to the absorption, that is if the absorption would be low transmittance would be high and vice versa.
- Therefore, when the chlorophyll is exposed to green light, the transmittance is high and this implies that the absorption of green light would be less.
- Similarly, when the chlorophyll is exposed to blue light, a low transmittance indicates a higher absorption of blue light by chlorophyll.
The correct answer would be wind, coriolis effect and land. Hope this helps! :)
The answer is muscle cells. This is because they are responsible
for either voluntary movement (skeletal muscle) or involuntary movement (smooth muscle). This movement requires energy to
power the movement of the actin and myosin action
that is the core of every muscle. Each myosin has an ATP-binding site.
