neutron
cell
nucleus
*the discovery of atomic structure which led to the development of an electron microscope
*the discovery of the structure of DNA, which occurred as the result of an X-ray image of a DNA molecule
*the discovery that plant pigments can be separated and identified by using paper and a solvent
Answer: Option C
Explanation:
The discovery of the structure of DNA was done with the help of Technique named X-ray crystallography. The structure of the DNA was created by the diffraction pattern that was produced by the x-ray crystallography.
This method was used to find the structure of the DNA that was used to study more properties of the DNA.
Answer: The correct answer is -
population of bacteria that has a high mutation rate.
Mutation can be described as permanent change in the genetic material of a living organism.
A population is said to be evolving if it changes over time due to change in the inheritable traits of the population.
With high mutation rate, there will be change in the frequency of gene variant (allele) and natural selection will act on the beneficial genes.
Due to this, over generations, bacterial population with high mutation rate will most likely to be evolving (that is change in the bacterial population will occur due to changes in the inheritable traits).
B) concurrent transcription and translation
C) translation in the absence of a ribosome
D) gene regulation
Answer:
The correct answer is B) concurrent transcription and translation
Explanation:
In eukaryotes transcription occurs in the nucleus of the cell then this transcript is transported outside the nucleus in the cytoplasm through the nuclear pore for translation to take place because ribosomes other important enzymes are present in the cytoplasm of the cell. So nucleus separate transcription and translation in eukaryotes.
In prokaryotes there is no such membrane-bound nucleus, therefore, the prokaryotic genetic material is present in the cytoplasm of the cell and transcription and translation runs together which means translation occur simultaneously with transcription in prokaryotes.
So in prokaryotes, concurrent transcription and translation occurs, therefore, the right answer is B.
The process that occurs in prokaryotes but not in eukaryotes is concurrent transcription and translation. Prokaryotes can synthesize mRNA and translate it into proteins simultaneously because they lack a separating nucleus, unlike eukaryotes.
The process that occurs in prokaryotes but not in eukaryotes is B) concurrent transcription and translation. In prokaryotes, due to the absence of a nucleus, mRNA synthesis (transcription) and protein synthesis (translation) occur simultaneously in the cytoplasm.
On the other hand, in eukaryotes, the nucleus separates the processes of transcription and translation; transcription occurs inside the nucleus and translation takes place in the cytoplasm. Post-transcriptional splicing, gene regulation, and translation with a ribosome all occur in both types of cells.
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b. a sepal.
c. a pistil.
d. a carpel.
B) seed production.
C) sexual reproduction.
D) asexual reproduction
The correct answer is D) asexual reproduction
Growing new plants from stem cut is a method of asexual reproduction or better it is regarded as vegetative propagation. When vegetative parts such as root, stem or leaf is used to grow new plants is known as vegetative propagation. This type of propagation does not involves fusion of gametes. Asexual reproduction or vegetative propagation is rapid method to grow new similar plants.
Producing a new plant from the somatic, or body cells of an adult plant is a form of asexual reproduction . In this case, the farmer took a cutting in order to grow a new tree by asexual reproduction.