Answer: Protein molecules are made through the transcription of a DNA strand into an mRNA strand and the translation of the mRNA into a protein. Transcription takes place in the nucleus of the cell while translation takes place in the ribosome.
Explanation: Transcription is a process of copying the genetic message encoded in a DNA strand into a messenger RNA (mRNA). This process is the first step in protein synthesis and takes place in the nucleus. It is catalyzed by an enzyme known as RNA polymerase. The synthesized mRNA then leaves the nucleus and enters the ribosome where translation occurs. During translation, the mRNA passes through the ribosome complex three nucleotides at a time where the codon is read and the corresponding amino acid coded for is fetched and attached to the peptide chain by the transfer RNA (tRNA). Translation starts when the ribosome encounters the start or initiation codon on the mRNA molecule. The start codon is AUG and it codes for methionine. Translation stops when the ribosome encounters the stop or termination codon. There are three termination codons and they are so named because they do not code for any known amino acid. The termination codons are UAG, UAA and UGA.
Answer:
I am not sure but I think the answer is of last one.
Answer:
Option-A
Explanation:
In the given question, since the examiner has mentioned the time that the factor the researcher should include during the development of a new drug is "the placebo". A placebo is used during the experiment as control by and its effect depend on the expectations of the patient since the placebo does not contain the active drugs.
The FDA approval, informed consent and the information are not used until the study is going on.
Thus, Option-A is the correct answer.
Star A is B, a white dwarf.
Star B is C, a Red Giant
Answer:
Explanation:
There difficulty because as time goes on the accuracy decreases reason is because the atmosphere is nonlinear dynamical system .
Modern meteorologists usually have difficulty be to predict accurately in the absence of numerical forecasting, which uses mathematical equations to predict the weather, because numerical forecasting involves a powerful computers as well as observational data taken from land, sea and air. However, a just one weather station cannot be enough to gather much information therefore alot of stations across the globe are joined together and their data pooled. However a normal computer would give on all of this datas.
There are alot of tools used by Meteorologists to gather information together about weather and climate. Examples are;
1) thermometers which is instruments use to measure air temperature.
2)anemometers which helps in gauging wind speeds,
4) barometers which helps in provideing information on air pressure.