Answer:
In most cells, DNA directs the production of a molecule of mRNA which then enters a ribosome. The ribosome produces the final product, a protein. Retroviruses do the opposite. They use the enzyme reverse transcriptase to use a template of mRNA to produce DNA.
Explanation:
The central dogma of molecular biology describes how a cell uses its genetic information to synthesize a protein. The first step called 'transcription' consists of using an RNA polymerase enzyme and a fragment of DNA (i.e., gene) as a template to synthesize an RNA molecule, usually a messenger RNA (mRNA). Subsequently, the genetic code in the mRNA sequence is read by the ribosomes in order to produce a protein, a process known as 'translation'. Retroviruses are viruses that have the ability to integrate into the host genome by using a reverse transcriptase enzyme that allows reverse transcription of mRNA to complementary DNA, which then integrates into the host's genome.
Answer:
Option (C).
Explanation:
Vitamins may be defined as the substance that are required in a in a minute amount in the body. Their deficiency may cause disease in the organism. Two main types of vitamins are water soluble vitamin and fat soluble vitamin.
Water soluble vitamin are the vitamins that are easily dissolved in our body and can easily be excreted from the body through the urine. These vitamins can be easily leaches out from the food. The water soluble vitamin can not be stored in body tissue for the large extent of time.
Thus, the correct answer is option (C).
Answer:
the higher the frequency and the higher amplitude, the more energy there is.
Explanation:
waves carry energy uh The higher the frequency, the shorter the wavelength. The relationship between wavelength and frequency is called an inverse relationship, because as the frequency increases, the wavelength decreases.
The following types of changes that can happen in the rock cycle:
- igneous rock to sedimentary rock
- igneous to metamorphic
- sedimentary rock to to metamorphic
- metamorphic to sedimentary
