Answer:
The central dogma of molecular biology (sometimes Crick's central dogma after Francis Crick who coined the term and discovered some of the principles) states that the flow of genetic information is "DNA to RNA to protein". With a few notable exceptions, all biological cells conform to this rule.
(courtesy groups.inf.ed.ac.uk, article Central dogma of molecular biology)
Answer:
D. Scintillation counter
Explanation:
DNA is usually labelled with radioactive phosphorus, which is a β emitter, so you need a device that can detect β particles.
A scintillation counter detects β particles because they emit a flash of light when they hit a phosphor. The device converts the flashes into electrical signals, amplifies then about a million times, and then counts them.
A, B, and C are wrong. They are all common laboratory equipment, but they can't detect radioactivity of any sort.
Answer:The target cells of neurons include other nerve cells in the brain, spinal cord, and autonomic ganglia, and the cells of muscles and glands throughout the body.
Explanation:please give braineest
The lands which are lef unuse after it is affected by environmental contamination.
<u>Explanation:</u>
- Brownfields are abandoned or unused fields where reuse is hindered by real or observed environmental contamination. The places may include localities destroyed by hazardous materials, petroleum or mine-scarred land.
- Brownfields are found in a city or town's manufacturing section, on areas with discontinued factories or industrial buildings, or other earlier contaminating operations like steel millhouses, refineries or landfills. It is mainly found in urban cities where there is normally a stronger potential to redevelop these localities.
- Some of the most frequent contaminants known at Brownfield sites are from fuels such as grease, propellant, diesel and kerosene from subterrene storage tanks, floor drains, External storage of barrels and machine, and cleaning solvents.
Answer:
1) The stage of mitosis in which the chromosomes move to opposite ends of the cell. >>>> Anaphase
2) forms the ends of the spindle fibers in the cell during mitosis.
>>>>>Centriole.
3) part of a chromosome that attaches to the spindle apparatus during mitosis or meiosis. >>>>>Centromere
4) a structure that forms across the middle of a higher plant cell in telophase; the beginning of a new cell wall which divides the two daughter cells from one another to finish mitosis. >>>>>Cell plate.
5) material in the cell nucleus that carries hereditary information; made up of DNA and various kinds of protein. >>>>>Chromatin.
