There are several types of microscopes: compound microscopes 0 the most commonly used microscope, uses light illumination and the image that is seen is two dimensional, stereoscope- uses light illumination and the image that appears is 3 dimensional, confocal microscope - uses laser light ,scanning electron microscope - uses electron illumination.
Answer:
Nervous system: This systems helps the five sense organs (eyes, ears, nose, tongue, skin) which all contain nerves that send messages to the brain about what is happening. The brain produces a response which it sends via other nerves to the muscles.
Digestive system: This system helps to break down food into simpler substances so it can be used and absorbed into the body. It takes place in the alimentary canal (food tube), mainly in the stomach and small intestine. The digested food is absorbed into the blood.
Respiratory System: This system helps take in oxygen and removing waste carbon dioxide. Air enters the lungs by movement of the rib muscles and diaphragm. The oxygen is absorbed into the blood.
Reproductive system: This helps produce offspring. Eggs are produces by ovaries in a female and the sperm is produced in the testes of a male. They then try and fertilise the eggs.
Note:
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Mutations can lead to changes in the structure of an encoded protein or to a decrease or complete loss in its expression. Because a change in the DNA sequence affects all copies of the encoded protein, mutations can be particularly damaging to a cell or organism.
Answer:
The correct match of terms with their descriptions are -
A. anaerobic respiration
B. pyruvate
C. Fermentation
D. aerobic respiration.
Explanation:
Anaerobic respiration is the process that involves the production of energy from sugar or carbohydrate in absence of oxygen.
Pyruvate is the intermediate product or substance of the various metabolic process including cellular respiration.
The chemical breakdown of the sugars is known as fermentation. It takes place due to the enzymatic reaction to change in the organic substance.
An aerobic respiration occurs in most eukaryotic organism in order to get energy by the breakdown of sugar or food in presence of the oxygen
Answer:
The option that is not part of the chromosomes is D. Many strands of RNA
Explanation:
Chromosomes can be described as structures made up of DNA that is coiled around proteins called histones. The genes are made up of NA and are present on the chromosomes. Each chromosome carries alleles of different genes. Hence, all other options A)A strand of DNA. B) A gene C) Many proteins are all part of a chromosome except for the option D)Many strands of RNA.
RNA is not a part of the chromosomes. The DNA is transcribed into RNA though.
