GENE AND CELL
- The genetic material of chromatin is DNA
- Hereditary material is DNA
- Gender of a person is determined by 23rd chromosome
- Autosome are sex chromosome = 23
- Nucleus of human body cell contains about 20,000 genes, half of which being contributed by each parent
- Term gene was coined by Johannsen in 1909
- DNA = Deoxy ribose nucleic acid
- RNA = Ribose nucleic acid
- Histones are on chromosomes
- Chromosomes word was coined by Waldeyer in 1888
- Number of chromosomes in human being is 46
- Chromosomes in spermatozoa are 23
- Smallest part of a gene is Mutton
- Mitochondria are power house of cells
- Golgi bodies are involved in cell secretions
- Ribosome are rich in DNA and prepare protein
- Plastids are found in Plant cells only and contain chlorophyll
- Centrosomes help in cell division
- Proteins are synthesized by Golgi bodies.
- Cellulose respiration is done by Mitochondrion
- Light energy is stored in the form of chemical energy due to the
- activity of Chloroplast.
- Protoplasm is a colloidal solution.
- Most cells are microscopic but the egg cell of an ostrich is 15-20 cm long and some giraffe nerve cells reach more then 4 m long
- Mitochondria do work of cell respiration.
- The nucleus, mitocondria and chloroplast have double membranes
- Bacteria have no nucleus and no mitochondria they have just a single loop of DNA cell nucleoid as well as food granules and ribosome which produce proteins
- Each cell has the same set of about 30,000 genes.
- Genes are arranged along a long and thin thread-like structure called chromosomes.
- Snakes have 36 chromosomes, horse has 63 while some ferns have 500 or more
- Humans have a total of 46 chromosomes- 23 pairs in every cell. The only exception is sperm and egg cells, which have 23 unpaired chromosomes.
- Genes are made of a chemical called deoxyribonucleic acid or DNA
- DNA tells a cell how to make the proteins
- Every cell in a body contains at least 10,000 different kinds of proteins.
- The machinery for making these proteins is on structures called ribosome, which are outside the nucleus.
- RNA carries the instructions for making a particular protein to the ribosome.
- A permanent change to a piece of DNA is called a mutation.
- Nearly a third of a human being’s genes are the same as the genes of a lettuce.
- DNA is shaped like a twisted ladder called double helix. The rungs of the ladder are made up of four chemical building blocks Adenine, Guanine, Thymine, and Cytosine.
- Amoeba is a unicellular organism
- A structure present in all cells is called cell membrane
- The normal temperature of human body on the Kelvin scale is 310.
- ELISA is Enzyme Linked Immunosorbent Assay- for HIV/AIDS.
- Rh- blood is very rare compared to Rh+.
- The pancreatic duct releases its contents into duodenum.
- Right hepatic artery supplies nutrient rich blood from stomach and small intestine to the liver.
- Human cranium contains 6 bones.
- In the human body, spleen stores extra blood for release when shortage occurs.
- Mitochondria contain enzymes for cellular respirations.
- In the human body, rotator cuff muscle is to be found in the shoulder.
- Reproductive cells in normal human beings are produced in greater numbers for a longer period of time in the male
- Which vessels bring blood back to heart? Inferior venacava and Superior venacava bring blood back to heart from lower parts and upper parts of body respectively.
- Where in your body is your patella: Knee ( it’s the kneecap
- 80% of household dust is actually what material-Dead skin
- Babies are born without what-Knee Caps – form at 2-6 years
- In Nuclear DNA is concentrated in chromatin.
- Proteins are synthesized by golgi bodies.
- Cellulose respiration is done by Mitochondrion.
- Protoplasm is a colloidal solution.
- Man is Homoeothermic.
- Hydrosis is the medical term for what -Sweating
- An IVP is used to detect what medical condition- Kidney Stones- Intravenuspylorigram
- What part of the body ages the fastest-The Hands
- In medicine what is nicknamed a blue pipe-A Vein
- What is the name of the cranial bone just above your ear Temporal
- What is the name of the scale measuring depth of coma (GCS)-Glasgow Coma Scale
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