• 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
• 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 are 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.
• 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