Biology Section 13

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• Dorsal root of spinal nerves contains receptor neurons.
• The study of interaction between living organisms and their environment relates to Ecology.
• Anoxia is a condition characterized by an absence of oxygen supply to an organ’s tissues.
• Viruses are acellular.
• The time an organism is present in the body before causing disease is the incubation period.
• Insects responsible for transmitting diseases are called vectors.
• The first cloned animal was a sheep.
• Chromosomes are carriers of genetic information.
• There are zero carpels in our feet.
• Oxygen production occurs in chloroplasts.
• Reproduction of new plants through cells instead of seeds is known as tissue culture.
• Cardiorespiratory capacity is related to normal physical endurance.
• Ultra Microscopic viruses are the main cause of mumps.
• Bacteria passing through the placenta is NOT an example of microbial symbiosis.
• Nucleo-proteins have a role in heredity.
• Deficiency of vitamin C leads to scurvy.
• Coelom is divided into septa in the case of annelids.
• Haemoglobin is dissolved in the blood of earthworms.
• Coenzymes can be used again and again.
• Carbon monoxide readily combines with the haemoglobin of the blood.
• Marasmus is a disease caused by deficiency of protein in children.
• Oxyntic cells secrete hydrochloric acid in the stomach
• Movement of a cell against the concentration gradient is called Active Transport.
• Human blood is a viscous fluid due to the proteins present in it.
• Marasmus is caused by protein deficiency in children.
• Oxyntic cells secrete hydrochloric acid in the stomach.
• Active transport is the movement of cells against the concentration gradient.
• Proteins in the blood make it viscous.
• Approximately 73% of water is present in the human brain.
• Ureters join the kidneys and the bladder.
• CCK hormone is stimulated by fats and proteins.
• Dogs mostly show Type 1 diabetes mellitus.
• Cats mostly show Type 2 diabetes mellitus.
• Glut 4 receptors are insulin-dependent.
• Cortisol, adrenaline, and ACTH are stress-indicating hormones.
• Anti-inflammatory medicines possess properties of anti-inflammation, immuno suppression, and anti-pyretic actions.
• Linnaeus published the list of plant names in 1753.
• Bats are mammals that can fly.
• Dolphins are highly intelligent mammals.
• The scientific name of onion is Allium cepa.
• Non-flowering plants are also called coniferous plants.
• SARS-CoV-2 has caused thousands of deaths globally as an ’emergent’ virus.
• Lead (Pb) is extensively present in newspapers as a toxic metal.
• Hydra is a diploblastic organism.
• New alleles can be introduced into a population’s gene pool through mutation and gene flow.
• The estimated number of alveoli in human lungs is around 500 million.
• Smooth muscles, cardiac muscles, and glands are regulated by the autonomous nervous system.
• Kranz anatomy is a characteristic feature of C4 plants.
• Harmful noise pollution occurs when sound levels are above 80 decibels.
• An average adult has 20 primary teeth or milk teeth.
• Half a liter of saliva is produced by a human on average.
• The gall bladder is part of the digestive system.
• “Bio” means life.
• Gross profit is the sum of the cost of goods sold and gross profit.
• Aristotle is commonly known as “the Father of Biology.”
• Keratin is a type of protein found in nails.
• Genomic mapping includes two types: linkage mapping and physical mapping.
• Exonucleases remove nucleotides from the ends of DNA or RNA.
• The hepatic portal vein drains blood to the liver from the intestine.
• A whale has two separate circulatory pathways.
• Serum lacks clotting factors compared to blood.
• Muscle fatigue occurs due to the accumulation of lactic acid.
• An increase in the heart rate is termed as tachycardia.
• A decrease in the heart rate is called bradycardia.
• All cells of an organism share a fundamental organization.
• Cotton, wool, and silk are examples of natural fibers.
• The pineal gland is situated in the brain.
• The father of Microbiology is Antonie van Leeuwenhoek.
• Chlorophyll is a type of chelate compound where the central metal is magnesium.
• The skull contains 22 bones.
• The average adult pulse rate is 72-80 beats per minute.
• The smallest bone in the human body is the stapes.
• Harmful gases are produced by motor vehicles.
• Programmed death of cells is called apoptosis.
• Crossing over was first observed in 1911.
• The term “allele” was coined by Bitson.
• Wilkins’ X-ray diffraction showed the DNA helix diameter as 20A.
• The term “gene” was first used by Johannsen.
• Steroids are derived from cholesterol.
• The selective destruction/recycling of RBCs by macrophages occurs in the spleen.
• Banana belongs to the herb category.
• Mastectomy is mainly associated with breast cancer.
• Homeopathy was introduced by Samuel Hahnemann in 1796.
• The skull contains 22 bones.
• Genes are made up of polynucleotides.
• The function of chromosomes carrying genetic information is performed by DNA.
• In chromosomes, the material controlling heredity is DNA.
• The term “gene” refers to a portion of DNA.
• Nobel prizes were given to Kornberg and Ochoa for artificial synthesis of DNA.
• In onions, food is stored in scale leaves.
• Entamoeba histolytica is a parasite found in the intestines.
• The membrane covering the lungs is pleura.
• Glucose is the form of carbohydrate synthesized in plants.
• An adult human has 12 molar teeth.
• Humans inhale half a liter of saliva.
• The gall bladder is part of the digestive system.
• “Bio” means life.
• Sales is a sum of the cost of goods sold and gross profit.
• Aristotle is commonly known as “the Father of Biology.”