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Biology Section 14
- The blood vessel carrying blood from the lungs to the heart is the pulmonary vein.
- Infectious droplets do not transmit Rubella, the common cold, or influenza.
- There are 14 “True Ribs” in the human body.
- Transport of oxygen by blood takes place with the help of erythrocytes.
- Major biological issues today encompass human population growth, infectious diseases, addictive drugs, and pollution.
- Metabolism of photosynthesis and respiration involves the knowledge of biochemistry.
- The body part that can be repaired, replaced, or removed is done through surgery.
- Homologous chromosomes present in both males and females are known as autosomes.
- A chromosome with centromere near the middle is called a submetacentric chromosome.
- The X-chromosome is submetacentric in structure.
- The Y-chromosome is acrocentric in structure.
- A giant chromosome with multiple chromonemata is a polytene chromosome.
- A chromatid is one half of a chromosome.
- A dominant gene is expressed both in heterozygous and homozygous conditions.
- The laws of segregation and dominance were given by Mendel.
- The sum of genes in a population is referred to as the gene pool.
- When two opposite alleles come together, one masking the other’s expression, it’s the law of dominance.
- Blood does not clot in the blood vessels due to the presence of thrombin.
- Fats are stored in the human body’s adipose tissue.
- Insulin is secreted by beta cells.
- The medulla oblongata controls internal organ activities.
- When the left ventricle contracts, blood moves to the aorta.
- The food-conducting tissue of a plant is phloem.
- The haploid condition is found in the zygote.
- Phenotype is the physically appearing character in an animal.
- The frequency of a character increases when it is inheritable.
- Six nucleosomes are found in the 30 nm chromatin fiber’s helical coil.
- The seminiferous tubule cells may have fewer chromosomes than most body cells in mammals.
- Balbiani discovered special chromosomes recognized by both bands and loops.
- A functional unit gene is known as a cistron.
- Genetic information is carried in the form of nucleotides.
- Tjio and Levan gave the number of human chromosomes.
- Excretion eliminates toxic waste and excess water in the human body.
- The acid present in gastric juice is hydrochloric acid.
- The pelvis girdle connects the legs to the vertebral column.
- Carrots are a source of vitamin A.
- The pancreas serves as an endocrine and exocrine gland.
- Insulin secretion is attributed to beta cells.
- The medulla oblongata receives blood from the left ventricle.
- The food-conducting tissue in plants is phloem.
- The zygote is in the haploid condition.
- A gene is said to be recessive if it is expressed only in homozygous condition.
- Dominance and segregation were proposed by Mendel.
- Blood does not clot in the vessels due to thrombin.
- Fats are stored in adipose tissue.
- Beta cells secrete insulin.
- The medulla oblongata controls internal organ activities.
- When the left ventricle contracts, blood moves to the aorta.
- Phloem conducts food in plants.
- Phenotype refers to the physically appearing character in an animal.
- Dysentery is a disease causing severe diarrhea and inflammation in the colon.
- The “graveyard of RBCs” in the body is the spleen.
- The “Blood Bank” in the body is the spleen.
- The main use of salt in the diet is to produce a small amount of hydrochloric acid required for digestion.
- Typhoid is caused by the bacteria Salmonella typhi.
- Fresh yeast cells are a good source of Vitamin-B.
- The fungus known as “Green Mold” is Penicillium.
- Leprosy is caused by the bacillus discovered by Hansen.
- Phloem is the tissue in plants that conducts food.
- Fermentation takes place in the cytoplasm of a cell.
- MDT is used for the treatment of Leprosy.
- Oncogenes are responsible for causing cancer.
- “Black foot disease” can be caused by the pollutant As (Arsenic).
- Febries are cells of the sclerenchyma type.
- BCG immunization is for Tuberculosis.
- Pus is formed by dead White Blood Cells.
- Mathematical processes occur in the left parietal lobe of the brain.
- The carotid artery is located in the neck.
- The condition characterized by an inability to see in dim light or at night is Nyctalopia.
- Lalopathy means a disorder of speech.
- Food is ground in the gizzard of a cockroach.
- Operculum is present in bony fish.
- Blood from the right ventricle is pushed into the pulmonary trunk.
- Fertilization is the process in which a sperm joins with an egg.
- Cerebellum allows precise muscular movements.
- Plant cells have a Cell wall, which is absent in animal cells.
- There are five kingdoms of life.
- Amylase becomes denatured at an alkaline pH of 9.
- Deoxygenated blood is carried by veins.
- Prokaryotes lack a nucleus.
- The organelle absent in animal cells and present in plant cells is the Cell wall.
- Lysosomes do not contain DNA.
- The first part of the small intestine is the duodenum.
- Coughing while eating can be due to improper movement of the epiglottis.
- Gastrin stimulates the production of gastric juice in the stomach.
- Terrestrial plants carry out 10% of total photosynthesis.
- The pH of fresh saliva is 8.
- HIV is a single-stranded RNA virus.
- AIDS is caused by the HIV virus.
- Mendel studied seven traits of pea plants.
- Human skin color is polygenic.
- Morgan studied 85 traits of Drosophila.
- The father of genetics is Mendel.
- The link between living and non-living organisms is viruses.
- Skeletal muscles are the most abundant in humans.
- There are about 650 muscles in the human body.
- A single heart beat involves three stages.
- The heart beats about 2.8 billion times in one’s life.
- Organ rejection is caused by T-lymphocytes.
- Smallpox induces immunity.
- Blue-green algae can serve as a biofertilizer for rice crops.
- “Athlete’s Foot” is a disease caused by a fungus.
- Epiphytes are plants that depend on other plants for mechanical support.
- A line on a map connecting places that receive equal solar radiation is called an isohel.
- The pathogen that causes Acne is Propionibacterium.
- The process of egg formation in females is called oogenesis.