1. Which scientist proposed the chromosome theory of inheritance, suggesting that genes are located on chromosomes? a. Gregor Mendelb. Thomas Hunt Morganc. Alfred Russel Wallaced. Jean-Baptiste Lamarck Answer: b. Thomas Hunt Morgan 2. During which stage of the cell cycle does crossing over occur, promoting genetic recombination? a. Prophase I of meiosisb. Metaphase II of…
1. Which gland is known as the master gland and controls the functions of other endocrine glands? a. Thyroid glandb. Adrenal glandc. Pituitary glandd. Pancreas Answer: c. Pituitary gland 2. Insulin is produced by which organ in the human body? a. Liverb. Pancreasc. Kidneyd. Thyroid Answer: b. Pancreas 3. Which hormone is responsible for regulating…
1. Who is credited with the discovery of cells using a simple microscope? a. Robert Hookeb. Anton van Leeuwenhoekc. Robert Brownd. Matthias Schleiden Answer: a. Robert Hooke 2. Which of the following is a characteristic feature of prokaryotic cells? a. Nucleusb. Membrane-bound organellesc. Linear DNAd. Cell wall Answer: d. Cell wall 3. What cellular structure…
1. During which phase of the cell cycle does DNA replication occur? a. G1 phaseb. S phasec. G2 phased. M phase Answer: b. S phase 2. What is the correct sequence of stages in mitosis? a. Prophase, Metaphase, Anaphase, Telophaseb. Metaphase, Prophase, Anaphase, Telophasec. Telophase, Anaphase, Prophase, Metaphased. Anaphase, Telophase, Metaphase, Prophase Answer: a. Prophase,…
1. Which of the following is a monosaccharide? a. Sucroseb. Glucosec. Lactosed. Maltose Answer: b. Glucose 2. What is the general formula for monosaccharides? a. CnH2nOnb. CnH2nO2c. CnH2n-1Od. CnH2n+1O6 Answer: a. CnH2nOn 3. Which polysaccharide is stored in the liver and muscles of animals as a source of energy? a. Celluloseb. Starchc. Glycogend. Chitin Answer:…
1. What is the primary function of the respiratory system in humans? a. Transportation of nutrientsb. Gas exchangec. Circulation of bloodd. Synthesis of hormones Answer: b. Gas exchange 2. Which respiratory structure in humans is responsible for the exchange of gases between the air and the blood? a. Alveolib. Bronchic. Trachead. Larynx Answer: a. Alveoli…
1. What is the fluid component of blood that contains water, electrolytes, proteins, and hormones? a. Plasmab. Serumc. Lymphd. Erythrocytes Answer: a. Plasma 2. Which of the following is responsible for the clotting of blood during wound healing? a. Plateletsb. Erythrocytesc. Leukocytesd. Plasma Answer: a. Platelets 3. What is the primary function of hemoglobin in…
1. What is the primary goal of recombinant DNA technology in biotechnology? a. Cloning extinct speciesb. Producing genetically modified organismsc. Enhancing natural selectiond. Studying fossils Answer: b. Producing genetically modified organisms 2. Which enzyme is commonly used to cut DNA at specific sequences during recombinant DNA technology? a. RNA polymeraseb. DNA ligasec. Restriction enzymed. DNA…
1. Which biomolecule is the primary source of energy for living organisms? a. Proteinsb. Carbohydratesc. Lipidsd. Nucleic acids Answer: b. Carbohydrates 2. What is the monomer unit of proteins? a. Nucleotideb. Amino acidc. Monosaccharided. Fatty acid Answer: b. Amino acid 3. Which biomolecule is composed of nucleotides and carries genetic information? a. Proteinsb. Carbohydratesc. Lipidsd….
1. What is the primary criterion used for the classification of living organisms into different kingdoms? a. Reproductive modeb. Presence of cell wallsc. Mode of nutritiond. Genetic similarities Answer: c. Mode of nutrition 2. Which taxonomic category is broader than class but narrower than phylum in the hierarchy of biological classification? a. Orderb. Familyc. Genusd….
