Skip to content Home Questions Play Progress Daily Challenge Questions › Biology Questions QUESTION Around which year did Robert Brown publish a paper highlighting the presence of a nucleus in plant cells? Open question → QUESTION Which of the following is an inactivated (killed) polio vaccine developed in 1952? Open question → QUESTION Consider the following statements about the BCG vaccine: 1. It is used for protection against Malaria. 2. It was developed by Albert Calmette and… Open question → QUESTION Match the enzyme or protein in Column A with its role in DNA replication in Column B. Column A | Column B i. Helicase… Open question → QUESTION Insufficient levels of parathyroid hormone and low amount of calcium in the blood causes which of the following conditions? Open question → QUESTION Which of the following statements about enzymes in the human body is/are correct? Statement A: Maltase is present in the saliva and breaks the… Open question → QUESTION What is the function of cytochrome P450? Open question → QUESTION Consider the following statements: 1. Trypsin is a proteolytic enzyme secreted by the salivary gland in an inactive form called trypsinogen, which gets activated… Open question → QUESTION From the enzymes listed below, identify those that play a direct role in the process of DNA replication: 1. DNA polymerase 2. DNA ligase… Open question → QUESTION During DNA replication, which enzyme plays the key role in sealing the gaps between Okazaki fragments? Open question → QUESTION Consider the following statements regarding plant hormones: 1. Auxins help maintain apical dominance in plants. 2. Cytokinins speed up the ageing process in leaves.… Open question → QUESTION Which type of bioactive compound found in soybeans resembles human hormonal activity? Open question → QUESTION What is the main role of growth hormone in humans? Open question → QUESTION In the human digestive system, which substances act as biological catalysts to break down food molecules? Open question → QUESTION Which enzyme produced by the pancreas helps in the digestion of emulsified fats in humans? Open question → QUESTION In shoots showing positive phototropism, auxin brings about bending towards light by: Open question → QUESTION Read the following statements about enzymes and select the correct answer: 1. Enzymes raise the activation energy of chemical reactions. 2. The specificity of… Open question → QUESTION What is the primary function of the telomerase enzyme? Open question → QUESTION Identify the correct pairing between a plant hormone and its primary physiological function: Open question → QUESTION Identify the incorrect statement regarding the Gram staining technique for bacteria: Open question → QUESTION Which method mainly prevents microbial growth by reducing moisture content? Open question → QUESTION Why do single-celled organisms not require specific organs for intake of food, gas exchange, or removal of wastes? Open question → QUESTION The temporary, finger-like extensions of an Amoeba’s cell surface, used for movement and food intake, are called: Open question → QUESTION Which aquatic microorganisms eat phytoplankton and then become food for fish, crustaceans and other large species? Open question → Home Questions Play Progress 