Science Group
Explore subjects and practice MCQs
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Total MCQs
Science Group
Answer: Anabolic reactions build molecules and therefore require an input of energy.
Answer: ATP releases energy when its terminal high-energy phosphate bond is broken.
Answer: In fermentation, such as alcoholic fermentation in yeast, CO2 is released without any oxygen being used.
Answer: Animals release carbon dioxide as a waste product of cellular respiration.
Answer: Enzymes lower the activation energy needed, so reactions occur much faster.
Answer: Glucose is the main respiratory substrate that is broken down to release energy in cells.
Answer: The active site of an enzyme fits only a particular substrate, so each enzyme is specific.
Answer: Aerobic respiration yields about 36 to 38 ATP while fermentation yields only 2 ATP per glucose.
Answer: Minerals are needed for growth, enzyme function and various metabolic activities of plants.
Answer: Temperature, pH and substrate concentration all influence how fast an enzyme works.
Answer: Plants absorb minerals dissolved in water from the soil through their roots.
Answer: Human enzymes work best at the normal body temperature of about 37 degree Celsius.
Answer: NADP+ is reduced by accepting H+ and electrons to form NADPH in the light reaction.
Answer: Energy released from breaking down food is used to synthesize ATP, which stores it temporarily.
Answer: Green plants make their own food by photosynthesis, so they are autotrophs.
Answer: These are the main factors that affect the rate of photosynthesis.
Answer: Fungi and animals cannot make their own food and depend on other organisms, so they are heterotrophs.
1298
Answer: Oxygen accepts electrons and H+ to form water, the final product of the electron transport chain.
Answer: Plants use carbon dioxide and water in the presence of light and chlorophyll to make glucose.
Answer: The diaphragm contracts and relaxes to change the volume of the chest cavity during breathing.