Bio chap-1 (part 1)

    Master this deck with 23 terms through effective study methods.

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    Created by @bc9

    What defines life processes?

    They maintain order and prevent breakdown in living organisms.

    Why is visible movement not a reliable indicator of life?

    Some living things do not show visible movement yet are alive.

    What is the role of nutrition in living organisms?

    It provides energy and raw materials for growth and maintenance.

    How do autotrophs obtain energy?

    Through photosynthesis using sunlight, carbon dioxide, and water.

    What distinguishes autotrophs from heterotrophs?

    Autotrophs produce their own food, while heterotrophs consume others.

    What is respiration in living organisms?

    The process of breaking down food to release energy using oxygen.

    Why is diffusion insufficient for oxygen transport in multicellular organisms?

    Not all cells are in direct contact with the environment.

    What is excretion?

    The removal of waste products from the body to maintain homeostasis.

    What happens during photosynthesis?

    Light energy is converted into chemical energy stored as carbohydrates.

    What is the function of stomata in plants?

    They facilitate gas exchange for photosynthesis and respiration.

    What is heterotrophic nutrition?

    Organisms obtain nutrients from other organic sources.

    How do fungi obtain nutrition?

    They break down food outside their bodies before absorption.

    What distinguishes parasitic nutrition from other types?

    It derives nutrients without killing the host organism.

    How do single-celled organisms take in food?

    They absorb food through their entire surface.

    What role do enzymes play in digestion?

    They catalyze the breakdown of complex molecules into simpler ones.

    What is the function of salivary amylase?

    It breaks down starch into simple sugars.

    What happens to food in the stomach?

    It is mixed with digestive juices and broken down further.

    Why is hydrochloric acid important in the stomach?

    It creates an acidic environment for enzyme activity.

    How does the length of the small intestine vary among animals?

    It depends on the type of food they consume.

    What is the role of bile in digestion?

    It emulsifies fats to increase enzyme efficiency.

    What are villi and their function?

    Finger-like projections that increase surface area for absorption.

    What happens to unabsorbed food in the large intestine?

    Water is absorbed, and waste is prepared for excretion.

    What causes dental caries?

    Bacteria produce acids that demineralize tooth enamel.