Biology Chapter on Chemistry and Homeostasis
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Biology Chapter on Chemistry and Homeostasis

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Questions and Answers

What is the primary characteristic of an anion?

  • It has a neutral charge.
  • It has a negative charge. (correct)
  • It has a positive charge.
  • It cannot participate in chemical reactions.

    • Which of the following is a characteristic of connective tissue?

  • It contains a large amount of extracellular matrix. (correct)
  • It forms the outer layer of skin.
  • It is composed primarily of tightly packed cells.
  • It has no blood supply.

    • What defines homeostasis in the body?

  • The reproductive processes in organisms.
  • The process of cellular differentiation.
  • The growth of tissues and organs.
  • The ability to maintain a stable internal environment. (correct)

    • Which type of feedback system enhances the original stimulus?

    <p>Positive feedback.</p> Signup and view all the answers

    What are the four major organic compounds in the body?

    <p>Lipids, carbohydrates, proteins, nucleic acids.</p> Signup and view all the answers

    What is the role of enzymes in chemical reactions?

    <p>They lower the activation energy, speeding up reactions.</p> Signup and view all the answers

    What distinguishes endocrine glands from exocrine glands?

    <p>Endocrine glands secrete hormones directly into the bloodstream.</p> Signup and view all the answers

    Which type of chemical bond involves the sharing of electron pairs between atoms?

    <p>Covalent bond.</p> Signup and view all the answers

    What term describes the basic life process involving an increase in cell size and number?

    <p>Growth</p> Signup and view all the answers

    Which of the following components is NOT part of a feedback system?

    <p>Regulator</p> Signup and view all the answers

    Which chemical bond is characterized by the transfer of electrons from one atom to another?

    <p>Ionic bond</p> Signup and view all the answers

    What distinguishes anionic compounds from cationic compounds?

    <p>Anions have a negative charge while cations have a positive charge.</p> Signup and view all the answers

    Which layer of the skin contains hair follicles and sweat glands?

    <p>Dermis</p> Signup and view all the answers

    Which characteristic is NOT typically associated with connective tissue?

    <p>Highly cellular with minimal extracellular matrix</p> Signup and view all the answers

    What is an example of a reversible chemical reaction?

    <p>Synthesis</p> Signup and view all the answers

    Which of the following is NOT a type of epithelial tissue based on layers?

    <p>Squamous</p> Signup and view all the answers

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