Cell Biology Basics
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Cell Biology Basics

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@GrandMars7849

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Questions and Answers

What is the primary function of the cell membrane?

  • To contain the cell's genetic material
  • To facilitate chemical reactions
  • To provide structure and support to the cell
  • To regulate what enters and leaves the cell (correct)
  • Which type of cellular transport requires energy?

  • Passive transport
  • Facilitated diffusion
  • Active transport (correct)
  • Osmosis
  • What is the basis of Mendel's Law of Segregation?

  • The dominance of one allele over another
  • The separation of alleles during gamete formation (correct)
  • The expression of traits in offspring
  • The combination of alleles from two parents
  • What is the result of meiosis?

    <p>Four non-identical daughter cells with half the number of chromosomes</p> Signup and view all the answers

    What is the shape of the DNA molecule?

    <p>Double helix</p> Signup and view all the answers

    What is the positive charge located in the nucleus of an atom?

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

    What type of bond involves the transfer of electrons?

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

    What is the term for a substance that increases the rate of a chemical reaction without being consumed?

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

    Study Notes

    Biology

    Cell Biology

    • Cell structure:
      • Cell membrane: semi-permeable membrane that controls what enters and leaves the cell
      • Cytoplasm: jelly-like substance inside the cell membrane where chemical reactions occur
      • Nucleus: contains DNA, controls cell growth and reproduction
    • Cellular transport:
      • Passive transport: diffusion, osmosis, facilitated diffusion
      • Active transport: uses energy to move molecules against concentration gradient
    • Cell division:
      • Mitosis: produces 2 identical daughter cells
      • Meiosis: produces 4 non-identical daughter cells with half the number of chromosomes

    Genetics

    • Mendel's laws:
      • Law of segregation: each pair of alleles separates during gamete formation
      • Law of independent assortment: alleles for different genes are sorted independently
    • Inheritance patterns:
      • Dominant and recessive alleles
      • Autosomal and sex-linked traits
    • DNA structure:
      • Double helix model
      • Nucleotides: A, C, G, and T

    Evolution

    • Theory of evolution:
      • Species change over time through natural selection and genetic variation
      • Fossil record and comparative anatomy provide evidence
    • Mechanisms of evolution:
      • Natural selection
      • Genetic drift
      • Mutation
      • Gene flow

    Chemistry

    Atomic Structure

    • Atomic models:
      • Rutherford's nuclear model
      • Bohr's energy level model
    • Subatomic particles:
      • Protons: positive charge, found in nucleus
      • Neutrons: no charge, found in nucleus
      • Electrons: negative charge, found in energy levels

    Chemical Bonding

    • Types of bonds:
      • Ionic bonds: transfer of electrons
      • Covalent bonds: sharing of electrons
    • Bonding theories:
      • Electronegativity
      • Valence shell electron pair repulsion (VSEPR)

    Chemical Reactions

    • Types of reactions:
      • Synthesis: combination of reactants
      • Decomposition: breakdown of reactants
      • Single displacement: one element replaces another
      • Double displacement: two elements exchange partners
    • Reaction rates:
      • Factors affecting reaction rate: concentration, temperature, surface area
      • Catalysts: substances that increase reaction rate without being consumed

    Biology

    Cell Biology

    • Cell membrane is semi-permeable, controlling what enters and leaves the cell.
    • Cytoplasm is a jelly-like substance inside the cell membrane where chemical reactions occur.
    • The nucleus contains DNA and controls cell growth and reproduction.
    • Cellular transport includes passive transport (diffusion, osmosis, facilitated diffusion) and active transport (uses energy to move molecules against concentration gradient).
    • Mitosis produces 2 identical daughter cells, while meiosis produces 4 non-identical daughter cells with half the number of chromosomes.

    Genetics

    • Mendel's Law of Segregation states that each pair of alleles separates during gamete formation.
    • Mendel's Law of Independent Assortment states that alleles for different genes are sorted independently.
    • Dominant and recessive alleles determine inheritance patterns.
    • Autosomal and sex-linked traits are types of inheritance patterns.
    • DNA structure follows the double helix model, with nucleotides A, C, G, and T.

    Evolution

    • The theory of evolution states that species change over time through natural selection and genetic variation.
    • Fossil record and comparative anatomy provide evidence for evolution.
    • Mechanisms of evolution include natural selection, genetic drift, mutation, and gene flow.

    Chemistry

    Atomic Structure

    • Rutherford's nuclear model and Bohr's energy level model describe atomic structure.
    • Protons have a positive charge and are found in the nucleus.
    • Neutrons have no charge and are found in the nucleus.
    • Electrons have a negative charge and are found in energy levels.

    Chemical Bonding

    • Ionic bonds involve the transfer of electrons.
    • Covalent bonds involve the sharing of electrons.
    • Electronegativity and valence shell electron pair repulsion (VSEPR) are bonding theories.

    Chemical Reactions

    • Synthesis reactions involve the combination of reactants.
    • Decomposition reactions involve the breakdown of reactants.
    • Single displacement reactions involve one element replacing another.
    • Double displacement reactions involve two elements exchanging partners.
    • Factors affecting reaction rate include concentration, temperature, and surface area.
    • Catalysts are substances that increase reaction rate without being consumed.

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    Description

    Test your knowledge of cell structure, cellular transport, and cell division in this biology quiz. Learn about the cell membrane, cytoplasm, nucleus, passive and active transport, and mitosis.

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