Biology Photosynthesis and Respiration Quiz
24 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are the main products of cellular respiration?

  • Oxygen and glucose
  • Water and alcohol
  • Water and carbon dioxide (correct)
  • Carbon dioxide and glucose

    • Which stage of cellular respiration does not occur in the mitochondria?

  • Fusion stage
  • Krebs cycle
  • Glycolysis (correct)
  • Electron transport chain

    • What is the role of NADP+ in cellular respiration?

  • It provides oxygen to the electron transport chain.
  • It breaks down glucose molecules.
  • It converts pyruvic acid to lactic acid.
  • It acts as an electron carrier. (correct)

    • What happens to the products of the Krebs Cycle after they are formed?

    <p>ATP is used immediately and carbon dioxide is exhaled.</p> Signup and view all the answers

    Which of the following describes lactic acid fermentation?

    <p>It converts pyruvic acid into lactic acid and ATP.</p> Signup and view all the answers

    What is the primary function of glycolysis in cellular respiration?

    <p>To split glucose into two pyruvic acid molecules.</p> Signup and view all the answers

    What does the Bromothymol Blue exercise lab indicate?

    <p>More carbon dioxide is released during intense exercise.</p> Signup and view all the answers

    The electron transport chain primarily occurs in which part of the cell?

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

    What do autotrophs do?

    <p>Make their own food</p> Signup and view all the answers

    Which of the following is NOT a reactant in the photosynthesis equation?

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

    Through which structures do carbon dioxide and water enter the plant?

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

    Which factor can increase the rate of photosynthesis?

    <p>High carbon dioxide levels</p> Signup and view all the answers

    What role do pigments play in photosynthesis?

    <p>They absorb different wavelengths of light</p> Signup and view all the answers

    What happens to water in the light reactions of photosynthesis?

    <p>It is released as oxygen</p> Signup and view all the answers

    Which part of the chloroplast is responsible for the light reactions?

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

    How do guard cells function to help plants conserve water?

    <p>They close stomata when water is scarce</p> Signup and view all the answers

    What defines a heterozygous genotype?

    <p>Having two different alleles.</p> Signup and view all the answers

    Which outcome is expected for a phenotype if a genotype has a homozygous recessive pair of alleles?

    <p>The recessive trait will express.</p> Signup and view all the answers

    How does incomplete dominance differ from co-dominance?

    <p>Incomplete dominance produces an intermediate phenotype, co-dominance shows both traits distinctly.</p> Signup and view all the answers

    What impact do seasonal changes have on atmospheric CO2 levels?

    <p>They decrease photosynthesis, leading to changes in CO2 levels.</p> Signup and view all the answers

    Which of the following correctly describes a karyotype?

    <p>A set of chromosomes that provides genetic information about an organism.</p> Signup and view all the answers

    What does a diploid number such as 2N=8 signify in terms of chromosomes?

    <p>There are 2 chromosomes from each parent, totaling 8.</p> Signup and view all the answers

    What is the role of the electron transport chain in ATP synthesis?

    <p>It transports protons across a membrane to generate a proton gradient.</p> Signup and view all the answers

    In a Punnett square, how can genotype ratios be determined?

    <p>By calculating the ratio of different genotype pairings from the squares.</p> Signup and view all the answers

    Study Notes

    Photosynthesis

    • Autotrophs make their own food, heterotrophs obtain energy from consuming food
    • 6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂ (reactants: water, carbon dioxide; products: glucose, oxygen)
    • Carbon dioxide and water are obtained from stomata
    • Oxygen is released through stomata, glucose stored for food
    • Factors affecting photosynthesis rate: sunlight, water intake rate, and carbon dioxide intake rate

    Photosynthesis (con't)

    • Guard cells swell with water, allowing transpiration through stomata; when no water, guard cells shrivel, closing stomata to conserve water
    • Chloroplast pigments absorb light at different wavelengths
    • Light reactions occur in thylakoid, dark reactions in stroma
    • Light reaction reactants: water; products: oxygen
    • Dark reaction reactants: carbon dioxide; products: glucose

    Cellular Respiration

    • Photosynthesis and cellular respiration are opposite processes, fueling each other
    • Oxygen + glucose → water + carbon dioxide
    • Glycolysis: glucose broken down to pyruvic acid
    • Krebs cycle: pyruvic acid converted to carbon dioxide
    • Electron transport chain: hydrogen atoms collected; NADP+ → NADPH; ADP → ATP
    • NAD+ carries hydrogen ions to become NADH
    • Types of fermentation: alcohol and lactic acid fermentation

    Cellular Respiration (con't)

    • Alcohol fermentation: pyruvic acid → alcohol + carbon dioxide + ATP
    • Lactic acid fermentation: pyruvic acid → lactic acid + ATP
    • Bromothymol blue exercise lab shows increased carbon dioxide release with intense bodily exercise

    Genetics (Ch. 11)

    • Dominant allele phenotype expressed if present
    • Recessive allele phenotype expressed only if homozygous
    • Homozygous: two of the same allele
    • Heterozygous: two different alleles
    • Determining genotypic and phenotypic ratios/percentages is important for understanding probabilities
    • Incomplete dominance: phenotype between two traits
    • Co-dominance: both traits present in phenotype

    Genetics (Ch. 11) (con't)

    • Punnett squares solve genetic problems, including sex-linked traits (XX-females, XY-males)
    • Pedigrees show family relationships, genotypes determined based on pedigree structure
    • Blood types (IA, IB, i) produce four phenotypes (A, B, O, AB)

    Karyotypes

    • Karyotype is a set of chromosomes, showing organism's genetic information
    • Used to determine sex-linked traits and other genetic information

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    UNIT 2: PHOTOSYNTHESIS AND RESPIRATION PDF

    Description

    Test your understanding of the processes of photosynthesis and cellular respiration. This quiz covers key concepts such as the equations for both processes, roles of autotrophs and heterotrophs, and factors affecting photosynthesis. Dive into the intriguing world of plant biology and energy transformation!

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser