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Biology Test 1 Review - Chapters 1, 3, 4, 5
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Biology Test 1 Review - Chapters 1, 3, 4, 5

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Questions and Answers

A response is an organism's reaction to _____

stimulus

All animals are:

  • Multicellular
  • Prokaryotes
  • Both A and C are correct (correct)
  • Eukaryotes
  • Organisms that acquire energy from other organisms are called?

    heterotrophs

    In multicellular organisms, organs are composed of different _____ and organized into _____

    <p>tissues, organ systems</p> Signup and view all the answers

    What substance carries hereditary information in cells?

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

    What substance carries energy to maintain cellular life?

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

    The maintenance of conditions (like temperature and water content) inside a living organism is called _____

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

    What are changes in the DNA of an organism called?

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

    What is the theory that species change over time called?

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

    Organisms whose cells have a membrane-bound nucleus are called?

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

    In the binomial name, Trypanosoma brucei, what does the first term refer to?

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

    Polysaccharides are long-chain polymers of _____

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

    Which of the following organic molecules are composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio?

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

    Fructose is a:

    <p>Component of sucrose</p> Signup and view all the answers

    What are disaccharides?

    <p>Two monosaccharide units linked by the loss of water</p> Signup and view all the answers

    The hydrolysis of carbohydrates results in the production of?

    <p>simple sugars</p> Signup and view all the answers

    Animal carbohydrates are stored in the form of?

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

    Fats and oils are constructed from?

    <p>Glycerol and fatty acids</p> Signup and view all the answers

    The term lipid is applied to?

    <p>Fats and steroids</p> Signup and view all the answers

    Lipids catalyze biochemical reactions of synthesis and hydrolysis.

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

    Proteins are polymers of?

    <p>amino acids</p> Signup and view all the answers

    Proteins form the genetic code with DNA and RNA.

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

    A distinguishing feature of amino acids is that they always contain?

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

    The denaturation of a protein is caused by heat or heavy metal ions.

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

    If a cell manufactures a protein, this protein might be used as?

    <p>Any of these choices</p> Signup and view all the answers

    Study Notes

    Characteristics of Living Things (Chapter 1)

    • A response indicates how an organism reacts to a stimulus.
    • All animals are classified as eukaryotes and multicellular organisms.
    • Heterotrophs are organisms that obtain energy from other organisms.
    • In multicellular organisms, organs are formed from various tissues and are structured into organ systems.
    • Newly discovered species might be classified into orders within a broader class.
    • DNA stores hereditary information, while ATP is crucial for energy maintenance in cells.
    • Taxonomic hierarchy is organized as: Domain > Kingdom > Phylum > Class > Order > Family > Genus > Species.
    • Homeostasis refers to the regulation of internal conditions such as temperature and water balance.
    • Changes in an organism's DNA are termed mutations, which can impact the organism's traits.
    • The concept of evolution describes how species change over time, not individuals.
    • Eukaryotes are characterized by having cells with a membrane-bound nucleus.
    • In the binomial nomenclature Trypanosoma brucei, the first term refers to genus, and the second term denotes species.

    Biochemistry (Organic Molecules - Chapter 3)

    • Polysaccharides like starch, glycogen, and cellulose are long polymers made from glucose.
    • Monosaccharides are organic molecules consisting of carbon, hydrogen, and oxygen in a 1:2:1 ratio.
    • Fructose is a component of sucrose, while disaccharides consist of two linked monosaccharide units via dehydration.
    • Hydrolysis of carbohydrates yields simple sugars as products.
    • Animals store carbohydrates mainly as glycogen.
    • Fats and oils are comprised of glycerol and fatty acids.
    • The term lipid includes substances such as fats and steroids, but lipids do not catalyze biochemical reactions, unlike enzymes.
    • Proteins are formed from amino acids, which are fundamental for many cellular processes.
    • Not all functions of proteins include forming the genetic code; they mainly play roles in structure, enzymatic reactions, and regulation.
    • A unique aspect of amino acids is the presence of nitrogen.
    • Denaturation of proteins can occur due to heat or heavy metal ions and might not always be reversible.
    • A synthesizing cell can use proteins as enzymes, hormones, or structural materials, showing their versatile nature.

    Importance of Water

    • Water's necessity in the body stems from its myriad of functions, including acting as a solvent, temperature regulator, and participant in metabolic reactions.

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    Related Documents

    Test 1 Reviewer.docx

    Description

    Prepare for Test 1 by reviewing key concepts from lectures and chapters covering the characteristics of living things, biochemistry, cell structure, and plasma membrane transport. This quiz includes questions based on self-study units and textbook readings from Weeks 2 to 5. Ensure you're well-versed in the material to excel in your upcoming test.

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