Anatomy & Physiology for Paramedics I Quiz

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Questions and Answers

Which of the following are the four classes of large biomolecules?

  • Lipids, Nucleic Acids, Carbohydrates, Sugars
  • Lipids, Nucleic Acids, Carbohydrates, Vitamins
  • Lipids, Nucleic Acids, Minerals, Proteins
  • Lipids, Nucleic Acids, Carbohydrates, Proteins (correct)

What is the name of the process that breaks down macromolecules and releases energy?

Catabolism

What type of chemical bond is formed between amino acids, and what is the name of the resulting polymer?

A peptide bond, a polypeptide

The building blocks of carbohydrates are called ______

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

What is the name of the storage polysaccharide in humans?

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

What are the three major types of lipids?

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

The major macromolecules are mostly ______

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

Cellulose is a structural polysaccharide found in humans.

<p>False (B)</p> Signup and view all the answers

What is the monomer that makes up nucleic acids?

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

What are the two main types of nucleic acids?

<p>DNA and RNA (C)</p> Signup and view all the answers

DNA is a single stranded molecule.

<p>False (B)</p> Signup and view all the answers

What are the four nitrogenous bases found in DNA?

<p>Adenine, guanine, cytosine, thymine</p> Signup and view all the answers

What is the primary function of ATP in cells?

<p>Energy storage and transfer</p> Signup and view all the answers

What is the name of the process that converts glucose into energy in the form of ATP?

<p>Cellular respiration</p> Signup and view all the answers

What are the four main functions of the digestive system?

<p>Move food, secrete juices, absorb nutrients, circulate blood</p> Signup and view all the answers

What type of digestion involves breaking down food into smaller pieces without changing its chemical composition?

<p>Mechanical digestion (D)</p> Signup and view all the answers

What type of digestion involves the use of enzymes to break down food molecules into smaller units?

<p>Chemical digestion</p> Signup and view all the answers

The enzyme secreted by the salivary glands that breaks down starch is called ______

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

What is the name of the flap of tissue at the upper part of the larynx that prevents food from entering the trachea?

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

What is the main function of the stomach?

<p>Storage and movement of food (A)</p> Signup and view all the answers

What is the name of the enzyme secreted by the stomach that breaks down proteins?

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

What is the main function of the liver in digestion?

<p>Produce bile (D)</p> Signup and view all the answers

The gallbladder stores and concentrates bile.

<p>True (A)</p> Signup and view all the answers

What is the name of the organ that secretes digestive enzymes like proteases, amylases, and lipases into the small intestine?

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

What are the three regions of the small intestine?

<p>Duodenum, jejunum, ileum</p> Signup and view all the answers

Which of the following is NOT a function of the large intestine?

<p>Digestion of proteins (B)</p> Signup and view all the answers

The anus is a terminal opening of the anal canal.

<p>True (A)</p> Signup and view all the answers

The process where the movement of nutrients, salts, and water from the GI tract into the bloodstream is called ______

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

What is the name of the wave-like muscle contractions that move food along the digestive tract?

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

What are the two types of movement in the stomach?

<p>Peristalsis and churning (B)</p> Signup and view all the answers

The stomach only performs mechanical digestion.

<p>False (B)</p> Signup and view all the answers

What are the three main types of digestion that occur in the small intestine?

<p>Carbohydrate digestion, protein digestion, lipid digestion</p> Signup and view all the answers

What are the two main mechanisms of nutrient absorption in the small intestine?

<p>Diffusion, active transport</p> Signup and view all the answers

The presence of high fiber in the diet can promote constipation.

<p>False (B)</p> Signup and view all the answers

Which of the following is a potential consequence of a weak lower esophageal sphincter?

<p>Heartburn (D)</p> Signup and view all the answers

Flashcards

Biomolecules

Large molecules essential for life, categorized into four main classes: lipids, nucleic acids, carbohydrates, and proteins.

Lipids

A diverse group of hydrophobic molecules, including fats, phospholipids, and steroids, with functions in energy storage, insulation, cell membrane formation, and hormonal activity.

Nucleic Acids

Large polymers responsible for encoding and transmitting genetic information, composed of nucleotides.

Carbohydrates

Sugars and starches, serving as a primary energy source for cells and also providing structural support.

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Proteins

Complex polymers made from amino acids, involved in a wide variety of cellular functions, including structural support, enzyme catalysis, transport, and communication.

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Monomers

Small, simple molecules that serve as repeating units to build larger polymers.

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Polymers

Large, complex molecules formed by linking together multiple monomers.

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Fats

Lipids composed of glycerol and fatty acid chains, primarily used for energy storage, insulation, and organ protection.

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Fatty Acids

Monomers of fats, long chains of hydrocarbons, either saturated or unsaturated.

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Saturated Fatty Acids

Fatty acids with all single bonds between carbon atoms, usually solid at room temperature.

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Unsaturated Fatty Acids

Fatty acids with at least one double bond between carbon atoms, usually liquid at room temperature.

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Glycerol

A three-carbon molecule that serves as the backbone for fats and phospholipids.

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Triglycerides

Fats composed of glycerol linked to three fatty acid chains, serving as a major energy storage form.

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Phospholipids

Amphipathic lipids with a hydrophilic head and hydrophobic tails, forming the basis of cell membranes.

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Steroids

Lipids characterized by a four-fused ring structure, including cholesterol and hormones.

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Cellulose

Structural polysaccharide found in the cell walls of plants, providing support and rigidity.

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Starch

Storage polysaccharide in plants, providing a readily accessible energy source.

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Glycogen

Storage polysaccharide in animals, mainly in the liver and muscles, providing a readily available energy source.

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Monosaccharides

Simple sugars, monomers of carbohydrates, such as glucose, fructose, and galactose.

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Disaccharides

Intermediate carbohydrates formed by linking two monosaccharides together, such as sucrose, lactose, and maltose.

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Polysaccharides

Large, complex carbohydrates formed by linking many monosaccharides together, including starch, glycogen, and cellulose.

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Amino Acids

Monomers of proteins, containing a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable R group.

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Peptide Bonds

Covalent bonds that link amino acids together to form polypeptide chains, the basis of proteins.

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Polypeptides

A chain of amino acids linked by peptide bonds, forming the primary structure of proteins.

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Primary Structure

The unique linear sequence of amino acids in a polypeptide chain, determining the protein's overall structure and function.

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Secondary Structure

The folding and coiling of sections of a polypeptide chain, resulting from hydrogen bonds between backbone atoms.

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Tertiary Structure

The three-dimensional shape of a single polypeptide chain, determined by interactions between R groups and the surrounding environment.

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Quaternary Structure

The arrangement of multiple polypeptide chains in a protein, forming a functional protein unit.

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Enzymes

Proteins that catalyze (speed up) biochemical reactions in cells.

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Study Notes

Course Information

  • Course Title: Anatomy & Physiology for Paramedics I
  • Course Code: 101-127-AB 00001
  • Instructor: Samuel Richer
  • Institution: John Abbott CEGEP/COLLEGE

Instructor Contact Information

  • Pronouns: He/Him
  • Email: [email protected]
  • Office: AME-308
  • Office Hours:
    • Monday: 10:30 AM - 2:30 PM
    • Tuesday: 2:00 PM - 4:00 PM
    • Thursday: 12:30 PM - 2:30 PM
  • Other Contact Methods:
    • Appointment on Microsoft Teams
    • Zoom calls

Course Outline

  • Unit 1: Characteristics of Living Things, Homeostasis
  • Unit 2: Biomolecules & Cell Anatomy, Tissues
  • Unit 3: Neural Transmission & the Nervous System

Anonymous Feedback Form

  • Link: https://forms.gle/owpTi9TrhJZBxKpK7
  • Provide constructive feedback on teaching, lectures, slides, assignments, and tests.
  • Include questions such as: Does the instructor talk too fast? Are lectures too boring? Would you like more/fewer interactive activities?

Lecture 1: Atoms, Ions & Molecules - Learning Objectives

  • Define structural levels (atoms, molecules, organelles, cells, tissues, organs, systems).
  • Distinguish between atoms, molecules, and ions.
  • Identify ion behavior in solutions (electricity conductivity, water mix).
  • Describe the function of ions and molecules in the body.
  • List elements & symbols of major ions inside and between tissue cells.
  • Distinguish between intermolecular and intramolecular forces and types of covalent bonds (Polar & Nonpolar).
  • Distinguish between hydrophilic (covalent polar) and hydrophobic (covalent non-polar) biomolecules according to experimental data (mixing with water) and electron behavior (equal or unequal electron sharing).

Lecture 1: Atoms, Ions & Molecules - Additional Information

  • Laboratory: Preparation for Spinal Cord Lab Laboratory; Pre-Lab H5P.
  • Theory: Quiz on Wednesday, October 9th; Class Test Unit 1 on Wednesday, October 16th.

Lecture 1: Atoms, Ions & Molecules - Atomic Structure

  • Nucleus contains protons (positive charge) and neutrons (neutral charge).
  • Electrons (negative charge) orbit the nucleus.
  • Opposite charges attract.
  • The number of protons defines an element.
  • Atomic number equals the number of protons (most often equals number of electrons).

Lecture 2: Biomolecules

  • Carbohydrates, Proteins, Lipids, Nucleic Acids
  • All 4 classes of biomolecules are polymers, long chains of monomers.

Lecture 2: Biomolecules - Monomer & Polymers

  • Monomer: single unit of a polymer
  • Polymer: a chain of monomers.

Announcements - Laboratory

  • Post-Lab PDF is due Friday, October 25.
  • Read the Lab Manual for tissues lab.
  • Pre-Lab (2 separate H5P).
  • Prelab 4 week 2: tissue layers and epithelium H5P.
  • Prelab 4 week 2: connective tissue H5P.

Announcements - Theory

  • Assignment Problem set 1 & 2 (Due before Unit Test 2).
  • Peer-Tutoring Program Tutors

Lecture 2: Learning Objectives

  • Describe the structure and function of biomolecule classes.
  • Identify biomolecules in foods and in parts of cells.
  • Define monomer, intermediate, polymer.
  • Define types of monomers within biomolecule classes.
  • Describe the functional importance of biomolecules.
  • Discuss metabolic imbalances (hyperthermia, acidosis) and their effect on protein denaturation, and medical importance.

Hierarchy of Living Organisms

  • Atom (smallest unit of an element).
  • Molecule (two or more atoms held together).
  • Organelle (parts of the cell).
  • Cell (basic unit of life)
  • Tissue
  • Organ
  • Organ system
  • Organism

Carbohydrates

  • Monosaccharides (simple sugars): glucose, fructose, galactose.
  • Disaccharides (two monosaccharides bonded): sucrose, maltose, lactose.
  • Polysaccharides (many monosaccharides bonded): starch, glycogen, cellulose.
    • Glycogen: energy storage, heavily branched
    • Starch: plant energy storage, less branched
    • Cellulose: plant structural support, linear

Lipids

  • Fats: fatty acids + glycerol, energy storage.
  • Saturated: single bonds between carbons.
  • Unsaturated: double bonds between carbons.
  • Phospholipids: major cell membrane components.
  • Amphipathic (both hydrophobic and hydrophilic regions).
  • Steroids: composed of four fused rings, cell membrane constituents, hormones. (Cholesterol, vitamin D, bile salts).

Proteins

  • Monomer: amino acid.
  • Polymer: polypeptide.
  • Peptide bonds link amino acids.
  • Four levels of structure (primary, secondary, tertiary, and quaternary) determine unique protein shape and function.
  • Enzymes speed up metabolic reactions.

Nucleic Acids

  • Monomer: nucleotide.
  • Phosphate, sugar, and a nitrogenous base.
  • DNA: double stranded.
  • Contains deoxyribose sugar.
  • Nitrogenous bases (A, T, C, G).
  • RNA: single-stranded.
  • Contains ribose sugar.
  • Contains uracil (U) instead of thymine (T).
  • DNA vs. RNA Structure
  • Structure and function differ.
  • Roles of DNA & RNA in cell life: instructions for making proteins & transmitting genes to offspring.

ATP

  • Adenosine triphosphate.
  • Principal energy currency of cells.
  • Energy released by breaking the bond between phosphate groups.
  • Phosphate groups are added to proteins by phosphorylation to activate the proteins.

Digestion and Absorption

  • Mechanical Digestion: physically breaking down foods. (chewing, churning in stomach)
  • Chemical Digestion: uses enzymes (proteins) to break down food.
    • Amylase: digests carbohydrates.
    • Pepsin: digests proteins
    • Lipase: digests lipids.
  • Absorption: process of moving nutrients, salts and water into the GI tract.
  • Small intestine: most absorption occurs here.
  • Large intestine: reabsorbs water; forms and propels feces.

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