BIOL 115 Chapter 1 Practice Test Milestone 2020 – Strayer University | BIOL 115 Chapter 1 Practice Test Milestone 2020

BIOL 115 Chapter 1 Practice Test Milestone 2020 – Strayer University Which of the following is part of a nucleotide? • Nitrogen base • Cytosol • RNA • Ribosomes CONCEPT Nucleic Acids I need help with ...

BIOL 115 Chapter 1 Practice Test Milestone 2020 – Strayer University Which of the following is part of a nucleotide? • Nitrogen base • Cytosol • RNA • Ribosomes CONCEPT Nucleic Acids I need help with this question
 2 Which of the following describes the nucleus? • A form of uncondensed DNA found within the the cell. • A cell organelle found in eukaryotic cells that houses the DNA and controls activity within the cell • A structure found within the nucleolus that produces subunits of ribosomes • A condensed form of DNA that occurs when the cell is dividing CONCEPT Nucleus I need help with this question
 3 Which of the following is a characteristic of the plasma membrane? • Only small molecules are allowed into and out of the cell by the plasma membrane. • To protect the cell's internal contents, water is the only substance that can freely pass through the plasma membrane. • The structure of the phospholipids forms a stiff protective outer shell around the cell's internal contents. • Its selective permeability allows certain molecules, such as oxygen and carbon dioxide, to flow freely in and out of the cell while controlling the flow of other molecules. CONCEPT Plasma Membrane I need help with this question
 4 What is true about the electron transport chain? • Very few ATP molecules are produced in this step of cellular respiration. • ATP is produced as the hydrogen gradient evens out. • 64 total ATP are produced by the electron transport chain. • The process occurs in the outer membrane of the mitochondria. CONCEPT Electron Transport Chain I need help with this question
 5 A carbohydrate with one sugar unit is a(n) __________. • polysaccharide • oligosaccharide • disaccharide • monosaccharide CONCEPT Carbohydrates I need help with this question
 6 Which step of the scientific method involves constructing a proposed explanation of a phenomenon? • Prediction • Conclusion • Observation • Hypothesis CONCEPT Scientific Method I need help with this question
 7 Which of the following statements is a verifiable fact? • A restaurant's business is better on rainy days. • Rainy days are somewhat depressing. • A nearby park is more picturesque in the rain. • Rainy days are more relaxing. CONCEPT Evaluate Information I need help with this question
 8 What is the purpose of the endomembrane system? • To act as a control center for the cell • To give structure to and regulate movement into and out of the cell • To break down carbohydrates and make ATP • To synthesize and package proteins and lipids CONCEPT Endoplasmic Reticulum I need help with this question
 9 What is catabolism? • The various chemical reactions that occur within cells • The process of breaking down larger molecules • Metabolism on a larger scale between cells • The process of building larger molecules CONCEPT Metabolism I need help with this question
 10 Which of the following statements is true? • Most cells arise from preexisting cells, but a small minority of cells occur spontaneously. • The organelles found inside cells are the smallest unit of life. • An organism is a single living thing, composed of one or more cells. • All organisms are made up of two or more cells. CONCEPT Cell Theory I need help with this question
 11 What type of transport is diffusion? • Passive transport • Transport using transport proteins • Osmosis • Active transport CONCEPT Diffusion I need help with this question
 12 Which of the following is part of the cytoskeleton? • Introductory tubules • Tertiary filaments • Intermediate filaments • Cytosol CONCEPT Cytoplasm I need help with this question
 13 Which type of fat is usually solid at room temperature? • Unsaturated fat • Saturated fat • Triglyceride • Trans fat CONCEPT Lipids I need help with this question
 14 In the structural organization of organisms, which level of organization is made up of organ systems? • Organs • Organisms • Tissues • Cells CONCEPT Organisms I need help with this question
 15 What is true about the Krebs cycle? • Another name for the Krebs cycle is the coenzyme cycle. • Preparatory steps convert pyruvate from glycolysis into NADH. • It does not directly produce any ATP molecules. • It occurs in the cell's mitochondria. CONCEPT Krebs Cycle I need help with this question
 16 What kind of transport requires ATP to move materials across the cell membrane? • Osmosis • Passive transport • Sodium-potassium pump • Active transport CONCEPT Facilitated Diffusion I need help with this question
 17 What role do integrators play in feedback loops to maintain homeostasis? • Attempting to prevent the body from detecting any stimulus or changes • Processing information to determine what response is necessary to maintain homeostasis • Carrying out a particular response, usually determined by the brain, to maintain homeostasis • Detecting stimuli or changes that occur within the body CONCEPT Homeostasis I need help with this question
 18 Which of the following statements about enzymes is true? • At the end of the process, an enzyme converts a substrate into a different product. • Enzymes act to slow down the chemical reactions in the body in order to maintain homeostasis. • A product attaches to an enzyme at the active site to produce a substrate. • Enzymes are general in nature and each enzyme can participate in a wide variety of chemical reactions in the body. CONCEPT Enzymes I need help with this question
 19 What is a Golgi body? • A system of organelles that is used to synthesize and package proteins and lipids • A cell organelle responsible for synthesizing proteins • A membrane-bound sac used to store and protect materials that are transported in the cell • An organelle that packages lipids and proteins to be transported out of the cell CONCEPT Golgi Body I need help with this question
 20 What is tonicity? • When an equal amount of solute is present on both sides of a membrane • The concentration gradient in a solution • The movement of water across a selectively permeable membrane CONCEPT Osmosis I need help with this question
 21 Which is a component of cellular respiration? • Ribosome • Osmosis • The electron transport chain • Mitosis CONCEPT Mitochondria I need help with this question
 22 Which of the following statements about glycolysis is true? • It breaks glucose down into ADP. • It is the first stage of cellular respiration. • It produces three molecules of pyruvate. • It results in a net gain of four ATP molecules. CONCEPT Glycolysis I need help with this question
 23 At what level of protein structure do amino acids form a simple chain? • Tertiary • Quaternary • Primary • Secondary