Bio 1001 Yorku Midterm 1 Exam Questions With Correct Answers

BIOL 1001 EXAM 1 (KESSLER) QUESTIONS AND ANSWERS 2025 latest 100% pass CHAPTER 1: All of the following are true of all living organisms EXCEPT that they? a. Are made of cells. b. Can grow. c. Can reproduce themselves. d. Respond to stimuli. e. Possess either DNA or RNA. - ANSWERE. Possess either DNA or RNA CHAPTER 1: A mutation is a? a. Physical deformity. b. Change in the DNA sequence. c. Dose of radiation. d. Defective egg or sperm cell. e. NONE of the above - ANSWERB. Change in the DNA sequence CHAPTER 1: Which group has prokaryotic individuals? a. Protist Kingdoms b. Kingdom Fungi c. Kingdom Plantae d. Kingdom Animalia e. Domain Archaea - ANSWERE. Domain Archaea CHAPTER 1: Imagine that 1 milliliter of an experimental drug diluted in a saline solution is injected into 20 pregnant mice to determine possible side effects. Which of the following is a suitable control for this experiment? a. 20 male mice injected with 1 milliliter of saline b. 20 male mice injected with 1 milliliter of the drug c. 20 pregnant mice injected with 2 milliliters of the drug d. 20 nonpregnant mice injected with 1 milliliter of the drug e. 20 pregnant mice injected with 1 milliliter of saline - ANSWERE. 20 pregnant mice injected with 1 millimeter of saline CHAPTER 1: Francesco Redi designed an experiment to test the notion of He left the first jar of meat open to the air and covered the second jar. The first jar would be called the ____ jar? a. Experimental b. Control c. Conclusive d. Hypothetical e. NONE of the above - ANSWERB. Control CHAPTER 1: In a word, "evolution" means? a. Selection. b. Improvement. c. Nature. d. Change. e. NONE of the above - ANSWERD. Change CHAPTER 1: Suppose that a meteorite crashes into Earth and a sample of it is taken to a local research lab for analysis. Embedded several inches within the rocky structure, a microscopic cluster of dormant, spore-like structures is found. The scientists culture some of this material in a standard microbiological nutrient broth, and they are surprised to find many single-celled "organisms" moving around, growing, and reproducing in the broth. The "organisms" behave the same in both daylight and dark conditions, do not require oxygen, and persist under a wide range of temperatures and pH levels. They stop moving, growing, and reproducing, however, when fewer nutrients are available in the medium. In this scenario, the "organisms" most closely resemble a(n)? a. Autotrophic species of Eukarya. b. Photosynthetic species of Bacteria. c. Heterotrophic species of Archaea. d. Nonliving virus. e. Heterotrophic species of Eukar - ANSWERC. Heterotrophic species of Archaea CHAPTER 1: Which of the following is true regarding faith-based assertions and scientific theories? a. Both faith-based assertions and scientific theories can be proven. b. Any and all faith-based assertions can be disproven, but scientific theories cannot. c. Any and all scientific theories can be disproven, but faith-based assertions cannot. d. Scientific theories are not modifiable, but faith-based assertions are. e. Faith-based assertions can become scientific theories. - ANSWERC. Any and all scientific theories can be disproven, but faith-based assertions cannot. CHAPTER 1: The main difference between an autotroph and a heterotroph is? a. How they reproduce. b. How they respond to stimuli. c. Their ability to move. d. How they obtain energy. e. NONE of the above - ANSWERD. How they obtain energy CHAPTER 1: Which of the following statements is a hypothesis rather than a theory? a. Matter is composed of atoms. b. Living things are made of cells. c. Modern organisms descended from preexisting life-forms. d. Female birds prefer to mate with male birds that have longer tails. e. NONE of the above - ANSWERD. Female birds prefer to have sex with male birds that have longer tails CHAPTER 2: Which of the following is an example of hydrogen bonding? a. The bond between O and H in a single molecule of water b. The bond between O of one water molecule and H of a second water molecule c. The bond between O of one water molecule and O of a second water molecule d. The bond between H of one water molecule and H of a second water molecule e. The bond between the H of a water molecule and H of a hydrogen molecule - ANSWERB. The bond between O of one water molecule and H of a second water molecule CHAPTER 2: Acids have pH values below 7, while bases have pH values above 7. True or False? a. TRUE b. FALSE - ANSWERA. TRUE CHAPTER 2: Water moves through a plant because of the property of? a. High heat of fusion. b. High heat of vaporization. c. High specific heat. d. Cohesion. e. NONE of the above - ANSWERD. Cohesion CHAPTER 2: Which of the following pairs has the most similar chemical properties? a. 1H and 22Na b. 12C and 28Si c. 16O and 32S d. 12C and 14C e. 1H and 2He - ANSWERD. 12C and 14C CHAPTER 2: The atomic number of hydrogen is 1. Based on this fact, all of the following must be true of hydrogen gas (H2) EXCEPT that it? a. Is stable. b. Is covalently bonded. c. Shares one pair of electrons. d. Is polar. e. NONE of the above - ANSWERD. Is polar CHAPTER 2: Which of the following results from a transfer of electron(s) between atoms? a. Nonpolar covalent bond b. Polar covalent bond c. Ionic bond d. Hydrogen bond e. Electron-proton interaction - ANSWERC. Ionic Bond CHAPTER 2: Which of the following often form(s) as a result of polar bonds? a. Ionic bonds b. Hydrogen bonds c. Peptide bonds d. Ice e. Water - ANSWERB. Hydrogen Bonds CHAPTER 2: In general, a substance that carries an electric charge can dissolve in water. Given this fact, which of the following would most likely NOT dissolve in water? a. Ionic compounds b. Polar covalent molecules c. Nonpolar molecules d. NaCl e. NONE of the above - ANSWERC. Nonpolar molecules CHAPTER 2: Water molecules are held together by ionic bonds. True or False? a. TRUE b. FALSE - ANSWERB. FALSE CHAPTER 2: How do buffers work? a. They soak up extra acid and base. b. They accept or release H+. c. They accept or release OH- . d. They convert H+ and OH- to water. e. They monitor the blood pH. - ANSWERB. They accept or release H+ CHAPTER 3: Which of the following is TRUE about waxes? a. They are a type of complex carbohydrate. b. They are an important food source, and most animals have enzymes for breaking them down. c. They are saturated fats and are solid at normal outdoor temperatures. d. They are unsaturated and most similar to proteins. e. NONE of the above - ANSWERC. They are saturated fats and are solid at normal outdoor temperatures CHAPTER 3: Keratin and silk are examples of ________, whereas glucose and maltose are examples of ________? a. Proteins; lipids b. Proteins; carbohydrates c. Carbohydrates; proteins d. Nucleic acids; lipids e. NONE of the above - ANSWERB. Proteins; Carbohydrates CHAPTER 3: Where is glycogen stored in vertebrate animals? a. Liver and muscles b. Brain and kidneys c. Teeth and bones d. Pancreas and blood e. Fat cells - ANSWERA. Liver and Muscles CHAPTER 3: A denatured protein differs from a normal protein because it? a. Does not contain amino acids. b. Has lost its usual secondary and tertiary structures. c. Is composed of nucleotides. d. Contains many disulfide bonds. e. NONE of the above - ANSWERB. Has lost its usual secondary and tertiary structures CHAPTER 3: Which of the following biological molecules are composed of amino acid subunits? a. Proteins b. Carbohydrates c. Lipids d. Nucleic acids e. NONE of the above - ANSWERA. Proteins CHAPTER 3: Which of the following is an example of a protein? a. Casein b. Cellulose c. Estrogen d. ATP e. NONE of the above - ANSWERA. Casein CHAPTER 3: A nucleotide is made of a? a. Phospholipid, sugar, and base. b. Phosphate, protein, and base. c. Phosphate, sugar, and base. d. Phospholipid, sugar, and protein. e. NONE of the above - ANSWERC. Phosphate, Sugar, and Base. CHAPTER 3: Which of the following biological molecules are composed of monomer units containing a sugar, a phosphate group, and a nitrogen-containing base? a. Proteins b. Carbohydrates c. Lipids d. Nucleic acids e. NONE of the above - ANSWERD. Nucleic Acids CHAPTER 3: Which of the following reactions requires the removal of water to form a covalent bond? a. glycogen - glucose subunits b. peptide - alanine + glycine c. cellulose - glucose d. glucose + galactose - lactose e. fat - fatty acids + glycero - ANSWERD. Glucose+Galactose - Lactose CHAPTER 3: Which of the following BEST explains the molecular complexity of living organisms? a. The large number of different monomers allows for the construction of many polymers. b. Each organism has its own unique set of monomers for use in constructing polymers. c. Condensation reactions can create different polymers because they can combine virtually any molecules in the cell. d. Although there are not many biological molecules in cells, each one has many different functions. e. A small number of monomers can be assembled into large polymers with many different sequences - ANSWERE. A small number of monomers can be assembled into large polymers with many different sequences. CHAPTER 4: The nuclei of eukaryotic cells are characterized by what? a. A single-layered membrane. b. One or more nucleoids. c. A double membrane. d. A nonporous membrane. e. NONE of the above - ANSWERC. A double membrane. CHAPTER 4: Flagellated cells can do what? a. Move internal organelles more efficiently than nonflagellated cells. b. Attach to surfaces more effectively because of the flagella. c. Move the cell through fluid. d. Divide more quickly than nonflagellated cells. e. NONE of the above - ANSWERC. Move the cell through fluid. CHAPTER 4: Plastids are found in what type of cells? a. Bacterial b. Plant c. Animal d. Fungal e. NONE of the above - ANSWERB. Plant. CHAPTER 4: Which of the following is capable of converting light energy into chemical energy? a. Chloroplasts b. Mitochondria c. Vesicles d. Vacuoles e. Golgi apparatus - ANSWERA. Chloroplasts. CHAPTER 4: All the following are important functions of the cytoskeleton EXCEPT what? a. Storage of food molecules. b. Assistance during cell division. c. Movement of organelles. d. Maintenance of shape. e. Maintenance of organization in the cell - ANSWERA. Storage of food molecules CHAPTER 4: Aerobic metabolism occurs where? a. Ribosome. b. Chloroplast. c. Mitochondrion. d. Cytoplasm. e. Nucleus. - ANSWERC. Mitochondrion CHAPTER 4: Which cellular organelle packages enzymes and forms lysosomes? a. Golgi apparatus b. Smooth ER c. Mitochondrion d. Rough ER e. NONE of the above - ANSWERA. Golgi Apparatus CHAPTER 4: How does a cell rid itself of defective or malfunctioning organelles? a. The organelles are engulfed by plastids and stored. b. Defective organelles accumulate until the cell itself dies. c. Lysosomes assist in the removal of defective organelles by digesting them. d. Ribosomes remove malfunctioning organelles by degrading the parts. e. The organelles are exported by phagocytosis. - ANSWERC. Lysosomes assist in the removal of defective organelles by digesting them. CHAPTER 4: Ribosomes are the site of synthesis of what? a. DNA. b. RNA. c. Proteins. d. Nucleoli. e. Glucose - ANSWERC. Proteins CHAPTER 4: A nucleolus is what? a. An extra nucleus in the cell. b. An area in the nucleus where ribosomes are made. c. An area where the nucleus is synthesized. d. A membrane-bound organelle. e. The area in a prokaryote where DNA is concentrated. - ANSWERB. An area in the nucleus where ribosomes are made. CHAPTER 1: All of the following are true of all living organisms EXCEPT that they? a. Are made of cells. b. Can grow. c. Can reproduce themselves. d. Respond to stimuli. e. Possess either DNA or RNA. - ANSWERE. Possess either DNA or RNA CHAPTER 1: A mutation is a? a. Physical deformity. b. Change in the DNA sequence. c. Dose of radiation. d. Defective egg or sperm cell. e. NONE of the above - ANSWERB. Change in the DNA sequence CHAPTER 1: Which group has prokaryotic individuals? a. Protist Kingdoms b. Kingdom Fungi c. Kingdom Plantae d. Kingdom Animalia e. Domain Archaea - ANSWERE. Domain Archaea CHAPTER 1: Imagine that 1 milliliter of an experimental drug diluted in a saline solution is injected into 20 pregnant mice to determine possible side effects. Which of the following is a suitable control for this experiment? a. 20 male mice injected with 1 milliliter of saline b. 20 male mice injected with 1 milliliter of the drug c. 20 pregnant mice injected with 2 milliliters of the drug d. 20 nonpregnant mice injected with 1 milliliter of the drug e. 20 pregnant mice injected with 1 milliliter of saline - ANSWERE. 20 pregnant mice injected with 1 millimeter of saline CHAPTER 1: Francesco Redi desig