Laboratory
100: What should you do if you don't understand a lab instruction?
100: What is the building block of proteins?
Answer: Amino acids.
100: What property causes water molecules to stick together?
Answer: Cohesion.
100: What is a characteristic of life that living organisms have when given a stimulus
Answer: They respond to their environment.
100: What type of bond involves the sharing of electrons?
Answer: Covalent bond.
200: Why should you never use flammable liquids near an open flame?
Answer: They can ignite and cause a fire
200: What type of carbohydrate is used for energy storage in animals?
Answer: Glucose, Glycogen, Sugar
200: Why is water considered a polar molecule?
Answer: It has a partial positive charge on one side and a partial negative charge on the other.
200:What is homeostasis?
200: What is an ionic bond?
Answer: A bond formed by the transfer of electrons from one atom to another.
300: What is the first action you should take if you are injured in the laboratory?
Answer: Tell the science instructor at once.
300: Which biomolecule is primarily responsible for long-term energy storage?
Answer: Lipids.
300: What happens to water when it freezes?
Answer: It expands, trap air in between, and becomes less dense, allowing ice to float.
300: Describe asexual reproduction.
Answer: It is reproduction involving a single parent, producing offspring that are genetically identical.
300: What is the significance of hydrogen bonds in water?
Answer: They contribute to water's unique properties, such as cohesion and surface tension.
400: What should you do with chemical wastes after completing an experiment?
Answer: Dispose of them according to your instructor’s directions.
400: What is the monomer of nucleic acids?
Answer: Nucleotides.
400: How does water’s high heat capacity benefit living organisms?
Answer: It helps regulate temperature and prevents drastic changes in the environment.
400: What is the smallest unit of life?
Answer: The cell.
400: What is a molecule?
Answer: A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
500: Why are goggles worn in the laboratory?
Answer: To protect your eyes from chemicals, heat, or glassware.
500: Describe the role of enzymes in biological reactions.
Answer: They speed up chemical reactions in cells.
500: Explain how adhesion affects water movement in plants.
Answer: It allows water to climb up through capillary action in plant stems.
500: How do living organisms obtain energy? (both types of organisms)
Answer: Heterotrophs consume other living things, while autotrophs obtain energy from the sun.
500: Explain the concept of polarity in water molecules
Answer: Water has a partial positive charge on hydrogen atoms and a partial negative charge on the oxygen atom, allowing it to form hydrogen bonds with other molecules.