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BIOLOGY UNIT TEST
Practice Test Questions
| Question | Answer |
|---|---|
| The region in which populations interact with each other and with the physical environment is called _______. | Ecosystem |
| Choose the correct order of increasing complexity/organization. | Cells → Tissues → Organs → Organ systems → Organism |
| Breeding dogs to have short legs and long ears is an example of: | Artificial selection |
| Using specific observations to form general principles is known as | inductive reasoning. |
| This molecule provides a blueprint for the organization, development, and function of living things. | DNA |
| The term Homo sapiens refers to what in taxonomy? | Genus and species |
| The process of change that produces the diversity of life on Earth is called _______. | Evolution |
| Which statement most correctly defines homeostasis? | Cells and organisms must be able to maintain a fairly constant internal environment. |
| All of the ecosystems on the planet together are called the _______. | Biosphere |
| In evolutionary terms, 'fitness' means: | Ability to survive and number of offspring |
| The process of building polymers from monomers in a carbohydrate, protein, or nucleic acid is called: | Dehydration synthesis |
| The storage polysaccharide in plants is: | Starch |
| The tendency for water molecules to stick to one another is known as: | Cohesion |
| Water has a high specific heat, which means: | Water heats up slowly and cools off slowly. |
| A bond where an electron is lost or gained is known as a(n): | Ionic bond |
| All matter is | composed of atoms. |
| In order for a molecule to be considered organic, it must: | Include carbon and hydrogen |
| The atomic number of an element is equal to the number of ______ . | protons |
| Sugars are the monomer of: | Carbohydrates |
| The atomic mass of an element is equal to the number of ________ plus the number of neutrons. | protons |
| A structural polysaccharide found in the exoskeleton of arthropods is called: | Chitin |
| The building blocks of nucleic acids are: | Nitrogenous bases |
| A steroid hormone is | a type of lipid. |
| Hemoglobin is an example of a: | Protein |
| There are _____ levels of structures in proteins. | Four (4) |
| Which is NOT a function of proteins? | Short term energy |
| The organelle that turns glucose into ATP is: | Mitochondria |
| The nucleus is surrounded by its own membrane, called the: | Nuclear envelope |
| Wax is | is a lipid, |
| Bacteria use these to adhere to substrates: | Pili |
| Which of the following are functions of proteins? Enzymes, Hormones, Short-term energy, Structural | Enzymes, Hormones, Structural |
| TRUE or FALSE ---- water. | turn hydrogen peroxide into water. |
| The main function of the cytoskeleton is: | Support the cell shape and movement |
| Most bacteria have a cell wall. | a cell wall. |
| The rough endoplasmic reticulum: | Is where proteins are synthesized |
| Which of the following are properties of water? Cohesion, Adhesion, High specific heat, Non-polarity | Cohesion, Adhesion, High specific heat |
| All eukaryotes: | Have membrane-bound organelles |
| The plasma membrane is primarily composed of _________________. | phospholipids |
| Lysosomes: | Break down worn-out cell fragments |
| phospholipid | have one hydrophilic head and two hydrophobic tails. |
| Which of the following are examples of nucleic acids? Select all that apply. DNA, RNA, ATP, Hemoglobin | DNA, RNA |
| The organelle responsible for protein synthesis is the _____________. | ribosome |
| Cellulose is | is a structural polysaccharide in plant cell walls. |
| Explain why water's polarity is essential for life. | Water's polarity allows it to form hydrogen bonds, which give it unique properties such as cohesion, adhesion, high specific heat, and its role as a universal solvent. These properties are critical for biological processes. |
| Which organelle packages and modifies proteins for secretion? | Golgi apparatus |
| Which of the following is NOT a property of living organisms? | Photosynthesis |
| The organelle that contains the cell's genetic material is the ____________________ . | nucleus |
| Which of the following are examples of carbohydrates? Select all that apply. A. Glucose B. Starch C. Glycogen D. Cholesterol | Glucose, Starch, Glycogen |
| Describe the differences between prokaryotic and eukaryotic cells. | Prokaryotic cells lack a nucleus and membrane-bound organelles, are generally smaller, and have circular DNA. Eukaryotic cells have a nucleus, membrane-bound organelles, are larger, and have linear chromosomes. |
| Prokaryotic cells lack | membrane-bound organelles. |
Created by:
jsminnie118
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