BackBIO 111 Final Exam Review – Step-by-Step Study Guidance
Study Guide - Smart Notes
Tailored notes based on your materials, expanded with key definitions, examples, and context.
Q1. What is biology the study of?
Background
Topic: Introduction to Biology
This question tests your understanding of the basic definition and scope of biology as a scientific discipline.
Key Terms:
Biology: The scientific study of life and living organisms.
Organism: Any living thing, such as plants, animals, fungi, or microorganisms.
Step-by-Step Guidance
Think about what all living things have in common and what scientists study when they investigate life.
Recall the main focus of biology as a science—what questions does it try to answer?
Consider the types of systems, processes, and interactions that biology seeks to understand.
Try answering this on your own before checking the answer!
Final Answer: Biology is the scientific study of life and living organisms, including their structure, function, growth, origin, evolution, and distribution.
This definition highlights that biology covers all aspects of living things and their interactions.
Q2. What are the seven aspects of life? How many does an organism need to possess to be considered ‘alive’?
Background
Topic: Characteristics of Life
This question tests your knowledge of the fundamental properties that define living organisms.
Key Terms:
Aspects of Life: Also called characteristics or properties of life; these are features shared by all living things.
Step-by-Step Guidance
Recall the list of characteristics that biologists use to define life (e.g., order, response to stimuli, etc.).
List each aspect and briefly describe what it means.
Think about whether an organism must have all these characteristics to be considered alive, or just some of them.
Try listing the aspects and answering the second part before revealing the answer!
Final Answer:
The seven aspects of life are: order, response to stimuli, reproduction, growth and development, regulation (homeostasis), energy processing, and evolutionary adaptation. An organism must possess all seven to be considered alive.
These characteristics distinguish living things from non-living matter.
Q3. How does a theory differ from a hypothesis?
Background
Topic: Scientific Method
This question tests your understanding of the difference between two key scientific concepts: theory and hypothesis.
Key Terms:
Hypothesis: A testable, specific prediction or explanation for an observation.
Theory: A broad, well-supported explanation for a wide range of phenomena, based on extensive evidence.
Step-by-Step Guidance
Define what a hypothesis is and what role it plays in scientific investigations.
Define what a theory is and how it is developed over time.
Compare the scope, evidence, and certainty associated with each term.
Try explaining the difference in your own words before checking the answer!
Final Answer:
A hypothesis is a specific, testable prediction, while a theory is a broad explanation supported by a large body of evidence. Theories are more comprehensive and widely accepted than hypotheses.
Q4. What is an atom? What are the components (protons, neutrons, etc.), their charges and locations?
Background
Topic: Basic Chemistry for Biology
This question tests your understanding of atomic structure, which is foundational for understanding molecules and chemical reactions in biology.
Key Terms:
Atom: The smallest unit of an element that retains its chemical properties.
Proton: Positively charged particle found in the nucleus.
Neutron: Neutral particle found in the nucleus.
Electron: Negatively charged particle found in orbitals around the nucleus.
Step-by-Step Guidance
Define what an atom is in the context of chemistry and biology.
List the three main subatomic particles and their charges.
Describe where each particle is located within the atom.
Try drawing or describing an atom before revealing the answer!
Final Answer:
An atom consists of a nucleus (containing protons, which are positive, and neutrons, which are neutral) and electrons (which are negative) that orbit the nucleus.
Q5. How do you determine the number of protons, electrons and neutrons an element has?
Background
Topic: Atomic Structure and Elements
This question tests your ability to use atomic number and mass number to find the number of subatomic particles in an atom.
Key Terms and Formulas:
Atomic Number (Z): Number of protons in the nucleus.
Mass Number (A): Total number of protons and neutrons.
Number of Neutrons:
Step-by-Step Guidance
Find the atomic number (Z) for the element; this gives the number of protons.
For a neutral atom, the number of electrons equals the number of protons.
Subtract the atomic number from the mass number to find the number of neutrons:
Try applying these steps to an example element before checking the answer!
Final Answer:
Number of protons = atomic number; number of electrons = atomic number (if neutral); number of neutrons = mass number minus atomic number.
