Introduction to Biology Flashcards
What is the basic unit of life?
The cell.
True or False: All living organisms are made up of one or more cells.
True.
Fill in the blank: The process by which organisms maintain a stable internal environment is called ______.
homeostasis.
What are the four main macromolecules essential for life?
Proteins, nucleic acids, carbohydrates, and lipids.
Which type of cell lacks a nucleus?
Prokaryotic cell.
What is the genetic material found in all living cells?
DNA.
Multiple choice: Which of the following is NOT a characteristic of life? A) Growth B) Reproduction C) Inability to evolve D) Response to stimuli
C) Inability to evolve.
What is the primary function of ribosomes in a cell?
Protein synthesis.
True or False: Photosynthesis occurs in mitochondria.
False.
What are the two main types of cells?
Prokaryotic and eukaryotic cells.
Fill in the blank: The ______ is the powerhouse of the cell.
mitochondria.
What is the role of enzymes in biological processes?
To speed up chemical reactions.
Multiple choice: Which of the following processes do plants use to convert sunlight into energy? A) Respiration B) Photosynthesis C) Fermentation D) Digestion
B) Photosynthesis.
What is the term for the variety of life in the world or in a particular habitat or ecosystem?
Biodiversity.
True or False: Evolution is a change in the genetic makeup of a population over time.
True.
What is the smallest unit of an element?
An atom.
Fill in the blank: The study of heredity and the variation of inherited characteristics is called ______.
genetics.
What are the two main stages of the cell cycle?
Interphase and mitotic phase.
Multiple choice: Which biomolecule is primarily responsible for storing and transmitting genetic information? A) Proteins B) Nucleic acids C) Carbohydrates D) Lipids
B) Nucleic acids.
What is a hypothesis?
A testable prediction about the relationship between variables.
True or False: The scientific method is a linear process.
False.
What is the primary function of the cell membrane?
To regulate what enters and exits the cell.
Fill in the blank: The ______ is the part of the cell that contains the genetic material.
nucleus.
What is meant by ‘natural selection’?
The process by which organisms better adapted to their environment tend to survive and produce more offspring.
Multiple choice: Which of the following is a type of symbiotic relationship where both species benefit? A) Commensalism B) Parasitism C) Mutualism D) Competition
C) Mutualism.
What is the primary role of chlorophyll in plants?
To absorb light energy for photosynthesis.
True or False: All living organisms require oxygen to survive.
False.
