Natural Sciences Flashcards
6 cards from real B.L.A.; occasionally A.L.B. Bachelor of Liberal Arts practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Natural Sciences flashcards as text
Charles Darwin's theory of natural selection proposes that organisms evolve through which mechanism?
Answer: Heritable variations that improve survival and reproduction are passed to offspring over generations
Natural selection is the process by which heritable traits that increase survival and reproductive success become more common in a population over time.
In chemistry, the pH scale measures which property of a solution?
Answer: The concentration of hydrogen ions, indicating acidity or alkalinity
pH measures the concentration of hydrogen ions (H⁺) in a solution, ranging from 0 (most acidic) to 14 (most basic/alkaline), with 7 being neutral.
Which of the following best describes the function of DNA in living organisms?
Answer: DNA stores and transmits genetic information that directs the synthesis of proteins
DNA is the molecule that encodes genetic information in sequences of nucleotides, which is used to direct protein synthesis and control cell function.
Newton's First Law of Motion (the law of inertia) states which principle?
Answer: An object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force
Newton's First Law states that objects resist changes to their state of motion — they won't start, stop, or change direction without an external net force.
The scientific method begins with which fundamental step?
Answer: Making an observation and formulating a question to investigate
The scientific method begins with observation of a phenomenon, which leads to a question that the researcher seeks to answer through systematic investigation.
In ecology, a 'food chain' illustrates which relationship between organisms?
Answer: The transfer of energy from producers to consumers through a series of feeding relationships
A food chain shows the sequential transfer of energy from plants (producers) through herbivores, carnivores, and decomposers.