B.L.A.; occasionally A.L.B. Bachelor of Liberal Arts Natural Sciences

Question 1

Charles Darwin's theory of natural selection proposes that organisms evolve through which mechanism?

Accepted Answer

Heritable variations that improve survival and reproduction are passed to offspring over generations

Answer

Organisms consciously adapt to their environment during their lifetime

Answer

Random mutations are randomly selected regardless of fitness

Answer

Environmental pressures cause direct genetic changes in individuals

Question 2

In chemistry, the pH scale measures which property of a solution?

Accepted Answer

The concentration of hydrogen ions, indicating acidity or alkalinity

Answer

The temperature at which a solution boils

Answer

The electrical conductivity of dissolved substances

Answer

The density of particles dissolved in the solution

Question 3

Which of the following best describes the function of DNA in living organisms?

Accepted Answer

DNA stores and transmits genetic information that directs the synthesis of proteins

Answer

DNA provides energy for cellular processes through metabolic reactions

Answer

DNA forms the structural framework of cell membranes

Answer

DNA catalyzes biochemical reactions as an enzyme

Question 4

Newton's First Law of Motion (the law of inertia) states which principle?

Accepted Answer

An object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force

Answer

Force equals mass times acceleration

Answer

For every action there is an equal and opposite reaction

Answer

Objects in free fall accelerate at the same rate regardless of mass

Question 5

The scientific method begins with which fundamental step?

Accepted Answer

Making an observation and formulating a question to investigate

Answer

Developing a hypothesis to test

Answer

Conducting a controlled experiment

Answer

Collecting and analyzing data

Question 6

In ecology, a 'food chain' illustrates which relationship between organisms?

Accepted Answer

The transfer of energy from producers to consumers through a series of feeding relationships

Answer

The competition between species for the same ecological niche

Answer

The symbiotic relationships between organisms in an ecosystem

Answer

The geographic distribution of species across a habitat