General Biology 1 : Exam 1 (Chapter 1
-4) Review Question and answers
correctly solved 2025/2026
What does a eukaryotic cell have, that a prokaryotic cell does not? - correct answer ✔Intracellular
membranes
What are two unifying features of all living organisms? - correct answer ✔They are made of cells
surrounded by a plasma membrane and they contain DNA.
Natural Selection is the scientific theory that can make sense of... - correct answer ✔The unity and
diversity of life
A key point in Darwin's explanation of evolution is that - correct answer ✔Any trait that confers even a
small increase in the probability that its possessor will survive and reproduce will be strongly favored
and will spread through the population.
Which of the following domains contains multicellular organism? - correct answer ✔Eukarya
Which of the following domains contains single cells organisms? - correct answer ✔All of the above
(Eukarya, Archaea, and Bacteria)
Which of the following is a feature of a scientific hypothesis - correct answer ✔All of the above
(They can be disproved, They make predictions, They are based on observations, and They can be tested
by experimentation).
Which component of an atom does not significantly add to its mass? - correct answer ✔Electron
, In a neutral atom the number of protons is equal to the number of... - correct answer ✔Electrons
The number of __________ defines each element. - correct answer ✔Protons
How many bonds does Carbon need to form to be stable? - correct answer ✔4
Hydrogen bonds - correct answer ✔Form between a strong electronegative atom and hydrogen.
What is the charge of a proton? - correct answer ✔+1
Which of the following elements has the highest electronegativity commonly found in nature? - correct
answer ✔Oxygen
What type of chemical bond is formed when two atoms share an electron in their outer energy shell in
order to become more stable? - correct answer ✔Covalent Bond
What is the term for two atoms with the same number of protons and electrons, but a different number
of neutrons? - correct answer ✔Isotope
Which of the following determines the reactivity of an atom - correct answer ✔The number of
electrons in the outer most shell
How many electrons does it take to fill the second electron shell - correct answer ✔8
What do you call a chemical that releases hydrogen ions (H+) when dissolved in water? - correct answer
✔Acid
-4) Review Question and answers
correctly solved 2025/2026
What does a eukaryotic cell have, that a prokaryotic cell does not? - correct answer ✔Intracellular
membranes
What are two unifying features of all living organisms? - correct answer ✔They are made of cells
surrounded by a plasma membrane and they contain DNA.
Natural Selection is the scientific theory that can make sense of... - correct answer ✔The unity and
diversity of life
A key point in Darwin's explanation of evolution is that - correct answer ✔Any trait that confers even a
small increase in the probability that its possessor will survive and reproduce will be strongly favored
and will spread through the population.
Which of the following domains contains multicellular organism? - correct answer ✔Eukarya
Which of the following domains contains single cells organisms? - correct answer ✔All of the above
(Eukarya, Archaea, and Bacteria)
Which of the following is a feature of a scientific hypothesis - correct answer ✔All of the above
(They can be disproved, They make predictions, They are based on observations, and They can be tested
by experimentation).
Which component of an atom does not significantly add to its mass? - correct answer ✔Electron
, In a neutral atom the number of protons is equal to the number of... - correct answer ✔Electrons
The number of __________ defines each element. - correct answer ✔Protons
How many bonds does Carbon need to form to be stable? - correct answer ✔4
Hydrogen bonds - correct answer ✔Form between a strong electronegative atom and hydrogen.
What is the charge of a proton? - correct answer ✔+1
Which of the following elements has the highest electronegativity commonly found in nature? - correct
answer ✔Oxygen
What type of chemical bond is formed when two atoms share an electron in their outer energy shell in
order to become more stable? - correct answer ✔Covalent Bond
What is the term for two atoms with the same number of protons and electrons, but a different number
of neutrons? - correct answer ✔Isotope
Which of the following determines the reactivity of an atom - correct answer ✔The number of
electrons in the outer most shell
How many electrons does it take to fill the second electron shell - correct answer ✔8
What do you call a chemical that releases hydrogen ions (H+) when dissolved in water? - correct answer
✔Acid
