General Biology - Chapters 1 & 2 Test
Question and answers rated A+
2025/2026
The basic structural and physiological unit of most living organisms is the - correct answer ✔cell
There has been life on Earth for approximately _______ years. - correct answer ✔4 billion
The critical step for the evolution of life was the - correct answer ✔appearance of nucleic acids that
could replicate themselves
The accumulation of _______ allowed organisms to grow larger. - correct answer ✔O2 in the
atmosphere
Which statement about aerobic metabolism is false? - correct answer ✔It provides protection from UV
radiation.
The information needed to produce proteins is contained in - correct answer ✔genes
A species consist of - correct answer ✔a group of individuals of the same type of organism that share a
common genome.
A scientist has isolated the same gene from ten different species. Once these ten pieces of DNA have
been sequenced, the scientist will line up the sequences to compare them. She should be able to draw
conclusions about the evolutionary relationships among these ten species by using the following as a
guide: The _______the _______ in gene sequences for two species, the _______ the time span since
these species diverged froma common ancestor during their evolution. - correct answer ✔greater;
similarities; shorter
Question and answers rated A+
2025/2026
The basic structural and physiological unit of most living organisms is the - correct answer ✔cell
There has been life on Earth for approximately _______ years. - correct answer ✔4 billion
The critical step for the evolution of life was the - correct answer ✔appearance of nucleic acids that
could replicate themselves
The accumulation of _______ allowed organisms to grow larger. - correct answer ✔O2 in the
atmosphere
Which statement about aerobic metabolism is false? - correct answer ✔It provides protection from UV
radiation.
The information needed to produce proteins is contained in - correct answer ✔genes
A species consist of - correct answer ✔a group of individuals of the same type of organism that share a
common genome.
A scientist has isolated the same gene from ten different species. Once these ten pieces of DNA have
been sequenced, the scientist will line up the sequences to compare them. She should be able to draw
conclusions about the evolutionary relationships among these ten species by using the following as a
guide: The _______the _______ in gene sequences for two species, the _______ the time span since
these species diverged froma common ancestor during their evolution. - correct answer ✔greater;
similarities; shorter
