PLTW BIOMEDICAL SCIENCE MIDYEAR GRADED A+
REVISED EXAM 2025/2026 Q&A
Guanine - one of the four constituent bases of nucleic acids. A purine derivative, it is paired with
cytosine in double-stranded DNA.
adenine - a compound that is one of the four constituent bases of nucleic acids. A purine derivative,
it is paired with thymine in double-stranded DNA.
cytosine - a compound found in living tissue as a constituent base of nucleic acids. It is paired with
guanine in double-stranded DNA.
thymine - a compound that is one of the four constituent bases of nucleic acids. A pyrimidine
derivative, it is paired with adenine in double-stranded DNA.
The Glastier equation - 98.4-recorded temp/1.5hours=Hours Since Death
Nucleotide - building block of DNA, consisting of a five-carbon sugar covalently bonded to a
nitrogenous base and a phosphate group.
Dependent variable - measurable effect, outcome, or response in which the research is interested
Control Group - The group in an experiment where the independent variable being tested is not
applied so that it may serve as a standard for the comparison against the experimental group where
the independent variable is applied.
What medical profession performs autopsies? - forensic pathologist (medical examiner)
cortex - home to pigment containing granules
lividity - helps determine the position of the body at the time of death
forensic autopsy - try to find cause of death for a police investigaation
REVISED EXAM 2025/2026 Q&A
Guanine - one of the four constituent bases of nucleic acids. A purine derivative, it is paired with
cytosine in double-stranded DNA.
adenine - a compound that is one of the four constituent bases of nucleic acids. A purine derivative,
it is paired with thymine in double-stranded DNA.
cytosine - a compound found in living tissue as a constituent base of nucleic acids. It is paired with
guanine in double-stranded DNA.
thymine - a compound that is one of the four constituent bases of nucleic acids. A pyrimidine
derivative, it is paired with adenine in double-stranded DNA.
The Glastier equation - 98.4-recorded temp/1.5hours=Hours Since Death
Nucleotide - building block of DNA, consisting of a five-carbon sugar covalently bonded to a
nitrogenous base and a phosphate group.
Dependent variable - measurable effect, outcome, or response in which the research is interested
Control Group - The group in an experiment where the independent variable being tested is not
applied so that it may serve as a standard for the comparison against the experimental group where
the independent variable is applied.
What medical profession performs autopsies? - forensic pathologist (medical examiner)
cortex - home to pigment containing granules
lividity - helps determine the position of the body at the time of death
forensic autopsy - try to find cause of death for a police investigaation
