BIO AC U5 Test UPDATED ACTUAL
Exam Questions and CORRECT Answers
(T1) What is a gene? - CORRECT ANSWER✔✔- A segment of DNA that produces a
protein thus determining a trait
(T1) What is a chromosome? - CORRECT ANSWER✔✔- A condensed or compact "rod" of
DNA that carries genetic information
(T1) What is DNA? - CORRECT ANSWER✔✔- helical molecule that carries the genetic
information of an organism and is passed from parent to offspring.
(T1) What is a genome? - CORRECT ANSWER✔✔- All the DNA in one cell of an
organism
(T1) What is a nucleus? - CORRECT ANSWER✔✔- The control center of the cell; contains
the genetic material
(T1) What is a nucleotide? - CORRECT ANSWER✔✔- A small subunit that makes up
DNA; building blocks for nucleic acids
(T1) List nucleotide, nucleus, genome, chromosome, gene, and DNA from smallest to largest.
- CORRECT ANSWER✔✔- nucleotide, gene, DNA, chromosome, nucleus, genome
(T1) DNA is the _________________ for most organisms - CORRECT ANSWER✔✔-
genetic material
(T1) DNA is found in _________________________ - CORRECT ANSWER✔✔- all cells
of humans except red blood cells
,(T1) DNA is a _______ template that can be _________ accurately - CORRECT
ANSWER✔✔- physical, copied
(T1) Humans have _______ pairs of chromosomes - CORRECT ANSWER✔✔- 23
(T1) Each chromosome is a ______________ - CORRECT ANSWER✔✔- long strand of
DNA
(T1) DNA's structure consists of ___________________ - CORRECT ANSWER✔✔- two
strands of connected nucleotides
(T1) DNA stands for - CORRECT ANSWER✔✔- deoxyribonucleic acid
(T1) To compress into chromosomes, DNA wraps around what? - CORRECT ANSWER✔✔-
proteins called histones
(T1) DNA is a - CORRECT ANSWER✔✔- nucleic acid
(T1) Humans have ______ chromosomes - CORRECT ANSWER✔✔- 46
(T1) Humans have about ______ genes - CORRECT ANSWER✔✔- 25,000
(T1) How many proteins come from your mother? Father? - CORRECT ANSWER✔✔- 23,
23
(T1) Just by looking at someone's chromosomes, you can tell their gender by looking at their
_______ chromosome - CORRECT ANSWER✔✔- 23rd
(T1) Just by looking at someone's chromosomes, you tell if they are a boy if their 23rd pair is
__________ - CORRECT ANSWER✔✔- XY
, (T1) Just by looking at someone's chromosomes, you tell if they are a girl if their 23rd pair is
__________ - CORRECT ANSWER✔✔- XX
A girl's 23rd pair of chromosomes is XX. This is known as the _________________ sex -
CORRECT ANSWER✔✔- homogametic
A boy's 23rd pair of chromosomes is XY. This is known as the _________________ sex -
CORRECT ANSWER✔✔- heterogametic
(T2) DNA's presence has been known since ___________, but its function hasn't always been
clear. - CORRECT ANSWER✔✔- 1874
(T2) Who did the pneumonia-mouse experiment? - CORRECT ANSWER✔✔- Frederick
Griffith
(T2) What year did Griffith do his experiment? - CORRECT ANSWER✔✔- 1928
(T2) Griffith's goal was to - CORRECT ANSWER✔✔- cure (vaccine) pneumonia
(T2) What were the two versions of pneumonia Griffith used? - CORRECT ANSWER✔✔-
R and S strains
(T2) R strain refers to the _________ strain - CORRECT ANSWER✔✔- rough
(T2) S strain refers to the _________ strain - CORRECT ANSWER✔✔- smooth
(T2) When Griffith gave the mice S bacteria, they - CORRECT ANSWER✔✔- died
(T2) When Griffith gave the mice R bacteria, they - CORRECT ANSWER✔✔- lived
(T2) When Griffith gave the mice killed S bacteria (heated), they - CORRECT
ANSWER✔✔- lived
Exam Questions and CORRECT Answers
(T1) What is a gene? - CORRECT ANSWER✔✔- A segment of DNA that produces a
protein thus determining a trait
(T1) What is a chromosome? - CORRECT ANSWER✔✔- A condensed or compact "rod" of
DNA that carries genetic information
(T1) What is DNA? - CORRECT ANSWER✔✔- helical molecule that carries the genetic
information of an organism and is passed from parent to offspring.
(T1) What is a genome? - CORRECT ANSWER✔✔- All the DNA in one cell of an
organism
(T1) What is a nucleus? - CORRECT ANSWER✔✔- The control center of the cell; contains
the genetic material
(T1) What is a nucleotide? - CORRECT ANSWER✔✔- A small subunit that makes up
DNA; building blocks for nucleic acids
(T1) List nucleotide, nucleus, genome, chromosome, gene, and DNA from smallest to largest.
- CORRECT ANSWER✔✔- nucleotide, gene, DNA, chromosome, nucleus, genome
(T1) DNA is the _________________ for most organisms - CORRECT ANSWER✔✔-
genetic material
(T1) DNA is found in _________________________ - CORRECT ANSWER✔✔- all cells
of humans except red blood cells
,(T1) DNA is a _______ template that can be _________ accurately - CORRECT
ANSWER✔✔- physical, copied
(T1) Humans have _______ pairs of chromosomes - CORRECT ANSWER✔✔- 23
(T1) Each chromosome is a ______________ - CORRECT ANSWER✔✔- long strand of
DNA
(T1) DNA's structure consists of ___________________ - CORRECT ANSWER✔✔- two
strands of connected nucleotides
(T1) DNA stands for - CORRECT ANSWER✔✔- deoxyribonucleic acid
(T1) To compress into chromosomes, DNA wraps around what? - CORRECT ANSWER✔✔-
proteins called histones
(T1) DNA is a - CORRECT ANSWER✔✔- nucleic acid
(T1) Humans have ______ chromosomes - CORRECT ANSWER✔✔- 46
(T1) Humans have about ______ genes - CORRECT ANSWER✔✔- 25,000
(T1) How many proteins come from your mother? Father? - CORRECT ANSWER✔✔- 23,
23
(T1) Just by looking at someone's chromosomes, you can tell their gender by looking at their
_______ chromosome - CORRECT ANSWER✔✔- 23rd
(T1) Just by looking at someone's chromosomes, you tell if they are a boy if their 23rd pair is
__________ - CORRECT ANSWER✔✔- XY
, (T1) Just by looking at someone's chromosomes, you tell if they are a girl if their 23rd pair is
__________ - CORRECT ANSWER✔✔- XX
A girl's 23rd pair of chromosomes is XX. This is known as the _________________ sex -
CORRECT ANSWER✔✔- homogametic
A boy's 23rd pair of chromosomes is XY. This is known as the _________________ sex -
CORRECT ANSWER✔✔- heterogametic
(T2) DNA's presence has been known since ___________, but its function hasn't always been
clear. - CORRECT ANSWER✔✔- 1874
(T2) Who did the pneumonia-mouse experiment? - CORRECT ANSWER✔✔- Frederick
Griffith
(T2) What year did Griffith do his experiment? - CORRECT ANSWER✔✔- 1928
(T2) Griffith's goal was to - CORRECT ANSWER✔✔- cure (vaccine) pneumonia
(T2) What were the two versions of pneumonia Griffith used? - CORRECT ANSWER✔✔-
R and S strains
(T2) R strain refers to the _________ strain - CORRECT ANSWER✔✔- rough
(T2) S strain refers to the _________ strain - CORRECT ANSWER✔✔- smooth
(T2) When Griffith gave the mice S bacteria, they - CORRECT ANSWER✔✔- died
(T2) When Griffith gave the mice R bacteria, they - CORRECT ANSWER✔✔- lived
(T2) When Griffith gave the mice killed S bacteria (heated), they - CORRECT
ANSWER✔✔- lived
