WorksheetsDNA: The Code of Life
Total questions: 65
Worksheet time: 58mins
Each gene is located at a specific place on a(n) protein.
true
false
DNA synthesis is the process by which DNA copies itself
true
false
The process of DNA copying itself begins when the two sides of the DNA molecule unwind and separate
true
false
The genetic code is determined by the sizes of the nitrogen bases.
true
false
Nitrogen bases are molecules that contain nitrogen and other elements
true
false
The sides of a DNA molecule are made up of sugar molecules alternating with (a) molecules
What are the 4 nitrogenous bases?
adenine, thymine, cytoplasm, and guanine
adenine, thymine cytosine, and guanine
adenine, thymine, cytosine, and gylcerol
adenine, thymine, cytosine, and glucose
Franklin used x-ray imaging to determine the shape of the DNA molecule is
a cloverleaf
a braided rope
a pleated sheet
a twisted ladder
ATG TGA CAG
How many strands does DNA have?
Two
Seven
Three
One
How many strands does RNA have?
Five
Three
Two
One
What sugar makes up DNA?
Oxyribose sugar
Portion sugar
deoxiribose sugar
nuclear sugar
What is the long name for DNA?
deoxynucleic acid
deoxyribonucleic acid
denatured ribonucleic acid
deoxyribonuclear acid
In DNA, adenine always pairs with (a) .
The process of making proteins is called protein (a) .
RNA is a double strand
true
false
Changes to the type of order of amino acids can result in a different protein
true
false
A transfer RNA with the bases CGA will line up with a section of messenger RNA with the bases CGU
true
false
The use of drugs to treat disease is called (a) .
A mutation can be passed to offspring only if it takes place in a (a) cell.
Cancer can be treated with surgery, (a) , and drugs that destroy the cancer cells.
A mutation can occur if a base pair is (a) , deleted, or substituted for another.
The body cells of humans contain 46 pairs of chromosomes
true
false
A widow's peak is a trait controlled by many genes.
true
false
In the case of sex-linked traits, only females can be carriers
true
false
The only thing determined by the genes carried on a sex chromosome is a person's sex.
true
false
Colorblindness is a trait controlled by a dominant allele on the X chromosome
true
false
The sex chromosome carried by a human egg will always be a(n) (a) chromosome.
A person who has one recessive and one dominant allele for a trait is called a(n) (a) .
In the process of cloning, breeders cross two genetically different individuals
true
false
Crossing two individuals that have similar desirable characteristics is called genetic engineering
true
false
In selective breeding, organisms with desired traits are chosen to be parents of the next generation
true
false
The process by which genes from one organism are transferred into the DNA of another organism is called inbreeding.
true
false
Through gene therapy, a genetic disorder may be corrected by inserting copies of a gene directly into a person's cells
true
false
Hybridization results in an organism that has exactly the same genes as the organism from which it was produced
true
false
Some people are concerned that (a) of crops may cause harm to the environment or health problems in humans.
By using a stem cutting form an African violet, it is easy to produce a new plant, which is a (a) .
A hybrid organism has two different (a) for a trait.
DNA has four bases: A, C, G, and T. The base A always pairs with ______, and C always pairs with ______.
A, C
C, G
C, T
T, G
(a) carries the information from the genetic code out of the nucleus and into the cytoplasm.
A mass of cancer cells is called a (a) .
A mutation is a change in (a) .
Which human trait is controlled by a single gene with multiple alleles?
height
dimples
skin color
blood type
What is the main function of messenger RNA?
it adds amino acids to a growing protein chain
it carries the information necessary for protein synthesis
it carries the information necessary for DNA replication
it carries information that causes deletions and other mutations
What determines a single inherited trait of an individual?
one pair or many pairs of genes
a disrupted cell cycle
one half of the replicated DNA strand
amino acids joined to form proteins
Which of the following is a selective breeding technique that can produce organisms more likely to survive in a given environment?
mutation
forensics
inbreeding
gene therapy
