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WorksheetsDNA Structure & Function
Total questions: 25
Worksheet time: 49mins
The sides, or "railing", of DNA molecules are made up of:
Sugar
Phosphate
Sugar and Phosphate
Sugar and Nitrogen bases
Which nitrogenous base ALWAYS pairs with Thymine
Adenine
Thymine
Guanine
Cytosine
Which nitrogen base ALWAYS pairs with Guanine?
Adenine
Thymine
Guanine
Cytosine
How many PAIRS of chromosomes are in a human's BODY cells?
23
46
64
92
How many chromosomes are in a human BODY cell?
23
46
64
92
The passing on of traits from an organism to its offspring is known as:
Biology
Chemistry
Neoteny
Heredity
Cancer occurs from permanent changes in the DNA known as:
Mutations
Karyotypes
Genetics
Diploids
Crickets have 16 chromosomes in their DIPLOID cells (2n = 16).
How many chromosomes are in their HAPLOID cells (n = ?)
4
8
16
32
How many pairs of chromosomes does this rat have?
18
19
36
38
Is this person's karyotype male or female?
Male
Female
Mutations are usually harmful, but can sometimes be helpful.
True
False
What shape is DNA?
Double barrel
Double helix
Forward helix
Triple helix
Which of these is NOT a nitrogen base of DNA?
Tyrosine
Adenine
Guanine
Cytosine
What are the tightly-wound structures that are found in the nucleus and contain genetic information?
Mutations
Genetics
Chromosomes
Genes
Genes hold the "recipes" to make _____, which allow the body to develop and function in different ways.
Bacteria
Amino Acids
Proteins
DNA
How many chromosomes are in a human's GAMETE?
23
46
64
92
In humans, which chromosome combination typically results in MALE offspring?
XX
XY
YY
None of these
Where is DNA found?
Nucleus of a cell
Cytoplasm of a cell
Ribosome of a cell
In the red blood cells
What does DNA stand for?
Deoxyribonucleic acid
Deribonucleic acid
Denitrogenous acid
Diribonucleic acid
Which process is DNA NOT responsible for doing?
Instructing cells to grow the body
Producing certain traits
Determining parts of your personality
Teaching you how to read
Rank these parts of genetic material from LARGEST to SMALLEST.
Chromosomes (largest),
DNA,
Gene,
Nucleotide (smallest)
Chromosome (largest),
Nucleotide,
DNA,
Gene (smallest)
Gene (largest),
Nucleotide,
DNA,
Chromosome (smallest)
DNA (largest),
Chromosome,
Gene,
Nucleotide (smallest)
Mutations that occur in the gametes are ______, and mutations that occur in the body cells are ______.
heritable ; NOT heritable
NOT heritable ; heritable
heritable ; heritable
NOT heritable ; NOT heritable
What is the process of DNA making a copy of itself to pass onto a new cell called?
Transcription
Translation
Replication
Manifestation
When 2 new molecules of DNA are formed, each is a(n) ________________ of the original DNA molecule.
exact copy
unique copy
mutated copy
split copy
DNA is found in living or once-living things.
Which of these does NOT contain DNA?
Fire
Zygote
Salad
Bones
