1.
Which type of molecule contains genetic information that is passed from parents to offspring?
A
Protein molecules
B
Carbohydrate molecules
C
Fat molecules
D
DNA molecules
Loading practice questions
21 practice sets · Page 1 of 2
Which type of molecule contains genetic information that is passed from parents to offspring?
Protein molecules
Carbohydrate molecules
Fat molecules
DNA molecules
Which of the following statements about double-stranded DNA is false?
The helix has two grooves called the major groove and the minor groove.
The bases are on the outside of the helix.
The backbone contains alternating ribose sugar and phosphate groups.
The two strands have an antiparallel orientation.
Which of the following describes the relationship between chromosomes and DNA molecules?
Each DNA molecule is made of more than one chromosome.
There is no relationship between chromosomes and DNA molecules.
Each chromosome is made of a single DNA molecule.
Each chromosome is made of more than one DNA molecule.
Which of the following contain hereditary information?
Genes but not chromosomes
Neither chromosomes nor genes
Chromosomes and genes
Chromosomes but not genes
Which of the following bases pairs with guanine?
Cytosine
Thymine
Adenine
Guanine
Which of the following are found in both DNA and RNA?
phosphate groups, guanine, and cytosine
phosphate groups, guanine, and thymine
ribose, phosphate groups, and adenine
deoxyribose, phosphate groups, and guanine
Which nucleotide in the figure below indicates the nucleic acid above is RNA?
Uracil
Cytosine
Guanine
Adenine
What is the genetic code?
The sequence of subunits in a DNA molecule
The number of subunits in a DNA molecule
The sequence of subunits in a protein molecule
The number of subunits in a protein molecule
What are the subunits that make up DNA molecules?
Amino acids
Nucleotides
Fatty acids
Proteins
There are 64 codons and 20 amino acids. Which of the following is true?
Several different codons can specify the same amino acid.
Each codon specifies a different amino acid.
Some amino acids have no link to a codon.
Each amino acid is specified by only one codon.
The nitrogenous base is linked to the ribose or deoxyribose sugar via a
Glycosidic bond
Amide bond
Hydrogen bond
Phosphoanhydride bond
In humans, where does DNA replication take place?
Cytoplasm
Ribosomes
Nucleus
Cell membrane
In eukaryotes
Transcription takes place in the cytoplasm, and translation takes place in the nucleus.
Transcription takes place in the nucleus, and translation takes place in the cytoplasm.
Proteins are produced.
Transcription and translation both take place in the nucleus.
Humans, butterflies, and trees are all living things. In which of these organisms would you find DNA molecules?
Only in humans
Only in humans and butterflies
In humans, butterflies, and trees
In none of these organisms
How many amino acids are coded for the strand of mRNA show below? Assume the reading frame begins with the first nucleotide.
1
2
3
6
Genomic DNA is .............resulting in the production of ............
Transcribed, mRNA
Translated, tRNA
Transcribed, DNA
Translated, protein
Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram on the right. Why can bacteria recognize a human gene and then produce a human protein?
DNA replication in bacteria and humans is the same.
Bacterial cells contain the same organelles as human cells.
The basic components of DNA are the same in humans and bacteria.
Bacterial cells and human cells contain the same kind of chromosomes.
During translation, the type of amino acid that is added to the growing polypeptide depends on the
codon on the mRNA and the anticodon on the rRNA.
anticodon on the mRNA and the anticodon on the tRNA.
anticodon on the rRNA and the codon on the mRNA.
codon on the mRNA and the anticodon on the tRN
DNA molecules are made up of subunits called nucleotides that are linked together. How many different types of nucleotides are used to make DNA molecules?
One type
Two types
Three types
Four types
...........is the adaptor that is key to converting the triplet codons of mRNA into the protein polymers
rRNA
mRNA
siRNA
tRNA