2127796
Beschreibung
Quiz von Georgia Knight, aktualisiert more than 1 year ago
|
Erstellt von Georgia Knight
vor etwa 9 Jahre
|
|
Frage 1
Frage
DNA is the chemical that determines inherited characteristics and it contains vast amounts of information in the form of genetic code
Antworten
- True
- False
Frage 2
Frage
What is the structure of a DNA molecule?
Antworten
-
helical
-
double helix
-
pleated sheet
Frage 3
Frage
What three components is a nucleotide of DNA made up of?
Antworten
-
a variable group
-
a phosphate group
-
a deoxyribose sugar
-
an organic base (C, T, A or G)
-
a hydrocarbon
Frage 4
Frage
The single ring bases are?
Antworten
-
C
-
G
-
A
-
T
Frage 5
Frage
The double ring bases are?
Antworten
-
C
-
G
-
A
-
T
Frage 6
Frage
DNA is made up of two strands of polynucleotides. How do the nucleotides join to become polynucleotides?
Antworten
-
Hydrogen bonds
-
Condensation Reaction between phosphate group of one nucleotide and deoxyribose of another.
-
Polar attraction
Frage 7
Frage
Which base does cytosine pair with?
Antworten
-
adenine
-
thymine
-
guanine
Frage 8
Frage
What base does thymine pair with?
Antworten
-
adenine?
-
guanine?
-
cytosine?
Frage 9
Frage
The organic bases form the structural backbone of DNA
Antworten
- True
- False
Frage 10
Frage
What is the function of DNA?
Antworten
-
To pass genetic information from cell to cell and generation to generation.
-
To provide energy for the cell.
-
To make organic bases.
Frage 11
Frage
How is the DNA molecule adapted to carry out its functions? (4 points)
Antworten
-
It is very stable and can pass from generation to generation without changing.
-
It is flexible so can be easily changed.
-
It's two strands are only joined with H bonds which allow them to separate for DNA replication.
-
The two strands are joined with H bonds that are strong and prevent the strands from separating.
-
The molecule is extremely large so carries an immense amount of genetic information.
-
The structural backbone protects the genetic information from corruption.
-
The molecule is very small so lots of them can fit in a small space.
Frage 12
Frage
What is a gene?
Antworten
-
A sequence of DNA bases that determines a polypeptide (a sequence of amino acids).
-
A molecule that contains all the genetic information of a cell.
-
A substance made up of DNA
Frage 13
Frage
What are introns?
Antworten
-
Sections of DNA that don't code for amino acids.
-
Amino acids.
-
Three bases that code for an amino acid.
Frage 14
Frage
The triplet code can be read in either direction of the DNA strand
Antworten
- True
- False
Frage 15
Frage
The start of a sequence of the triplet code is always the same: the amino acid 'methionine'.
Antworten
- True
- False
Frage 16
Frage
Stop codes are triplet codes that don't code for an amino acid, but the end of a polypeptide chain.
Antworten
- True
- False
Frage 17
Frage
The triplet code is only specific to humans.
Antworten
- True
- False
Frage 18
Frage
Prokaryotic cells don't have chromosomes as their DNA molecules are smaller and not associated with protein molecules
Antworten
- True
- False
Frage 19
Antworten
- True
- False
Frage 20
Frage
The DNA helix is wound around proteins to hold it in position.
Antworten
- True
- False
Frage 21
Frage
A chromosome contains a single molecule of DNA.
Antworten
- True
- False
Frage 22
Frage
How many chromosomes do humans have?
Antworten
-
78
-
46
-
23
-
48
Frage 23
Frage
A homologous pair of chromosomes determine the same genetic characteristics.
Antworten
- True
- False
Frage 24
Frage
What are different forms of a gene called?
Antworten
-
alleles
-
chromosomes
-
haploid cells
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.