W1 MCQs Flashcards
Which of the following is true when considering sperm cells, epithelial cells, fibroblasts and oocytes?
All these cells are the same size and contain the same organelles
These cells can vary in size by over 100000 x and contain the same organelles
These cells can vary in size by up to 10 x and contain the same organelles
The cells can vary in size by over 100000 x and contain different organelles to each other
These cells are the same size and contain different organelles to each other
The cells can vary in size by up to 10 x and contain different organelles to each other
These cells can vary in size by over 100000 x and contain the same organelles
The ‘central dogma’ is”:
DNA → transcription → RNA → translation → protein
DNA → translation → RNA → transcription → protein
Protein → transcription → RNA → translation → DNA
RNA → transcription → DNA → translation → protein
DNA → transcription → protein → translation→ RNA
RNA → transcription → protein → translation → DNA
RNA → translation → protein → transcription → DNA
Protein → translation → DNA → transcription → RNA
DNA → transcription → RNA → translation → protein
If a child has one grandparent on the maternal side and one grandparent on the paternal side who carries the Cystic Fibrosis gene (and the other two grandparents do not) what are the chances that the child will have Cystic Fibrosis?
100%
50%
25%
12.5%
6.25%
0%
6.25%
If red and white flowers are co-dominant, then a red x white daughter flower will be:
Red or white
Patterned containing red and white
Red
White
Pink
Patterned containing red and white
Heredity information is stored in:
DNA + RNA
RNA
DNA + protein
Protein
DNA + RNA + protein
RNA + protein
DNA
DNA
Which statement is true:
Crick and Watson….
Discovered nuclein
First used the term DNA
Identified the phosphate, sugar, base structure of DNA
Found DNA contains inherited information
Identified the bases of DNA are A, C, G, T
Solved the structure of DNA as a double helix
Solved the structure of DNA as a double helix
In DNA…
Phosphates are joined by strong covalent bonds, bases are joined by strong covalent bonds
Phosphates are joined by strong covalent bonds, bases are joined by weak hydrogen bonds
Phosphates are joined by weak hydrogen bonds, bases are joined by strong covalent bonds
Phosphates are joined by weak hydrogen bonds, bases are joined by weak hydrogen bonds
Phosphates are joined by strong covalent bonds, bases are joined by weak hydrogen bonds
Adenine shares how many bonds with thymine?
0
1
2
3
4
2
The complementary strand of 5’ TAGCGTTA 3’ is:
3’ TAACGCTA 5’
5’ TAGC 3’
5’ TAGCGTTA 3’
3’ ATCGCAAT 5’
3’ TAGCGTTA 5’
5’ ATCGCAAT 3’
3’ ATCGCAAT 5’
In the X-ray crystallography image produced by Rosalind Franklin, what is the evidence for the helix structure of DNA?
The dark smears at the top and bottom
The X pattern
The helix structure cannot be inferred from this image
The missing spots
The X pattern
How many types of bases are there in DNA?
3 or less
4
5
6 or more
6 or more
If 40% of bases in a DNA molecule are guanine, what % are adenine?
40%
30%
20%
10%
10%
Which of the following are both pyrimidines?
A and T
C and G
G and T
C and T
A and C
A and G
C and T
What is the difference between a nucleoside and a nucleotide?
Nucleotide is base + ribose; nucleoside is base + ribose + phosphate
Nucleoside is base + phosphate; nucleotide is base+ ribose + phosphate
Nucleoside is base + ribose; nucleotide is base + ribose + phosphate
Nucleoside is the side view of a nucleotide
Nucleotide is base + phosphate; nucleoside is base + ribose + phosphate
Nucleoside is base + ribose; nucleotide is base + ribose + phosphate
What are the dimensions of one full turn of DNA?
20nm wide, 34nm high
3.4 nm wide, 3.4 nm high
3.4 nm wide, 2 nm high
2nm wide, 3.4 nm high
2 nm wide, 34 nm high
2 nm wide, 2nm high
2nm wide, 3.4 nm high
