Structure (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
What are the three components of every DNA nucleotide?
What are the three components of every DNA nucleotide?
Phosphate, deoxyribose, base
In DNA, which base does Adenine always pair with?
In DNA, which base does Adenine always pair with?
Thymine
How many hydrogen bonds hold Guanine and Cytosine together in DNA?
How many hydrogen bonds hold Guanine and Cytosine together in DNA?
3 hydrogen bonds
If a DNA strand is A-T-G-C, what is the complementary strand?
If a DNA strand is A-T-G-C, what is the complementary strand?
T-A-C-G
What forms the 'rungs' of the DNA ladder structure?
What forms the 'rungs' of the DNA ladder structure?
Paired bases
Which nitrogenous base is found in RNA but NOT in DNA?
Which nitrogenous base is found in RNA but NOT in DNA?
Uracil
What type of sugar is found in RNA nucleotides?
What type of sugar is found in RNA nucleotides?
Ribose
How many strands does RNA typically have compared to DNA?
How many strands does RNA typically have compared to DNA?
RNA is single-stranded
In RNA, which base does Adenine pair with?
In RNA, which base does Adenine pair with?
Uracil
What percentage of a chromosome is protein?
What percentage of a chromosome is protein?
60%
How many chromosomes do humans have in total?
How many chromosomes do humans have in total?
46
What are genes?
What are genes?
Specific sections of DNA on chromosomes
Where can RNA be found in the cell?
Where can RNA be found in the cell?
Nucleus and cytoplasm