11. (a) (i) Name the sugar present in DNA - Leaving Cert Biology - Question 11 - 2019
Question 11
11. (a) (i) Name the sugar present in DNA.
(ii) Other than the sugar, give two structural differences between DNA and RNA.
(b) Protein synthesis is a complex proce... show full transcript
Worked Solution & Example Answer:11. (a) (i) Name the sugar present in DNA - Leaving Cert Biology - Question 11 - 2019
Step 1
Name the sugar present in DNA.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The sugar present in DNA is deoxyribose.
Step 2
Other than the sugar, give two structural differences between DNA and RNA.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
DNA is double-stranded while RNA is single-stranded.
DNA contains the base Thymine (T) whereas RNA contains Uracil (U) instead.
Step 3
Where does transcription occur in animal and plant cells?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Transcription occurs in the nucleus of both animal and plant cells.
Step 4
Where precisely in the cell does translation occur?
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Translation occurs in the ribosome.
Step 5
Name the three types of RNA involved in protein synthesis.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The three types of RNA involved in protein synthesis are:
Messenger RNA (mRNA)
Ribosomal RNA (rRNA)
Transfer RNA (tRNA)
Step 6
Describe the events that occur during translation, leading to the formation of a functional protein.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
During translation, mRNA (transcribed DNA code) is transported to a ribosome where tRNA molecules bring amino acids to the ribosome. The tRNA matches its anticodon with the corresponding codon on the mRNA. As amino acids are linked together, a polypeptide chain forms, folding into a functional protein.
Step 7
Explain the following terms used in genetics: 1. Sex linkage
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Sex linkage refers to the inheritance of traits that are determined by genes located on the sex chromosomes (X or Y).
Step 8
Explain the following terms used in genetics: 2. Heterozygous
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Heterozygous refers to having two different alleles for a trait, one dominant and one recessive.
Step 9
Explain the following terms used in genetics: 3. Genotype.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Genotype refers to the genetic makeup or constitution of an individual, particularly concerning a specific trait.
Step 10
What are the genotypes of the parents for both sex and haemophilia?
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The genotypes of the parents are: XNXn for the mother (carrier female) and XNY for the father (normal male).
Step 11
If person 7 has a carrier daughter, give the phenotype and full genotype of the daughter's father.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The daughter's father has the phenotype of a normal male and the full genotype is XNY.
Step 12
What was the chance of that couple having a carrier daughter?
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The chance of that couple having a carrier daughter is 50%.
Join the Leaving Cert students using SimpleStudy...
