WorksheetsUnit 4: Gene Expression Part 1
Total questions: 20
Worksheet time: 27mins
Genes are expressed in organisms as...
Carbohydrates
Proteins
Lipids
Amino acids
The first step in protein synthesis is...
Transcription in the nucleus
DNA replication in the nucleolus
Translation in the cytoplasm
Hydrogen-bond breaking in the cell
The nucleus is specially structured to allow mRNA to leave due to the presence of (a) in the nuclear membrane.
All cells carry the entire genome of an organism apart from:
hair follicles and gametes.
skin cells and gametes.
gametes and red blood cells.
gametes.
Gene expression is the ability for a gene to be:
in the genome.
transcribed.
non-coding.
a dominant allele.
Which RNA type is the result of transcription?
tRNA
Non-coding RNA
rRNA
mRNA
Which of the following is correct?
Nucleotide triplets code a single amino acid.
Each amino acid codes a nucleotide.
Each nucleotide codes an amino acid.
Amino acid triplets code a single nucleotide.
Translation is a process where:
a polypeptide sequence is produced from a sequence of rRNA codons.
a polypeptide sequence is produced from a sequence of tRNA codons.
a polypeptide sequence is produced from a sequence of mRNA codons.
a DNA nucleotide sequence is used to produce mRNA codon sequence.
Transcription factors are produced by:
coding DNA.
structural genes.
non-coding DNA and structural genes.
non-coding DNA.
Epigenetics modulates genetic expression:
differently in each cell in the body.
by altering the genome.
in response to only intracellular processes.
consistently throughout an individual's life.
Hox genes are the most powerful control on the morphology of animals. They do this by:
being highly conserved.
coding for the body plan.
coding body segmentation.
regulating transcription of other genes.
The homeobox gene is highly conserved. This shows that:
it is a sequence that is unlikely to mutate.
its role in gene expression is vital to survival.
it is coded for in several places.
it is very powerful; therefore maintained by evolution.
The SRY gene codes for a transcription factor which:
begins the process that turns a female foetus into a male foetus.
ensures that development begins as a female foetus.
ensures that development begins as a male foetus.
begins the process that turns a male foetus into a female foetus.
