Quiz Expert

Questions answered: 0 / 23
What is a genome 'sequence'?
Check your answer

The human genome is composed of 3 billion nucleotides called A, G, T or C. Here is an example of a fragment of the genome: …ATTGCTTTCAAACTTTT… If you read this text at the speed of 2 letters per second, you would need about 50 years to read it all!

Which of the following propositions is wrong?
Check your answer
Proteins carry out all kinds of different tasks. Which of the following tasks do not involve proteins?
Check your answer
Which of the three trees of life below is correct:
Check your answer
A gene is not:
Check your answer
Tick what is wrong:
Check your answer
In evolution, the more distant species are, the more differences there are in their protein sequences. Knowing this, which one of the following combinations is correct?
Check your answer
Tick what is wrong:
Check your answer
Which of the following describes the structure of DNA?
Check your answer
Though human beings have (almost) identical genomes, there are about 3 million differences between the genomes of two people! Which of the following propositions is wrong?
Check your answer
What is bioinformatics?
Check your answer
On earth, all forms of life come from a common ancestor (called LUCA) and are therefore all related. As a result, is it possible to say that ‘man descended from the ape’?
Check your answer
These days, it is still possible to:
Check your answer
If you want to be a bioinformatician, you need to:
Check your answer
What is it that reveals a person's identity in their hair?
Check your answer
Tick the wrong answer:
Check your answer
Here is the sequence of a protein fragment, \'GATGAPGIAGAP\', which was found in the bone of a Tyrannosaurus. To which fragment below is it the most similar?
Check your answer

Tyrannosaurus collagen is very similar to a chicken\'s! What can be inferred from such observations is that a species of dinosaur must have survived the mass extinction which occurred about 250 million years ago. A descendent of one of these dinosaurs is expected to be the common ancestor of all birds.

Tick the wrong answer:
Check your answer
Every cell and each tissue (liver, heart, brain...) produce different proteins. Why?
Check your answer
There are a number of proteins which cause serious diseases when they are defective. Among the diseases below, which is not caused by at least one defective protein?
Check your answer

AIDS is a disease brought on by a virus, and is therefore not caused by the malfunction of one or more of our proteins.

Down syndrome is caused by the presence of 3 copies of chromosome 21 and is the most well known trisomy in humans. Why?
Check your answer

Babies carrying other types of trisomy are usually stillborn or die shortly after birth.

The integrity of our genes is protected by our body because they are essential to life. However, certain genes are sometimes modified. What could be the consequences?
Check your answer
Some genetic diseases (colour blindness, hemophilia, etc.) are more frequent in boys than in girls. Why?
Check your answer

The genes that cause these diseases are on chromosome X, of which every girl has two copies in each of her cells (XX) and boys have one copy (XY). If a gene is ‘ill’, girls can usually ‘compensate’ with the other copy, while boys cannot.

Question on chromosome1
1
Question on chromosome2
2
Question on chromosome3
3
Question on chromosome4
4
Question on chromosome5
5
Question on chromosome6
6
Question on chromosome7
7
Question on chromosome8
8
Question on chromosome9
9
Question on chromosome10
10
Question on chromosome11
11
Question on chromosome12
12
Question on chromosome13
13
Question on chromosome14
14
Question on chromosome15
15
Question on chromosome16
16
Question on chromosome17
17
Question on chromosome18
18
Question on chromosome19
19
Question on chromosome20
20
Question on chromosome21
21
Question on chromosome22
22
Question on chromosomeXY
XY
CHROMOSOME WALK
Scroll Up