ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

How many micrometres (µm) are in one millimetre?

1. A1 000 000
2. B10
3. C100
4. D1000

Which sugar is found in DNA?

1. ADeoxyribose
2. BRibose
3. CGlucose
4. DFructose

What is the aim of gene therapy?

1. ATo give a patient antibiotics through a vein to kill a virus
2. BTo remove all the genes from a patient's cells
3. CTo change the patient's blood type
4. DTo treat a disease by adding a working copy of a faulty gene

What is a chromosomal translocation?

1. AA piece of a chromosome is copied twice and stays in the same place
2. BOne DNA base is replaced by another base
3. CA piece of one chromosome attaches to a non-matching chromosome
4. DA piece of a chromosome is flipped around in place

A study finds a positive correlation between hours of exercise and lung capacity. What does this mean?

1. AAs exercise increases, lung capacity tends to increase
2. BExercise has been proven to cause higher lung capacity
3. CThere is no link between the two variables
4. DAs exercise increases, lung capacity tends to decrease

What is the role of cholesterol in animal cell membranes?

1. AIt stores the cell's genetic information
2. BIt forms a rigid wall around the cell
3. CIt carries glucose molecules across the membrane into the cell
4. DIt keeps membrane fluidity stable as temperature changes

Why do cells get far more ATP from glucose when oxygen is present than when it is absent?

1. AWithout oxygen only glycolysis runs, giving a net of 2 ATP per glucose
2. BOxygen itself is converted into ATP in the mitochondria
3. CWithout oxygen the Krebs cycle runs faster but makes less ATP
4. DWithout oxygen, glucose cannot enter the cell or be broken down at all

A point mutation changes a codon in the middle of a gene into a stop codon. What is the most likely effect?

1. AA shortened protein that usually does not work
2. BNo change, because stop codons are ignored
3. CA protein with one different amino acid
4. DA protein that is longer than normal