ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

How many micrometres (µm) are in one millimetre?

1. A100
2. B1000
3. C1 000 000
4. D10

In biology, what is a clone?

1. AAn organism that carries genes from two different species
2. BA cell with an extra chromosome
3. CA genetically identical copy of an organism, cell or gene
4. DAn offspring of two different parents

What are the parts of a triglyceride (a fat molecule)?

1. AThree glucose units and one phosphate
2. BOne glycerol and three fatty acids
3. CTwo glycerols and one fatty acid
4. DOne amino acid and three fatty acids

Why must human gametes be haploid?

1. ASo that the gametes can make more proteins
2. BSo that the zygote has twice the normal number of chromosomes
3. CSo that the gametes can divide quickly by mitosis
4. DSo that the zygote has the normal number of 46 chromosomes

What does the enzyme lipase break down?

1. AProteins into amino acids and peptides
2. BStarch into sugars
3. CFats into fatty acids and glycerol
4. DDNA into nucleotides

لُقّح أبوان خليطا الأليلات (Aa × Aa). ما نسبة الأنماط الجينية المتوقعة؟

1. A3 AA : 1 aa
2. B1 AA : 1 aa
3. C1 AA : 2 Aa : 1 aa
4. D2 AA : 1 Aa : 1 aa

A large molecule contains carbon, hydrogen, oxygen, nitrogen and phosphorus. Its monomers each have a sugar and a base. What type of molecule is it?

1. AA nucleic acid
2. BA carbohydrate
3. CA lipid
4. DA protein

Two populations of one species live on separate islands for many thousands of years. When brought together, they can no longer interbreed. What has happened?

1. AArtificial selection by humans
2. BHybrid vigour from crossbreeding
3. CSpeciation after geographic isolation
4. DHomeostasis in both populations