ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is cell differentiation?

1. AThe process by which DNA is copied
2. BThe process by which cells die on purpose
3. CThe process by which cells become specialised
4. DThe process by which a cell divides into two

Which codon signals the start of translation in most genes?

1. AAUG
2. BUAG
3. CUAA
4. DUGA

What is the R group of an amino acid?

1. AThe side chain that differs between amino acids
2. BThe peptide bond between two amino acids
3. CThe carboxyl group at one end
4. DThe amino group that is shared by all amino acids

What is a random sample?

1. AA group chosen because they are likely to support the hypothesis
2. BA group made only of people who volunteer to take part
3. CA group chosen by the researcher because they are easy to reach and willing
4. DA group where everyone in the population has an equal chance of being chosen

Why does ice float on liquid water?

1. AIce contains more air than liquid water
2. BIce molecules are lighter than liquid water molecules
3. CIce is denser than liquid water
4. DHydrogen bonds hold ice in an open, less dense structure

Clostridium tetani grows in deep puncture wounds but is killed by oxygen. How is this bacterium described?

1. AA facultative anaerobe
2. BAn obligate aerobe
3. CAn obligate anaerobe
4. DA photosynthetic bacterium

تحتوي عينة DNA على 30% أدينين. ما النسبة المئوية لقواعدها من الغوانين؟

1. A40%
2. B70%
3. C30%
4. D20%

أثناء الانقسام الاختزالي، فشل زوج من الصبغيات في الانفصال. ماذا قد ينتج عن ذلك؟

1. Aأمشاج بضعف عدد الجينات تمامًا على كل صبغي
2. Bأمشاج متطابقة وراثيًا مع الخلية الأم
3. Cأمشاج بصبغي زائد أو ناقص
4. Dأمشاج لا يمكن أن تحتوي على أي DNA