Phiếu bài tập Sinh học cho kỳ thi đầu vào điều dưỡng có đáp án

What is the R group of an amino acid?

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

In biology, what is a clone?

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

Phát biểu nào mô tả vi khuẩn?

1. AChúng không phải tế bào mà là các hạt protein và DNA
2. BChúng là sinh vật đa bào như thực vật
3. CChúng là sinh vật nhân sơ đơn bào
4. DChúng là sinh vật nhân thực đơn bào có nhân

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

What happens when a ribosome reaches a stop codon on the mRNA?

1. ATranslation ends and the protein is released
2. BThe ribosome goes back to the start codon
3. CA special amino acid is added to end the chain
4. DThe mRNA is copied back into DNA

Why do root hair cells have long, thin extensions?

1. ATo increase the surface area for absorbing water
2. BTo store starch for the winter
3. CTo anchor the plant firmly against strong winds and rain
4. DTo carry out photosynthesis underground

Which statement correctly compares DNA replication and transcription?

1. ABoth take place on ribosomes in the cytoplasm
2. BReplication makes RNA from DNA; transcription makes DNA from RNA
3. CReplication copies all the DNA; transcription copies one gene
4. DBoth use thymine and deoxyribose in the new strand

Một mạch khuôn DNA đọc là 3'-TACGGA-5'. mRNA tạo ra từ nó là gì?

1. A5'-TACGGA-3'
2. B5'-ATGCCT-3'
3. C5'-UACGGA-3'
4. D5'-AUGCCU-3'