Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is a mutagen?

1. AAn enzyme that copies DNA
2. BA cell that divides without control
3. CSomething that can cause changes in DNA
4. DA protein that repairs damaged DNA

What is an allele?

1. AA protein made from a gene
2. BA section of DNA between genes
3. CA different version of the same gene
4. DA pair of matching chromosomes from each parent

What are round (spherical) bacteria called?

1. ABacilli
2. BVibrios
3. CSpirilla
4. DCocci

White blood cells called macrophages engulf and digest bacteria. Which organelle would you expect them to have in large numbers?

1. ASmooth endoplasmic reticulum
2. BChloroplasts
3. CCentral vacuoles
4. DLysosomes

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AA fungal cell
2. BA bacterial cell
3. CAn animal cell
4. DA plant cell

What happens during telophase of mitosis?

1. AThe chromosomes line up across the middle of the cell
2. BThe DNA is copied for the next division
3. CThe sister chromatids are pulled apart
4. DA nuclear envelope forms around each set of chromosomes

Which parent's gamete decides the biological sex of a human baby, and why?

1. ABoth equally, because each gives one Y chromosome
2. BThe mother's, because an egg carries either an X or a Y
3. CThe father's, because a sperm carries either an X or a Y
4. DThe mother's, because she gives two X chromosomes

A patient with type A blood is given type B red blood cells by mistake. What is the cause of the reaction that follows?

1. AThe donor's B antigens destroy the patient's white blood cells
2. BAnti-B antibodies in the patient's plasma attack the donor cells
3. CThe patient's A antigens dissolve the donor's haemoglobin
4. DAnti-A antibodies on the donor cells attack the patient's plasma