ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

Which codon signals the start of translation in most genes?

1. AUAG
2. BUGA
3. CAUG
4. DUAA

What is the resolution of a microscope?

1. AHow many times larger it makes the image of the specimen
2. BHow large the field of view is
3. CHow bright the image appears
4. DIts ability to show two close points as separate

What does it mean that a cell membrane is selectively permeable?

1. AIt lets no substance cross at all
2. BIt lets some substances cross but not others
3. CIt lets only water molecules cross
4. DIt lets every substance cross freely in both directions

When plotting the results of an experiment, which variable usually goes on the y-axis?

1. AThe independent variable
2. BThe controlled variable
3. CThe dependent variable
4. DThe time the experiment started

What happens to a protein when it is denatured?

1. AIt turns into a carbohydrate
2. BIt loses some of its amino acids but keeps its folded shape
3. CIt becomes more active than before
4. DIt loses its 3D shape but keeps its amino acid sequence

What does it mean that a person's blood is Rh negative?

1. ATheir red cells lack the RhD antigen
2. BTheir plasma has no antibodies at all
3. CTheir red cells carry extra RhD antigen
4. DTheir red cells lack the A and B antigens

A single-celled microbe has a nucleus and a cell wall made of chitin, and it reproduces by budding. What is it most likely to be?

1. AA virus
2. BAn amoeba
3. CA bacterium
4. DA yeast

An mRNA reads AUG-UUU-GGC-UAA. How many amino acids are in the protein made from it?

1. A3
2. B12
3. C4
4. D2