ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

How many strands does an RNA molecule usually have?

1. ATwo
2. BFour
3. COne
4. DThree

What is a chromosomal deletion?

1. AThe swap of a single DNA base
2. BA piece of chromosome that is turned around
3. CAn extra copy of a whole chromosome
4. DThe loss of a piece of a chromosome

What is the correct order of levels of organisation, from smallest to largest?

1. ACell, organ, tissue, organism, organ system
2. BTissue, cell, organ, organism, organ system
3. COrgan, tissue, cell, organ system, organism
4. DCell, tissue, organ, organ system, organism

How does cytokinesis differ between animal cells and plant cells?

1. AOnly animal cells carry out cytokinesis
2. BAnimal cells build a cell plate; plant cells pinch in with a furrow
3. COnly plant cells carry out cytokinesis
4. DAnimal cells pinch in with a furrow; plant cells build a cell plate

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the stroma
2. BIn the cell wall
3. CIn the outer membrane
4. DIn the thylakoid membranes

There are 64 possible codons but only about 20 amino acids. What does this tell you about the genetic code?

1. AEach codon codes for more than one amino acid at the same time
2. BOnly 20 of the codons are ever used
3. CMost amino acids are coded for by more than one codon
4. DEach amino acid has exactly three codons

A new infectious agent passes through filters that trap bacteria, does not grow on nutrient agar and multiplies only inside living cells. What is it most likely to be?

1. AA virus
2. BA protozoan
3. CA fungus
4. DA bacterium

Cyanide stops mitochondria from making ATP. Which process in the affected cells would stop first?

1. ASimple diffusion of oxygen into the cell
2. BFacilitated diffusion of glucose down its gradient
3. COsmosis of water across the membrane
4. DPumping of Na⁺ and K⁺ by the sodium-potassium pump