ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What is the main material in the cell wall of bacteria?

1. AKeratin
2. BCellulose
3. CChitin
4. DPeptidoglycan

What are the bacteria called that normally live on the skin and in the gut without causing disease?

1. APrions
2. BPathogens
3. CNormal flora
4. DVectors

Which pigment absorbs light energy for photosynthesis?

1. AKeratin
2. BChlorophyll
3. CHaemoglobin
4. DMelanin

Why must human gametes be haploid?

1. ASo that the gametes can divide quickly by mitosis
2. BSo that the zygote has the normal number of 46 chromosomes
3. CSo that the zygote has twice the normal number of chromosomes
4. DSo that the gametes can make more proteins

What is a bacterial endospore?

1. AA hair-like structure used to swim towards food
2. BA tough, dormant form that survives heat, drying and many disinfectants
3. CA reproductive cell that bacteria use to make new colonies quickly
4. DA small ring of DNA that carries antibiotic resistance genes

Red-green colour blindness is X-linked recessive. A colour-blind woman (XᵇXᵇ) has children with a man with normal colour vision (XᴮY). What fraction of their sons is expected to be colour-blind?

1. AAll
2. BOne half
3. CNone
4. DOne quarter

A plant is kept in the dark to use up its starch. One leaf is then sealed in a bag with a chemical that absorbs CO₂, and the plant is placed in light. Later, that leaf has no starch, but the other leaves do. What does this show?

1. ACarbon dioxide is needed for photosynthesis
2. BOxygen is needed for photosynthesis
3. CChlorophyll is needed for photosynthesis
4. DLight is needed for photosynthesis

A plant that is AaBb is crossed with an AaBB plant. A and B are dominant, and the genes assort independently. What fraction of the offspring show both dominant traits?

1. A1/2
2. B9/16
3. C3/4
4. D1/4