ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What do receptor proteins in the cell membrane do?

1. AThey digest bacteria that enter the cell
2. BThey bind specific signal molecules, such as hormones
3. CThey store the cell's genetic code for making proteins
4. DThey make ATP for the cell

Which codon signals the start of translation in most genes?

1. AAUG
2. BUAG
3. CUAA
4. DUGA

What is a chromosome?

1. AA strand of RNA that leaves the nucleus
2. BA long DNA molecule, packed with proteins, carrying many genes
3. CA small organelle in the cytoplasm that makes ATP for the cell
4. DA single gene that codes for one protein

พันธะชนิดใดเชื่อมกรดอะมิโนเข้าด้วยกันในโปรตีน

1. Aพันธะไกลโคซิดิก
2. Bพันธะไฮโดรเจนระหว่างเบส
3. Cพันธะเอสเทอร์
4. Dพันธะเพปไทด์

What is a bacterial endospore?

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

A cut in the skin heals as new skin cells fill the wound. Which process produces these cells?

1. ABinary fission
2. BMeiosis
3. CFertilisation
4. DMitosis

How does a phospholipid differ from a triglyceride?

1. AIt has four fatty acids instead of three
2. BIt contains no glycerol, only fatty acids and phosphate
3. COne of the fatty acids is replaced by a phosphate group
4. DIt is made of amino acids

Bacteria in a closed flask grow quickly at first, but the population then stops increasing. What is the main reason?

1. AThe flask becomes too cold for growth
2. BNutrients run out and waste products build up
3. CThe bacteria stop dividing once they reach adult size
4. DThe bacteria change into viruses after many divisions