ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

โปรตีนถูกประกอบขึ้นจากกรดอะมิโนที่โครงสร้างใด

1. Aไรโบโซม
2. Bเซนทริโอล
3. Cแวคิวโอล
4. Dไลโซโซม

Which codon signals the start of translation in most genes?

1. AUGA
2. BUAG
3. CAUG
4. DUAA

How many strands does an RNA molecule usually have?

1. AOne
2. BThree
3. CFour
4. DTwo

Where does the oxygen released by photosynthesis come from?

1. AFrom glucose that is broken down
2. BFrom water molecules that are split
3. CFrom carbon dioxide molecules that are split
4. DFrom chlorophyll that is used up

The sodium-potassium pump moves ions across the cell membrane. What does one cycle of the pump do?

1. AMoves 3 K⁺ out and 2 Na⁺ in, using ATP
2. BMoves 3 Na⁺ out and 2 K⁺ in, using ATP
3. CMoves Na⁺ in and K⁺ out, without using ATP
4. DMoves 2 Na⁺ out and 3 K⁺ in, using ATP

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

Sweating cools the body. Which property of water best explains this?

1. AIt is less dense as ice than as a liquid
2. BIt has a very low specific heat
3. CIt is a nonpolar solvent
4. DIt takes a lot of heat energy to evaporate

Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?

1. A46, one for each chromosome
2. B2²³, about 8 million
3. C23², about 529
4. D2 × 23, which is 46