ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What is endocytosis?

1. ASplitting the cytoplasm after the nucleus divides
2. BTaking material into the cell by folding the membrane around it
3. CMoving water across the membrane by osmosis
4. DReleasing material from the cell by fusing vesicles with the membrane

Which enzyme unwinds the DNA double helix and separates the two strands for copying?

1. ALipase
2. BHelicase
3. CAmylase
4. DLigase

ข้อใดเป็นจริงเกี่ยวกับแอลลีลเด่น

1. Aแสดงผลเฉพาะเมื่อมีสองชุด
2. Bไม่ปรากฏในฟีโนไทป์เลย
3. Cได้รับจากแม่เสมอ
4. Dแสดงผลได้เมื่อมีเพียงหนึ่งชุด

Human adult height varies across a smooth, continuous range rather than falling into a few separate groups. What is the best explanation?

1. AIt is an X-linked recessive trait
2. BIt is controlled by one gene with two alleles and full dominance
3. CIt is controlled by many genes and also affected by environment
4. DIt is controlled only by the environment

Why is water good at dissolving salts and sugars?

1. AIt has a very low boiling point
2. BIts molecules are polar
3. CIt contains carbon atoms
4. DIts molecules are nonpolar

What is an inversion mutation?

1. AA chromosome segment breaks off and is reattached the wrong way round
2. BA segment of a chromosome moves to a different, non-matching chromosome
3. CA segment of a chromosome is lost completely
4. DA whole extra chromosome is added to the cell

An Rh-negative mother gives birth to an Rh-positive baby. Why could a later Rh-positive pregnancy be at risk?

1. AThe second baby will be unable to make any red cells
2. BShe may have made anti-D antibodies that cross the placenta
3. CHer red cells may become Rh positive after the birth
4. DThe first baby's antibodies remain in her blood and attack her

A plant cell is placed in a strong salt solution. Its membrane and cytoplasm pull away from the cell wall. What is this called?

1. ACrenation
2. BPlasmolysis
3. CTurgor
4. DLysis