ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What does transfer RNA (tRNA) do?

1. AIt copies DNA in the nucleus
2. BIt brings amino acids to the ribosome
3. CIt carries the code out of the nucleus
4. DIt joins two DNA strands together

What is the resolution of a microscope?

1. AHow many times larger it makes the image of the specimen
2. BIts ability to show two close points as separate
3. CHow bright the image appears
4. DHow large the field of view is

What is the correct order of the phases of mitosis?

1. AProphase, anaphase, metaphase, telophase
2. BTelophase, anaphase, metaphase, prophase
3. CProphase, metaphase, anaphase, telophase
4. DMetaphase, prophase, anaphase, telophase

What is a chromosomal translocation?

1. AA piece of a chromosome is copied twice and stays in the same place
2. BA piece of a chromosome is flipped around in place
3. COne DNA base is replaced by another base
4. DA piece of one chromosome attaches to a non-matching chromosome

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy conjugation, transferring plasmids through a pilus
2. BBy osmosis, moving genes in water
3. CBy mitosis, sharing copies of their chromosomes with neighbours
4. DBy meiosis, forming gametes with new alleles

ماذا يحدث أثناء النسخ (الاستنساخ)؟

1. Aيُنسخ جزيء DNA كله قبل الانقسام
2. Bتُصنع نسخة mRNA من جين انطلاقًا من DNA
3. Cيُبنى بروتين من رسالة mRNA
4. Dتُربط الأحماض الأمينية عند الريبوسوم

Why can O-negative red blood cells be given to patients of almost any blood type in an emergency?

1. AThey carry no A, B or RhD antigens
2. BThey carry all of the A, B and RhD antigens
3. CTheir plasma contains anti-A and anti-B antibodies
4. DThey have no haemoglobin to react with

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

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