ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What does sterilisation mean?

1. AKilling or removing all microorganisms, including spores
2. BReducing the number of microbes on the skin before an injection
3. CWashing away visible dirt with water
4. DKilling only the viruses on a surface

What is a pathogen?

1. AA microorganism or agent that causes disease
2. BA medicine that kills bacteria
3. CA harmless microbe living on the skin
4. DA cell of the immune system that fights infection

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

Why do the palisade cells near the top surface of a leaf contain many chloroplasts?

1. AThey protect the leaf from insects and strong winds
2. BThey store most of the plant's water for dry periods
3. CThey get the most light and do most of the photosynthesis
4. DThey carry sugars from the leaves down to the roots

How are photosynthesis and aerobic respiration related?

1. ABoth take place only in chloroplasts
2. BThe products of one are the reactants of the other
3. CBoth release oxygen into the air
4. DBoth happen only in animal cells, never in plant cells

A thermometer gives readings of 36,1, 36,1 and 36,2 °C for a water bath that is really at 37,0 °C. How are these readings best described?

1. ABoth accurate and precise
2. BNeither accurate nor precise
3. CPrecise but not accurate
4. DAccurate but not precise

طول بروتين 150 حمضًا أمينيًا. دون احتساب كودون التوقف، كم قاعدة في mRNA تشفّر له؟

1. A450
2. B50
3. C300
4. D150

After wolves are removed from a park, the deer population rises sharply and young trees are overgrazed. What does this show?

1. ARemoving a predator has no effect on plants
2. BDeer are producers in the food web
3. COrganisms in a food web depend on each other
4. DWolves compete with trees for sunlight