ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

ماذا يفعل الجسيم الحال (الليسوسوم)؟

1. Aيهضم الفضلات والأجزاء البالية
2. Bيخزّن المعلومات الوراثية للخلية
3. Cيلتقط طاقة الضوء للخلية
4. Dيصنع البروتينات من الأحماض الأمينية

What is the main role of the cytoskeleton?

1. AIt joins amino acids into proteins
2. BIt controls which substances enter the cell
3. CIt gives the cell its shape and helps it move
4. DIt stores the genetic code of the cell

Which organelle breaks down fatty acids and hydrogen peroxide?

1. ARibosome
2. BCentriole
3. CChloroplast
4. DPeroxisome

A protein is made to be secreted out of the cell. What path does it follow?

1. ARough ER, then Golgi apparatus, then vesicle, then cell membrane
2. BGolgi apparatus, then rough ER, then nucleus, then cell membrane
3. CNucleus, then lysosome, then Golgi apparatus, then cell membrane
4. DSmooth ER, then mitochondrion, then vesicle, then cell membrane

In disease spread, what is a vector?

1. AAn organism that carries a pathogen between hosts
2. BA blood test used to detect antibodies
3. CThe first person to catch a disease
4. DA medicine that destroys a pathogen in the body

Dolly the sheep was cloned by putting the nucleus of an adult body cell into an egg cell whose nucleus had been removed. Whose nuclear DNA did Dolly have?

1. AThe sheep that carried the pregnancy
2. BThe sheep that gave the body cell nucleus
3. CThe sheep that gave the egg cell
4. DAn equal mix of all three sheep

A scientist wants to show that a particular microbe causes a disease. According to Koch's postulates, which step is needed?

1. AThe microbe grown from a sick host must cause the disease in a healthy host
2. BThe microbe must be found in healthy hosts just as often as in sick hosts
3. CThe microbe must be seen in the blood under a light microscope
4. DThe disease must be treated successfully with antibiotics

يبيّن رسم بياني أن نشاط إنزيم يرتفع من 20 °C إلى ذروة عند 37 °C ثم ينخفض بحدة. ما أفضل تفسير؟

1. Aيواصل الإنزيم التسارع كلما ارتفعت الحرارة
2. Bلا أثر لدرجة الحرارة في نشاط الإنزيم
3. Cالمثلى نحو 37 °C؛ والحرارة الأعلى تمسخه
4. Dيعمل الإنزيم أفضل ما يكون عند 20 °C ويتلف عند 37 °C