ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

ما الانتشار؟

1. Aابتلاع الخلية جسيمات كبيرة داخل حويصلة
2. Bحركة الجسيمات من تركيز أدنى إلى تركيز أعلى
3. Cحركة الجسيمات من تركيز أعلى إلى تركيز أدنى
4. Dحركة الماء عبر غشاء باستخدام ATP

في المنهج العلمي، ما الفرضية؟

1. Aقائمة بالقياسات المأخوذة
2. Bتفسير أو توقّع قابل للاختبار
3. Cتفسير واسع تدعمه تجارب كثيرة
4. Dاستنتاج ثبتت صحته

What is a chromosome?

1. AA strand of RNA that leaves the nucleus
2. BA small organelle in the cytoplasm that makes ATP for the cell
3. CA long DNA molecule, packed with proteins, carrying many genes
4. DA single gene that codes for one protein

What is the job of the checkpoints in the cell cycle?

1. ATo speed up division whenever the cell is short of nutrients or space
2. BTo copy the DNA a second time before mitosis
3. CTo stop the cycle if the DNA is damaged or the cell is not ready
4. DTo join the two daughter cells back together

What is the function of the pores in the nuclear envelope?

1. AThey make ribosomal RNA for the cell
2. BThey attach the nucleus to the cell membrane
3. CThey let molecules such as mRNA pass in and out
4. DThey let chromosomes leave the nucleus to be copied

How does cytokinesis differ between animal cells and plant cells?

1. AAnimal cells pinch in with a furrow; plant cells build a cell plate
2. BAnimal cells build a cell plate; plant cells pinch in with a furrow
3. COnly animal cells carry out cytokinesis
4. DOnly plant cells carry out cytokinesis

Bacteria grown in heavy nitrogen (¹⁵N) are moved to normal nitrogen (¹⁴N) and allowed to divide once. All their DNA now has a density halfway between heavy and light. Which model of replication does this support?

1. AConservative replication
2. BSemiconservative replication
3. CReplication by RNA copying
4. DReplication without a template

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. BShe may have made anti-D antibodies that cross the placenta
3. CThe second baby will be unable to make any red cells
4. DThe first baby's antibodies remain in her blood and attack her