ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the main material in the cell walls of fungi?

1. APeptidoglycan
2. BChitin
3. CCollagen
4. DCellulose

Which enzyme adds new nucleotides to build a new DNA strand?

1. APepsin
2. BHelicase
3. CDNA polymerase
4. DRNA polymerase

What is a eukaryote?

1. AAn organism whose cells have a nucleus
2. BAn organism that lives only in extreme heat
3. CAn organism made of a single cell without a nucleus
4. DA virus that infects animal cells

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

White blood cells called macrophages engulf and digest bacteria. Which organelle would you expect them to have in large numbers?

1. AChloroplasts
2. BLysosomes
3. CCentral vacuoles
4. DSmooth endoplasmic reticulum

لُقّح أبوان خليطا الأليلات (Aa × Aa) والأليل A سائد سيادة تامة. ما نسبة الأنماط الظاهرية المتوقعة؟

1. A3 سائد : 1 متنحٍّ
2. B1 سائد : 2 وسطي : 1 متنحٍّ
3. Cالكل سائد
4. D1 سائد : 1 متنحٍّ

How does a phospholipid differ from a triglyceride?

1. AIt has four fatty acids instead of three
2. BIt is made of amino acids
3. COne of the fatty acids is replaced by a phosphate group
4. DIt contains no glycerol, only fatty acids and phosphate

A farmer's crops grow poorly in soil lacking nitrates. Why do plants need nitrogen?

1. ATo absorb more carbon dioxide through the stomata
2. BTo make glucose during photosynthesis
3. CTo build cellulose cell walls
4. DTo make amino acids, proteins and nucleic acids