1. 2. 3. Prokaryotic ribosomes have subunit A) 60S B) 80S C) 50S D) 40S In eukar

Question

1. 2. 3. Prokaryotic ribosomes have subunit A) 60S B) 80S C) 50S D) 40S In eukaryotes lipids are synthesized by A) SER B) RER C) Golgi apparatus D) nucleolus The hydrophobic barrier in cell membrane is made of A) phospholipid tails B) phospholipid heads C) integral proteins D) peripheral proteins 4. Adenosine is formed of A) adenine, phosphate B) adenine, ribose C) adenine, deoxyribose D) adenine, ribose, phosphate A dimer formed from 2 glucose molecules A) maltose B) lactose C) sucrose D) all of these

Explanation / Answer

Ans1. (c)50S

Prokaryotic ribosomes are made up of two subunits 50S and 30S

Ans2. (a)SER

Smooth endoplasmic reticulum synthesizes and manufactures lipids.

Ans3. (a)Phospholipid tails

In a cell membrane phospholipid head is hydrophilic and phospholipid tail is hydrophobic.

Ans4. (b)Adenine, ribose

Adenosine is composed of Adenine and a ribose sugar molecule.

Ans5. (a)Maltose

Glucose + Glucose forms Maltose.

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