MCQs

Q421: Farming salt is _____?

• A) KClO₃
• B) NaCl
• C) HF

Q422: Chlorine upon reaction with NaOH in cold yields ______?

• A) NaCl, H₂O
• B) NaCl, NaClO, H₂O
• C) NaCl, NaClO₃, H₂O

Q423: Despite the structural diversities they are characterized by having soft body protected by calcareous shell developing from the mantle layer?

• A) Molluscs
• B) Corals
• C) Foraminiferous

Q424: Pond is an example for ecosystem?

• A) Incomplete
• B) Complete
• C) Almost complete

Q425: Sea horse is included in ______?

• A) Mollusca
• B) Pisces
• C) Mammals

Q426: Food is assimilated into the body from digestive tract in ______?

• A) Small intestine
• B) Esophagus
• C) Stomach

Q427: The individual chemical property of amino acid is determined by which of the following group?

• A) Alpha carbon
• B) Amino group
• C) Variable group

Q428: The biopolymer that make the fungal cell wall is?

• A) Peptidoglycan
• B) Chitin
• C) Liginin

Q429: The number of amino-acids found in most of the proteins?

• A) 170
• B) 25
• C) 20

Q430: The anticodon loop of the tRNA that complements mRNA is?

• A) T loop
• B) D loop
• C) Middle loop