For every two K⁺ that are actively transported inwards, how many Na⁺ are pumped out of the cell...? Mcqs

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For every two K⁺ that are actively transported inwards, how many Na⁺ are pumped out of the cell...?

(A) 1
(B) 2

(C) 3
(D) 4

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The second most abundant metal found in the earth’s crust is_____________...?

(A) Silicon
(B) Aluminium

(C) Calcium
(D) Sodium

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Saccharine is made up of __________...?

(A) Toluene
(B) Phenol

(C) Propane
(D) None of these

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Root hairs are most important to a plant because they ______...?

(A) Store starch
(B) Contain xylem tissues

(C) Provide a habitat for nitrogen fixing bacteria
(D) Increase the surface area for absorption

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Which gas is transported out of the leaf into the air...?

(A) Carbon Dioxide (CO2)
(B) Nitrogen (N2)

(C) Water Vapor (H2O)
(D) Oxygen (O2)

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Which of the following does not pollute the air...?

(A) Nitrogen Dioxide
(B) Sulfur dioxide

(C) Carbon dioxide
(D) none of these

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The temperature at which two conjugate solutions change into one homogeneous solution is called__________...?

(A) Azeotrope
(B) Conjugate temperature

(C) Consolute temperature
(D) Eutectic point

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The substance that are added in the soil to make up any deficiency of nutrients are called...?

(A) Pesticides
(B) Herbicides

(C) Manure
(D) Fertilizers

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Study of current and past landscapes formation is known as____________...?

(A) Morphology
(B) Aero logy

(C) Geo-morphology
(D) Biology

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sea horse is a __...?

(A) Fish
(B) Horse

(C) Crocodile
(D) None of these

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