Question # 1

Root hairs absorb salts from soil by

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Diffusion

Filtration

Active transport

Osmosis

When you suck a cold drink using drinking straw, It resembles with.

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Diffusion

Flow of material in pholem

Flow of material in xylem

Root pressure

Which category of plants stores a small amount of water and has a thin cuticle.

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Mesophytes

Succulents

Xerophytes

Hydrophytes

The biochemical reactions in which larger molecules are broken down are called

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Metabolism

Catabolism

anabolism

Mutualism

What is the primary function of ribosomes?

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DNA Synthesis

Protein Synthesis

Lipid synthesi

Energy production

The smooth endoplasmic reticulun is primarily involved in the synthesis of.

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Proteins

Nucleic acids

Lipids

Carbohydrates

In the wall of stomach, which tissue also contains blood vessels and nerves.

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Phloem

Inner Connective

Epithelial

Muscle

Which of the followig are not changed during the biochemical reactions.

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Substrate

Enzymes

Products

ES complex

Which of the following stateemtn correctly represents ribosomes.

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They are present only in eukaryotic cell

They are produced in the nucleus then migrate to the cytoplasm where they synthesize proteins

They are coered by singel memberane

All ribosomes are attached to the inner suface of RER

What is TRUE . according to the induced fit model of enzyme action.

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Enzyme's active site change shape to bind the substrate.

Substrate must fit the enzyme perfectly before binding

No shape changes occur durring binding

Enzyme is inactivated during the process.

Which of the following cell structures is involved in maintaining cell shape.

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Cytoskeleton

Nucleus

Centrioles

Lysosome

What is the role of companion cells in the translocation process.

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They stor excess solutes in the phloem

they assist in the absorption of water by roots

They actively transport sugas into the phloem's sieve tube elements

The help regulate water potential in the xylem

At which stage of mitosis chromosomes line up in the centre.

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Prophase

Anaphase

Metaphase

Telophase

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