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Science > Cells > Flashcards

Cells Flashcards

1
Q

What is a cell

A

Basic unit of life

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2
Q

Characteristics of the cell membrane

A

Partially permeable, control movement of some substances entering or leaving the cell.

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3
Q

Characteristics of the cell wall

A

Made of cellulose, provides support for the plant, prevents plant cell from bursting and it is fully permeable.

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4
Q

Characteristics of the nucleus

A

Controls all cellular activities, contains DNA

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5
Q

Characteristics of the mitochondria

A

It has a double membrane, where the inner membrane is highly folded to increase the surface area, and it provides the cell with energy using sugar.

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6
Q

Characteristics of the cytoplasm

A

It is jelly-like, made up of water, salt, and proteins. It is the place where most cellular activities take place.

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7
Q

Characteristics of the chloroplast

A

Contains chlorophyll which traps light energy for photosynthesis.

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8
Q

Characteristics of the Large vacuole

A

It is permanent, contains cell sap and makes the plant turgid

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9
Q

Characteristics of the tiny vacuoles

A

Stores and transports substances

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10
Q

Characteristics of the red blood cell

A

It has no nucleus to store more haemoglobin. It has a biconcave shape to increase surface area to volume ratio for faster diffusion of oxygen. It has haemoglobin to bind to oxygen for transportation. And it is flexible to squeeze through narrow blood capillaries.

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11
Q

Characteristics of the ciliated cell

A

It is found in the respiratory tract. It has a cilia which sweeps the mucus and the goblet cell which produces mucus.

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12
Q

What is a cilia

A

A cilia is a hair-like extensions of the cell membrane and cytoplasm.

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13
Q

Characteristics of the root hair cell

A

It absorbs water and mineral salts from the roots, it has a long-thin projection which increases surface area to volume ratio for faster absorption.

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14
Q

Characteristics of the muscle cell

A

It is located in the skeletal, cardiac tissue and the digestive tract. It has many mitochondria to keep up with energy demand.

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15
Q

Characteristics of the sperm cell

A

It carries the father’s DNA, and has a flagellum to help it to swim to the egg. Its head contains enzymes to dissolve the egg membrane.

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16
Q

Characteristics of the egg cell

A

It carries the mother’s DNA. It contains yolk which serves as food store for the embryo after fertilisation.

17
Q

Characteristics of the palisade cell

A

It is located under the epidermis of the leaf, and it is the main site of photosynthesis. It is closely packed to capture as much light energy. It contains many chloroplast to absorb sunlight.

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