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Biology > Living Organisms > Flashcards

Living Organisms Flashcards

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1
Q

How can microscope see cells?

A

Has a light behind the stage and has a high magnification.

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2
Q

If the eyepiece was x 10 and the object lens was x40

A

Total magnification = 10 x 40 = x400 (400 times)

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3
Q

What does a cell membrane do?

A

Controls the movement of the substances into and out of the cell.
Found in plant and animal cell.

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4
Q

What does Cytoplasm do?

A

Jelly like substance, where chemical reactions happen

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5
Q

What does a nucleus do?

A

Carries genetic information and controls whathappens inside the cell

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6
Q

What does the mitochondria do?

A

Where the most respiration happen

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7
Q

What does a vacuole do?

A

Contains the cell sap which keeps the cell firm

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8
Q

What does the cell wall do?

A

Made of a tough substance called cellulose, which supports the cell.

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9
Q

What does red blood cell do?

A

Carries oxygen, contains haemoglobin

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10
Q

What does a nerve cell do?

A

Ito carry the nerve impulse to different part of the body

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11
Q

What does the female reproduction cell do?

A

Joins with male cell and then provides food and water for the new cell that has been formed

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12
Q

What does a male reproduction cell do?

A

To reach the female cell and join it

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13
Q

What does a root hair cell do?

A

To absorb water a minerals

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14
Q

What does a leaf cell do?

A

To absorb sunlight for photosynthesis

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15
Q

What is tissue?

A

Animal and plant cells can for tissue, like mussel tissue.
A living tissue is made from a group of cells with similar structure.
Eg: muscles, lining of intestine and lungs.

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16
Q

What is an organ?

A

An organ is made on different tissues that has joined together to do a particular job.
Eg: heart, lung, stomach, brain, leaf and root.

17
Q

What is an organ system?

A

An organ system is mad up of different organs, which all work to get her to do one particular job.
Eg: circulatory system, reproductive system and digestive system.

18
Q

How many bones is a Skelton made up of?

A

Ove 200 bones

19
Q

What is the function of a Skelton?

A

To support the body
To protect the vital organs
To help the body move
To make blood cells

20
Q

Name the bones from top to bottom

A

Skull, collarbone, breast bone, humerus, rib cage, spine, radius, ulna, femur, knee cap, Tina and fibula.

21
Q

What does the Skelton protect?

A

The skull protects the brain
The rib age protects the heart and the lungs
The backbone protects the spinal cord.

22
Q

What does white blood cells do?

A

Destroys harmful microorganism in your body.

23
Q

What are joints and what do they do?

A

Joint are bones linked together, allows different body parts of the Skelton move.

24
Q

What are synovial joints

A

Joint that have a tough, smooth substance called cartilage to stop the joint from wearing away this is kept slippery by a liquid Calle synovial fluid , tough ligaments join the bone to stop it from falling apart.

25
Q

What is a hinge joint?

A

Like opening and closing a door, with no rotation

EG: knee and elbow

26
Q

What is a ball and socket joint?

A

Moves back and forth in all directions, and rotation.

EG: hip and shoulder

27
Q

What is muscle contraction?

A

Where the muscle it attached to bone by strong tendon, when contract is pulls muscle on the bone and the bone can move if it is part on a joint.

28
Q

What is an antagonistic muscles?

A

Help the muscle move back into place.

29
Q

What happens when the biceps muscle is contracted?

A

The triceps muscle relaxes

30
Q

What happens when the triceps are contracted?

A

The biceps relaxes

31
Q

What does MRS GREN stand for?

A 
M-movement 
R-respiration breathing
S-sensitivity knows its surrounding 
G-grow 
R-reproduction making babies
E-excretion getting rid of waste
N-nutrition taking and using food.

Biology (5 decks)

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