Science (bio)

Question 1

What is a cell

Answer 1

The building blocks of all organisms.

Question 2

What is a stereo microscope

Answer 2

Hase 2 ocular lenses and uses light reflected from the surface

Question 3

What is a light microscope

Answer 3

uses light from a mirror or lamp to pass through the specimen. Specimen must be thin.

Question 4

Electron microscopes

Answer 4

Use beams of tiny particles instead of light and are able to magnify up to a million times

Question 5

Whats a micrometer

Answer 5

A one-thousandth or one-millionth of a millimeter

Question 6

What is feild of veiw

Answer 6

The maximum area visible when looking through a microscope

Question 7

Who created the first microscope

Answer 7

Zacharias Janssen

Question 8

What is the cell theory

Answer 8

The discovery that plant cells are not just empty boxes and have even smaller structures inside.

Question 9

What are eukaryotik cells

Answer 9

Cells containing membrane-bound organelles and are the basis for both unicellular and multicellular organisms.

Question 10

What are prokaryotic cells

Answer 10

Do not have any membrane-bound organelles and are only part of unicellular organisms

Question 11

Difference between plant and animal and cells

Answer 11

Plant celss have a cell wall and cell membrane, whereas animal cells have only cell membrane.

Question 12

Whats an organelle

Answer 12

A subcellular stucture that only has one or more specific job

Question 13

What are fungal cells

Answer 13

Organisms that can be made of just a single cell or many cells.They form into things such as yeast and mushrooms.

Question 14

Difference between multi and uni cellular organisms

Answer 14

Multicellular means it has more than one cell in the organism, while unicellular is when there is inly one cell forming the organism.

Question 15

What is mitosis

Answer 15

The division of a cell into 2 identical cells.

Question 16

red blood cells

Answer 16

They transfer oxygen from your lungs, around your body and to the cells. Found in blood vessels

Question 17

white blood cells

Answer 17

Part of the immune system and help fight off infections. Found in lymph nodes and blood vessels.

Question 18

Brown fat cells

Answer 18

Produce heat for the body.

Question 19

White fat cells

Answer 19

Found underneath the skin and store energya and help keep your body at a constant temperature

Question 20

Gaurd cells

Answer 20

Found on the leaves and stems of plants. Open and close tiny pores that allow gasses needed to enter and unneeded gasses to leave

Question 21

Photosynthetic cells

Answer 21

Found near the surface of the green parts of stems. Uses chlorophyll to trap the suns energy which is then used for photosynthesis

Question 22

Conducting cells

Answer 22

Long thin tubes that transport food and water from the leaves to the roots and stems. Found in the roots and stems of plants.

Question 23

Structural cells

Answer 23

acts as the skeleton of the palnt and the cell wall is thick ant strong to provide support. Found in the cell wall

Question 24

Root hairs

Answer 24

Root hairs increase the surface area of the root for water intake. Found in the roots of plants.

Question 25

How are tissues made

Answer 25

Similar speacilised cells work together to complete a specific task

Question 26

How are organs formed

Answer 26

Tissues are organised into organs which containsatleast 2 different types of tissue working together to complete a specific task.

Question 27

How are organ systems formed

Answer 27

When organs arrange into organs sytems. 2 or more different organs work together.

Question 28

Epithelial tissue

Answer 28

Made up of cells that form surfaces over other organs. E.g; skin

Question 29

Connective tissue

Answer 29

Supports and hold together other tissues in the body. E.g; fat, bone

Question 30

Muscle tissue

Answer 30

A speacialised tissue that can contract, becoming shorter and fatter. E.g; upper arm/biceps

Question 31

Nerve tissue

Answer 31

electrical signals are sent around the body which are controlled by nerve tissue.

Question 32

What does the heart do?

Answer 32

The tissues work together to pump blood. The blood carries nutrients and oxygen to the cells

Question 33

What do the liver and pancreas do?

Answer 33

Produce chemicals that help with digestion.

Question 34

volentary muscles (skeletal muscles)

Answer 34

attached to the bones of your skeleton and are used for support

Question 35

involuntary muscles (smooth muscles)

Answer 35

controls breathing and keeping food moving through your gut

Question 36

cardiac muscles

Answer 36

uses mitochondria to provide a continuous supply of energy that allows the heart to beat.

Question 37

respiratory system

Answer 37

gets oxygen from the air and into your body and gets ride of waste and carbon dioxide

Question 38

skeletal system

Answer 38

your skeleton and muscles

Question 39

excretory system

Answer 39

gets rid of waste from the body

Question 40

Nervous system

Answer 40

Sends messages to and from your brain

Question 41

Reproductive system

Answer 41

Creates and transports the speacialised cells necessary for reproduction.

Question 42

What do the stomach and small intestine do?

Answer 42

Food goes through chemical changes so it can be used by the body

Question 43

Rectum

Answer 43

Waste is stored until it us passed out if the body

Question 44

Large intestine does:

Answer 44

Water is removed from the waste

Question 45

Xylem

Answer 45

Carries water from the roots and are long thin tubes with strong walls

Question 46

Pholeum

Answer 46

Carries glucose from the leaves to all the other plant parts

Question 47

Whats an example of a plant tissue

Answer 47

Vascular tissue: allows materials to be transported around plants and contains 2 types of cells

Question 48

Plant organs include ________

Answer 48

Roots, stems, leaves.