Cells Test

Question 1

what are tissues?

Answer 1

Groups of same cells working together

Question 2

what are organs?

Answer 2

groups of different tissues working together for a function

Question 3

what are the levels of organisation in the human body?

Answer 3

cells - tissues - organs - organ systems - organisms

Question 4

What is a cell?

Answer 4

a cell is the smallest unit that is capable of performing life functions.

Question 5

What are the 7 life processes?

Answer 5

MRS NERG movement reproduction sensitivity nutrition excretion respiration growth

Question 6

what is cell theory?

Answer 6

all organisms are composed of one or more cellss

Question 7

what is cell division?

Answer 7

existing parent cell’s DNA replicates to create 2 daughter cells

Question 8

how do unicellular organisms reproduce

Answer 8

unicellular organisms reproduce through cell division

Question 9

how do multicellular organisms produce new cells?

Answer 9

Multicellular organisms produce new cells via cell division for growth and repair

Question 10

What groups are cells classified into?

Answer 10

prokaryotic and eukaryotic

Question 11

What are the qualities of prokaryotic cells?

Answer 11

most primitive, unicellular, simple structure, no nucleus or membrane bound organelles, DNA is found in cytoplasm

Question 12

What are the qualities of eukaryotic cells?

Answer 12

complex structure, has nucleus and organelles surrounded by membranes, found in most living things - single or multicellular, evolved from prokaryotic

Question 13

What do all cells have?

Answer 13

cell membrane, cytoplasm, DNA, ribosomes

Question 14

What is the cell membrane?

Answer 14

The outer covering that is a barrier protecting the cell. It controls movement of substances into and out of the cell

Question 15

What is the cytoplasm?

Answer 15

watery component where reactions happen, provides structure

Question 16

What is the DNA?

Answer 16

the genetic material of the cell

Question 17

what are ribosomes?

Answer 17

molecular machines that synthesize proteins

Question 18

Why are plant cells different to animal cells?

Answer 18

need to use photosynthesis to obtain energy and respiration to release the energy

Question 19

What do plant cells contain?

Answer 19

cell wall, cell membrane, central vacuole, chloroplasts, cytoplasm, nucleus

Question 20

what does cell wall do

Answer 20

provides plant with shape and support

Question 21

what does central vacuole do?

Answer 21

stores water, nutrients, and waste, fills with water to help stand upright

Question 22

what does chloroplasts do

Answer 22

absorb sunlight and stores the energy in sugar made from water and c02 (photosynthesis)

Question 23

What are the 4 types of tissue

Answer 23

nervous, epithelial, connective,muscle,

Question 24

what is mitochondria

Answer 24

powerhouse of the cell

Question 25

what is digestion?

Answer 25

digestion is the process of breaking down large insoluble molecules into smaller soluble ones.

Question 26

what does the digestive system do?

Answer 26

breaks down food, absorbs nutrients, and removes undigested material

Question 27

what does the liver do?

Answer 27

filters toxins, produces bile to break down fats

Question 28

what does the gallbladder do?

Answer 28

stores bile

Question 29

what does the pancreas do?

Answer 29

produces enzymes for digestion

Question 30

How do you find the magnification of a microscope?

Answer 30

magnification = eye piece x objective lens

Question 31

How do you view cells?

Answer 31

with a microscope because they are too small to see with the naked eye

Question 32

What is the path of food through the digestive system?

Answer 32

mouth - esophagus - stomach - small intestine (absorption of nutrients into circulatory system through villi) - large intestine (absorption of water) - rectum - anus

Question 33

Why do cells divide in the body?

Answer 33

to replace dead/damaged cells, new cells, for growth and repair

Question 34

types of cells and their function

Answer 34

animal - sperm (reproduction), egg (reproduction), red blood cell (carries oxygen), white blood cell (fights infection), skin cell (protects body), fat cell (insulation), plant - root hair cell (absorbs water), guard cell (transfer gasses with surroundings)

Question 35

what are the roles of bacteria in the small intestine?

Answer 35

assisting digestion of food, killing harmful bacteria