characteristics of life

Question 1

what are all 6 characteristics of life

Answer 1

cellular organization
contain similar chemicals
use energy
grow and develope
respond to their environment
reproduce

Question 2

define unicellular organisms.

Answer 2

a single celled organisms

Question 3

define multicellular organisms

Answer 3

a multi celled oganism

Question 4

define a cell

Answer 4

the basic unit of life

Question 5

define growth

Answer 5

the process of becoming bigger

Question 6

define developement

Answer 6

the process of change that occurs during an organisms life to produce a more complex organism.

Question 7

what is the difference between growth and development?

Answer 7

one gets bigger and the other changes and produces.

Question 8

define stimulus.

Answer 8

a change in an organisms surrounding that caused the organism to react.

Question 9

define response.

Answer 9

an organisms reaction

Question 10

how are stimulus and response related?

Answer 10

they both end up reacting.

Question 11

what are the 4 needs of life?

Answer 11

water
living things
stanble internal living conditions
energy

Question 12

define cellular organization.

Answer 12

all organisms are made of cells

Question 13

define chemicals of life.

Answer 13

most abundant chemicle in cells is water.
carbohydrates are a cell’s energy source.
protien and lipids are building materials.
nuecleic acids are the genetic material.

Question 14

define energy use.

Answer 14

cells use energy to do what living things must do.

Question 15

define reproduction.

Answer 15

the ability to reproduce offsprings.

Question 16

what is the difference between autotroph and heterotroph.

Answer 16

autotroph makes its own food and heterotroph can’t

Question 17

who are the 4 important scientist who discovered something important about cells?

Answer 17

Robert Hooke.
Anton Van Leeuwenhoak.
Mattias schleden.
Theodor schwann.

Question 18

what did Robert discover that was important about cells?

Answer 18

used a microscope to observe cork cells

Question 19

what did Anton discover about cells that was so important?

Answer 19

during the late 1600 heobserved singl-celled organisms.

Question 20

what did Mattias discover about cells that was so important?

Answer 20

in 1838 he concluded that all plants were made of cells.

Question 21

what did Theodor discover about cells that was so important?

Answer 21

in 1839 he concluded that all living things are made of cells including animals.

Question 22

what are the 3 parts of the theory of cells?

Answer 22

1. Cells are the basic units of life.
2. all living things are made of cells.
3. all cells come from other cells

Question 23

what are the 3 different types of microscopes?

Answer 23

1. simple microscope.
2. compound microscope.
3. electronic microscope.

Question 24

define simple microscope.

Answer 24

single lens, only used to magnify.

Question 25

define compound microscope.

Answer 25

a light microscope that has more than 1 lens.

Question 26

define electronic microscope.

Answer 26

use a beam of electrons instead of light.

Question 27

how are plant and animal cells different from each other?

Answer 27

plant cells have chloroplast and cell walls and animal cells have lysosomes.

Question 28

what are the 11 major organells that we have studied?

Answer 28

1. Nucleus 2. Cell Membrane 3. Cytoplasm 4. Endoplasmic Reticulum 5. Ribosome 6. Golgi Bodies 7. Lysosomes 8. Vacuole 9. Chloroplast 10. Cell Wall 11. Mitocondria

Question 29

define nucleus.

Answer 29

ribosomes are made here

Question 30

define cell membrane.

Answer 30

controls what comes in and out of the cell.

Question 31

define cytoplasm.

Answer 31

contains organelles. the region between the cell membrane and the nucleus.

Question 32

define endoplasmic reticulum.

Answer 32

passage way that carries protein and other meterials from one part to another.

Question 33

define ribosomes.

Answer 33

attached to the endoplasmic reticulum. produce protein.

Question 34

define Golgi Bodies/apparatas.

Answer 34

recieves protein from the ER, then sends them to another part of the cell.

Question 35

define lysosomes.

Answer 35

breaks down food, collects and breaks down old and unused organelles, and helps fight off bacteria and virus.

Question 36

define vacuel.

Answer 36

stores water, food, and waste.

Question 37

define chloroplast.

Answer 37

gets energy from the sun light and produces food for the cell. only in plants.

Question 38

define mitocondria.

Answer 38

the power house of the cell because it produces most of the energy that the cell needs.

Question 39

define cell wall.

Answer 39

rigid outer layer that surrounds the cell, helps protect and support the cell. only in plant cells.