1- characteristics of living organisms

Question 1

movement

Answer 1

Action by organism or part of it that changes its position.

Question 2

respiration

Answer 2

Chemical reaction in cells that breaks down glucose to release energy for metabolism

Question 3

sensitivity

Answer 3

The ability to detect & respond to stimuli in internal or external environment.

Question 4

growth

Answer 4

Permanent increase in size & dry mass by an increase in cell number or cell size or both.

Question 5

reproduction

Answer 5

The process of making more of the same kind of the organism.

Question 6

excretion

Answer 6

Removal of waste products of metabolism, toxic materials & substances in excess from the organisms.

Question 7

nutrition

Answer 7

Taking in of materials for energy, growth & development.

Question 8

morphology

Answer 8

the overall form & shape of their bodies.

Question 9

anatomy

Answer 9

the detailed body structure.

Question 10

DNA

Answer 10

study of DNA, to compare the sequence of bases in DNA & of amino acids in proteins of organisms for accurate classification.

Question 11

species

Answer 11

group of organisms that can reproduce & produce a fertile offspring.

Question 12

binomial system

Answer 12

international system that gives scientific name to the organism that is made up of genus and species.
(The first word [genus] has a capital letter, while the
second word [species] has a small letter.)

Question 13

5 kingdoms of living organism

Answer 13

animals, plants, fungi, protoc

Question 14

animals

Answer 14

• Multicellular.
• Cells have nucleus.
• No cell wall or chloroplast.
• Feed on organic substances made by other living
  organisms [heterotrophic].

Question 15

plants

Answer 15

• Multicellular
• Cells have nucleus, cell wall & chloroplast
• Autotrophic nutrition [photosynthesis]
• May have roots, stems & leaves.

Question 16

fungi

Answer 16

• Unicellular and multicellular
  • Cells have nucleus & cell wall
  • Do not have chlorophyll
  • Feed by saprophytic or parasitic nutrition
  • Some can be eaten, as mushroom
  • Some can be used to make food as bread & medicine as antibiotics
  • Some can cause food decay or diseases

Question 17

protoctista

Answer 17

• `Unicellular or multicellular
  • Cells have nucleus, but may or may not
  have cell wall and chloroplast
  • Feed by photosynthesis and others feed on
  organic materials made by other organisms

Question 18

prokaryotes (bacteria)

Answer 18

• Unicellular
• Have no nucleus or mitochondria
• Have cell walls
• Some bacteria can photosynthesize
• Some are helpful, while some are harmful

Question 19

viruses

Answer 19

They are not considered to be alive, because they don’t have cell membrane, cell wall or nucleus.
• They don’t show the characteristics of living things, they only reproduce inside the host cell.

Question 20

structure of virus

Answer 20

1. protein coat
   • 2. genetic material [DNA or RNA or both]
   • All viruses are harmful
   • Once new viruses are made in the host cell, they will burst out of the cell to invade other cells.

Question 21

fish

Answer 21

vertebrates-
• scaly skin
• gills and fins
• Cold blooded

Question 22

amphibians

Answer 22

vertebrates-
• Have moist skin without scales
• Lay eggs in water
• Larva has gills & lives in water [tadpole]
• Adult has lungs and lives on land
• Cold blooded

Question 23

reptiles

Answer 23

vertebrates-
• Have dry scaly skin
• Lay eggs on land with rubbery shells
• Cold blooded

Question 24

birds

Answer 24

vertebrates-
• Have feathers, beak and wings
• Lay eggs with hard shells
• Endothermic [warm blooded]
• Heart has four chambers