Protista

Question 1

Asexual reproduction

Answer 1

reproduction involving one parent

Question 2

Diffusion

Answer 2

movement of molecules from an area of high concentration to an area of low concentration

Question 3

Enzyme

Answer 3

a biological catalysts composed of protein

Question 4

Eukaryote

Answer 4

an orgamism that has a nucleus and membrane enclosed organelles

Question 5

excretion

Answer 5

removal of waste products of metabolism from living organism

Question 6

hetertroph

Answer 6

a living organism that does not have the ability to make its own food

Question 7

Homeostatsis

Answer 7

regulagion/ maintenance of a constant internal enviorment of a living organism

Question 8

Metabolism

Answer 8

sum of all chemical reactions in a living organism

Question 9

osmoregulation

Answer 9

the maintance of an appropriate and constant water balance in a living organism

Question 10

Osmosis

Answer 10

movement of wter molecules from an area of high water concentration to an area of low water concentration across a selectivily permable membrane

Question 11

How does the ameoba feed

Answer 11

hetertrophic omnivores

Question 12

Whats the purpose of pseudopodia

Answer 12

false feet- required for movement and aids in digestion

Question 13

Whats the purpose of a contractile vacuole

Answer 13

expels excess water that cannot be stores in the water vaole- conftrubing to osmoregulation

Question 14

Decribe osmoregulation in an amoba

Answer 14

Water enters due to osmosis.
contractile vacuole collects excess water.
contrctile vacuole swells
contracile vacole movess to the edge of the cell.
contractile vacuole bursts and expels water
cycle is repeated

Question 15

Describe the feeding mechanism of the amoba

Answer 15

pseudopods from around food, trapping it. amoba secret emxymes to digest food. the digested food moves into vacuoles by diffusion

Question 16

Why is water so important

Answer 16

water is required in living organism for transport medium, for chemical reactions, is an excellent solvent , used for temperature regulation

Question 17

In marine water vs fresh water, which requires the conractile vauole to be more active

Answer 17

freshwater. Water moves from an area of high water concentration to area of low water concentration across a semipermeable membrane. contractile vacuole will be more active in freshwter than marine water amobea