NATURE AND VARIETY OF LIVING ORGANISMS

What does MRS GRENC show

The analogy ‘MRS GRENC’ represents the 8 things that living organisms have or do.

What is the M in MRS GRENC?

Movement- ability to change position

What is the R in MRS GRENC?

Respiration- chemical reaction that break down glucose to release ATP

What is the S in MRS GRENC?

Sensitivity- living organisms respond to stimuli

what is the G in MRS GRENC

Growth- living organisms increases its size and mass

What is the second R in MRS GRENC

Reproduction- produce offspring

What is the E in MRS GRENC

Excretion- removing waste products

what is the N in MRS GRENC 

Nutrition- living organisms obtain nutrients for energy and growth. 

what is the C in MRS GRENCH 

Control- regulating and keeping things balanced

what are the 4 eukaryotic organisms

animals

plants

fungi

protocists

structure of plants (+ example) 

multicellular organisms 

contains chloroplast (photosynthesis) ]

cell wall (made up of cellulose) 

store carbohydrates as sucrose 

EXAMPLE- peas 

structure of animals (+Example)

Multicellular organisms

no chloroplast (no photosynthesis)

no cell wall

have nervous co ordination (can move)

store carbohydrates as glycogen

EXAMPLE- humans (mammals) 

Fungi characteristics (+example)

unicellular + multicelluar organisms

cell wall (chitin)

use apostrophic nutrition to feed

Body made out of mycelium but mycelium made out of hyphae. 

EXAMPLE-

unicellular (yeast)

protoctists + examples.

unicellular

some act like animals (amoeba)

some act like plants (chlorella)

some are pathogens (plasmodium)

prokaryotic features

no nucleus

smaller

eukaryotic features 

nucleus 

larger 

define pathogen

something that can causes a disease.

structures + example of virus

genome

capsid

protein coat

envelope protein

EXAMPLE- covid 19