Y7 Cells and Classification

dichotomous key

a key for the identification of organisms based on a series of choices between alternative characteristics

species

A group of similar organisms that can breed and produce fertile offspring.

animal cell

A small living part of a multicellular organism

Animal cells have

Nucleus, cytoplasm, cell membrane, mitochondria, ribosomes

plant cell

A small living part of a multicellular organism that makes its own food in chloroplasts

Plant cells have

chloroplasts, cell wall, large central vacuole

chloroplast

organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy

Mitochondria

Powerhouse of the cell where energy is released

cell wall

A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.

Nucleus

A part of the cell containing DNA and RNA and responsible for growth and reproduction

Cytoplasm

A jellylike fluid inside the cell in which the organelles are suspended

cell membrane

A cell structure that controls which substances can enter or leave the cell.

Large Vacuole

Stores water, food, waste and more for a plant cell.

offspring

Product of reproduction, a new organism produced by one or more parents

microscope

device that produces magnified images of structures that are too small to see with the unaided eye

mammal

A warm-blooded vertebrate that feeds its young milk.

bird

An vertebrate that is covered in feathers, breathes through lungs and lays hard-shelled eggs.

amphibian

cold-blooded vertebrate typically living on land but breeding in water

fish

An vertebrate that lives in the water and has fins.

reptile

A vertebrate with scaly skin that lays eggs with tough, leathery shells.

invertebrate

An organism without a backbone

vertebrate

An animal with a backbone