Cell Organelles
This organelle controls the activities of the cell.
Nucleus
The basic unit of all living things.
Cell
Scientists group living things based on shared characteristics. This process is called _____.
Classification
What acronym did we use to remember the characteristics of living things?
MRSGREN
This scientific instrument allows us to see cells too small to see clearly with our eyes.
Microscope
This organelle releases energy from food for the cell.
Mitochondria
A group of similar cells working together.
Tissue
Scientists use these observable features to help classify organisms.
Structural features / characteristics
Name three characteristics of living things from MRS GREN.
Any 3: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition
This part of the microscope is where you place the slide.
Stage
This jelly-like substance is where many chemical reactions occur.
Cytoplasm
A group of different tissues working together.
Organ
What is a branching series of questions used to identify an organism called?
Dichotomous key / branching key
An organism made from only one cell is described as _____.
Unicellular / single-celled
Which type of microscope did we use to view cells on a glass slide?
Light microscope
This organelle contains chlorophyll and carries out photosynthesis.
Chloroplast
A group of organs working together to perform a major function.
Organ system
Why do scientists classify living things?
To organise, identify and compare organisms
An organism made from many cells is described as _____.
Multicellular
Name two structures found in plant cells but not animal cells.
Cell wall and chloroplasts
This large organelle stores water and dissolved substances in a plant cell.
Vacuole
Put these in order from smallest to largest:
organ, organism, cell, tissue, organ system.
Cell → tissue → organ → organ system → organism
Two organisms share many structural features. What might this suggest?
They are more closely related / belong to a similar group
Fire can move, grow and use oxygen. Why isn't it classified as a living organism?
It does not meet all the characteristics of life / isn't made of cells / does not reproduce biologically etc.
A cell has a cell wall, chloroplasts and a large vacuole. Is it a plant or animal cell? Explain.
Plant cell – those structures are characteristic of plant cells