L2 Specialised Cells

Learning objective: How cells adapted to carry out certain roles.

Key Words:

Organelles, Chloroplast, Vacuole, Mitochondrion, Nucleus, Cell Wall, Cell Membrane.

Retrieval Task

Saturday, 25 January
2025

Plant and animal cells are classed as?

Eukaryotic cells.

What are organelles?

Small structures within a cell that have specific job.

Name two things plant cells have that animal cells don’t.

Cell wall, Chloroplasts, Vacuole.

Specialised Cells.

Multiple Choice

Plant and animal cells are classed as?

• Eukaryotic cells
• Multicellular organisms
• Unicellular organisms
• Prokaryotic cells

Multiple Choice

Name two things plant cells have that animal cells don't.

• Lysosomes
• Mitochondria
• Nucleus
• Cell wall, chloroplasts

Learning objective: How cells adapted to carry out certain roles.

Key Words:

Organelles, Chloroplast, Vacuole, Mitochondrion, Nucleus, Cell Wall, Cell Membrane.

Learning objective: Differentiation to fill
specialised roles.

Previous learning: Cells
and organelles.

Moving forward: Drawing diagrams of
specialised cells.

Learning objective: How cells adapted to carry out certain roles.

Key Words:

Organelles, Chloroplast, Vacuole, Mitochondrion, Nucleus, Cell Wall, Cell Membrane.

Starter

Many organisms, including humans, start life as a single celled
organism. A fertilised egg which divides to form an embryo.

Red blood cells: small cells packed with haemoglobin which
carries oxygen. No nucleus or mitochondria.

White blood cells: Fight infections. All have a nucleus, cell
membrane, cytoplasm and mitochondria.

Sensory Neurone: Long fibres carry signals from receptors to brain
and spinal cord.

Motor neurone: Long fibres carrying signals from brain or spinal cord
to muscles. Power movement.

Learning objective: How cells adapted to carry out certain roles.

Key Words:

Organelles, Chloroplast, Vacuole, Mitochondrion, Nucleus, Cell Wall, Cell Membrane.

Guided Practice

This Photo by Unknown Author is licensed under CC BY-SA-NC

Multiple Choice

What is the job of the sensory neuron?

• To process motor commands from the brain.
• To store memories and experiences.
• To regulate body temperature.
• The job of the sensory neuron is to transmit sensory information to the central nervous system.

Multiple Choice

What is the role of a motor neuron?

• To transmit signals from muscles to the central nervous system.
• To process sensory information from the environment.
• To regulate blood flow in the circulatory system.
• Send signals to the muscles, allowing us to move.

​Plant Cells

Xylem: To carry water. No cytoplasm or organelles.

​

Phloem: Carries dissolved sugars from leaves to rest of plant.

Guard cells: in epidermis of leaf to allow CO2 to enter for
photosynthesis.

Learning objective: How cells adapted to carry out certain roles.

Key Words:

Organelles, Chloroplast, Vacuole, Mitochondrion, Nucleus, Cell Wall, Cell Membrane.

Guided Practice

This Photo by Unknown Author is licensed under CC BY

Multiple Choice

In which part of the plant does photosynthesis occur?

• Stems
• Roots
• Leaves
• Flowers

​Tissues.

​

A group of similar, specialised cells that work together to carry
out a particular function in the body.
Epithelial tissue: Skin, linings of heart, blood vessels etc. Skin has
tiny hairs called cilia.
Connective tissue: Bone and blood. Blood is for transport and
defence.
Muscle: Contracts to create movement of limbs, gut, heart etc.

Fill in the Blanks

Muscle cells

to move limbs

Learning objective: How cells adapted to carry out certain roles.

Key Words:

Organelles, Chloroplast, Vacuole, Mitochondrion, Nucleus, Cell Wall, Cell Membrane.

Independent Practice

This Photo by Unknown Author is licensed under CC BY-SA-NC

Multiple Choice

What role do Mitochondria carry out?

• Aerobic respiration, produce energy.

• Anaerobic respiration, cause cramp.

• Let you smell things.

• Just look pretty

Drag and Drop

Match the following descriptions to the blanks ie animal cell has a NUCLEUS

Plant cell -

Placeholder

Animal cell -

Placeholder

Chloroplast -

Placeholder

Mitochondria -

Placeholder

Cell membrane -

Placeholder

Drag these tiles and drop them in the correct blank above

Plant cell

Animal cell

Chloroplast

Mitochondria

Cell membrane

Cell wall

Nucleus

Photosynthesis

Energy production

Protective barrier