Cell Transport Processes

This section covers questions related to various cell transport processes, which are essential topics in GCSE biology exam questions by topic.

The questions test understanding of:

1. Diffusion: Students are asked to identify a diagram showing oxygen moving by diffusion.

2. Osmosis: The question mentions that plant cells use osmosis to absorb water.

3. Active Transport: Students are asked to complete sentences about active transport in plant cells.

Key points include:

• Plant cells use osmosis to absorb water from the soil.
• Plant cells use active transport to absorb mineral ions from the soil.
• Active transport moves substances against the concentration gradient and requires energy.

Definition: Osmosis - The movement of water molecules from an area of high concentration to an area of low concentration through a partially permeable membrane.

Definition: Active Transport - The movement of particles from a low concentration to a high concentration using energy from respiration.

This section helps students prepare for Order of magnitude questions Biology by understanding the scale and mechanisms of cellular transport processes.

Specialized Cells

This section focuses on specialized cells and their adaptations, which is a key topic in AQA A Level biology Cell structure exam questions.

The question presents a diagram of a root hair cell and asks students to:

1. Identify the type of specialized cell (root hair cell).
2. Describe how the cell is adapted to increase absorption of substances from the soil.

The correct answer notes that the root hair cell has a large surface area, which is an adaptation that increases its ability to absorb substances from the soil.

The question also mentions sperm cells as another type of specialized cell, though it doesn't go into detail about their structure or function in this section.

Vocabulary: Root Hair Cell - A specialized plant cell that extends from the root to increase the surface area for water and mineral absorption from the soil.

Highlight: Understanding how cell structures are adapted for specific functions is crucial for answering questions about specialized cells in GCSE Cell biology exam questions and answers pdf AQA.

This section helps students prepare for questions that ask them to recall the structures found in animal and plant (eukaryotic) cells inc algal cells and explain how these structures relate to cell function.