IB Biology Cells

What is the specialized function of guard cells in plants?

• Controlling the opening and closing of stomata

• Producing energy through photosynthesis

• Secreting nectar to attract insects

• Aiding in seed dispersal

What is a specialized cell defined as in the video?

• A cell with a nucleus

• A cell with a structure suiting its function

• A cell with no organelles

• A cell that can divide quickly

What is the main function of epidermal cells in plant leaves?

• Photosynthesis

• Protecting the plant from water loss

• Pollination

• Producing seeds

Which statement best describes neurons as mentioned in the video?

• They aid in digestion

• They conduct nerve signals

• They store water

• They produce oxygen

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-8

What do trichomes in plants mainly help protect against?

• Excessive sunlight

• Water loss

• Pathogens

• Pollutants

Red blood cells are specialized for carrying which gas?

How does water play a crucial role in biological systems?

• Water is the main component of cells and is involved in various metabolic processes.

• Water is harmful to biological systems.

• Water is only important for hydration.

• Water has no role in biological systems.

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

How does hydrogen bonding contribute to the unique properties of water?

• Hydrogen bonding in water molecules leads to high cohesion, surface tension, and the ability to absorb heat.

• Hydrogen bonding in water molecules leads to low cohesion, low surface tension, and the ability to absorb heat.

• Hydrogen bonding in water molecules leads to low cohesion, low surface tension, and the inability to absorb heat.

• Hydrogen bonding in water molecules leads to low cohesion, surface tension, and the inability to absorb heat.

Tags

NGSS.MS-PS3-4

What is the significance of the high specific heat capacity of water in living organisms?

• Protection against extreme temperatures.

• Temperature regulation and stabilization of internal body temperature.

• Enhancement of metabolic reactions.

• Transportation of nutrients and waste products.

Tags

NGSS.HS-LS1-3

Describe the process of cohesion and adhesion in water.

• Cohesion is the attraction between water molecules, causing them to stick together. Adhesion is the attraction between water molecules and other substances, causing them to stick to surfaces.

• Cohesion is the attraction between water molecules, causing them to stick to surfaces. Adhesion is the attraction between water molecules and other substances, causing them to stick together.

• Cohesion is the attraction between water molecules, causing them to repel each other. Adhesion is the attraction between water molecules and other substances, causing them to repel from surfaces.

• Cohesion is the repulsion between water molecules, causing them to separate. Adhesion is the repulsion between water molecules and other substances, causing them to separate from surfaces.