IB Biology Cell Specialization

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

Tags

NGSS.MS-LS1-6

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

What organelle is abundant in muscle cells due to their need for energy?

• Lysosome

• Golgi apparatus

• Mitochondria

• Endoplasmic reticulum

Tags

NGSS.MS-LS1-7

These diagrams show a variety of cells from the same organism. How can cells from the same organism have such different shapes and functions?

• As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity.

• Mutations in the cells' nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.

• During differentiation, different parts of the DNA in each type of cell are activated, resulting in the different structure and function of the cells.

• During differentiation, different types of cells produce proteins which destroy the nonactive DNA, leading to cell specialization.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which statement best describes neurons as mentioned in the video?

• They aid in digestion

• They conduct nerve signals

• They store water

• They produce oxygen

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NGSS.MS-LS1-3

Red blood cells are specialized for carrying which gas?

What is the movement of particles with the concentration gradient using protein "helpers"?

• diffusion

• facilitated diffusion

• active transport

• enzymatic reactions

What is the structure inside of a cell that has a specific purpose?

• Organelle

• Layer

• Prokaryote

Tags

NGSS.MS-LS1-2

What is the phospholipid bilayer composed of?

• hydrophobic heads

• hydrophilic heads

• Hydrophobic Tails

• Hydrophilic Tails

Tags

NGSS.MS-LS1-2