1 Cell Biology - Specialised Cells Flashcards Preview

AQA Biology Paper 1 11-1A > 1 Cell Biology - Specialised Cells > Flashcards

Flashcards in 1 Cell Biology - Specialised Cells Deck (13)
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1

Explain the use of a tail in sperm cells.

To swim and move around (to reach the egg)

2

Why do sperm cells have lots of mitochondria?

To provide lots of energy for swimming

3

Describe the adaptations of a nerve cell.

Lots of dendrites; Long axon

4

What is the function of a nerve cell?

Carry electrical impulses

5

How does having a long axon help neurones with their function?

Carry electrical impulses over long distances

6

Describe how a muscle cell is adapted for its function.

Special proteins for contraction; Many mitochondria for energy; Store glycogen to release glucose for respiration

7

Root hair cells have lots of mitochondria to release energy. What is the energy used for?

Active transport of mineral ions into root hair cells

8

How do the extensions in root hair cells help with their function?

Increase surface area for diffusion of water

9

What is another name for photosynthetic cells in plants?

Palisade mesophyll cells and spongey mesophyl

10

How are photosynthetic cells adapted for photosynthesis?

Lots of chloroplasts with chlorophyll to absorb light

11

Which specialised cell in plants make up the tissue for transporting water?

Xylem cells

12

Name the substance found in xylem cells that allows the cells to withstand high water pressure.

Lignin

13

State a difference in structure between xylem and phloem.

X: dead, hollow tube, has lignin; P: living, has sieve plates, no lignin