HQ1-1-2. 1- State two functions of the xylem tissue.

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Presentation transcript:

HQ1-1-2

1- State two functions of the xylem tissue

2- Identify the main component of the wall of a plant cell

3- Which word best describes a cell wall: Impermeable Semi-permeable Freely permeable Selectively permeable

4- Name two types of molecules present in the plasma membrane

5- Give the meaning of hydrophobic

6- State 2 functions carried out by the proteins of the cell membrane

7- red blood cell in very concentrated salt solution, solution is hypertonic or hypotonic?

8- What word is used to describe the effect of a hypertonic solution of sugar on red onion cells?

9- What is characteristic of active transport? (2 answers)

Answers 1- transport of water/ minerals + Structural support to the plant 2- Cellulose 3- Freely permeable 4- lipids and proteins 5- repelled by water/ water hating hypertonic 8-Plasmolysed 9- requires energy + against the concentration gradient.