Biology For General Secondary Certificate - Two Terms - Chapter One : Nutrition I. Complete the following sentences with suitable words: 1- In photosynthesis .............. is the limiting factor of the Dark reactions.
- Temperature
2- Salivary amylase catalyzes the hydrolysis of ................ into............ in ................. Medium
- Starch - dissacharide maltose - Alkaline
3- Cellulose walls are ................. but plasma membranes are ................
- Permeable - Semi-permeable.
4- A part of the energy stored in the excited chlorophyll is used in ............. and another part is stored in the form of ................…
- Splitting water molecules - ATP
5- The mesophyll in plant leaves is composed of ................. and ..................... tissues.
- Palisade - spongy tissue.
6-
- (1) Maltase (2) (3) glucose
14-
- (1) Sucrase (2) (3) Fructose
15-
- (1) Lactase (2) (3) glucose
16-
- Amino acids
17-
- Enterokinase
18-
II. Write the scientific term that is expressed by each of the following sentences:- 1- A series of rhythmic contractions and relaxations of circular muscles which extend along the alimentary canal
- Peristalsis
2- A process through which the digested food is transfered from the digestive system to the blood and lymph.
- Absorption
3- Diffusion of water molecules from a diluted medium of high water concentration to another of lower water concentration.
- Osmosis.
4- A muscular valve that passes food to the stomach and prevents its returning to the Oesophagus.
- Cardiac sphincter.
5- A digestive enzyme that changes fats into fatty acids and glycerols.
- Lipase.
6- The ability of colloidal substances to absorb water.
- imbibition.
7- Disc shaped granules extend in piles inside the chloroplasts.
- grana.
8- A medical case resulted from partial digestion of the stomach wall.
- Peptic ulcer.
9- Breaking down polymers into monomers with the help of hydrolysis and enzymes.
