مراجعة أحياء أولى ثانوى لغات (biology)
Complete the following:
1- Carbohydrates are from…….. molecules, while salts are from …molecules.
2- The general formula of carbohydrates is …
3- Biological macromolecules are formed by ………. Process
4- Sucrose polymer consists of ……. molecule and ……one bound together
5- ………. and ……... are from derivative lipids
6- Lipids forming hormones are called ……………
7- Lipids are formed from ……. linked with …….. molecule .
8- The acidic functional group forming an amino acid is called……., while that
basic one forming it is called……….
9 - Proteins are formed from groups of amino acids linked together by
……bond
10-Haemoglobin protein is found in blood and it contains ……… element,
while thyroxin contains ……………… element.
11- A nucleotide consists of ……. , ……… and …………..
12- …………… sugar molecule forms RNA, while ………. Sugar forms DNA
molecule
شرح أحياء لغات biology أولى ثانوى الجزء الأول (Carbohydrates and Lipids)
13- Building proteins from amino acids is an example on ……… process,
while breaking up glucose molecule to get energy is called............
10-Haemoglobin protein is found in blood and it contains ……… element,
while thyroxin contains ……………… element.
11- A nucleotide consists of ……. , ……… and …………..
12- …………… sugar molecule forms RNA, while ………. Sugar forms DNA
molecule
13- Building proteins from amino acids is an example on ……… process,
while breaking up glucose molecule to get energy is called............
them work in basic medium such as ………….
15- Most enzymes work at pH of ………
14- Some enzymes work in acidic medium such as…………., while some of
B)Give reason for:
1-Some birds' feathers are covered with oils
2- Waxes cover the leaves of desert plants
3- The biological importance of phospholipids
4- When the temp. of an enzyme increases more than its optimum
temperature, its activity decreases gradually until it stops
5-Albumin is a simple protein while casein is a conjugated protein.
6- There are millions of protein compounds , although the number of amin
acids is limited .
C) Mention the importance of:-
1- Carbohydrates
2- Starch
3- Glycogen
4- ATP Compounds in the cell
5- Lipids
6- Cellulose
7- Phospholipids
8- Steroids
9- Proteins
10- DNA
11- RNA
D)Choose the correct answer:
1-Animals and humans store carbohydrates in ………
A- Liver B- Kidneys C- Muscles D- A&C
2- Starch is from ……..
A- simple sugars B- complex sugars C- Waxes D- Steroids
3- ……… forms the cell walls of plant cells
A- Cellulose B- Starch C- Galactose D- Glucose
4- A process which breaks some molecules to release energy from them is
called ………
A- Oxidation B- Reduction C- Anabolism D-catabolism
5- Casein is a protein which contains ……… element
A- Iron B- Iodine C- Phosphorus D- Sulphur
6- ……. are the basic component of lymph and blood in human body.
A- Proteins B- Carbohydrates C- Lipids D- Nucleic acids
7- Polymers of proteins are composed of monomers called …….
A- Nucleic acids B- Amino acids C- Citric acids D- Uric acid
8- …………… reagent is used for detecting lipids .
A- Biuret B- Bendict C- Sudan 4 D- Starch
9- Amino acids are liniked together by …………. Bonds .
A- peptide B- Covalent C- ionic D- hydrogen
10- The sugar which enters in the structure of RNA is considered from the……….. .
A- Poly saccharides B- monosacchnrides C- disaccharide
E)Compare between:
1-Simple sugars and complex sugars.
2- Fats and oils.
3- Structure of DNA and RNA.
4- Simple proteins and conjugated proteins.
5- Anabolism and catabolism.
F)What is meant by:
1- Enzymes
2-Metabolism
3- Polymerization
G)Give an example on:
1- Monosaccharides
2- Disaccharides
3- Polysaccharides
4- Simple lipids
5- Complex lipids
6- Derivative lipids
7- Simple protein.
8- Conjugated protein.
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