วันพฤหัสบดีที่ 18 ธันวาคม พ.ศ. 2557

Cell test 2

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Quiz: Parts of the Cell

1. What part of the cell is responsible for breaking down and digesting things?
ribosomes
lysosomes
endoplasmic reticulum
vacuole

2. Identify the organelle pictured.

organelle
chloroplast
endoplasmic reticulum
golgi apparatus
mitochondria

3. What part of the cell serves as the intracellular highway?
endoplasmic reticulum
golgi apparatus
cell membrane
mitochondria

4. Which of the following would you NOT find in a bacterial cell?
DNA
cell membrane
golgi apparatus
ribosomes

5. Which of the following is found in plant cells, but not animal cells?
cell wall
vacuole
mitochondria
endoplasmic reticulum

6. The jellylike interior of the cell is called the:
vacuole
cytoplasm
cytoskeleton
nucleus

7. Identify the organelle.

organelle
golgi apparatus
endoplasmic reticulum
mitochondria
lysosome

8. What part of the cell makes proteins?
ribosomes
mitochondria
lysosomes
vacuole

9. Where are ribosomes usually located in animal and plant cells?
inside the nucleus
near the cell membrane
on the endoplasmic reticulum
inside the vacuole

10. What part of the cell serves to process, package and export proteins?
mitochondria
endoplasmic reticulum
nucleolus
golgi apparatus


Score =
Correct answers:


credit : http://www.biologycorner.com/quiz/qz_cell_parts.html

Cell test 1

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Cell Organelles and Their Functions

1. This organelle functions in cellular respiration:
lysosome
endoplasmic reticulum
mitochondrion
golgi apparatus
2. The organelle functions to package and deliver proteins:
lysosome
endoplasmic reticulum
mitochondrion
golgi apparatus
3. Cell organelles are located within the ____ of the cell.
nucleus
cytoplasm
cell membrane
lysosomes
4. The endoplasmic reticulum functions to:
transport materials
destroy old cell parts
make ribosomes
package proteins
5. Genetic material is contained within the ___ of the cell.
ribosomes
cytoplasm
nucleus
nucleolus
6. This organelle is responsible for destroying worn-out cell parts:
lysosomes
mitochondrion
golgi apparatus
ribosomes
7. The _____ controls what enters and leaves the cell.
mitochondrion
golgi apparatus
nucleus
cell membrane
8. The rough endoplasmic reticulum has ____ located on it.
lysosomes
cytosol
ribosomes
proteins
9. Located within the nucleus, it is responsible for producing ribosomes:
centrosome
nucleolus
lysosome
endoplasmic reticulum
10. Which structure is directly responsible for the formation of proteins within the cell.
lysosomes
vacuoles
centrioles
ribosomes
Score =
Correct answers:


credit : http://biologycorner.com/quiz/qz_cell.html

วันพุธที่ 10 ธันวาคม พ.ศ. 2557

DNA structure test


1. A nucleoside is
A nucleotide without sugar
A nucleotide without phosphate
A nucleotide without nitrogenous base
A nucleotide without sugar only
2. The adjacent nucleotides are joined by
Ionic bond
Hydrogen bond
Phosphodiester bond
All of these
3. According to Chargaff’s rule, in a DNA molecule
The amount of Adenine and thymine= The amount of guanine and cytosine
The amount of cytosine and Guanine= The amount of adenine and cytosine
The amount of Adenine and Guanine= The amount of thymine and cytosine
All of these
4. Watson and Cricks double helical DNA is a
A-DNA
B-DNA
Z-DNA
D-DNA
5. The two strands in a DNA double helix are joined by
Hydrogen bonds between sugars
Phosphodiester bonds between sugars
Hydrogen bonds between bases
Phosphodiester bonds between sugars
6. Who all got the Nobel prize for discovering the structure of DNA double helix
Watson and Crick
Watson, Crick and Wilkins
Watson, Crick and Franklin
Watson, Crick and Pauling
7. The diameter of DNA helix is
10 Angstrong
21 Angstrong
1nm
2 nm
8. The distance between two adjacent nucleotide is
6.8 Angstrong
3.4 Angstrong
1.7 Angstrong
10 Angstrong
9. DNA is
Positively charged
Negatively charged
neutral
none of these
10. Which of the following statement is true
The two DNA strands are parallel and complementary
The two DNA strands are anti parallel and non-complementary
The two DNA strands are anti-parallel and complementary
None of these

Score =
Correct answers:


credit : http://www.quizbiology.com/2013/05/biology-quiz-on-dna-structure.html

Enzyme test


1. An enzyme is
lipid
cabrohydrates
protein
nucleic acid
2. An enzyme promotes a chemical reaction by
lowering the energy of activation
increasing the energy of activation
changing the free energy
None of these
3. The function of an enzyme is to
change the directions of reactions
control the equilibrium
change the rates of chemical reactions
All of these
4. The word enzyme was coined by
Kunhe
Koshland
Louis Pasteur
Fischer
5. First enzyme to be isolated in pure crystalline form was
Zymase
Oxygenase
Hexokinase
Urease
6. Which of the following have no enzymes of their own ?
Bacteria
Cynobacteria
Viruses
All of these
7. Proteinaceous nature of enzymes are discovered by
Kunhe
Koshland
Buchner
Sumner
8. Which of the following enzyme is not proteinaceous in nature
Urease
Peptidiase
Ribozyme
Phosphatase
9. Which of the enzyme has highest turn over number?
PEP Carboxylase
Phosphorylase
Lysozyme
Carbonic anhydrase
10. Which of the enzyme has lowest turn over number?
Lysozyme
Carbonic anhydrase
PEP Carboxylase
Phosphorylase

Score =
Correct answers:


credit : http://www.quizbiology.com/2013/05/biology-quiz-on-enzymes.html