Biokimpang Uts Flashcards

1
Q

Cell organels that doesn’t have membrane?
A. Lysosomes
B. Sitoplasm
C. Mitochondria
D. Ribosomes
E. Golgi body

A

D. Ribosomes

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2
Q

Pick which one of these are true?
A. Plasma membrane is the place to have photosynthesis on prokaryotes
B. All answer are correct
C. Ribosome is the place of synthetic protein
D. Organelles in eukaryotes contains within sitoplasm
E. Mitochondria the place to produce energy

A

B. All answer are correct

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3
Q

Similarities betwen prokaryotes and eukaryotes is?
A. Both have DNA as genetic material
B. Both are surrounded by membranes
C. All answer are correct
D. Both have the same metabolism process
E. Both have mitochondria

A

C. All answer are correct

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4
Q

Outer cell of nucleus is called?
A. Sitoplasm
B. Intermembrane space
C. Sitogel
D. Endoplasmic
E. All answer are correct

A

A. Sitoplasm

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5
Q

The organelle cell that contains enzymes that works under cycles of citric acid, respiration bond, and phospholipid oxidation are?
A. Lysosomes
B. Mitochondria
C. Endoplasmic reticulum
D. Golgi apparatus
E. Vacuole

A

B. Mitochondria

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6
Q

The prokaryote that synthesizes or create its own food is?
A. Bacteria
B. Mold
C. Blue green bacteria
D. E. Coli
E. Bacillus subtilis

A

C. Blue green bacteria

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7
Q

Compartments owned by eukaryotes, and not own by prokaryotes are?
A. Plasma membrane and ventikel
B. Lysosomes and endoplasmic reticulum
C. Ribosomes and nuclei
D. Mitochondria and golgi bodies
E. All answer are correct

A

D. Mitochondria and golgi bodies

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8
Q

Water in food plays a role?
A. Means of transportation
B. Reactants and reaction medium
C. Facilitator dynamic nature of macromolecules
D. All answers above a wrong
E. All answers above are correct

A

E. All answers above are correct

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9
Q

The power of water to dissolve organic molecules and inorganic molecules depends on?
A. Salt bridge.
B. Surface tension.
C. The Vander walls.
D. Hydrogen bonding.
E. All above answers are correct.

A

D. Hydrogen bonding.

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10
Q

The ability of plants to draw water from the roots to the top of the leaves is mainly due to the following properties of water?
A. Cohesion.
B. Adhesion.
C. Water as a universal solvent
D. Cohesion and Adhesion Properties
E. Water has a specific gravity of one

A

D. Cohesion and adhesion properties.

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11
Q

The amphiphatic properties of biomolecules has a meaning that?
A. There is an area rich clusters are not charge.
B. There is a non-polar functional.
C. There is an area with hydrophilic properties.
D. There is an interaction between polar groups and biomolecules with water.
E. All above answers are incorrect.

A

D. There is an interaction between polar groups and biomolecules with water.

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12
Q

Phospholipids?
A. Have a characteristic of hydrophobic and hydrophilic.
B. When broken down by Lipase it will produce one glycerol molecule, one fatty acid molecule and a phosphate compound
C. Has a membrane cell inside.
D. Has unsaturated fatty acids and amino compounds
E. All answers are correct.

A

E. All answers are correct.

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13
Q

Membrane?
A. The key components are lipids and proteins.
B. Lipid bilayer in nature
C. The inside has a hydrophobic interaction.
D. The outside layer has hydrophilic interaction.
E. All answers are correct

A

E. All answers are correct.

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14
Q

Polysaccharides that have branched chains, are composed of glucose and are energy reserves for animals?
A. Glycogen.
B. Starch.
C. Cellulose.
D. Hemicellulose.
E. Chitin

A

A. glycogen

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15
Q

Amino acid, which has 3PKA are?
A. Aspartate, lysine, and glycine
B. Glutamate., arginine, and valin
C. Lysine, arginine, and glutamate
D. Histidine, glutamate, and phenylalanine
E. Sistein, tryptophan, and proline

A

E. Sistein, tryptophan, and proline

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16
Q

Aromatic amino acid?
A. Phenylalanine., tyrosine, tryptophan
B. Phenylalanine., arginine, tryptophan
C. Prolin, phenylalanine., tyrosine
D. Histidin, tryptophan, phenylalanine
E. Sistein, tryptophan, prolin

A

A. Phenylalanine., tyrosine, tryptophan

17
Q

Proteins that play a role in cell supervision and shape?
A. Tubulin
B. Globulin.
C. Cellulose
D. Myoglobin.
E. Hemoglobin.

A

A. Tubulin

18
Q

Choose the correct statement?
A. An example of a protein that contains tertiary and quaternary secondary primary structures is hemoglobin
B. The secondary structure of proteins is the alpha helix and beta sheet
C. Tertiary structure reflects the number of conformations of a protein and how it is folded
D. Quaternary structure allows proteins to have new functions or activities
E. All answers above are correct.

A

B. The secondary structure of proteins is the alpha helix and beta sheet

19
Q

Peptide bond formation?
A. Occurs between amino acid molecules and non-amino acid molecules, for example sugar
B. Formed by a condensation reaction between the a-Carboxyl of an Amino acid and the a-Amino of the Amino acid
C. Requires one water molecule
D. Formed by a hydrolysis process
E. Occurs between the side chain of an amino acid and another amino acid

A

B. Formed by a condensation reaction between the a-Carboxyl of an Amino acid and the a-Amino of the Amino acid

20
Q

The class or groups of enzymes that catalyze the reaction of combining two molecules through hydrolysis of high-energy bonds are?
A. Hydrolase.
B. Lyase
C. Ligase.
D. Transferase.
E. Oxidareductase.

A

C. Ligase.

21
Q

Double reciprocal equation for enzyme substrate reactions that follows the Michelis Menten mechanism?
A. 1/v = (Km/Vmax) (1/S) + 1/Vmax
B. 1/v = (Vmax/Km) (1/S) + 1/Vmax
C. 1/v = (Vmax/Km) (1/S) + 1/Km
D. 1/v = (Km/Vmax) (1/S) + 1/Vmax
E. All answers in correct

A

A. 1/v = (Km/Vmax) (1/S) + 1/Vmax

22
Q

An efficient enzyme has characteristics?
A. Has a small Km
B. Has a high Vmax and Km
C. Has a high Vmax
D. Has a high Km
E. Can hydrolyze many types of substrates

A

A. Has a small Km

23
Q

An enzyme with glutamic acid in the active site?
A. Will interact nicely with nonpolar substrate at neutral pH.
B. Will have a negative charge at pH 2
C. Will have a negative charge at pH 9
D. Will interact with substrate with negative charge at 7 pH
E. Will interact with glutamic acid as substrate

A

B. Will have a negative charge at pH 2

24
Q

Ion exchange chromatography?
A. Separate molecules based on size and charge.
B. Positive gel will exclude, the positively charged molecule the latest.
C. NaCl is added to the washing buffer to help maintain the charge of the gel.
D. All answers are incorrect.
E. All answers are correct. 

A

B. Positive gel will exclude, the positively charged molecule the latest.

25
Q

Noncompetitive inhibitor?
A. Can be overcome by adding the substrate.
B. Will reduce the Vmax and Km
C. Inhibitor react with location other than the active site
D. Inhibits substrate reaction with enzymes active site
E. Binds substrate in prevent enzymatic reactions.

A

C. Inhibitor react with location other than the active site

26
Q

Enzymes that are widely used to improve the taste or flavor of cheese are
A. Catalyse
B. Lypase
C. Rennet
D. Cymotrypsin
E. Amylase

A

B. Lypase

27
Q

The lipoxidase enzyme is widely used for
A. Whitening wheat flour
B. Create a dark color for tea and chocolate products
C. Purify the juice
D. Produce beer
E. Increase the cheese flavour

A

A. whitening wheat flour

28
Q

The sugar in RNA is ____, the sugar in DNA is___
A. Deoxyribose, ribose
B. Ribose, deoxyribose
C. Ribulose, deoxyribulose
D. Rhamnose, deoxyrhamnose
E. Hexose, ribose

A

B. Ribose, Deoxyribose

29
Q

Which of the following is found on RNA but not DNA
A. Uracil
B. Deoxyribose
C. Phosphate
D. Adenine
E. Guanine

A

A. Uracil

30
Q

The sequence of one strand of DNA is: 5’ ATTGCCA 3’. What is the sequence of the complementary strand? 

A

5’ TGGCAAT 3’

31
Q

The correct statement regarding Replication is
A. Requires RNA polymerase to make RNA primers
B. Requires DNA ligase to connect the Okazaki Fragment to the Leading strand
C. It is conservative and requires DNA polymerase that works 5-3
D. Application only occurs on the Leading strand
E. Can run without opening the double strand strands

A

B. Requires DNA ligase to connect the Okazaki

32
Q

Incorrect statement regarding Post-transcriptional reactions in eukaryotes?
A. Poly A binding occurs at the 5’ end
B. Intron removal and exon splicing occur
C. This process forms mature mRNA that is ready for translation
D. There is an expectation that MRNA will leave the nucleus
E. 7-methylguanonine (m7G) occurs at the 5’ end

A

A. Poly A binding occurs at the 5’ end

33
Q

The codons which do not specify an amino acid are called?
A. Initiation code
B. Termination code
C. Propagation code
D. Promotion code
E. Elongation code

A

B. Termination code

34
Q

How many amino acids will be encoded by 5’ GAU GGU UGA UGU 3’ sequence?
A. One
B. Two
C. Three
D. Four
E. Five

A

C. Three

35
Q

AUG codes for methionine acts as a?

A. Initiation code
B. Elongation code
C. Termination code
D. Propagation code
E. All incorrect

A

A. Initiation code

36
Q

A PCR cycle consists of?

A

A. Three steps: Denaturation, primer annealing, and elongation

37
Q

To clone into a plasmid vector, both the plasmid and the foreign DNA are cut?
A. With the same restriction enzyme and mixed together
B. With different restriction enzyme and mixed together
C. With different restriction enzyme and same ligases and mixed together
D. With the combination of ligase enzymes and then separated
E. With the combination of ligase enzymes and mixed together

A

C. With different restriction enzyme and same ligases and mixed together