Quiz
Enzymes
This quiz has question types that open in the usual player.
Questions in this quiz (15)
1What is Km?
- Aa natural, fixed quality of an enzyme
- Bthe theoretical maximum reaction rate that can be achieved by an enzyme
- Cthe rate of formation of an ES complex
- Dthe rate of dissociation of an ES complex
2What is Vmax?
- Aa natural, fixed quality of the enzyme
- Bthe theoretical maximum reaction rate that the enzyme can achieve
- Cthe highest concentration of substrate in an enzyme-catalysed reaction
3Which factors affect rate of reaction?
- ApH
- Bsubstrate/enzyme conc.
- Cinhibitors
- Dtemperature
- Eall of the above
4Label the axes
- AVmax
- BVmax/2
- CKm
- DVmax
- EVmax/2
- FKm
- GVmax
- HVmax/2
- IKm
5DIPF alters [blank_start]acetylcholinesterase[blank_end], so it switches [blank_start]off[blank_end] the motor neurone and causes [blank_start]paralysis[blank_end].
- Aacetylcholinesterase
- Boff
- Cparalysis
6Parathion is an [blank_start]insecticide[blank_end]. Long-term exposure causes [blank_start]cholinesterase[blank_end] depression, meaning the motor neurone is permanently switched [blank_start]on[blank_end]. This causes [blank_start]tremors[blank_end] and [blank_start]hyperventilation[blank_end].
- Ainsecticide
- Bantidepressant
- Cchronic
- Dcholinesterase
- Eseasonal
- Ftemporary
- Goff
- Hon
- Itremors
- Jsuffocation
- Kmania
- Lhyperventilation
- Mloss of motor control
- Nnightmares
7When a competitive inhibitor binds to the active site, what happens to the Vmax and the Km value?
- Anothing
- Bhigher Vmax, same Km
- Csame Vmax, higher Km
- Dlower Vmax, higher Km
8When a non-competitive inhibitor binds to the active site, what happens to the Km and Vmax values?
- Asame Vmax
- Bhigher Vmax
- Clower Vmax
- Dsame Km
- Ehigher Km
- Flower Km
9Label the following pathway. Hint: this is where aspirin and ibuprofen work here.
- Acyclooxygenase-2
- Bcyclooxygenase-1
- Cnon-steroidal anti-inflammatory drugs
- Dprostoglandins
- Eprostoglandins
- Finflammation
10Label the enzymes and their cofactors involved in this reaction.
- Aalcohol dehydrogenase
- Bpyruvate carboxylase
- CNADH
- Dbiotin
11What is the most common enzyme deficiency?
- Aglucose-6-phosphate dehydrogenase
- Bthipurine methyl transferase
- Cglutathione reductase
12Defects in the G6PDH gene is more common in which populations?
- ACaucasian
- BSouth Asian
- CSouthern Mediterranean
- DKurdish Jewish
- EAfrican American
13Symptoms of G6PDH deficiency can include:
- Aheadaches
- Bback and joint pain
- Cjaundice, which can lead to kernicterus in infants
- Dhaemolytic crises, triggered by certain foods/drugs/infections
- Einfertility
14The anti-[blank_start]malarial[blank_end] drug, [blank_start]Primaquine[blank_end], can trigger a [blank_start]haemolytic[blank_end] crisis in someone with a G6PDH deficiency. It does this by increasing the amount of [blank_start]peroxides[blank_end], which damage red blood cells.
- Amalarial
- BPrimaquine
- Chaemolytic
- Dperoxides
15Who would be most sensitive to TPMT treatment?
- Ahomozygous dominant for TPMT mutation
- Bheterozygous for TPMT mutation
- Chomozygous recessive for TPMT mutation
Information
- Description
- Quiz on Enzymes, created by Barirah Ashfak on 04/01/2019.
- Author
- Barirah Ashfak
- Language
- English
- Views
- 1
- Rating
- No ratings yet Rate this quiz