Test
Enzymes
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (9)
1Which of the following statements correctly relates to enzymes? Check all that apply.
- AThey are biological catalysts.
- BThey are used up during reactions.
- CThey are effective in small amounts.
- DThey are found exclusively inside cells.
2Unlike [blank_start]chemical[blank_end] catalysts, enzymes do not require [blank_start]extreme[blank_end] temperatures or [blank_start]pH[blank_end] to function efficiently. Also, they [blank_start]don't[blank_end] produce by-products, are highly [blank_start]specific[blank_end], and their activity can be regulated by cells.
- Achemical
- Bbiological
- Cgastrointestinal
- Dgaseous
- Eextreme
- Fmild
- GpH
- Hosmotic pressures
- Iby-catalysts
- Jdilution
- Kdon't
- Ldo
- Musually
- Nspecific
- Oacidic
- Puncommon
- Qinsoluble
3Metabolic substrates and products sometimes regulate the activity of enzymes in their own and other metabolic pathways.
- AVerdadero
- BFalso
4[blank_start]Catalase[blank_end] is an example of a four-polypeptide intracellular enzyme. It breaks down [blank_start]hydrogen[blank_end] [blank_start]peroxide[blank_end] into oxygen and [blank_start]water[blank_end]. [blank_start]Amylase[blank_end] is an extracellular enzyme produced by the [blank_start]pancreas[blank_end] and released into the [blank_start]small[blank_end] [blank_start]intestine[blank_end]. It breaks down [blank_start]starch[blank_end] into maltose. Similarly, t[blank_start]rypsin[blank_end] breaks down proteins into peptides.
- Arypsin
- BAmylase
- CCatalase
- Dhydrogen
- Eperoxide
- Fwater
- Gpancreas
- Hsmall
- Iintestine
- Jstarch
5Enzymes bind to their substrate at their [blank_start]active[blank_end] site. This consists of [blank_start]6-10[blank_end] amino acids that form a [blank_start]tertiary[blank_end] structure which is [blank_start]complementary[blank_end] and [blank_start]specific[blank_end] to the substrate.
The role of [blank_start]cofactors[blank_end] is to ensure that enzymes act at the appropriate rate.- Aactive
- Bcharged
- Ctertiary
- Dspecific
- E6-10
- F2-4
- G60-100
- H150-200
- Itertiary
- Jprimary
- Ksecondary
- Lquaternary
- Mcomplementary
- Nreduced
- Osynthesised
- Pprimary
- Qspecific
- Rnon-specific
- San oxidising agent
- Ta reducing agent
- Ucofactors
- Vvitamins
- Wactive sites
- Xpolypeptides
6ESC stands for [blank_start]enzyme[blank_end] [blank_start]substrate[blank_end] [blank_start]complex[blank_end].
- Aenzyme
- Bsubstrate
- Ccomplex
7Which of the following statements are TRUE about enzyme action?
- AEnzyme-substrate collisions are random.
- BEnzyme-substrate collisions happen less frequently when heat/kinetic energy is high.
- CEnzyme active site and substrate are specific and complementary.
- DThe ESC is usually held together by covalent bonds.
- ESubstrate(s) is/are broken down or combined while in the ESC.
8The ESC is unstable, holding more energy than the substrate(s), which in turn holds more energy than the product(s).
- AVerdadero
- BFalso
9According to the [blank_start]induced[blank_end] fit hypothesis, formation of the ESC creates subtle changes in the [blank_start]active site[blank_end] [blank_start]tertiary[blank_end] structure, which allows [blank_start]bonds[blank_end] to break and form during the biological reaction.
- Ainduced
- Block and key
- Cactive site
- Dsolubility
- EpH
- Ftertiary
- Gprimary
- Hsecondary
- Iquaternary
- Jbonds
- Kpolypeptides
- Lenzymes
- Mthe lock-and-key
Información
- Descripción
- (Enzymes) Biology Test sobre Enzymes, creado por Daniel Brand el 28/02/2017.
- Autor
- Daniel Brand
- Idioma
- English
- Visitas
- 3.379
- Etiquetas
- Valoración
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