Bu'aan kutaa 12ffaa ba'eera; bu'aa kee eessatti akka ilaaltu

Yaadannoo boqonnaa fi gaaffii shaakalaa

Boqonnaa 3 Baayoloojii kutaa 11

Wanti fuula kana irra jiru hundi boqonnaa 3 kitaaba Baayoloojii kutaa 11 tiif: wanta boqonnaan haguugu, yaadannoo gabaabaa, gaaffii shaakalaa deebii isaanii waliin, fi viidiyoo barnootaa bakka jirutti.

Google Play irraa buufadhaa
3
Kaardii
10
Gaaffii shaakalaa boqonnaa 3
79–112
Fuula kitaabaa boqonnaa 3

Boqonnaan 3 maal haguuga

  1. 1.What are enzymes?
  2. 2.Properties and functions of enzymes
  3. 3.1General properties of an enzyme
  4. 4.2The function of enzymes
  5. 5.Protein structures
  6. 6.Enzyme substrate models
  7. 7.1Enzyme-substrate binding models
  8. 8.2Enzymatic transition state
  9. 9.Enzyme regulation
  10. 10.Types of enzymes
  11. 11.1Enzyme structural classification
  12. 12.2Basic classification of enzymes
  13. 13.Factors affecting enzyme action
  14. 14.1Description on factors affecting enzymatic actions
  15. 15.Enzyme kinetics
  16. 16.Application of enzymes in industries and their benefits
  17. 17.1Uses of enzyme application
  18. 18.Malting in Ethiopian tradition
  19. 19.Steps of modern malting
  20. 20.Why is malting for?

Yaadannoo gabaabaa boqonnaa 3

Kaardiiwwan fuula Baayoloojii kutaa 11 irratti boqonnaa kana jala galmaa'an. Tokko tokkoon bani.

V1=Vmax⁡[S]KM+[S]V_1 = \frac{V_{\max}[S]}{K_M + [S]}
V1V_1
Saffisa jalqabaa Initial velocity jedhamumol L−1 s−1\text{mol}\,\text{L}^{-1}\,\text{s}^{-1}
Vmax⁡V_{\max}
Saffisa olaanaa Maximal velocitymol L−1 s−1\text{mol}\,\text{L}^{-1}\,\text{s}^{-1}
[S][S]
Hammamtaa Substrate concentrationmol L−1\text{mol}\,\text{L}^{-1}
KMK_M
Michaelis constant: substrate concentration walakkaa maximal velocity irratti argamumol L−1\text{mol}\,\text{L}^{-1}

Yoom akka itti fayyadamtu

Saffisa wal-nyaatinsa enzyme fi substrate concentration walbira qabuuf fayyadami.

Of eeggadhu

KM kan bakka bu'u substrate concentration walakkaa Vmax irratti argamuudha malee walakkaa substrate concentration miti.

Grade 11 Biology, fuula 79-112 irraa qophaa'e; osoo hin ba'in dura yeroo lama mirkanaa'e

SadarkaaIbsa
PrimaryTartiiba qajeelaa (linear sequence) kan amino acids peptide bonds tiin walitti qabamatanii.
SecondaryKaraa hydrogen bonds gara alpha-helix yookiin beta-pleated sheets tti dacha'uu (folding).
TertiaryBoca waliigalaa three-dimensional kan side-chain interactions tiin uumamu.
QuaternaryQindaa'ina iddoo (spatial arrangement) kan folded polypeptide subunits baay'ee.

Yoom akka itti fayyadamtu

Sadarkaalee caasaa protein afran gargar baasuuf fayyadami.

Of eeggadhu

Primary structure hidhoo peptide bonds qofaan kan ijaramu yoo ta'u, secondary fi isaa ol kanneen jiran hydrogen bonds irratti hirkatu.

Grade 11 Biology, fuula 79-112 irraa qophaa'e; osoo hin ba'in dura yeroo lama mirkanaa'e

KilaasiiHojii Wal-nyaatinsaa
OxidoreductasesWal-nyaatinsa oxidation-reduction fi daddarbisa electron saffisiisu (catalyze godhu).
TransferasesFunctional groups donor irraa gara acceptor tti dabarsu.
HydrolasesHydrolysis fayyadamuun chemical bonds ciccisuu saffisiisu (catalyze godhu).
LyasesMala hydrolysis yookiin oxidation hin taaneen bonds ciccisu.
IsomerasesMolecules structural isomer tokko irraa gara isa biraatti jijjiiru.
LigasesCaccabuu di-phosphate bond kan ATP keessaa waliin wal-qabsiisuun molecules lama walitti maku.

Yoom akka itti fayyadamtu

Enzyme-oota gosa wal-nyaatinsa gaggeessaniin ramaduuf fayyadami.

Of eeggadhu

Lyases bishaan malee hidhoo kan cabsan yoo ta'u, hydrolases immoo bishaan barbaadu.

Grade 11 Biology, fuula 79-112 irraa qophaa'e; osoo hin ba'in dura yeroo lama mirkanaa'e

Gaaffii shaakalaa boqonnaa 3

Gaaffii filannoo 10 boqonnaa kana irratti barreeffaman, tokkoon tokkoon isaanii deebii fi sababa qabu. Deebii banuu dura yaali. Gaaffiin kun Ingiliffaa tiin.

Gaaffii 1

Which enzyme found in human saliva helps to break down starches into sugars?

  1. A.Lipase
  2. B.Amylase
  3. C.Helicase
  4. D.Trypsin
Deebii fi sababa agarsiisi

Deebii: B Amylase

Sababa

According to the textbook, amylase is present in saliva and converts starches into simpler sugars.

Gaaffii 2

What is the inactive protein part of a conjugated enzyme called before it joins with a cofactor?

  1. A.Apoenzyme
  2. B.Holoenzyme
  3. C.Coenzyme
  4. D.Prosthetic group
Deebii fi sababa agarsiisi

Deebii: A Apoenzyme

Sababa

A conjugated enzyme (holoenzyme) is made of a protein part called the apoenzyme, which is inactive on its own, and a non-protein part called a cofactor.

Gaaffii 3

What is the first step in the traditional Ethiopian malting process used to prepare grains for beverages like tella?

  1. A.Kilning
  2. B.Steeping
  3. C.Boiling
  4. D.Distilling
Deebii fi sababa agarsiisi

Deebii: B Steeping

Sababa

The three main steps of malting are steeping (soaking the grains in water), germinating (sprouting), and kilning (heating/drying).

Gaaffii 4

Which class of enzymes catalyzes the transfer of functional groups, such as a methyl group, from one molecule to another?

  1. A.Lyases
  2. B.Isomerases
  3. C.Transferases
  4. D.Hydrolases
Deebii fi sababa agarsiisi

Deebii: C Transferases

Sababa

Transferases are enzymes that transfer functional groups (like methyl groups) from a donor molecule to an acceptor molecule.

Gaaffii 5

Why do enzymes exhibit a colloidal nature that allows little or no dialysis across a semipermeable membrane?

  1. A.Because they have a high molecular weight and large size
  2. B.Because they are insoluble in water
  3. C.Because they carry no electrical charge
  4. D.Because they are easily destroyed by cold temperatures
Deebii fi sababa agarsiisi

Deebii: A Because they have a high molecular weight and large size

Sababa

The textbook states that the colloidal property of enzymes is their tendency to show little or no movement across semipermeable membranes because of their large size or high molecular weight.

Gaaffii 6

In the secondary structure of proteins, how is the right-handed coiled strand of an α-helix held stable?

  1. A.By peptide bonds formed only between side chains
  2. B.By hydrogen bonds between N-H and C=O groups
  3. C.By covalent bonds between metal cofactors
  4. D.By lipid attachments on the outside
Deebii fi sababa agarsiisi

Deebii: B By hydrogen bonds between N-H and C=O groups

Sababa

The α-helix is stabilized by hydrogen bonding between the hydrogen of the N-H group and the oxygen of the C=O group of amino acid residues.

Gaaffii 7

Which type of inhibitor binds only to the enzyme-substrate complex and not to the free enzyme?

  1. A.Competitive inhibitor
  2. B.Uncompetitive inhibitor
  3. C.Irreversible inhibitor
  4. D.Allosteric activator
Deebii fi sababa agarsiisi

Deebii: B Uncompetitive inhibitor

Sababa

An uncompetitive inhibitor binds only to the enzyme-substrate complex (ES) rather than the free enzyme, slowing down the reaction.

Gaaffii 8

In the food industry, which enzyme is commonly used to tenderize meat for cooking?

  1. A.Papain
  2. B.Rennin
  3. C.Ligninase
  4. D.Mannanase
Deebii fi sababa agarsiisi

Deebii: A Papain

Sababa

Papain has culinary uses specifically for tenderizing meat before cooking.

Gaaffii 9

During modern and traditional malting, why must the green malt undergo kilning (heating)?

  1. A.To stop germination so the growing plant does not consume all the starch reserves
  2. B.To completely denature all amylase and protease enzymes
  3. C.To increase moisture so bacteria can ferment the grain directly
  4. D.To convert the barley husks into pure glucose
Deebii fi sababa agarsiisi

Deebii: A To stop germination so the growing plant does not consume all the starch reserves

Sababa

Kilning dries the green malt and halts further growth. If germination continued, the growing seedling would use up all the starch reserves needed for brewing.

Gaaffii 10

How does a prosthetic group differ from a coenzyme in the structural classification of enzymes?

  1. A.A prosthetic group is firmly attached (often a metal ion), while a coenzyme is loosely attached (often a vitamin B complex).
  2. B.A prosthetic group is a protein, while a coenzyme is a lipid molecule.
  3. C.A prosthetic group is loosely bound, while a coenzyme is permanently welded by peptide bonds.
  4. D.A prosthetic group acts as an inhibitor, while a coenzyme is always an activator.
Deebii fi sababa agarsiisi

Deebii: A A prosthetic group is firmly attached (often a metal ion), while a coenzyme is loosely attached (often a vitamin B complex).

Sababa

The non-protein cofactor part is classified into firmly attached prosthetic groups (usually metal ions) and loosely attached coenzymes (usually vitamin B complex molecules).

Appiin boqonnaa kana irratti gaaffii 12 qaba; utuu hojjettuu ni sirreessa. Kan asii jiran 10 jalqabaa ti.

Fuula kitaabaa boqonnaa 3

Boqonnaan 3 Maxxansa Ministeera Barnootaa keessatti fuula 79 hanga fuula 112 ti.

Maxxansa Ministeera Barnootaa, Ingiliffaa, Fuula 294

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Yaadannoo gabaabaa Baayoloojii kutaa 11 hunda

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