Biochemical Processes in Ripening Fruits Quiz

Explore postharvest physiology with 17 questions on enzymes, hormones, and gases influencing fruit ripening. Test your knowledge now!

#1

Which enzyme plays a crucial role in breaking down pectin during fruit ripening?

Amylase
Polyphenol oxidase
Pectinase
Lipase
#2

What role does starch conversion into sugars play in fruit ripening?

Increases acidity
Enhances color
Promotes sweetness
Accelerates decay
#3

Which plant hormone acts as a ripening inhibitor and is sometimes used to delay fruit ripening in storage?

Gibberellin
Cytokinin
Abscisic acid
Auxin
#4

During fruit ripening, what role does the enzyme amylase play?

Cellulose breakdown
Starch hydrolysis
Pectin degradation
Protein denaturation
#5

Which compound is responsible for the characteristic aroma of ripe fruits?

Lycopene
Terpenes
Anthocyanins
Carotenoids
#6

What is the primary gas involved in the regulation of fruit ripening?

Oxygen
Carbon dioxide
Ethylene
Methane
#7

Which hormone is responsible for the initiation of fruit ripening?

Auxin
Cytokinin
Ethylene
Gibberellin
#8

Which organelle is actively involved in the synthesis of ethylene during fruit ripening?

Chloroplast
Golgi apparatus
Mitochondrion
Endoplasmic reticulum
#9

In the context of fruit ripening, what does the term 'respiration climacteric' refer to?

Increased production of ethylene
Elevated respiratory activity
Decreased oxygen consumption
Stimulation of photosynthesis
#10

What is the role of lycopene in the ripening process of certain fruits?

Promotes acidity
Enhances aroma
Contributes to color development
Induces sweetness
#11

Which part of a fruit is typically responsible for the production of ethylene during the ripening process?

Seeds
Pulp
Skin
Stem
#12

During fruit ripening, what is the primary cause of the softening of the fruit tissue?

Cellulose breakdown
Starch accumulation
Pectin degradation
Protein denaturation
#13

Which of the following fruits is known for its climacteric type of ripening?

Banana
Strawberry
Grapes
Watermelon
#14

Which class of enzymes is responsible for the degradation of cell wall components during fruit ripening?

Proteases
Lipases
Cellulases
Amylases
#15

What environmental factor can influence the rate of fruit ripening?

Humidity
Gravity
Magnetic fields
Infrared radiation
#16

What is the primary function of the enzyme polygalacturonase in fruit ripening?

Starch hydrolysis
Pectin degradation
Sugar synthesis
Protein denaturation
#17

Which fruit is known for its non-climacteric ripening behavior?

Apple
Avocado
Tomato
Kiwi

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