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Biology > Bioenergetics > Flashcards

Bioenergetics Flashcards

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1
Q

What is the word and balanced symbol equation for photosynthesis?

A

Carbon dioxide + water (+light energy) → glucose + oxygen
6CO² + 6H²O → C⁶H¹²O⁶ + 6O²

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2
Q

What are the uses of photosynthesis?

A

Respiration: to release energy
Making cellulose: to strengthen cell walls
Making amino acids: for protein synthesis
Stored as oil or fats: for storing in seeds
Stored as starch: to be used as an energy reserve for when there is no photosynthesis

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3
Q

Is photosynthesis an endothermic or exothermic reaction?

A

Endothermic

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4
Q

What are the four limiting factors in photosynthesis?

A

Light intensity, carbon dioxide concentration, amount of chlorophyll, temperature

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5
Q

What is the word and balanced symbol equation for aerobic respiration?

A

Glucose + oxygen → carbon dioxide + water (+ energy)
C⁶H¹²O⁶ + 6O² → 6CO² + 6H²O

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6
Q

What are the uses of the energy released in respiration?

A

Growth and repair
Active transport
Movement
Maintaining body temperature

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7
Q

Why do we respire anaerobically?

A

When we cannot get enough oxygen for our tissues to keep up with the demand of aerobic respiration

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8
Q

What is the word equation for anaerobic respiration?

A

Glucose → lactic acid (+ energy)

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9
Q

Why is anaerobic respiration not preferable to aerobic respiration?

A

Because the glucose isn’t completely broken down and less energy is released and lactic acid build up is created which needs to be removed later

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10
Q

What is an oxygen debt?

A

The build up of lactic acid that occurs during anaerobic respiration that requires oxygen to break it down

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11
Q

What is fermentation?

A

Anaerobic respiration occurring in yeast

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12
Q

What is the word and balanced symbol equation for fermentation?

A

Glucose → ethanol + carbon dioxide
C⁶H¹²O⁶ → 2C²H⁵OH + 2CO²

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13
Q

What is metabolism?

A

The sum of all the chemical reactions that happen in a cell or in the body

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14
Q

What are some examples of metabolic reactions?

A

Formation / breakdown of glycogen
Excess protein is broken down to form urine
Respiration
Photosynthesis
Formation of starch
Formation of cellulose
Formation of protein
Formation of oil and fat
Digestion

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15
Q

What are the factors that can affect someone’s metabolic rate?

A

Amount of exercise
Genetics
BMI
Gender
Age

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16
Q

What is metabolic rate?

A

The rate of all metabolic reactions in the body

Biology (7 decks)

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