Respiration Flashcards Preview

Biology > Respiration > Flashcards

Flashcards in Respiration Deck (21):
0

What is the sugar that is the main source of energy in living cells?

Glucose

1

What is respiration?

A chemical process in which energy is released from the breakdown of glucose

2

What is ATP?

A high energy compound synthesised using energy from the breakdown of glucose

3

What is the chemical formed by the breakdown of glucose in glycolysis?

Pyruvate

4

What is the first stage of all types of respiration in which glucose is broken down to pyruvate?

Glycolysis

5

What is aerobic respiration?

It is the process of releasing energy from glucose using oxygen

6

What is anaerobic respiration?

It is the breakdown of glucose in cells in the absence of oxygen

7

What is the chemical formed as the end product of anaerobic respiration in animal cells?

Lactic acid

8

What is fatigue?

A condition that results from a lack of oxygen and build-up of lactic acid in muscle cells

9

What is the chemical formed along with carbon dioxide as the end products of anaerobic respiration in plant and yeast cells?

Ethanol

10

Give reasons why cells need energy?

~cell division and growth
~synthesis reactions
~producing heat
~movement
~active transport
~transmissions of nerve impulses

11

What is the reason for having a series of reactions?

The energy is released slowly in small amounts and avoids damage to the cell

12

What is the equation for aerobic respiration?

Glucose + oxygen --> carbon dioxide and water

13

What is the equation for anaerobic respiration in animals?

Glucose --> lactic acid

14

What is the equation for anaerobic respiration in plant and yeast cells?

Glucose --> ethanol and carbon dioxide

15

What happens in the first stage of aerobic respiration (glycolysis)?

Glucose produces pyruvate through a series of enzyme controlled reactions

16

How many ATP are produced in aerobic respiration?

Stage 1: 2
Stage 2: 36

17

What happens during the second stage of aerobic respiration (breakdown of pyruvate)?

Pyruvate is broken down using oxygen to produce carbon dioxide and water through a series of enzyme-controlled reactions

18

How many ATP molecules are produced in anaerobic respiration?

Stage 1: 2
Stage 2: 0

19

Where does aerobic respiration take place?

Cytoplasm

20

What is a calorimeter?

It is the piece of equipment used to measure the energy content of food