Unit 4.2 Animal tissues, organs and organ systems and enzymes Flashcards Preview

11B1 - AQA Biology Trilogy > Unit 4.2 Animal tissues, organs and organ systems and enzymes > Flashcards

Flashcards in Unit 4.2 Animal tissues, organs and organ systems and enzymes Deck (94)
Loading flashcards...
31

proteins are broken down into

amino acids

32

fats are broken down by

lipids

33

fats are broken down into?

fatty acid

glycerol

34

digested food is absorbed where?

small intestine

35

water is absorbed where in the digestive system?

large intestine

36

digestion of starch takes place in which organ?

mouth

small intestine

37

digestion of proteins takes place in which organs?

stomach

small intestine

38

Fats are digested in which organ?

small intestine

39

what type of substance is bile?

alkali

40

bile is made in which organ?

liver

41

The role of bile in digestion is?

to neutralise stomach acid

emulsify the fats into droplets

42

Why is it important that the bile is added as the food leaves the stomach?

to prevent the acid contents denaturing enzymes in the small intestine

43

What organs in the digestive system does the food NOT pass through?

pancreas

liver

gall bladder

44

Where does digestion begin?

Mouth

45

How are the small intestines adapted for absorption?

Folds called villi increase surface area

villi are thin

villi have an extensive blood supply

46

Where is all the undigested food stored?

rectum

47

Where does the undigested food leave the body from?

anus

48

What is the glucose absorbed in digestion used for?

delivered to our cells and used in respiration

49

What are the amino acids absorbed in digestion used for?

to make new proteins

50

Where are new proteins made in a cell?

at the ribosomes

51

organ systems work together to form

organisms

52

Where is bile stored?

gall bladder

53

How are proteins different to amino acids?

proteins are large and insoluble

amino acids are small and soluble

54

How is starch different to glucose?

starch is large and insoluble

glucose is small and soluble

55

proteases, lipases and amylases are all what type of molecule?

enzymes

56

what are enzymes made from?

protein

57

What is an enzyme?

Protein molecule that acts as a biological catalayst

58

What does an enzyme do in the body?

control and speed up the rate of chemical reactions e.g. respiration

59

Enzymes are affected by

pH

temperature

60

True or false enzymes are living

FALSE