Ch 6 Nutrition in Humans

Ch 6 Nutrition in Humans

Multiple Choice

Digestion is the process where _____, _______ and _________ food molecules are broken down into small, simple and soluble molecules that can be ________ in the body.

• large, complicated, soluble, absorbed

• large, complex, insoluble, absorbed

• large, complex, soluble, absorbed

• small, simple, soluble, absorbed

Fill in the Blanks

Egestion is when

food is removed as faeces from the anus.

Multiple Choice

Which structure is NOT part of the alimentary canal?

• liver

• oesophagus

• small intestine

• anus

Multiple Choice

What is the pathway of food in the alimentary canal?

• oesophagus > large intestine > small intestine

• small intestine > oesophagus > rectum

• stomach > anus > rectum

• stomach > small intestine > large intestine

Fill in the Blanks

Name the structure that produces saliva.

Multiple Select

Select the processes that take place in the mouth.

• chewing by teeth to break food into smaller pieces

• food is soften by mucin in saliva

• food is rolled into boli by the tongue

• food is soften by amylase in the mouth

Fill in the Blanks

Name the structure of the alimentary canal connecting the mouth and the stomach.

Fill in the Blanks

Name the process that allows the bolus of food to move down the oesophagus.

Open Ended

Define peristalsis.

Fill in the Blanks

Name the structure that secretes gastric juice.

Multiple Select

Select the component(s) found in gastric juice.

• sulfuric acid

• hydrochloric acid

• pepsin

• pepsi

Multiple Select

Which is NOT a function of hydrochloric acid?

• denatures salivary amylase

• converts inactive form of pepsin to active form

• kills harmful microorganisms in food

• provides alkaline medium for action of pepsin

Fill in the Blanks

What is partially digested food is known as?

Multiple Select

Select the substance(s) absorbed in the small intestine.

• water

• undigested food

• digested food

• mineral salts

Open Ended

Describe the function of the small intestine.

Multiple Select

Select the substance(s) absorbed in the large intestine.

• water

• mineral salts

• digested food

• undigested food

Multiple Select

Select all statements that explain how chewing food helps digestion.

• the food is softer

• the food is broken into smaller pieces

• the food has a better taste

• the food has increased surface area to volume ratio

Fill in the Blanks

Chemical digestion is different from physical digestion because it involves the action of

.

Multiple Choice

How does food at Q differ from food at P.

• it contains less protein

• it contains less starch

• in contains more protein

• it contains more starch

Open Ended

Recap: describe one function of hydrochloric acid in gastric juice.

Multiple Select

Select the 3 secretions in the small intestine.

• gastric juice

• pancreatic juice

• bile

• intestinal juice

Multiple Select

Select the enzymes found in intestinal juice.

• maltase

• lactase

• sucrase

• trypsin

Fill in the Blanks

lactose is digested by lactase into glucose and

?

Multiple Select

Which statement (s)is/are true?

• trypsin is found in intestinal juice.

• trypsin is found in pancreatic juice

• trypsin digests protein into polypeptide

• trypsin digests polypeptide into amino acids.

Fill in the Blanks

Name the enzyme that digests polypeptides into amino acids.

Fill in the Blanks

A fat molecule is made up of 1 unit of

and 3 units of fatty acids.

Fill in the Blanks

Bile breaks up large fat droplets into smaller fat droplets in a process called

?

Multiple Choice

Which statement is true?

• bile is produced by the gall bladder

• bile is stored in the gall bladder

• bile contains digestive enzymes

• bile is found in pancreatic juice

Multiple Choice

Which of the following is an energy-rich carbohydrate stored in large quantities in liver and muscle cells?

• glucose

• glucagon

• glycogen

• starch

Multiple Choice

The hormones insulin and glucagon are produced by

• small intestine

• large intestine

• liver

• pancreas

Fill in the Blanks

Name the hormone that converts stored glycogen in the liver to glucose when blood glucose concentration is low?

Multiple Select

Select the statement(s) that are true about insulin.

• it is produced by the pancreas

• it converts glucose to glycogen

• it is produced when blood glucose concentration rises above normal

• it is produced when blood glucose concentration rises below normal

Multiple Choice

Select the statements that are true about bile.

• it is produced by the liver

• it is produced by the gall bladder

• it is stored by the gall bladder and released in into the small intestine

• it is involved in physical digestion of fat

Fill in the Blanks

Name the process whereby large fat globules are broken down into smaller fat globules by bile.

Multiple Select

Which statement(s) are true about the emulsifcation of fats.

• it increases the surface area to volume ratio of fats

• it speeds up digestion of fats by lipase

• it is a form of physical digestion of fats

• it digests fats into fatty acids and glycerol

Multiple Choice

Which shows the correct path of bile after it is produced?

• gall bladder > bile duct > stomach

• gall bladder > liver > stomach

• liver > bile duct > stomach

• liver > gall bladder > small intestine

Multiple Choice

Urea is a waste product formed from the deamination of _________.

• alcohol

• glucose

• amino acids

• fatty acids

Fill in the Blanks

Name the process where excess amino acids are converted to urea in the liver.

Multiple Choice

Which of the following structure does not secrete any digestive enzymes at all?

• liver

• small intestine

• pancreas

• stomach

Multiple Select

Select the statement(s) that describe functions of the liver.

• detoxification

• storage of iron

• production of bile

• regulation of blood glucose concentrations