REVIEWER-PERIODICAL EXAMINATION IN SCIENCE 8

The wavelike muscle movement that pushes food through the digestive system is called _____.

• chemical digestion

• emulsification

• absorption

• peristalsis

_____are chisel-shaped teeth used for biting

• Canines

• Incisors

• Molars

• Premolars

The process by which large pieces of food are cut and crushed into smaller pieces is called.

• Absorption

• Emulsification

• Mechanical digestion

• Peristalsis

The enzyme in saliva helps to digest.

• Apple juice

• Fats

• Proteins

• Starch

The gastric juice produced in the stomach contains mucus, hydrochloric acid, and _____.

• bile

• chyme

• lipase

• pepsin

The flap of tissue that prevents food from entering the windpipe is called the _____.

• epiglottis

• esophagus

• peristalsis

• villi

Which of the following statements is NOT correct about protein nutrition?

• Foods rich in protein include red meat, fish, poultry, dairy products, legumes, nuts, and cereals.

• Ordinarily, amino acids are not used as an energy source but are incorporated into structural proteins.

• Because some amino acids are not produced in the body, a daily diet of protein rich food is needed.

• We should derive all of our dietary protein from meat.

Which of the following is the largest category in the hierarchy of classification?

• Domain

• Family

• Genus

• Phylum

The cell wall of kingdom Plantae organisms is made up of _____.

• chitin

• cellulose

• lipids

• polysaccharides

Protists that move by pseudopodia belong to which group?

• Ciliophorans

• Sarcodes

• Sporozoans

• Zooflagellates