Quinn Et Al

question 13

Multiple Choice

Quinn et al.(1993) examined the abilities of 3- and 4-month-old infants.After they looked at a series of photographs of cats,the infants were shown two new photos,one of a cat and one of a dog.They looked longer at the photograph of the dog.This indicated that infants this age ____.

• A)like dogs better than cats
• B)were bored with the cat photos
• C)could categorize
• D)were not sure what dogs were

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Definitions:

Proteolytic Enzymes

are enzymes that break down proteins into smaller peptides or amino acids.

Capases

A family of protease enzymes that play essential roles in apoptosis (programmed cell death) and inflammation.

Syncytial Blastoderm

A stage in early embryonic development in some animals where the embryo consists of a single cell layer surrounding a yolk, without individual cell boundaries.

Cellular Blastoderm

An early stage in embryonic development where cells form a single layer around the yolk.