*Question*
Answer the following question given this paragraph:   Gas pressure is the result of collisions between gas particles and an object.   Q: What two things collide to cause gas pressure?   Choices:  - gas particles and an electron  - light particles and an object  - gas particles and a wave  - gas particles and an object  A:
**Answer**
gas particles and an object

*Question*
Answer the following question given this paragraph:      Q: While enzymatic hydrolysis proceeds, peristalsis moves the mixture of chyme and digestive juices along what?   Choices:  - esophagus  - stomach  - large intestine  - small intestine  A:
**Answer**
small intestine

*Question*
Answer the following question given this paragraph:      Q: How many mass distinctions have radically altered the history of life?   Choices:  - six  - one  - four  - five  A:
**Answer**
five

*Question*
Answer the following question given this paragraph:   DNA replicates in the S phase of interphase. After replication, the chromosomes are composed of two linked sister chromatids. When fully compact, the pairs of identically packed chromosomes are bound to each other by cohesin proteins. The connection between the sister chromatids is closest in a region called the centromere. The conjoined sister chromatids, with a diameter of about 1 µm, are visible under a light microscope. The centromeric region is highly condensed and thus will appear as a constricted area.   Q: What replicates in the s phase of interphase, resulting in chromosomes composed of two linked sister chromatids?   Choices:  - protein  - hormones  - RNA  - dna  A:
**Answer**

dna