*Question*
Q: What two things collide to cause gas pressure?   Read this paragraph and choose the correct option from the provided answers:  Gas pressure is the result of collisions between gas particles and an object.   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*
Q: While enzymatic hydrolysis proceeds, peristalsis moves the mixture of chyme and digestive juices along what?   Read this paragraph and choose the correct option from the provided answers:     Choices:  - esophagus  - stomach  - large intestine  - small intestine   A:
**Answer**
small intestine

*Question*
Q: How many mass distinctions have radically altered the history of life?   Read this paragraph and choose the correct option from the provided answers:     Choices:  - six  - one  - four  - five   A:
**Answer**
five

*Question*
Q: What replicates in the s phase of interphase, resulting in chromosomes composed of two linked sister chromatids?   Read this paragraph and choose the correct option from the provided answers:  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.   Choices:  - protein  - hormones  - RNA  - dna   A:
**Answer**

dna