Food IS moved through the digestive tract primarily by

A. Bike produces by the pancreas

B. The enzymes amylase and pepsin

C. Muscular contractions

D. Hydrochloric acid in the stomach

Eating the leftovers of another hunter

A wide sloping deposit of sediment formed where a stream leaves a mountain range is called a (n) a. divide. b. drainage basin. c. alluvial fan. d. slump.

A tropical wet climates exists in the United States only in

As various vertebrate groups evolved, the structure of the heart changed. Which of the following describes the heartsame of birds and mammals?

Which of the following statements is incorrect? A. Sweating is more likely to occur on hot days than on cool days. B. Sweating is likely to occur after strenuous exercise. C. Evaporation of sweat warms the body. D.

What covers the ends of bones in adults? A blood B cartilage C marrow D ligaments

What two substances are made in the nucleus and move into the cytoplasm?

Why did this happen

Complex chemical catalysts produced by living cells are enzymes.

A scientist is studying a gene known as the XYZ gene in eukaryotes. Into a eukaryotic cell, she inserts an miRNA that is complementary to a portion of the XYZ mRNA found in the cell. What result would you predict