The production of acid and enzymes by the gastric mucosa is controlled and regulated by what?

a. the central nervous system

b. short reflexes in the gastric wall

c. digestive tract hormones

d. all of the above

e. none of the above

The place where an organism lives and that provides the things they organism needs is called its

In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds.

Which statements describe sedimentary rock? Check all that apply It comes from older rocks. It forms from sediments It is one of the three main types of rocks.

Fungi can feed on both living and dead organisms. a. True b. False

The cells in your body need nutrients and other materials to stay alive. To be used by your cells, the materials must be a. slightly acidic b. eukaryotic c. dissolved in fluid d. transgenic

Why can the same earthquake have different ratings on the Richter Scale and the Moment Magnitude Scale?

Which of the statements best describes the process of crossing over during meiosis? Haploid daughter cells trade chromosomes in pairs. Homologous chromosomes pair up and exchange segments of DNA.

A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why? Popcorn sold at movie theaters is very salty, causing people to become thirsty and to buy so drinks. Explain why salty popcorn causes this thirst.

What is the function of reproductive system?

A diploid cell with 2n = 20 chromosomes goes through meiosis. how many chromosomes will each of the daughter cells have?