Animal stomachs have enzymes that break down food into smaller components. Enymes do this by ... (a) increasing stomach acids (b) becoming part of the smaller products (c) raising the pH (d) taking part in the reaction

Allergies are the most common type of immune system disorder. Describe an allergic reacion and explain why it may be harmful. (5 marks)

Organisms that live in the chaparral have developed unique adaptations that aid in their survival. The California quail is a small, plump game bird with short wings that can be found in the chaparral regions of California.

In what respect is a mycelium and a fruiting body similar? A. Both are made of hyphae. B. Both are found above the ground. C. Both produce reproductive spores. D. Both absorb nutrients underground.

Which of the following best describes the structural relationship between genes, chromosomes and DNA? A. Genes consists of two long strands of chromosomes, and each of these two strands consists of molecules called DNA. B.

If an organism's diploid chromosome number is 18, how many different possible combinations of homologous chromosomes lining up during meiosis exist for the eggs or sperm produced by that organism? a. 128 b. 18 c. 36 d. 9 e. 512

Homeostasis is maintained in the body through negative feedback mechanisms. true or false

In animals such as hydra and corals, new individuals arise as buds on the body of an existing animal. this is budding, a form of

What is the purpose of the carbon cycle?

Which best describes the nucleus of an atom? a. it is where the electrons and protons are located. b. it is the negatively charged part of the atomC. it is the part f the atom with the greatest massD.

Oil-rich countries in the Middle East cover about 4% of Earth's total land area but possess about 48% of the world's known oil reserves.