Which characteristics correctly describe prokaryotic cells? (Select all that apply.)

A. have no nucleus

B. have a nucleus

C. have membrane-bound organelles

D. have no membrane-bound organelles

After a steroid hormone binds to its receptor to form an active complex, A) adenyl cyclase is activated. B) cyclic nucleotides are formed. C) G proteins are phosphylated. D) gene transcription is initiated. E) protein kinases are activated.

Cheryl recently moved across the state, and began really missing the native trees she had at her old house. So, she bought some of the same type of tree and planted them at her new house.

What produces 32 ATP molecules

Which of the following animals has a heart in which oxygenated and deoxygenated blood mix? a. human b. fish c. frog d. bird e. mammal

A trust that is involved in preserving a park wants to sell its land. This sale will destroy the park and impact the environment. Which rights can prevent this sale of land? A. Use Rights B. Alienation Rights C. Management Rights D. Ownership Rights

Herbaceous stems grow thicker as a result of cell division in the

How do psuedopods work? A. The cytoplasm extension discharges digestive juices toward it's food. B. The cytoplasm extensions surround the food, and excretes digestive juices to digest it's food. C.

Chest tubes may be requrired for ?

The movement of water from ocean through the atmosphere and back

Suppose both parents Can roll their tongue's but their son cannot. Draw a pedigree showing this trait, and label each symbol with the appropriate genotype