A similarity between humans and many other

multicellular animals is that they

(1) occupy the same niche in most food webs

(2) are composed of organ systems

(3) have the same DNA sequences

(4) carry out autotrophic nutrition

A nursing instructor is explaining the role of vascular smooth muscle cells in relation to increases in the systemic circulation.

A botanist discovers a new plant in the jungle. Which of the following observations of the plant's characteristics would be useful in determining its identity with a dichotomous key? A. Its leaves curl up on the edges. B.

What are isoma and isotopes. what is the difference and similarity? What are their roles?

Where in the Venn diagram would you place the term "seed" when describing plant reproduction?

A bacterium lacking the receptor for responding to quorum-sensing signals would be unable to

Which of the following is a constructive process? deposition detachment transport plucking

Coal deposits were formed from? A. Plant life in ancient B. Ancient plankton and marine life C. Freshwater organisms from the last 100,000 years D. Modern plants and animals

According to the Hardy-Weinberg principals, which of the following can prohibit genetic equilibrium?

Rickettsia are obligate intracellular parasites that are transmitted by arthropods. In which of the following places would you most likely find the parasites living in the host organism during the course of infection? A.

How are viruses able to move between species?