The double helix of dna is which level of structure?

a. primary

b. secondary

c. tertiary

d. quaternary

an amoeba is a single celled organism that feeds on algae plant cells and bacteria when an amoeba feeds it first makes contact with the food particle next the amoeba starts to surround the particle once the particle is completely engulfed it is

What type of burns are the result of current flowing through and exiting the body?

What most determines the types of plants and animals that inhabit a land-based biome? Choose exactly two answers that are correct. A. the air pressure B. the level of nitrogen in the air C. the amount of precipitation D. the temperature

A nurse on an inpatient medical-surgical unit is taking care of a patient with acute gastritis. the patient has a nasogastric tube (ngt) to low-intermittent suction with bilious aspirate.

The supply chain function works with marketing and engineering to identify and qualify suppliers of goods and services as well as manage on-going supplier relationships. This supply chain activity is A. forecasting. B. logistics. C.

John wants to test how temperature affects the mass of sugar that can be dissolved in water. Which of the following factors will John expect to change in response to the differences between the control group and the experimental group? O A.

The lion's scientific name is Panthera leo. The leopard's scientific name is Panthera pardus. The tiger's is Panthera tigris. Which statement is true? A) All 3 animals share a genus. B) All 3 animals share a species.

Humans have a huge impact on ecosystems today. Talk about why we can no longer study most ecosystems that have not been touched by humans. Talk about some of the large scale issues we are causing in our environment and ecosystems today.

Why is it important to identify the presence of fecal contamination in the enviorment?

An aquifer has been compared to a sponge. Think about this analogy for a moment explain why the use of the word quotations "sponge" is more appropriate in the use of "underground river" quotes to describe aquifers.