Where would a primary producer be located in a food chain?

middle step

last step

each step

first step

How did British manufacturing give Great Britain an advantage in the war?

Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a 0.15 M salt solution become limp and soft. From this we can deduce that A.

How many openings are in the digestive system of flatworms?

An important factor in Oswald Avery's ability to identify the "transforming principle" as DNA was the fact that proteins A. do not react with enzymes B. contain very little phosphorus C. were present in the extract made from S bacteria D.

Explain how a large tuna can remain active in cold water despite the fact that it's body temperature changes with its enviroment

Diffusion is the spontaneous movement of a substance from an area of what

Which type of mutation always creates a stop codon?

What is the main mechanism for regulating hormone secretion?

While on the Galapagos Islands, Darwin noticed that there were a number of species of finches that he theorized descended from a common ancestor.

Proposed mode of DNA replication where one daughter cells gets both strands of parent DNA and the other daughter cell gets both strands of new DNA. a. Bi-directional replication b. Dispersive replication c. Conservative replication d.