On the standard curve of 2-deoxyadenylsine reacted with DPA, 0.33 mL of your DNA sample corresponded to 12.5 ug. What is the concentration of DNA in your sample? Show your calculations

How many chromosomes are shown in a normal human karyotype? a. 2 c. 44 b. 23 d. 46

Compared to absolute dating, what is a disadvantage of relative dating? Fossils must be in undisturbed rock layers to determine age. Age, in years, cannot be determined for an individual fossil.

Describe the feeding relationship among the organisms in the food chain

Where does the carbon that reacts to form carbon dioxide come from?

Which of the following does NOT describe how fossils form A.) Living things die and their remains are buried by sediments B.) Coal forms from decaying plants C.) Wood becomes petrified D.) Freezing preserves the remains of an organism

What kingdom did the first organisms on Earth belong to?

Fried foods and sweets are good sources for: water 2) vitamin B 3) fats 4) protein

What scientific discovery earned Einstein his first Nobel prize? a. antimatter c. the photoelectric effect b. nuclear fusion d. None of the above

In humans, an X-linked disorder called coloboma iridia (a fissure or cleft in the iris of the eye) is a recessive trait. A couple with normal eyes has a daughter with coloboma iridia.

When a whale carcass sinks to the ocean floor it creates an environment appropriate for succession to happen. How would you explain this phenomenon?