Which of the following is true for a eukaryote?

A. It is one of the first life forms to appear on Earth.

B. It does not have a nucleus and organelles.

C. It must be a unicellular organism.

D. It evolved from prokaryotes.

Studying natural selection in the field can be challenging list three possible challenges

This involves replacing faulty genes with normal working genes in order to provide a "cure" for a genetic disorder: a. DNA fingerprinting c. Human Genome Project b. gene therapy d. allele testing

Why is secondary succession achieved more quickly than primary succession?

Choose the correct response of Congress toward Lincoln's Reconstruction plan of forgive and forget. A. It passed the Johnson-Sherman bill. B. Congress tried to impeach Lincoln. C. It passed the Wade-Davis bill. D.

Which of the following statements is true regarding water as a substance?

In a metabolic pathway, a typical control mechanism is to have:

Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?

Peter has just had surgery and is on nasogastric suction. this involves removing fluids from the stomach through a tube. the new intern does the suction a little too enthusiastically and removes too much hcl. what do you think will happen to the ph?

The 68-year-old client states, "i have been taking aspirin on occasion for my arthritis for many years but notice that it takes longer for it to start working now." what is the best response by the nurse?

The mid-ocean ridge is formed by the long accumulation of ocean floor sediments and millions of years of their subsequent folding and faulting. a. True b. False