Question 3

•

1 pts

In a well designed experiment, how many independent variables should be tested at a

time?

How ever many the scientist needs for that experiment.

1

2 or more

None

Question 4

3 pts

How many chromatids are in twenty duplicated chromosomes

Evidence from the fossil record to support punctuated equilibrium would include

Where does glycolysis take place in a cell? A. Nucleus B. Mitochondrion C. Cytoplasm D. Cell membrane

A patient has been diagnosed with osteoporosis and asks the nurse practitioner, "what is osteoporosis?" the nurse practitioner knows that osteoporosis can be defined as:

A developing cell that is totipotential is capable of developing into any type of cell in the organism. is totally committed to one cell type for life. cannot divide. is totally developed and will not differentiate.

Which term means the release of a tendon from adhesions?

To produce 100% offspring with yellow pods and wrinkled seeds, what parental genotypes must a researcher use?

Which statement is NOT true of genetic drift? A) genetic drift creates greater diversity within a population B) population bottleneck and founder effect are two types of genetic drift C) the smaller the population, the greater the impact genetic

Which of the following statements about biodiversity is true? a. Changes to biodiversity always positively affect an ecosystem. b. Changes to biodiversity always negatively affect an ecosystem. c.

Which eras ended with a mass extinction? O A. Paleozoic and Precambrian O B. Mesozoic and Paleozoic OC. Mesozoic and Cenozoic O D. Cenozoic and Paleozoic