Which of the following is a theory for the dinosaur extinction?

1. Dinosaurs were allergic to pollen

2. Increased Radiation Levels

3. Diseases From Other Animals

4. All Of Above

In what two places may oxygen for cellular respiration be found?

The goat has body cells containing 30 chromosomes. Assume that one germ cell of a male goat undergoes meiosis and produces four sperm cells. Which of the following words does NOT describe each sperm cell? A. haploid B. zygote C. gamete D.

How many molecules of DNA would result from one molecule after four cycles of PCR? A. 16 B. 4 C. 2 D. 32

If a new animal was discovered that spent half of its life underwater breathing with gills and half of its life on land breathing with lungs, which group of animals would it most likely fit into? fish amphibian mammal insect

A patient who is postoperative is experiencing abdominal distention and is having difficulty expelling

What muscle fiber is the thickest and has cross bridges?

To make 1+1=1 what need to happen to the DNA of the parents

Provide two examples of marine organisms that could experience negative impacts because of an ocean with a lower (more acidic) pH.

The mating of a horse and a donkey produces a mule, which is a viable offspring that is infertile. We would conclude that A. A house and a donkey are members of the same species B. A mule can fall into the species lines of both a mule and a horse. C.

How does waste move from the kidney to the bladder in the human excretory systems