Red shift

cosmic microwave background radiation

the amount of hydrogen in the universe

All indicate that the universe is

A) rotating.

B) expanding.

C) shrinking.

D) at equilibrium.

Why does recombinant DNA technology work? A. All organisms on planet Earth share the same genetic code. B. Scientists don't know how it works. That is why it is so dangerous. C. because bacteria and humans have the same eukaryotic cells

Can a scientific theory be proven wrong

The ultimate source of energy for most ecosystems is considered to be

Which of the following is the most important product of the fermentation pathway in animal cells? NAD+; ATP; lactic acid; pyruvate

What happens when subduction occurs?

1pt Blood is made up of A. nutrients, minerals, fats, and proteins B. oxygen, carbon dioxide, and sugar C. plasma, red blood cells, white blood cells, and platelets D. bone marrow cells and water

One of the first breakthroughs in biotechnology was the discovery of the gene that makes insulin. Part of this process involved scientists making DNA to match each possible sequence of insulin mRNA. What was the next step of this process? A.

Which of these modes of transmission require a bodily opening either natural or artificial?

Which factor is a characteristic of an acid? A. Non-corrosive B. Soapy C. Sour D. Slippery

How are unique daughter cells created in meiosis? A. Homologous pairing B. Crossing over C. Mutation during reduction Division D. Zygote fertilization