Bio Level 2 mid term prep

Which of the following represents the phases of mitosis in their proper sequence?

• prophase, anaphase, metaphase, telophase

• prophase, metaphase, anaphase, telophase

• interphase, prophase, metaphase, telophase

• interphase, prophase, metaphase, anaphase, telophase

The brain, lungs, testes, and small intestine are each examples of

• an organ system.

• an organ.

• a nerve.

• a tissue.

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?

• DNA contains sulfur and little phosphorous.

• DNA contains phosphorus and no sulfur.

• Proteins contain phosphorus and no sulfur.

One advantage to being an ectotherm is that it

• needs less energy to maintain homeostasis.

• can generate its own body heat.

• can reduce its body heat by sweating.

• can survive easily in colder climates.

Which molecules are involved in protein synthesis?

• messenger RNA, ribosomal RNA, and transfer RNA

• messenger RNA, introns, and ribosomal RNA

• transfer RNA, introns, and mutagens

• ribosomal RNA, transfer RNA, and mutagens

During early development, all cells in the embryo of a multicellular organism are identical. Later on in development, the cells will become specialized through a process called

• differentiation.

• interphase.

• cytokinesis

• apoptosis.

An animal cell (Salty inside) that is surrounded by fresh water will burst because the osmotic pressure causes

• water to move into the cell.

• solutes to move into the cell.

• solutes to move out of the cell.

• water to move out of the cell.

In the kidneys, both useful substances and wastes are removed from the blood by

• dialysis.

• filtration.

• excretion

• reabsorption.

Which of the following is NOT a principle of the cell theory?

• All living things are made of cells.

• Cells are the basic units of life.

• Very few cells are able to reproduce.

• All cells are produced from existing cells.

Griffith called the process he observed transformation because

• the harmful bacteria had been transformed.

• the harmless bacteria had been transformed.

• the mouse had been transformed.