2nd Semester Biology Final Exam

What do eukaryotic cells have that prokaryotic cells lack?

• genetic information

• membrane–bound organelles

• a plasma membrane

• cytoplasm

Use the diagram to answer the question(s).

What type of cell is shown in the diagram of the cell?

• animal

• plant

• prokaryotic

• bacteria

The diagram above shows the phospholipid bilayer membrane common in cells. The substances labeled "A" are able to pass through the membrane, while other substances are not. This is because the membrane is __________.

• semi–permeable

• made of protein

• double–layered

• polar

The process in which substances enter the cell without the use of energy is called________.

• passive transport

• active transport

• exocytosis

• endocytosis

The __________ are the site(s) of photosynthesis in eukaryotic cells

• mitochondria

• ribosomes

• nuclei

• chloroplasts

Which of the following requires a host cell in order to reproduce?

• eukaryote

• virus

• monera

• prokaryote

A person with an immune system compromised by a virus is unable to fight off infections because __________.

• cells are not able to stop multiplying

• cells stop producing antigens

• killer T–cells destroy healthy body cells

• helper T–cells are being destroyed by the virus

The lytic cycle and lysogenic cycle are the two major modes of replication in _______.

• bacteria

• viruses

• DNA

• antibodies

Which of the following describes why an exact copy of DNA is replicated each time a cell divides?

• Each strand of DNA makes an exact copy of itself.

• Each strand of DNA makes a complementary copy of itself.

• DNA is transcribed into RNA strand before cell division.

• DNA's double helix is resistant to errors.

The graphic shows the processes involved in the cell cycle.

The cell cycle is necessary in order for new cells to replace damaged or dead cells. In which part of the cycle are new cells formed?

• Growth

• DNA Synthesis

• Preparation for Division

• Mitosis