M2 The Cell

Question 1

Studded with ribosomes for protein synthesis (Membrane-bound organelles)

Answer 1

Rough Endoplasmic Reticulum

Question 2

Responsible for modification and packaging of proteins

Answer 2

Golgi complex

Question 3

This Vesicle contains enzymes that can break down / digest cell.

Answer 3

Lysosome

Question 4

A molecular biologist was examining the DNA of a prokaryotic specimen. In his investigation, what would most likely be absent?

A. Information to produce histones
B. Information for binary fission
C. Information to repair the cell wall
D. Information to synthesize new ribosomes

Answer 4

A. Information to produce histones

Prokaryotic organisms do not have their genetic material wrapped around thr histones. Thus, their DNA lacks the information to produce such proteins.

Question 5

The tests are known to produce and secrete testosterone, a steroid-based hormone, fo the development of male secondary characteristics. What organelle is expected to be numerous and active in the testosterone-producing cells of the testicles?

A. Peroxisome
B. Lysosome
C. Mitochondria
D. Golgi complex

Answer 5

D. Golgi complex

Since SER is responsible for steroid synthesis and Golgi comples is for modification and packaging, both are expected to be numerous and active in testosterone-producing cells.

Because there is no SER among the choices, the Golgi complex is the best answer (tho not producing testosterone)

Question 6

Professor Geller was examining a cell of unknown origin. He observed the presence of: several vacuoles, mitochondria, nucleus, and lysosomes. Which of the following is true about its source?

A. The source is a plant.
B. The source is an animal
C. The source is prokaryotic
D. None of the above

Answer 6

B. The source is an animal

The presence of nucleus eliminates prokaryotes from our choices.

The presence of SEVERAL VACUOLES and LYSOSOMES indicates that the came from an ANIMAL SOURCE.

Question 7

Which is not a characteristic of an animal cell?

A. Mitochondria
B. Cell membrane
C. Cell wall
D. DNA

Answer 7

C. Cell wall

Animal cells are not known for possesing a rigid cell wall compared to plant cells.

Question 8

Movement of molecules from an area of high concentration to an area of low concentration.

Answer 8

Diffusion

Question 9

Net movement of water across a semi-permeable membrane

Answer 9

Osmosis

Question 10

The process by which cells engulf foreign matter is called:

A. Facilitated diffusion
B. Osmosis
C. Exocytosis
D. Phagocytosis

Answer 10

D. Phagocytosis

Phagocytosis = “process by which cells eat other cells or foreign matter.