The Cell MCQ (Lab)

When a cell is NOT dividing, the DNA is loosely spread throughout the nucleus in a threadlike form called __________.

cytosol

chromatin

ribosomes

chromosomes

chromatin

DNA replication occurs during __________.

metaphase

prophase

cytokinesis

interphase

interphase

________ are tiny finger like projections on some cell surfaces that increase the surface area for absorption of materials.

Cilia

Microtubules

Flagella

Microvilli

Microvilli

These small bodies are found inside the nucleus of the cell. Made of proteins and RNA, these structures assemble ribosomes. They are ________.

nuclear poroses

nuclear envelopes

nucleos

nucleoli

nucleoli

Which of the following is not considered to be a cytoskeletal element?

intermediate filaments

microtubules

microfilaments

centrioles

centrioles

________ molecules form the major component of the plasma membrane and are arranged in the form of a bilayer.

protein

phospholipid

sugar (carbohydrates)

cholesterol

phospholipid

What is the function of nuclear pores?

to act as attachment points for spindle fibers during cell division

to allow large molecules, with the exception of DNA, to pass through the envelope

they are enzymes for the replication of DNA

to act as an assembly point for ribosomes

to allow large molecules, with the exception of DNA, to pass through the envelope

This organelle is particularly important during cell division. It directs the formation of the mitotic spindle.

centriole

endoplasmic reticulum

microtubule

mitochondrion

centriole

________ are membranous sacs that detoxify harmful chemicals.

Peroxisomes

Lysosomes

Golgi apparatus

Rough endoplasmic reticulum

Peroxisomes

This organelle digests other worn-out organelles and foreign substances that have entered the cell (CELL DESTRUCTION)

peroxisome

lysosome

endoplasmic reticulum

Golgi apparatus

lysosome

This organelle stores and transports proteins, and synthesizes phospholipids and cholesterol.

centriole

endoplasmic reticulum

mitochondrion

microtubule

endoplasmic reticulum

This membranous organelle resembles a stack of flattened sacs with bulbous ends and associated vesicles.

rough endoplasmic reticulum

Golgi apparatus

smooth endoplasmic reticulum

lysosomes

Golgi apparatus

Ribosomes/ribosomal subunits are found ________.

free in the cytoplasm

inside lysosomes

attached to the Golgi apparatus

associated with coiled DNA of chromosomes

free in the cytoplasm

The small size and biconcave shape of this cell gives it flexibility and allows its easy passage through small channels. It is a ________.

sperm cell

red blood cell

simple squamous epithelial cell

smooth muscle cell

red blood cell

Plasma cells are key to the immune response because they secrete antibodies. Given that antibodies are made of protein, which membrane-enclosed cell organelle would you expect the plasma cells to have in abundance?

Lysosomes

Mitochondria

Smooth endoplasmic reticulum

Rough endoplasmic reticulum

rough endoplasmic reticulum