Cell Organelles and Structures Practice Flashcards

A set of fill-in-the-blank flashcards covering the primary organelles and structures of a cell based on the lecture notes.

The largest organelle in the cell is the __________.

nucleus

Cells and structures that typically lack a nucleus include xylem vessels and __________ cells.

red blood

The nucleus contains __________ which carry the genetic material or genes.

chromosomes

Human cells contain __________ chromosomes.

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Genes control cell activities by determining which __________ the cell can make.

proteins

Proteins are assembled on tiny structures in the cytoplasm called __________.

ribosomes

Ribosomes are too small to be seen through a __________ microscope.

light

Chemical reactions in the cytoplasm are controlled by a group of proteins called __________.

enzymes

The boundary between the cytoplasm and the outside of the cell is the __________ membrane.

cell surface

Because some chemicals can pass through the cell membrane, it is described as __________ permeable.

partially

When a membrane actually controls the movement of some substances, it is called __________ permeable.

selectively

The organelle responsible for releasing energy through respiration is the __________.

mitochondrion

Cells that need a lot of energy, such as __________ or nerve cells, contain many mitochondria.

muscle