Ch. 4 Openstax Biology Cell Structure

A microscope in which visible light is passed through the specimen and then through glass lenses, which bend the light in such a way that the image of the specimen is magnified

the membrane-enclosed structures within eukaryotic cells

A microscope that focuses a beam of electrons through a specimen or onto its surface

A cell in which the DNA is in an organelle called the nucleus, which is bounded by a double membrane

A cell in which the DNA is concentrated in the nucleoid, a region that is not bounded by a membrane

The contents of the cell enclosed by the plasma membrane; in eukaryotes, the portion exclusive of the nucleus

The boundary of every cell, which functions s a selective barrier that allows the passage of enough oxygen, nutrients, and wastes to service the entire cell

The organelle that contains most of the genes in the eukaryotic cell

The membrane that encloses the nucleus, separating its contents from the cytoplasm

structures that carry the genetic information

the complex of DNA and its associated proteins

a prominent structure within the nondividing nucleus; the place where ribosomal RNA (rRNA) is synthesized from instructions in the DNA

Complexes made of ribosomal RNA and protein; the cellular components that carry out protein synthesis

The collection of membranes inside and surrounding a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles; includes the plasma membrane, the nuclear envelope, the smooth and rough endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, and vacuoles

sacs made of plasma membrane, which help transport substances around the cell