Bioscience Chapter 5

Terms in this set (24)

Cells functions:

they can survive on their own, can carry out metabolic reactions, can sense and respond to changes in environment, have inherited DNA, can reproduce

All organisms are composed of one or more cells, is the basic unit of life, and new cells arise only from cells that already exist

All cells are surrounded by a:

plasma membrane

The semifluid substance within the membrane is the:

All cells contain:

chromosomes which have genes in the form of DNA and ribosomes

Big difference between prokaryotic and eukaryotic cells is the:

location of chromosomes

In a eukaryotic cell the chromosomes are contained in:

membrane-enclosed nucleus

In a prokaryotic cell the DNA is concentrated in:

the nucleoid without a membrane

The region between the nucleus and the plasma membrane is:

Eukaryotic cells are ___ than prokaryotic cells:

Cells have a small size to:

provide more surface are for more membrane

As a cell increases in size its volume:

increases faster than its surface area

Plasma membrane:

functions as a selective barrier that allows passage of oxygen, nutrients, and wastes for the whole volume of the cell

contains most of the genes in a eukaryotic cell

The nucleus is separated by:

a double membrane and where they are fused a pore allows large macromolecules to pass through

In the nucleus the DNA and associated proteins are organized into:

When a cell prepares to divide the chromatin fibers coil up to be seen as separate structures:

dense region in the nucleus where ribosomal RNA is synthesized to form ribosomal units

The nucleus directs protein synthesis by symthesizing:

many of the internal membranes in a eukaryotic cell are part of the:

endomembrane system

These membranes are either in direct contact with each other or are connected via transer of:

receiving side of Golgi apparatus

shopping side of Golgi apparatus

inner levels of Golgi apparatus

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