Exam 4: Biology of the Cell

The building blocks that form the DNA double helix are called

If the nutrient glycogen is found stored inside a cell,it is considered a(n)

To maintain a resting membrane potential,the sodium-potassium pump

The _____________ proteins are those that are not embedded in the membrane lipid bilayer but are attached loosely to its external and internal surfaces.

Which of the following is considered a required enzyme for the process of transcription

The phase of mitosis that begins as spindle fibers pull sister chromatids apart at the centromere is

The process of programmed cell death ("cell suicide")is known as __________.

Which is not considered part of the cytoplasm

If the sequence of DNA nucleotides being read is TTACTG,then transcription results in the formation of the sequence

The fluid contained in the nucleus is the _________.

Mucus is moved along the lining of the trachea by extensions from cell membranes known as

The subunits of ribosomes are exported outside the nucleus into the cytoplasm,where they are assembled into their finished product.

DNA is organized into discrete units called ____________ that provide information for the production of specific proteins.

Glycolipids are found on the

Nuclear ____________ are open passageways that penetrate fused regions of the double membrane of the nuclear envelope.

The sodium-potassium pump moves both potassium and sodium down their concentration gradients,from higher to lower concentration.The sodium-potassium pump moves both potassium and sodium up their concentration gradients,from lower to higher concentration.

The term "codon" refers to

Which is not a membrane-bound organelle

When fertilization occurs,the sperm recognizes the egg by

Over time diffusion results in the even distribution of a substance throughout an area.