Exam 1: The Cell: A Microcosm of Life

In which organelle do the TCA cycle and fatty acid oxidation occur?

Transcription-level control mechanisms ____.

Choose three of the following terms and in one sentence per term,provide a concise definition of that term: nucleus,mitochondria,RER,transcription,translation,apoptosis,and cell replication.

The plasma membrane is a sheet-like structure composed solely of lipids.

Why is cholesterol important in plasma membrane function?

Destruction of which organelle(s)would cause the cell to cease to function due to a total loss of energy?

Proteins attached to the membrane through hydrophobic interactions and embedded in the membrane are called ____.

Molecular stimuli that bind specifically to receptors are known as ____.

Different cells express different proteins because they contain different sequences of DNA in the nucleus.

Peripheral proteins are involved in cell-cell recognition,whereas integral proteins function primarily as receptors/transporters.

The lipid bilayer determines the function of the plasma membrane,while the proteins are primarily responsible for the structure of the membrane.

DNA in the nucleus is wrapped around ____.

The nuclear envelope is a single membrane structure that helps to isolate the nucleus from the rest of the cell.

A researcher in the field of nutritional genomics is least likely to study ____.

Signals generated at one part of a cell are transmitted quickly to other parts of the cell due to the interconnection of the cytosol and ____.

Describe the important implications of the high Km for glucokinase in terms of maintaining normal blood glucose after a meal and during fasting.

The smooth endoplasmic reticulum (SER)is associated with ____.

The organelle that detoxifies by oxidizing molecules such as hydrogen peroxide and ethanol is the ____.

Diagnostic enzymology focuses on ____.

Describe the uphill-downhill concept.