bio unit 2 ch 4-5

What is the cell structure marked "b." on the animal cell diagram? ***********mitochondria

66-67

What is the cell structure marked "c." on the animal cell diagram? *****Golgi apparatus

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What is the cell structure marked "e." on the animal cell diagram? ******centrioles

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What is the function of the cell structure marked "b." on the plant cell diagram? ******to convert light energy into chemical molecules

66-67

Which labelled cell structure would most likely contain digestive enzymes that are needed to break down engulfed debris? ******* labelled d

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Hydrolic Heads

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How can enzymes speed up chemical reactions? ******They lower the activation energy needed for the reaction.

Enzymes lower the energy of activation by bringing reactants together in an effective way at body temperature.

Both plant and animal cells, at least some of each, have structures which join them together for communication. ******True

Plants' plasmodesmata and animal's gap junctions allow for quick communication between cells.

What is the function of the cell structure marked "a." on the animal cell diagram? *****to produce and modify new proteins Refer to Figure 04.03A and discussion about cell organelles on page 68.

Rough ER 66-67

Which cell organelle which is responsible for processing, packaging, and the secretion of proteins? ******Golgi apparatus

The Golgi apparatus receives, processes, and packages proteins and lipids, so that they may be sent to their final destination in the cell.

if an eukaryotic cell lacked the Golgi apparatus, which of the following would be true? *******it could not package proteins

The Golgi receives, processes, and packages proteins and lipids, so that they may be sent to their final destination in the cell.

If a membrane only allows certain types of substances to go through, then the membrane is said to be what kind? ******differentially permeable

The plasma membrane is differentially permeable, meaning that only certain substances can freely diffuse across the membrane and others cannot.

When an inhibitor blocks the active site of an enzyme, this is referred to as *******competitive inhibition

competitive inhibition occurs when an inhibitor and the substrate compete for the active site of an enzyme.

Which of the following states the First Law of Thermodynamics? ****Energy cannot be created or destroyed.

energy can neither be created nor destroyed, only transformed.

When chloride ions cannot cross through the plasma membrane, what disease does the patient have? ******Cystic fibrosis

systic fibrosis is due to a defect in the chloride channel protein.