Midterm I Test Prep
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Another name for the polymer of carbohydrates?
Polysaccharides
Which of the following is not made from long chains of glucose?
Glycerol
Which polysaccharides consists of many long chains of glucose?
Cellulose
Lipids are all
Hydrophobic
Which combination describes the plasma membrane?
Hydrophobic Interior, Hydrophilic exterior
What is the basic structure of most lipids?
A glycerol head and up to three fatty acid tails
Which would have the highest concentration of C-H bonds?
Saturated Fats
What gives an amino acid its unique chemical properties?
The side group
To a large extent, a protein’s function is dependent upon its shape. What determines a protein’s shape?
The sequence of amino acids
Which of the following is not a typical function of proteins ?
Energy storage
What might lead to a protein that does not functions properly?
The active site becoming distorted, blocked, incorrect folding of the amino acid chain ( All of the Above)
What is the role of the nuclear membrane?
Regulates transport of substances between the nucleus and the cytoplasm
Which organelle functions to break down and recycle large molecules?
Lysosome
Select the cellular structure that can be found in both plant and animal cells?
Mitochondria
Which structure selectively regulates the transport of substances into and out of a plant cell
The plasma membrane
Which type of cell, if any, does not have a plasma membrane?
All cell(animal, plant, and bacteria have plasma membrane
How many layers of phospholipids make up the plasma membrane
2
The passive transport of water is specifically called ?
osmosis
Movement down a concentration gradient means that the substance is moving ?
From an area of higher concentration to an area of low concentration
What is the definition of endocytosis?
Is the bulk transport of materials into the cell
Substance are often packaged into small for transport, either through the membrane or throughout the interior of the cell
Vesicles
Which of the following is not located in the nucleus ?
Endoplasmic reticulum
What passes through the nuclear pores ?
RNA
The nucleus is a large
Organelle