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BIO 141 Exam 1 Review (Drexel University) (3)
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BIO 141 Exam 1 Review (Drexel University)Another name for the polymer of carbohydrates - ANS-Polysaccharides
Which of the following is not made from long chain of glucose? - ANS-Glycerol
Which polysaccharides consists of many long chains of glucose? - ANS-Cellulose
Lipids are all - ANS-Hydrophobic
Which combination describes the plasma membrane? - ANS-Hydrophobic Interior, Hydrophilic
exterior
What is the basic structure of most lipids? - ANS-A glycerol head and up to three fatty acid tails
Which would have the highest concentration of C-H bonds? - ANS-Saturated Fats
What gives an amino acid its unique chemical properties? - ANS-The side group
To a large extent, a protein's function is dependent upon its shape. What determines a protein's
shape? - ANS-The sequence of amino acids
Which of the following is not a typical function of proteins? - ANS-Energy Storage
What might lead to a protein that does not functions properly? - ANS-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? - ANS-Regulates transport of substance between
the nucleus and the cytoplasm
Which organelle functions to break down and recycle large molecules? - ANS-Lysosome
Select the cellular structure that can be found in both plant and animal cells? -
ANS-Mitochondria
Which structure selectively regulates the transport of substances into and out of a plant cell -
ANS-The Plasma Membrane
Which type of cell, if any, does not have a plasma membrane? - ANS-All cell (animal, plant, and
bacteria have plasma membrane)
, How many layers of phospholipids make up the plasma membrane? - ANS-2
The passive transport of water is specifically called? - ANS-Osmosis
Movement down a concentration gradient means that the substance is moving? - ANS-From an
area of higher concentration to an area of lower concentration
What is the definition of endocytosis? - ANS-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 - ANS-Vesicles
Which of the following is not located in the nucleus? - ANS-Endoplasmic Retculum
What passes through the nuclear pores? - ANS-RNA
The nucleus is a large _________. - ANS-Organelle
What is the role of smooth endoplasmic reticulum in protein production? - ANS-Has no direct
role in protein production
Refinements, storage, and packaging occurs in? - ANS-The Golgi Apparatus
What is the main source for energy for every organism on the planet? - ANS-The Sun
What is a waste product of Photosynthesis - ANS-O2
Photosynthesis occurs in which cellular organelle? - ANS-Chloroplasts
What is the role of chloroplast in animals? - ANS-None
Choose the best explanation as to why both consumers and producers perform cellular
respiration? - ANS-Although they may obtain their sugars in different ways, both consumers and
producer rely on cellular respiration to make ATP.
How does CO2 enter a plant? - ANS-Through the Stomata
How do we know green light is not absorbed by chorophyl? - ANS-Green light is the wavelength
of light that is reflected instead of absorbed by the chloroplasts.
Name the fluid-filled interior of the chloroplasts? - ANS-Stroma
Why do some leaves change color? - ANS-The chlorophyl mole breaks down and other
pigments now become more visible
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