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EEOB 2520 Midterm Study questions with 100% Correct Answers
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EEOB 2520 Midterm Studyquestions with 100% Correct
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Hot chocolate is essentially hot water with various compounds added to it. During
your term studying abroad at the University of Antarctica, you develop your own,
special salty-n-sweet hot chocolate. To 0.25 L of hot water, you add 40 mol cocoa, 10
mol glucose, and 5 mol salt. What is the osmolarity? - ANSWER 240 osm
The plasma membrane and fibronectin both have the common function that they
both allow for a cell to - ANSWER connect to something else
Substrate-level phosphorylation is the ATP generation method for - ANSWER glycolysis
and Krebs cycle
Without available oxygen, a product of glycolysis will be _______ and the electron
transport chain will stop _______ Krebs cycle - ANSWER lactate,
before
In the cellular metabolic pathway, glycolysis and Krebs cycle make ATP via _______
method and do so in ______ locations within the cell. - ANSWER the same,
different
Collagen is to _____ as fibronectin is to ______ - ANSWER rope,
connections
, What are correct statements about the plasma membrane? - ANSWER it is a
discriminating barrier that connects the cell to the extracellular matrix, it is formed
spontaneously due to hydrophobic interactions, its phospholipids have a
lipophobic head and two hydrophobic tails and it does not contain about equal
numbers of phospholipids and proteins
Pairs of interactions that are likely with the plasma membrane are - ANSWER integral
proteins - tails of phospholipids, peripheral proteins - intracellular fluid, glycocalyx -
integral proteins, and extracellular fluid - glycocalyx
Unfortunately, Brutus has been caught by the latest bug that has been circulating
around campus. He has a fever and is achy. He asked you to get him a cup of tea that
is high in antioxidants so he can feel better. Instead, you bring him a cup of soup. You
correctly tell him that - ANSWER his immune system is producing oxidants so the tea
would be counterproductive and he should also avoid taking vitamins A and D until he
starts to feel better
Carmen must work with others on her curling team. However, Sam and Josh hate each
other and refuse to even be on the same end of the ice together. Fortunately, Carmen
gets along with both of them so she can be on either end of the ice. What are correct
statements about this situation as an analogy to polarities? - ANSWER Carmen is
amphipathic and Sam is
hydrophobic while Josh is polar
What are correct statements about the plasma membrane? - ANSWER Correct
statements about the plasma membrane are that it is a selective barrier that blocks
small, polar compounds and
it contains about equal amounts of phospholipids and cholesterol
What are correct statements about diffusion? - ANSWER Correct statements about
diffusion are that it occurs with water but in that case is called osmosis, its rate will
increase if the surface area between the two areas increases, and a cell placed in a
hypertonic solution will see a decrease in the cell's size
What are correct statements about the extracellular matrix? - ANSWER Correct
statements about the extracellular matrix are that, when separated from the matrix,
an epithelial cell will likely
not survive and the matrix proteins are produced by connective cells called fibroblasts
Under a microscope in histology lab, you observe a layer of tissue held together by a single
type of junction that allows the movement of compounds from one side of the layer to the
other side. However, you do not observe any movement of compounds from the cytosol of
one cell to another in this tissue. Therefore, you correctly report to your instructor that this
tissue is held together by ____ and the moving compounds are in the
____ fluid compartment. - ANSWER cadherins in desmosomes,
interstitial or middle-sized
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