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ASU Bio 181 Exam 1- Practice questions and Answers
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ASU Bio 181 Exam 1- Practice questions andAnswers
The paramecium discussed in class contained an organelle called the
contractile vacuole. This is the presumed precursor of the: - -kidney
-A cell that is anchorage-dependent for growth will also exhibit contact
inhibition. - -true
-In your own multicellular body, cells with different functions have different
DNA. - -false, their DNA is identical but different gene expression
-The contractile vacuole of the paramecium is possibly an evolutionary
precursor of the kidney. - -true
-The paramecium swims by way of using a flagella. - -false, they use cilia
-In order to examine cells which are smaller than can be detected by the
human senses what needs to be used? - -tehcnology
-Compared to bacteria which of the cell types below are not responsible for
finding food - -Lymphocyte
Macrophage
Fibroblast
-A cancer cell will be anchorage-dependent for growth and immortal. - -
false, a cancer cell is anchorage-independent for growth and immortal
-A normal cell is anchorage-dependent for growth and mortal. - -true
-A cell that is itself an organism must have a minimum of four needs
presented in lecture. List these four things. - -a cell needs to find food,
shelter, reproduce, and mate. Also be able to escape predators.
-In your own multicellular body, different cells in your body have a division
of labor between them - -true
-What limits the paramecium from acquiring more complex functions? - -the
number of biomolecular machines it can contain within itself
-Write a few sentences that explain what limits an individual cell from
becoming more complex. - -It has a limited number of biomolecular
machines that a cell can contain and limits it from being more complex. It
has to do everything for itself. Also has a certain number of parts with which
to change its engineering, thereby changing its function.
, -In Cell Biology what can limit the progress of science? - -technology
-A single-celled eukaryotic organism: - -Has a limited number of
biomolecular machines.
Must find food, shelter, a mate and reproduce
Escape from predators
-Comparing a single-celled eukaryotic organism with a multicellular
organism such as yourself identify the major difference from the list below. -
-Division of labor
-We are made up of ....% water - -50-70%
-Explain how the vesicles are carried from the Golgi apparatus to the plasma
membrane. - -Proteins are synthesized by ribosomes and enter the rER
(rough endoplasmic reticulum) . Vesicles bud off from the rER and carry
proteins to the Golgi.
The Golgi modifies proteins, and then the vesicles bud off from the Golgi and
carry modified proteins to the plasma membrane.
-The plasma membrane gets new lipids from: - -None of the above.
-The ER is contiguous with the Golgi apparatus. - -false
-Explain the evolutionary origin of mitochondria. - -It is thought that a
primitive proto-eukaryote engulfed a primitive proto-prokaryote good at
making ATP and this organism lived inside this larger cell and began making
ATP for the cell (endosymbiosis theory)
-What is the difference between a triglyceride and a phospholipid? - -
Triglyceride has 3 fatty acids attached to a glycerol backbone and a
phospholipid has two fatty acids plus a phosphate group attached to a
glycerol backbone. One of the carbons from glycerol covalent links to the
head group.
-Amino acids can be largely subdivided into two groups. What are the two
groups? - -polar/hydrophilic and nonpolar/hydrophobic
-Facilitated diffusion uses a channel protein to let components move down
their concentration gradient. - -true
-If something is soluble in water a of hydration forms around it and it is
termed ... - -hydrophillic
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