BIO 1100 Exam 1 (Ch 1-5) Questions with C orrect Answers
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Course
BIO 1100 1
Institution
BIO 1100 1
BIO 1100 Exam 1 (Ch 1-5)
The process by which white blood cells engulf bacteria is termed - Answer-phagocytosis
What structure is the membrane causes plasma membranes to resist freezing? - Answer-unsaturated fatty acid tails
T/F: Every atom of the same element has an equal number of proton...
BIO 1100 Exam 1 (Ch 1-5)
The process by which white blood cells engulf bacteria is termed - Answer-
phagocytosis
What structure is the membrane causes plasma membranes to resist freezing? -
Answer-unsaturated fatty acid tails
T/F: Every atom of the same element has an equal number of protons and electrons
- Answer-true
Which of these biological molecules contain genetic information? - Answer-nucleic
acids
The formation of ions involves the - Answer-gain or loss of electrons
What prevents your immune system from attacking your own cells? - Answer-
recognition proteins
HDL and LDL are different types of cholesterol found in the blood. These compounds
are - Answer-lipids
Imagine you have a mysterious liquid from a sample of food. You add the liquid to a
beaker of water and shake vigorously. After a few minutes, the water and the other
liquid separate into 2 layers. To which class of biological molecules does the
unknown liquid most likely belong? - Answer-lipids
After you drink a glass of acidic lemonade, your body's pH does not change. This is
an example of how humans and other organisms - Answer-maintain precise internal
conditions through homeostasis
A particular cell has the following molecules and structures: enzymes, DNA,
ribosomes, plasma membrane, and mitochondria. It could be a(n) __________ cell. -
Answer-plant or animal
Cell membranes do all of the following EXCEPT
A) provide attachments between cells
B) allow communication between cells
C) regulate the movement of substances between the cytoplasm of the cell and the
extracellular fluid
D) provide an energy source for the cell
E) isolate the cell's contents from the external environment - Answer-D) provide an
energy source for the cell
The slowest rate of diffusion of dye particles in water will occur at - Answer-10 C
The urinary bladder is protected from leaking by cell-to-cell junctions called -
Answer-tight junctions
, Which of the following provides evidence that mitochondria and chloroplasts were
once free-living prokaryotic organisms? - Answer-they contain their own DNA,
independent of the nucleus
Suppose you are testing a treatment for AIDS patients and find that 75% respond
well, whereas 25% show no improvement or a decline in health. You should -
Answer-review the results, modify the drug or dosage, and repeat the experiment
You observe a plant on your window sill that is growing at an angle toward the
outside. This is an example of a living thing - Answer-responding to stimuli
The chemical bonding properties of an element are determined by - Answer-the
number of electrons in its outermost energy shell
A denatured protein differs from a normal protein because it - Answer-has lost its
usual secondary and tertiary structures
Which of the following reactions is an example of dehydration synthesis? - Answer-
Glucose + Galactose = lactose
To say that a cell is "selectively permeable" means - Answer-only certain molecules
can pass through
What is meant by the statement that water has a high specific heat? - Answer-it can
absorb a lot of energy without changing temperature
A scientific explanation that is conditional and requires more investigation is called
a(n) - Answer-hypothesis
Which of the following relationships is FALSE?
A) Cell wall - support and protection
B) Nucleus - genetic information
C) Mitochondria - formation of ATP
D) Chloroplasts - chief sight of lipid synthesis
E) Ribosomes - site of protein synthesis - Answer-D) Chloroplasts - chief sight of
lipid synthesis
Which of the following is a characteristic of all living organisms? - Answer-
maintenance and regulation of internal conditions
Polar molecules - Answer-have an unequal distribution of electric charge
Carbon dioxide crosses the plasma membrane by simple diffusion. The rate at which
carbon dioxide enters the cell is determined by the - Answer-concentration of carbon
dioxide of each side of the cell membrane
What property of phospholipids makes them important in cell membranes? - Answer-
they have a polar end and a nonpolar end
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