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LSUE Biology 1001 midterm - j.fontenot, Biology 1001 Midterm – Fontenot Questions With Complete Solutions

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LSUE Biology 1001 midterm - not, Biology 1001 Midterm – Fontenot Questions With Complete Solutions

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LSUE Biology 1001 midterm - j.fontenot, Biology 1001
Midterm – Fontenot Questions With Complete Solutions

"If all vertebrates have backbones, and turtles are vertebrates,
then turtles have backbones." This statement is an example of:
Correct Answer Deductive reasoning

A basal body is a. composed of nine microtubule triplets
surrounding a central pair of microtubules.
b. similar in structure to centrioles.
c. composed of nine microtubule doublets surrounding a central
pair of microtubules.
d. identical in structure to cilia.
e. None of the choices. Correct Answer similar in structure to
centrioles.

A child dies following a series of chronic bacterial infections. At
the autopsy, the physicians are startled to see that the child's
white blood cells are loaded with vacuoles containing intact
bacteria. Which of the following explanations could account for
this finding? Correct Answer A defect in the lysosomes of the
white blood cells prevented the cells from destroying engulfed
bacteria

A culture of bacteria growing aerobically is fed glucose
containing radioactive carbon and is then examined. During the
citric acid cycle, radioactivity would first appear in Correct
Answer Citrate

A drug is tested in the laboratory and is found to create holes in
both mitochondrial membranes. Scientists suspect that the drug

,will be harmful to human cells because it will inhibit a. the citric
acid cycle.
b. oxidative phosphorylation.
c. glycolysis.
d. the citric acid cycle and oxidative phosphorylation. Correct
Answer The citric acid cycle and oxidative phosphorylation

A hydroxyl group is a. also called a carbonyl group.
b. characteristic of proteins.
c. characteristic of alcohols.
d. basic. Correct Answer Characteristic of alcohols

A hypothesis is... a. the same as a theory.
b. a proposed explanation for a set of observations.
c. an explanatory idea that is broad in scope and supported by a
large body of evidence.
d. a widely accepted idea about a phenomenon.
e. All of the choices are correct. Correct Answer A proposed
explanation for a set of observations

A major function of glycoproteins and glycolipids in the cell
membrane is to Correct Answer Allow the cells of an embryo
to sort themselves into tissues and organs

A molecule with the formula C55H110O55 is probably a. a. oil.
b. steroid.
c. protein.
d. polysaccharide. Correct Answer Polysaccharide

,A mutant protist is found in which some mitochondria lack an
inner mitochondrial membrane. Which of the following
pathways would be completely disrupted in these mitochondria?

a. oxidative phosphorylation
b. alcoholic fermentation
c. glycolysis
d. biosynthesis Correct Answer oxidative phosphorylation

A pH of 1 compared to a pH of 3 is: Correct Answer 100 times
more acidic

A pharmaceutical company hires a chemist to analyze the purity
of the water being used in its drug preparations. If the water is
pure, the chemist would expect to find Correct Answer H2O
molecules, H+ ions, and OH- ions

A redox reaction involves the transfer of Correct Answer An
electron

A scanning electron microscope is used to study ____, whereas
a transmission electron microscope is used to study _____.
Correct Answer Cell surfaces . . . Internal cell structures

A scientist suspects that the food in an ecosystem may have
been contaminated with radioactive nitrogen over a period of
months. Which of the following substances could be examined
for radioactivity to test the hypothesis? Correct Answer The
hair produced by humans living in the ecosystem

A solution with a pH of 7 is

, a. strongly acidic.
b. weakly acidic.
c. neutral.
d. weakly basic. Correct Answer neutral

A steer must eat at least 100 pounds of grain to gain less than 10
pounds of muscle tissue. This illustrates Correct Answer The
second law of thermodynamics

A theory is a. an idea that has been proven.
b. a concept in the early stages that still needs to be tested.
c. a description of a belief that invokes the supernatural.
d. an explanation of an idea that is broad in scope and supported
by a large body of evidence.
e. All of the choices are correct. Correct Answer an explanation
of an idea that is broad in scope and supported by a large body
of evidence

A tree in your yard is home to 2 cardinals, a colony of ants, a
wasp nest, and millions of bacteria. All these represent: Correct
Answer A community

A woman is having trouble becoming pregnant. Examination of
her partner's sperm indicates that dynein feet are missing from
the flagella in his sperm cells. A physician explains that this
could interfere with fertility by Correct Answer Preventing the
sperm from swimming to the egg cell

After glycolysis but before the citric acid cycle Correct Answer
Pyruvate is oxidized

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