BIO1000L Midterm Practice Exam

Based on standard nomenclature rules, what is the correct way to type the following organism name?

Roseicyclus mahoneyensis

A research group studying the Red River is looking at interactions between all of the organisms in the river and the abiotic (non-living) components that make up the river. What level of hierarchy are they studying?

Ecosystem

What is the correct order of classification, from largest to smallest, when describing a species?

Domain, kingdom, phylum, class, order, family, genus, species

A research group has developed a new antibiotic to treat infections in the human bloodstream. They are doing a clinical study to determine what dose is required to eliminate the infection. Patients 1-100 received no antibiotic. Patients 101-200 received 10mg of the antibiotic. Patients 201-300 received 100mg of the antibiotic. Patients 301-400 received 1000mg of the antibiotic. The research group is collecting blood samples from each patient to determine the number of bacteria remaining after the treatment. This clinical study is:

An experimental study

A research group has developed a new antibiotic to treat infections in the human bloodstream. They are doing a clinical study to determine what dose is required to eliminate the infection. Patients 1-100 received no antibiotic. Patients 101-200 received 10mg of the antibiotic. Patients 201-300 received 100mg of the antibiotic. Patients 301-400 received 1000mg of the antibiotic. The research group is collecting blood samples from each patient to determine the number of bacteria remaining after the treatment. What are the independent and dependent variables?

The independent variable is the dose of antibiotic, the dependent variable is the number of bacteria remaining in the blood stream

A research group has developed a new antibiotic to treat infections in the human bloodstream. They are doing a clinical study to determine what dose is required to eliminate the infection. Patients 1-100 received no antibiotic. Patients 101-200 received 10mg of the antibiotic. Patients 201-300 received 100mg of the antibiotic. Patients 301-400 received 1000mg of the antibiotic. The research group is collecting blood samples from each patient to determine the number of bacteria remaining after the treatment. What group of people are the placebo group?

Patients 1-100

A research group has developed a new antibiotic to treat infections in the human bloodstream. They are doing a clinical study to determine what dose is required to eliminate the infection. Patients 1-100 received no antibiotic. Patients 101-200 received 10mg of the antibiotic. Patients 201-300 received 100mg of the antibiotic. Patients 301-400 received 1000mg of the antibiotic. The research group is collecting blood samples from each patient to determine the number of bacteria remaining after the treatment. The data being collected is:

Quantitative

A research group has developed a new antibiotic to treat infections in the human bloodstream. They are doing a clinical study to determine what dose is required to eliminate the infection. Patients 1-100 received no antibiotic. Patients 101-200 received 10mg of the antibiotic. Patients 201-300 received 100mg of the antibiotic. Patients 301-400 received 1000mg of the antibiotic. The research group is collecting blood samples from each patient to determine the number of bacteria remaining after the treatment. How can the scientists arrange things to make sure that this is a double-blind study?

The scientist behind the scenes will know what the patient is being given but will make sure neither the doctor or the patient knows

True or false: An ecosystem gains energy in the form of light and loses energy in the form of heat

True

True or false: When carrying out an experiment using the scientific method, your results will always prove your hypothesis to be either true or false

False

A hypothetical atom has 7 protons, 7 electrons, and 9 neutrons

What is the atomic number of the atom?

7

A hypothetical atom has 7 protons, 7 electrons, and 9 neutrons

What is the atomic mass of the atom?

16 Da

A hypothetical atom has 7 protons, 7 electrons, and 9 neutrons

How many valence electrons does the atom have?

5

A hypothetical atom has 7 protons, 7 electrons, and 9 neutrons

What is the bonding capacity of the atom?

3

True or false: The following is a balanced equation?

6CO2 + 3H2O → 3C6H12O6 + 6O2

False

If a solution at pH 6 contains 100 H+ ions, how many ions will be in a solution at pH 3?

100,000

Why does water have very high surface tension?

Molecules are held together by hydrogen bonds

Which of the following is not one of the ‘Big Six’?

Potassium

Choose the correct statement regarding fatty acids

1. Saturated fatty acids contain the maximum number of hydrogen bonds

2. Unsaturated fatty acids have one or more double bonds between carbon atoms

3. Saturated fatty acids will be solid at room temperature and unsaturated fatty acids will be liquid at room temperature

4. All statements are true

All statements are true

Which of the following food would be a source of glycogen macromolecules in your diet?

Steak

Which of the following organelles is found in prokaryotes but not in eukaryotes?

Nucleoid

Which of the following organelles is not a member of the endomembrane system?

Ribosomes

rRNA is constructed in the:

Nucleolus

What type of solution is required for plant cells to be at their healthiest?

Hypotonic solution

Which of the following transport proteins is not used for facilitated diffusion?

Sodium-potassium pump

A molecule that prevents an enzyme from functioning by binding to a site on the enzyme outside of the active site is an example of:

Non-competitive inhibition

True or false: Flagella are found on eukaryotic cells but not on prokaryotic cells

False

If I want to look at the structure of a ribosome under the microscope, what microscope should I use?

Transmission electron microscope (TEM)

What stage of cellular respiration produces the majority of the ATP?

Oxidative phosphorylation

What is the net output of glycolysis per molecule of glucose?

2 ATP, 2 NADH, 2 pyruvate

What statement regarding electron transport chains is false?

In cellular respiration the electron transport chain is part of the citric acid cycle

True or false: Respiration and cellular respiration are synonyms

False

In cellular respiration what reactant is being oxidized?

Glucose

What is the final electron acceptor in the cellular respiration electron transport chain?

Oxygen

What coenzymes are used to shuttle electrons during cellular respiration?

NAD+/NADH and FADH/FADH2

What types of plants have decreased yield based on photorespiration?

C3 plants

Which of the following cell structures is present in both plant and animal cells?

Microtubules