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Bio Review Questions: openstax textbook
Terms in this set (31)
Which statement is false?
A. Tissues exist within organs which exist within organ systems.
B. Communities exist within populations which exist within ecosystems.
C. Organelles exist within cells which exist within tissues.
D. Communities exist within ecosystems which exist in the biosphere.
B: communities exist within populations which exist within ecosystems
The smallest unit of biological structure that meets the functional requirements of "living" is the ________.
Which of the following sequences represents the hierarchy of biological organization from the most complex to the least complex level?
a. organelle, tissue, biosphere, ecosystem, population
b. organ, organism, tissue, organelle, molecule
c. organism, community, biosphere, molecule,
biosphere, ecosystem, community, population, organism
D: biosphere, ecosystem, community, population, organism
A suggested and testable explanation for an event is called a ________.
The type of logical thinking that uses related observations to arrive at a general conclusion is called ________.
How many neutrons do (K) potassium-39 and potassium-40 have, respectively?
Potassium-39 has twenty neutrons and Potassium-40 has twenty one neutrons.
Magnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom?
A. It has 12 protons, 12 electrons, and 12 neutrons.
B. It has 12 protons, 12 electrons, and six neutrons.
C. It has six protons, six electrons, and no neutrons.
D. It has six protons, six electrons, and six neutrons.
A: it has 12 protons, 12 electrons, and 12 neutrons
Which type of bond represents a weak chemical bond?
An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?
Which of the following statements is not true?
A. Water is polar.
B. Water stabilizes temperature.
C. Water is essential for life.
D. Water is the most abundant atom in Earth's atmosphere.
D: water is the most abundant atom in Earth's atmosphere
Using a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution?
The pH of lemon juice is about 2.0, whereas tomato juice's pH is about 4.0. Approximately how much of an increase in hydrogen ion concentration is there between tomato juice and lemon juice?
An example of a monosaccharide is ________.
fructose, glucose, galactose
Cellulose and starch are examples of ________.
Phospholipids are important components of __________.
the plasma membrane of cells
The monomers that make up proteins are called _________.
Why are hydrogen bonds and van der Waals interactions necessary for cells?
HydrogenbondsandvanderWaalsinteractionsformweak associations between different molecules. They provide the structure and shape necessary for proteins and DNA within cells so that they function properly. Hydrogen bonds also give water its unique properties, which are necessary for life.
What structures does a plant cell have that an animal cell does not have? What structures does an animal cell have that a plant cell does not have?
Plant cells have plasmodesmata, a cell wall, a large central vacuole, chloroplasts, and plastids. Animalcellshavelysosomesandcentrosomes.
Why does the cis face of the Golgi not face the plasma membrane?
because that face receives chemicals from the ER, which is the center of the cell.
A doctor injects a patient with what he thinks is isotonic saline solution. The patient dies, and autopsy reveals that many red blood cells have been destroyed. Do you think the solution the doctor injected was really isotonic?
No, it must have been hypotonic, as a hypotonic solutionwouldcausewatertoenterthecells,therebymakingthemburst.
When viewing a specimen through a light microscope, scientists use _________ to distinguish the individual components of cells.
The ___________ is the basic unit of life.
What do all prokaryotes and eukaryotes share?
A typical prokaryotic cell __________________ compared to a eukaryotic cell.
is smaller in size by a factor of 100
Which of the following is found both in eukaryotic and prokaryotic cells?
Which of the following is not a component of the endomembrane system?
Which plasma membrane component can be either found on its surface or embedded in the membrane structure?
The tails of the phospholipids of the plasma membrane are composed of _____ and are _______?
fatty acid groups; hydrophobic
Water moves via osmosis _________.
high to low concentration
Active transport must function continuously because __________.
diffusion is constantly moving the solutes in the
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