Biology 1409: Exam 2 (Lab) Practice Questions
What type of microscope would be most effective for studying a living cell?
Light microscope
Which of the following choices does NOT describe a function of the plasma membrane?
Synthesizing proteins
Which of the following statements regarding chloroplasts is false?
Thylakoids are pigments found within chloroplasts that give plants their green color.
In the Macarther Wilson Model, island colonization of new species is a function of the islands what from the mainland?
distance
Species of Caribbean anoles can be categorized into groups, called , according to their body characteristics and the ecological niches they occupy.
ecomorphs
With biodiversity on the larger scale, what is the term we consider it to be?
ecosystem diversity
What does the Macarthur and Wilson model predict?
equilibrium
Which of the following choices correctly describes the composition of a ribosome?
Contains RNA and proteins
Which of the following choices correctly describes the composition of the cell membrane?
Contains lipids and proteins
A single prokaryotic cell can divide several times in an hour. Most eukaryotic cells cannot divide this quickly. Which of the following statements best explains this difference?
Eukaryotic cells are more structurally complex than prokaryotic cells.
Which of the following statements is true regarding gap junctions?
Gap junctions form when connexons align in adjacent animal cells to form a channel.
Which kingdom is likely to have colonized islands first?
Plantae
Which of the following is true regarding plasmodesmata?
Plasmodesmata allow for neighboring plant cells to transport ions, water, and other substances.
What is the main function of cytoplasm in a cell?
Suspending cellular structures and providing a place for cellular functions to take place
Male anoles use their dewlaps to communicate and to attract females of their own species. What are an adaptive explanation for why the dewlap of one species is brighter and that of another species darker?
The brighter dewlap is easier to see in environments that are shady, and the darker dewlap is easier to see in environments that are darker.
A scientist observes a new organism through a microscope. Which of the following observations tells her that the organism is eukaryotic?
The organism has a membrane bound nucleus.
Which scientist played a role in developing the cell theory?
Theodor Schwann
A team of scientists is studying detailed internal structures of a newly discovered cellular organism. What type of microscopy tool should the scientists use in order to observe these structures?
Transmission electron microscope
An is a structure or function that confers a greater ability to survive and reproduce in a particular environment.
adaptation
How is the primary productivity measured?
amount of solar energy captured by producers
Which of the following is true regarding the cell theory?
cells are the basic unit of life
What is the term that theorizes that no two species can occupy the same niche at the same time in a particular locale if resources are limited?
competitive exclusion principle
Different species can independently evolve similar traits by adapting to similar environments or ecological niches in a phenomenon known as ___.
convergent evolution
Islands small populations leads to
lower genetic diversity
Lichen and moss are?
mutualistic
Does the extinction rate on an island have a positive or negative relationship with the number of species on the island?
negative
A scientist is viewing a cell under a microscope. The presence of which of the following cell structures would tell him that the cell is eukaryotic?
nucleus
Do we consider plants primary producers or consumers?
producers
Who are the primary colonizers of an ecosystem?
producers
What is the term that represents the relative amount of plants necessary for the prey to survive and reproduce?
relative herbivory
No two species of lizards living in the same area have the same dewlap color. The different dewlaps keep species
reproductively isolated
Why are plants likely the first to colonize an island?
seeds can travel in the wind
In the MacArther Wilson Model, the extinction rate is a function of the islands what?
size
What is the most common definition of biodiversity?
the number of different species in a given area
Which activity leads to the most extinction on islands?
human activity
What is one of the causes to threaten habitats on islands?
invasive species
In conservation biology, which landmass would be of most interest?
island
Why are islands of particular concern for conservation biologists?
unusual high rates of extinction
Independent variable goes on which axis?
x
Dependent variable goes on which axis?
y
