BIO-131 Lab Practical MCQ
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69 Terms
Which of the following best describes the way that animals obtain energy?
heterotrophic
What is the definition of coelom?
a true body cavity
In bilateral symmetry:
animal has a defined right and left
What is meant by “germ layers”
layers that will give rise to all other structures
What is meant when we say sponges are sessile?
they are immobile
What new anatomical feature is evident in a hydra that is absent in less advanced organisms?
endoderm
What is meant by radial symmetry?
equal sides around a vertical axis
2 characteristics of Rotifers
they are freshwater animals & they have a complete digestive system
What process does PCR resemble in a test tube
DNA replication
In what direction must all addition of new base pairs proceed?
5’ to 3’
What is the enzyme catalyzes the PCR reaction?
DNA polymerase
Why does Taq polymerase need to be thermostable?
so we don't have to add new enzyme each time the cycle reaches in 95 C phase
Why is the buffer needed in a PCR reaction?
to provide the proper conditions for the enzyme to function ideally
Why is the plasmid DNA needed in the PCR reaction?
to provide the template off of which we are trying to amplify a small region
Which of the following is NOT a characteristic of mammals?
exoskeleton
What is the main function of the placenta in a fetal pig?
exchange of CO2 & O2
What is the true definition of a tetrapod?
having 4 limbs
The anus is the opening for what system of the pig’s body?
digestive
What is the correct order of air flow into the pig’s system?
glottis>trachea>lungs
In what body system does the esophagus act?
digestive
In what body system does the pharynx act?
respiratory
What is the main function of the hard palate in the fetal pig?
separate oral from nasal cavities
Which of the following is a structure unique to the class mammalia?
diaphragm
What is the function of the fetal pig’s spleen?
production of red blood cells
Sniegowski’s high ethanol medium is a type of
enrichment medium
What is pen strep?
antibiotic mix
What is the main purpose of an alcohol lamp?
to create a sterile workspace
Which of the following structures does the frog use for respiration?
lungs & skin
Being in the subphylum Vertebrata, what does this mean for the frog?
its notochord is replaced by a vertebral column
The complex sense organs of the frog develop out of its advanced
sensory cortex
What type of symmetry is seen in the frog?
bilateral
One unique characteristic of amphibians is
metamorphosis
After digested food exits the large intestine of the frog, it enters the
cloaca
What is the purpose of the frog’s glottis
respiration
What is the purpose of mesentery
support & traction for organs
What is another term for the pig’s nares?
nostrils
Where would you find the fetal pig’s epiglottis?
at the back of the mouth
What is the correct name for the Kingdom of bacteria organisms
bacteria
Which of the following domains has prokaryotic cells?
archaea & bacteria
What is meant by an organism that is saprotrophic?
sends out digestive enzymes
Peptidoglycans are found in which part of the bacterial cell?
cell wall
What does it tell you about a bacterial cell if is Gram (+)?
it has a thick layer of peptidoglycan
T/F all bacteria have a cell membrane
true
What is colony of bacteria
a group of organisms that are dependent on each other
Which of the following is NOT a type of bacterial shape?
aspergillus
Cyanobacteria:
were once thought to be blue-green algae, are more similar to bacteria than green algae, & lack chloroplasts
Gloecapsa exist:
as colonies
Which of the following is NOT an exclusive characteristic of Phylum Arthropoda?
mesoderm
What is meant by the process of molting?
the exoskeleton is shed and regrown as the arthropod grows
What is hemolymph?
blood and lymph of the arthropod
A crayfish has an open circulatory system, meaning:
the blood filters from tissues to sinuses
What is the function of the ‘green glands’ in crayfish?
digestion
What is the function of the swimmerets?
reproduction
In which unexpected structure do crayfish have teeth?
stomach
What is the name of the stomach structure in the crayfish?
cardiac
What is the term applied to the combination of the head and thorax of crayfish?
cephalothorax
What structure covers the above ‘head & thorax’ structure in crayfish?
carapace
What does the name gymnosperm imply?
a plant with naked seeds
What does the name angiosperm imply?
a flowering plant
What is the sporophyte generation of a pine tree?
the tree itself
In a pine tree the _______ is the male gametophyte and the _______ is the female
pollen grain… ovule
On a microscopic level, we can observe pollen grains to have wide extensions on either side of them. What purpose do these serve?
to help with wind dispersal
In seed containing plants, which generation produces egg and sperm cells?
the gametophyte
In seed containing plants, which generation undergoes meiosis?
the sporophyte
In seed containing plants, after the egg is fertilized, it becomes
the sporangium
What is the purpose of the pollen tube?
delivery of sperm to the ovule
T/F Delivery of pollen in the seed plants requires water
true