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WorksheetsBIO 165 EXAM 4
Total questions: 61
Worksheet time: 37mins
Which of the following is TRUE about an amoeba's digestive system? (select all that apply)
it has long-term storage
its digestion is intracellular
it uses enzymes to break down food
it utilizes phagocytosis to ingest food
it has an alimentary canal
Monogastric animals produce stomach acid in the stomach to digest which nutrients?
Protein
Fibre
Carbohydrates
Lipids
What is the correct order of the ruminant stomachs?
Rumen, omasum, reticulum, abomasum
Abomasum, omasum, rumen, reticulum
Rumen, reticulum, omasum, abomasum
Omaysum, abomasum, rahmen, reticulated
Where are water and nutrients absorbed?
Large intestine
Small intestine
Stomach
Colon
starting in the mouth
What is special about a ruminant digestive system?
The stomach has multiple chambers
The large intestine has a caecum
The small intestine is much longer
The esophagus has extra mucus for the ruminant's fibrous diet
Food broken down by PHYSICAL processes is called...
mechanical digestion
chemical digestion
enzymatic digestion
acid swishing in the stomach
contractions
Which nutrient acquisition step(s) utilize(s) teeth? (select all that apply)
acquisition
ingestion
digestion
absorption
elimination
Which nutrient acquisition step(s) utilize(s) the small intestine? (select all that apply)
Acquisition
Ingestion
Digestion
absorption
elimination
Neurons in a bee's eyes respond to... (select all that apply)
movement
UV light
ommatidia
bright colors
still images
By first training bees on one shape and then changing the shapes under the nectar source of the bee, scientists wanted to determine... (select all that apply)
what is the extent of the shapes they can identify
how is memory encoded and accessed
what is the color threshold that a bee can detect
which shape is most prevalent in natural flowers
how bees feed on different types of flower shapes
A bee's waggle dance developed to communicate... (select all that apply)
the whereabouts of a food source
the whereabouts of danger
the whereabouts of the sun
the whereabouts of a specific odor
the whereabouts of a nectar competitor
Which compartment in the ruminant system most resembles the human stomach?
rumen
reticulum
omasum
abomasum
intestines
In what ruminant compartment(s) does absorption occur? (select all that apply)
rumen
reticulum
omasum
abomasum
intestines
In what ruminant compartment(s) does chemical digestion occur? (select all that apply)
rumen
reticulum
omasum
abomasum
intestines
Where does digestion of carbohydrates begin?
in the small intestine
in the stomach
in the large intestine
in the esophagous
in the mouth
Where does digestion of proteins begin?
in the stomach
in the small intestine
in the mouth
in the liver
in the pancreas
Which is NOT a part of the small intestine?
duodenom
ileum
jugenum
leucium
What is the role of parietal cells in the gastric pit? (select all that apply)
to help pepsin convert into pepsinogen
secrete ions that combine into an acid
to denature and start the chemical digestion of fats
to denature and start the chemical digestion of protein
to help pepsinogen convert into pepsin
What is the role of enteroendocrine cells in the gastric pit? (select all that apply)
to secrete pepsinogen
to secrete ions that combine into an acid
to release gastrin
to stimulate the parietal cells to release ions
to chemically digest fatty acids
Which of the following cells contribute (directly or indirectly) to the digestion of proteins? (select all that apply)
mucin cells
parietal cells
chief cells
enteroendocrine cells
amylase secretory cells
Hydrolysis refers to... (select all that apply)
the breaking of a bond
the addition of water
the formation of a bond
the elimination of water
the breaking of water
Where does digestion of fats and nucleic acids begin? (select all that apply)
in the mouth
in the stomach
in the small intestine
in the large intestine
in the liver
Why do organisms undergo mechanical digestion before they undergo chemical digestion?
to increase the amount of food there is
to allow for larger cells to uptake the broken down nutrients and digest them intracellularly
to allow food particles to travel more quickly through the digestive system
to increase the surface area and make digestion more efficient
Where is insulin released from?
alpha cells of the pancreas
beta cells of the pancreas
alpha cells of the liver
beta cells of the liver
the small intestine
Where is glucagon released from?
alpha cells of the pancreas
beta cells of the pancreas
alpha cells of the liver
beta cells of the liver
the small intestine
The release of glucagon...
stimulates glucagon to break down to glucose
stimulates glycogen to break down to glucose
stimulates insulin to release glycogen
stimulates many glucose monomers to from glycogen
stimulates glycogen to break down to glucose monomers
The release of insulin...
stimulates glucagon to break down to glucose
stimulates glycogen to break down to glucose
stimulates insulin to release glycogen
stimulates many glucose monomers to form glycogen
stimulates glycogen to break down to glucose monomers
What are incretins and what is their role? (select all that apply)
they are hormones
they explain why insulin is not produced after IV glucose administration but does after oral administration
they are released from the large intestine
they are composed of GLP and GIP-1
they are responsible for the incretin effect
What is ghrelin and what is its role? (select all that apply)
it is a hormone that acts on the satiety center
it stimulates appetite
it suppresses appetite
it is released from adipose cells
it causes the body to release insulin
What is leptin and what is its role? (select all that apply)
it is a hormone that is released from the satiety center
it stimulates appetite
it suppresses appetite
it is released from adipose cells
it increases metabolism
What is ghrelin released in response to? (select all that apply)
glucagon presence
insulin presence
low blood glucose levels
high blood glucose levels
protein breakdown
What is the ob gene responsible for?
the release of glucagon
the release of insulin
the release of leptin
the release of ghrelin
the release of incretins
What would you observe in the following pairs of parabiotic mice?
Pair 1: WT + ob/ob
Pair 2: WT + db/db
(credit: http://digitalfirst.bfwpub.com/life_11e/life_activity_50_05.html)
Both the ob/ob mouse and the db/db mouse in the pairs lose weight.
The ob/ob mouse in pair 1 remains obese, but the db/db mouse in pair 2 loses weight.
The ob/ob mouse in pair 1 loses weight, but the db/db mouse in pair 2 remains obese.
Both the ob/ob mouse and the db/db mouse in the pairs remain obese.
You inject a mouse of unknown genotype with leptin and obtain data shown in the graph below.
(credit: http://digitalfirst.bfwpub.com/life_11e/life_activity_50_05.html)
Wild-type (WT) mouse
ob/ob mouse
db/db mouse
ob/ob db/db mouse (double mutant)
When injected with excess leptin, a db/db mouse would...
lose weight, because the leptin it can't produce is supplied to it
gain weight, because its mutation causes leptin to stimulate hunger, making it eat more
neither, leptin would not act on it since its leptin receptors are mutated
start producing its own leptin, since its mutation causes it to need a template hormone to stimulate production
Which of the following correctly labels the mice after a leptin injection?
(credit: http://digitalfirst.bfwpub.com/life_11e/life_activity_50_05.html)
mouse 1: WT
mouse 2: ob/ob
mouse 3: db/db
mouse 1: ob/ob
mouse 2: WT
mouse 3: db/db
mouse 1: db/db
mouse 2: ob/ob
mouse 3: WT
mouse 1: ob/ob
mouse 2: db/db
mouse 3: WT
The two main nervous systems are... (select all that apply)
somatic nervous System
autonomic nervous
central nervous System
peripheral nervous system
sympathetic nervous system
The speed of transmission of a nerve impulse is affected by the
strength of the impulse
concentration of acetyl choline
presence of the myelin sheath
amount of Na+ that enters the neurone
Which region assists in speeding up the conduction of nerve impulses?
I
II
III
IV
Diffusion of sodium ions into the cell occurs at...
I
II
III
IV
The sodium/potassium pump is at work during... (select all that apply)
I
II
III
IV
Which of the following concentrations of K+ and Na+ create a resting potential across an axon membrane?
A
B
C
D
The sodium-potassium pump transports _____ Na+ ions _____ the cell and _____ K+ ions _____ the cell.
3, into
5, out of
3, out of
2, into
4, into
3, out of
2, out of
1, into
2, into
3, out of
The nerves in your fingertips are part of the ___ nervous system
central
peripheral
plant somatic cells are _____ while their gametes are _____.
diploid,
diploid
haploid,
haploid
haploid,
diploid
diploid,
haploid
Which is a characteristic of a fixed action pattern? (select all that apply)
it doesn't need a stimuli to get triggered
it is predictable
it continues to completion once triggered
it is specific to a species
it needs to be learned
Which 2 are parts of the central nervous system?
brain
the lips
spinal cord
nerves in fingertips
What is the formal term for a nerve cell that conducts electrochemical signals through the body?
synapse
neurotransmitter
neuron
vesicle
Which is the receiving end of the nerve cell, that receives signals from other neurons?
cell body
terminal end fiber
dendrite
axon
Which is the long tail-like fiber of the neuron?
dendrite
terminal end fiber
cell body
axon
The sympathetic nervous system controls unconscious bodily functions involved in our:
rest and digest functions
fight or flight response
True or False?
Plants can be pollinated by wind and water.
True
False
Pollen sticks to bees while they _______. (select all that apply)
eat off the tree's fruit
feed on nectar
collect flower petals for protection
do a wiggle dance near a flower
Pollen is to stamen (the male part of the plant) as _____ is to pistil (the female part of the plant).
ovule
anther
sepal
stigma
style
How might climate change alter the relationship between species? (select all that apply)
it changes the ecological timing of certain species and therefore prevents "normal" interaction
Since it's getting hotter, the species are more angry at each other
changing conditions contribute to both individual and population mismatch
it doesn't alter the relationship between species, just locally within populations
the hotter weather affects the DNA and therefore the behavior of organisms
What are the effects of pesticides on a bumblebee queen? (select all that apply)
pesticides reduce the bee's ability to look for food
pesticides kill the queen, resulting in a higher queen turnover rate
pesticides have a negative effect on a colony's fitness
pesticides help the entire colony get access to more food since it kills off other insects
pesticides serve as a food source for the queen, leaving more food for the rest of the colony
What conclusions emerged from Dr. Sprayberry's study? (select all that apply)
bumblebees in a maze were always able to locate the feeder
bumblebees take the most time to locate the feeder with manzate
bumblebees had a harder time finding the feeder with turf builder
bumblebees got confused by the maze, and couldn't find the feeders at all
all fungicides smelled the same to a bumblebee and the type did not have an effect
What more complex characteristics are only present in an earthworm's digestive system? (select all that apply)
gastrovascular cavity
uses enzymes
long-term storage
specialized compartments
extracellular digestion
What is an invasive species and what is its impacts? (select all that apply)
invades the food chain and becomes the primary food source for predators
evolved in the location they currently reside in
migrates on its own in order to invade and compete for resources
competes with another, native species for resources
causes an ecological/economic harm to the environment
How do we most efficiently stop the impacts of invasive plant species on other organisms?
provided targeted support for native plants
stop introducing more native plants into an ecosystem
increase the presence of organisms that eat the invasive plants
stop introducing non-native plants into an ecosystem
stop using pesticides that kill off native plants
