Exam Two Bio

Question 1 of 41

1

Blood sugar is regulated by two hormones released from the pancreas. These hormones, insulin and glucagon, have antagonistic expression. Which of the following is true about insulin and glucagon?

Select one of the following:

A.When one hormone is elevated, the other is low
B. insulin is typically released following a period of not eating so that you can have some sugar for energy
C. glucagon, when released, promotes the uptake of glucose and other sugars into storage cells
A and B
A and C

Explanation

Question 2 of 41

1

Suppose you are a Calcium ion in the soil and the plant nearby depends on you for some of its signal transduction properties. After hanging around in the soil for a while, you want to find your way into the xylem of the plant. Upon encountering the root hair, you stumble upon a lot of cellulose and migrate along what seems like an easy route to the xylem until you encounter this impenetrable obstacle. Which choice below describes this scenario best?

Select one of the following:

You, the calcium ion, found your way into the apoplastic route and have just encountered the vascular cambium and cannot cross into the xylem
you, the calcium ion, found your way into the symplastic route and after crossing through several plasmodesmata realized you can't enter the xylem since you are a positively charged ion and can't cross cell membranes
you, the calcium ion, found your way into the apoplastic route and have just encountered the casparian strip. In order to get into the xylem, you must cross the plasma membrane of that endodermal cell.
You, the calcium ion, found your way into the symplastic route but encountered a dead tracked and it's lignified walls are keeping you out.

Explanation

Question 3 of 41

1

Probably the most significant drawback to GMO's is...

Select one of the following:

Food made with GMO's can readily make people sick
The possibility of utilizing GMO's can readily make people sick
the possibility of utilizing GMO's for biofuels
The potential for the growth of superweeds
they cause allergies

Explanation

Question 4 of 41

1

Mutant plants have been isolated whose embryo sacs develop without polar nuclei. What would be the consequences of this mutation?

Select one of the following:

This plant would not be able to make male gametophytes
this plant's female gametophyte would not survive
upon fertilization, the zygote would be without nourishment and likely not survive
development would be slowed but still successful as long as a fruit and seed coat are still there
the megasporangium would not be able to do meiosis

Explanation

Question 5 of 41

1

Fruits are ovaries

Select one of the following:

True
False

Explanation

Question 6 of 41

1

This simplified figure of circles inside circles represents...

Select one of the following:

Primary growth in woody plants
Secondary growth in woody plants
both primary and secondary growth in woody plants
primary growth of just shoots in woody plants
primary growth of just roots in woody plants

Explanation

Question 7 of 41

1

Of the layers of cells listed in the figure, which are INCORRECTLY matched with their corresponding tissue type?

Select one of the following:

Secondary xylem-vascular tissue
pith- ground tissue
epidermis- dermal tissue
cortex- vascular tissue
secondary phloem- vascular tissue

Explanation

Question 8 of 41

1

In general, plants don't get metastatic (means that it spreads) cancer because the cells do not move around. However, plants can get large tumors that resemble cancer. knowing what you know about how cancer works, which cell layer, if "cancerous" would grow a tumor fastest?

Select one of the following:

Epidermis
Cortex
Vascular Cambium
Secondary xylem
pith

Explanation

Question 9 of 41

1

We discussed several mechanisms of negative and positive feedback during this unit. Which of the following are correctly matched?

Select one of the following:

A. oxytocin's control of labor contractions- positive feedback
B. ethylene's role in fruit ripening- positive feedback
C. Thyroid hormone's role in turning it's own secretion on/off- negative feedback
A and C
A, B and C

Explanation

Question 10 of 41

1

Your evil roommate hates the color green and decides to paint all of the leaves of your plant with a black paint that doesn't allow light through, What type of cell is primarily affected?

Select one of the following:

Collenchyma
Parenchyma
xylem cells
sclerenchyma
companion cells

Explanation

Question 11 of 41

1

A plant seed...

Select one of the following:

includes the zygotes and endosperm
includes the zygote, endosperm and ovary
includes the zygote, endosperm and seed coat
includes the zygote and seed coat
includes the endosperm and seed coat

Explanation

Question 12 of 41

1

This anterior pituitary hormone promotes growth of bone, muscles and tissues

Select one of the following:

Growth hormone
aldosterone
antidiuretic hormone
glucagon
oxytocin

Explanation

Question 13 of 41

1

water pulled into the plant from a root cell could be found in which parts of the plant

Select one of the following:

1
2
3
4
any of the above

Explanation

Question 14 of 41

1

In which compartment would you find active photosynthesis happening?

Select one of the following:

1 and 2
3 only
4 only
3 and 4
2, 3 and 4

Explanation

Question 15 of 41

1

The weather outside over the past week has been dry and sunny, but the owner of the sunflower in the figure above is making sure to water the flower daily. Which of the following would be true under these conditions?

Select one of the following:

Transport in compartments 1 and 2 would be faster and happening more often than normal over the past week
Transport in compartments 1 and 2 would be slower and happening less often than normal over the past week
increasing water potential would be driving transpiration at a higher rate than usual
bulk flow would slow due to the lack of rainfall
compartment cells would be releasing more O2 than usual

Explanation

Question 16 of 41

1

This annoying kid in your chem lab says he is going to solve the problem of world hunger by eliminating bacteria in the soil so that plants will be healthier. What is/are the problem(s) with that statement?

Select one of the following:

Bacteria form mycorrhizae with plant roots, providing them with additional absorptive power in the soil
bacteria in the soil perform nitrogen fixation, providing plants with the nitrogen they need to carry out cellular processes
bacteria in the soil cross the apoplastic route and will not be allowed to enter the plant due to the impenetrable ground tissue
bacteria form symbiotic relationships with the plant and provide it with the carbohydrates necessary for it to grow
bacteria do all of the above! that annoying kid is so annoying!

Explanation

Question 17 of 41

1

You are taking care of your crazy botanist neighbor's mutated plant over the weekend. You notice that this plant is oddly flexible and lacks the rigid support that you observe in other plants. Which plant cell type might be low functioning or not functioning at all in this mutant plant?

Select one of the following:

Collenchyma
Parenchyma
Sclerenchyma
Tracheids
Companion cells

Explanation

Question 18 of 41

1

A molecule of oxytocin is circulating around in your blood stream. You receive flowers from your mom for Valentine's Day (although a week late, c'mon mom). How does that oxytocin know to travel to your brain and create the love/bonding feeling that you get when you receive your flowers?

Select one of the following:

Oxytocin is synthesized in the brain so it's right by where it needs to go
oxytocin will travel to where there are receptors for it
Oxytocin, as a peptide hormone, will easily cross cell membranes but only some cells will interpret its signal as love and bonding
Oxytocin will travel to posterior pituitary cells
none of the above

Explanation

Question 19 of 41

1

Which of the plant cell types below would you not find in vascular tissue?

Select one of the following:

Companion Cells
Tracheids
Sieve tube elements
vessel elements
none of the above (i.e. all would be found in vascular tissue)

Explanation

Question 20 of 41

1

Which of the plant cell types below would you not find in vascular tissue?

Select one of the following:

Companion Cells
Tracheids
Sieve tube elements
vessel elements
none of the above (i.e. all would be found in vascular tissue)

Explanation

Question 21 of 41

1

Which of the following represent (an) accurate role(s) of H+ in plant biology?

Select one of the following:

A. Aid in the cotransport of sugar into sugar sinks
B. Aid auxin in helping plants grow via pumping H+ into the cell wall matrix
C. It is the ion that is responsible for membrane potential in plants
A and C
A, B and C

Explanation

Question 22 of 41

1

You insist to your roommate that while the weather is cold, you should go build a snowman in the center of campus. How does your body work to keep you warm while you are building Olaf the snowman?

Select one of the following:

Blood vessels to the skin and extremities are vasodilated to keep the skin warm
Blood vessel to the skin and extremities are vasoconstrictor to keep heat more toward the core organs
metabolism in your body slows down to save energy and keep you warm
insulin gets released to give you more energy, thereby warming you up
all of the above

Explanation

Question 23 of 41

1

a population of self-fertlizing plants is out competing a population of non self-fertilizing plants in a given habitat, until a parasite invades the area, and after only a few years, only the non- self fertilizing plants are still present. The best explanation for this would be

Select one of the following:

Evolutionarily adapted plants are more fit for their environment as long as that environment does not change
Genetic variation resulting from non self fertilization is not an advantage in a stable environment
The cost of non self fertilization outweighs the advantages in the short term
All of the above
None of the above

Explanation

Question 24 of 41

1

Under what conditions would stomata be closed?

Select one of the following:

Auxin levels are high
guard cells are turgid
potassium in the cells surrounding the guard cells has flown into the guard cells
abscisic acid levels are high
the air surrounding the tree has a water potential of -50mPa

Explanation

Question 25 of 41

1

Pollination...

Select one of the following:

Requires only the male gametophyte
Cannot happen via mechanisms other than insects' carrying the pollen
Results in a mitotic division of the sperm to generate the pollen tube
Happens on the anther of the flower
Isn't necessary in asexual reproduction

Explanation

Question 26 of 41

1

Auxin and phytochrome resemble each other in that...

Select one of the following:

A. They both contain pigments
B. they both affect gene expression
C. they both antagonize ethylene
A and B
B and C

Explanation

Question 27 of 41

1

In leaf abscission, some plant cells are undergoing apoptosis so that the leaf can fall out at the right spot and at the right time. The hormone governing this apoptosis is...

Select one of the following:

Auxin
Abscisic acid
growth hormone
ethylene
phytochrome Pfr

Explanation

Question 28 of 41

1

You are a plant cell in the root and recently spent some time elongating, very likely via auxin signaling. What's next for you?

Select one of the following:

You will begin to specialize in structure and function, joining the zone of differentiation
You will start to undergo a significant number of mitotic divisions, joining the zone of cell division
the H+ from the acid growth mechanism will lignify your cell walls and you will become a xylem cell
cells nearby will be inhibited from growing since you are growing so well
you will become a parenchyma cell because of elongation

Explanation

Question 29 of 41

1

The plant embryo...

Select one of the following:

A. was the zygote before it became the embryo
B. will be the sporophyte after it becomes the embryo
C. can survive independently of endosperm
A and B
A, B and C

Explanation

Question 30 of 41

1

You are observing an unknown animal species in the Amazon rain forest and want to know whether it is an ectotherm or an endotherm. Which of the following methods would be the least helpful in making this determination?

Select one of the following:

Determine the animal's method of urine production and compare it to the ambient temperature at various times throughout the day and night
Measure the animal's rate of oxygen consumption and compare it to ambient temperature at various times through out the day and night
Observe the animal's behavior and activity level and compare it to ambient temperature at various times throughout the day and night
Measure the animal's body temperature and compare it to ambient temperature at various times throughout the day and night

Explanation

Question 31 of 41

1

What is one way that primary growth in shoots is disrupted?

Select one of the following:

The vascular cambium stops dividing
Ethylene production decreases
Production of the casparian strip
if an axillary bud is too close to an apical bud
Water potential in the xylem decreases

Explanation

Question 32 of 41

1

Which of the following is an example of Homeostasis?

Select one of the following:

You take a hot shower and your body temperature increases
you go swimming in a cold lake and your body temperature decreases
you overeat for a week and you gain weight
You run a marathon and you get thirsty
None of the above

Explanation

Question 33 of 41

1

Double fertilization in plants is an evolutionary advantage because it

Select one of the following:

Increases genetic diversity over single fertilization
Ensures endosperm development only occurs in fertilized ovules
Provides a "back up" in case the first fertilization goes wrong
results in "twins" for every new offspring
Doubles the number of offspring

Explanation

Question 34 of 41

1

Dwight Schrute (and any plant biology text) would tell you that ____ is the most important inorganic nutrient for plants

Select one of the following:

Phosphorus
Nitrogen
Iron
Calcium
Magnesium

Explanation

Question 35 of 41

1

We discussed one positive impact of GMO's is the the ability to engineer food that can address world hunger and malnutrition. One such example was Golden rice, which is rice fortified with __________ to prevent childhood blindness.

Select one of the following:

Iron
Vitamin D
Vitamin A
Vitamin C
Iodine

Explanation

Question 36 of 41

1

Plants respond to cold stress y altering their plasma membranes. Specifically, how is this done?

Select one of the following:

By increasing the proportion of saturated fatty acids in their plasma membrane
by increasing the proportion of unsaturated fatty acids in their plasma membrane
by increasing the density of the cellulose in their cell walls
By decreasing the density of cellulose in their cell walls
By making their plasma membrane more permeable to water

Explanation

Question 37 of 41

1

The diagram on the left descries a molecular switching mechanism. Which is true about the Pf to Pfr interconversion?

Select one of the following:

A. Pf will covert to Pfr faster than the reverse
B. Pf will convert to Par if conditions are good for the plant to grow and respond to light
C. If seeds are kept in the dark, the majority of the phytochrome if Pf
A and C
A, B and C

Explanation

Question 38 of 41

1

You leave for the weekend and have your best friend water your plants for you. Its the weekend and your friend is only mildly responsible, so upon your return, he confesses to you that he accidentally watered your plants with lemon lime Gatorade (it was left over mixer from National Marquette Day). Your plant is stressed out but still alive. What probably happened as a result of the gatorade watering event?

Select one of the following:

Water potential in the soil increased and your plant got dehydrated
water potential in the soil decreased and your plant to dehydrated
water potential in the soil increased and your plant got over hydrated
water potential in the soil decreased and your plant go over hydrated

Explanation

Question 39 of 41

1

Where does meiosis occur in a flowering plant?

Select one of the following:

A megasporocytes
a microsporocyte
pollen tube
zygote
megasporocyte and microsporocyte

Explanation

Question 40 of 41

1

You are working with an angiosperm in the lab that periodically grows to have no petals but normal sepals, stamens and carpels. What might be going on?

Select one of the following:

A. Gene B has some altered expression in your angiosperm
B. Gene A has some altered expression in your angiosperm
C. gene C has some altered expression in your angiosperm
Both A and B are possibilities
your lab mate eats petals

Explanation

Question 41 of 41

1

In which of the four flower organs listed in the diagram above would you find the female gametophyte (at any time during an angiosperm life cycle)?

Select one of the following:

Carpel only
Carpel or sepal
Carpel, sepal or petal
Carpel or stame
Stamen only

	Created by Emma Berghoefer about 5 years ago

Biology 1002 Quiz on Exam Two Bio, created by Emma Berghoefer on 19/04/2019.

Exam Two Bio

Question 1 of 41

Blood sugar is regulated by two hormones released from the pancreas. These hormones, insulin and glucagon, have antagonistic expression. Which of the following is true about insulin and glucagon?

Select one of the following:

Explanation

Question 2 of 41

Select one of the following:

Explanation

Question 3 of 41

Probably the most significant drawback to GMO's is...

Select one of the following:

Explanation

Question 4 of 41

Mutant plants have been isolated whose embryo sacs develop without polar nuclei. What would be the consequences of this mutation?

Select one of the following:

Explanation

Question 5 of 41

Fruits are ovaries

Select one of the following:

Explanation

Question 6 of 41

This simplified figure of circles inside circles represents...

Select one of the following:

Explanation

Question 7 of 41

Of the layers of cells listed in the figure, which are INCORRECTLY matched with their corresponding tissue type?

Select one of the following:

Explanation

Question 8 of 41

In general, plants don't get metastatic (means that it spreads) cancer because the cells do not move around. However, plants can get large tumors that resemble cancer. knowing what you know about how cancer works, which cell layer, if "cancerous" would grow a tumor fastest?

Select one of the following:

Explanation

Question 9 of 41

We discussed several mechanisms of negative and positive feedback during this unit. Which of the following are correctly matched?

Select one of the following:

Explanation

Question 10 of 41

Your evil roommate hates the color green and decides to paint all of the leaves of your plant with a black paint that doesn't allow light through, What type of cell is primarily affected?

Select one of the following:

Explanation

Question 11 of 41

A plant seed...

Select one of the following:

Explanation

Question 12 of 41

This anterior pituitary hormone promotes growth of bone, muscles and tissues

Select one of the following:

Explanation

Question 13 of 41

water pulled into the plant from a root cell could be found in which parts of the plant

Select one of the following:

Explanation

Question 14 of 41

In which compartment would you find active photosynthesis happening?

Select one of the following:

Explanation

Question 15 of 41

The weather outside over the past week has been dry and sunny, but the owner of the sunflower in the figure above is making sure to water the flower daily. Which of the following would be true under these conditions?

Select one of the following:

Explanation

Question 16 of 41

This annoying kid in your chem lab says he is going to solve the problem of world hunger by eliminating bacteria in the soil so that plants will be healthier. What is/are the problem(s) with that statement?

Select one of the following:

Explanation

Question 17 of 41

You are taking care of your crazy botanist neighbor's mutated plant over the weekend. You notice that this plant is oddly flexible and lacks the rigid support that you observe in other plants. Which plant cell type might be low functioning or not functioning at all in this mutant plant?

Select one of the following:

Explanation

Question 18 of 41

A molecule of oxytocin is circulating around in your blood stream. You receive flowers from your mom for Valentine's Day (although a week late, c'mon mom). How does that oxytocin know to travel to your brain and create the love/bonding feeling that you get when you receive your flowers?

Select one of the following:

Explanation

Question 19 of 41

Which of the plant cell types below would you not find in vascular tissue?

Select one of the following:

Explanation

Question 20 of 41

Which of the plant cell types below would you not find in vascular tissue?

Select one of the following: