kont24

What is NOT a function of the plasma membrane? A) Communication with other cells B) Structural suppo

What is NOT a function of the plasma membrane? A) Communication with other cells B) Structural suppo

What is NOT a function of the plasma membrane?
A) Communication with other cells
B) Structural support
C) Catalyze macromolecules into subunits
D) Isolate the cell from its surroundings
 

Yananpan   20   1 Reply

bio_man

Urgent! Population Frequency

Urgent! Population Frequency

1. In a randomly mating population of mice, 12 out of every 100 mice born have white fur, a recessive trait. Calculate the homozygous recessive frequency for the population.

2. In a randomly mating population of mice, 1 of every 100 mice

leximads8_   24   1 Reply

bio_man

Using a punnett square to determine probability

Using a punnett square to determine probability

Create and label a Punnett square to determine the possibility of a couple having a color-blind child if the mother has the recessive trait on one X and the father is color-blind. HINT: Use Xb to indicate an X with the color-blindness trait.

dallas99   31   2 Replies

duddy

Describe a situation, including an example, in which it would be important to create a karyotype for ...

Describe a situation, including an example, in which it would be important to create a karyotype for ...

Describe a situation, including an example, in which it would be important to create a karyotype for an individual.

dallas99   21   1 Reply

bio_man

How do the structures of dendrites and axons suit their functions?

How do the structures of dendrites and axons suit their functions?

How do the structures of dendrites and axons suit their functions?

GAboy121   32   1 Reply

bio_man

What tissue makes up the dermis? How does this tissue help the dermis function?

What tissue makes up the dermis? How does this tissue help the dermis function?

What tissue makes up the dermis? How does this tissue help the dermis function?

GAboy121   27   1 Reply

bio_man

From an evolutionary standpoint, why does the inner ear of mammals use fluid pressure waves?

From an evolutionary standpoint, why does the inner ear of mammals use fluid pressure waves?

From an evolutionary standpoint, why does the inner ear of mammals use fluid pressure waves?

GAboy121   25   1 Reply

habiba

Plants are able to measure the length of the night using the ________ system.

Plants are able to measure the length of the night using the ________ system.

Plants are able to measure the length of the night using the ________ system.

mistre   104   2 Replies

mistre

Auxins are used in rooting powders to encourage the formation of well-branched roots. True or False?

Auxins are used in rooting powders to encourage the formation of well-branched roots. True or False?

Auxins are used in rooting powders to encourage the formation of well-branched roots. True or False?

mistre   73   2 Replies

mistre

The only plant hormone that is a gas is cytokinin. True or False?

The only plant hormone that is a gas is cytokinin. True or False?

The only plant hormone that is a gas is cytokinin. True or False?

mistre   65   2 Replies

mistre

An insect that twice touches a Venus flytrap hair changes a(n) ________ stimulus into a(n) ________ ...

An insect that twice touches a Venus flytrap hair changes a(n) ________ stimulus into a(n) ________ ...

An insect that twice touches a Venus flytrap hair changes a(n) ________ stimulus into a(n) ________ signal.
A) electrical; chemical
B) touch; electrical
C) osmotic; mechanical
D) mechanical; touch

mistre   95   2 Replies

mistre

Radish plants under insect attackA) produce the defensive toxin nicotine.B) produce bitter chemicals ...

Radish plants under insect attackA) produce the defensive toxin nicotine.B) produce bitter chemicals ...

Radish plants under insect attack
A) produce the defensive toxin nicotine.
B) produce bitter chemicals and grow spines on their leaves.
C) rapidly fold their petioles together.
D) release salicin, which is converted to salicylic a

mistre   64   2 Replies

mistre

Willow trees and many other plants produce ________, from which aspirin is made.A) nicotineB) ...

Willow trees and many other plants produce ________, from which aspirin is made.A) nicotineB) ...

Willow trees and many other plants produce ________, from which aspirin is made.
A) nicotine
B) acetaminophen
C) acetic acid
D) salicylic acid
E) volantin

mistre   71   2 Replies

mistre

What caterpillar saliva-based chemical stimulates a corn plant to release an alarm signal?A) ...

What caterpillar saliva-based chemical stimulates a corn plant to release an alarm signal?A) ...

What caterpillar saliva-based chemical stimulates a corn plant to release an alarm signal?
A) Florigen
B) Methyl salicylate
C) Salicylic acid
D) Volicitin
E) Salicin

mistre   67   2 Replies

mistre

A new type of strawberry plant produces fruit in the late spring, throughout the summer, and into ...

A new type of strawberry plant produces fruit in the late spring, throughout the summer, and into ...

A new type of strawberry plant produces fruit in the late spring, throughout the summer, and into the fall. It is a(n) ________ plant.
A) day-neutral
B) long-day
C) short-day
D) indeterminate-day
E) night-determinate

mistre   69   2 Replies

mistre

Plants that flower in Canada in August and in the United States in July (when nights are short) are ...

Plants that flower in Canada in August and in the United States in July (when nights are short) are ...

Plants that flower in Canada in August and in the United States in July (when nights are short) are ________ plants.
A) day-neutral
B) long-day
C) short-day
D) indeterminate-day
E) night-determinate

mistre   73   2 Replies

mistre

Plants that flower in the United States only in the early spring (when nights are long) are ________ ...

Plants that flower in the United States only in the early spring (when nights are long) are ________ ...

Plants that flower in the United States only in the early spring (when nights are long) are ________ plants.
A) day-neutral
B) long-day
C) short-day
D) indeterminate-day
E) night-determinate

mistre   63   2 Replies

mistre

What happens to phytochromes after several days of dark, rainy weather?A) Pr and Pfr become unstable ...

What happens to phytochromes after several days of dark, rainy weather?A) Pr and Pfr become unstable ...

What happens to phytochromes after several days of dark, rainy weather?
A) Pr and Pfr become unstable and both are destroyed.
B) Pr and Pfr are both formed from inactive phytochrome.
C) Pr absorbs darkness and converts to Pfr.
D)

mistre   65   2 Replies

mistre

Senescence in plants usually involvesA) shade from other plants.B) the formation of an abscission ...

Senescence in plants usually involvesA) shade from other plants.B) the formation of an abscission ...

Senescence in plants usually involves
A) shade from other plants.
B) the formation of an abscission layer.
C) the presence of cytokinins.
D) apical dominance.
E) the development of photosynthetic enzymes.

mistre   56   2 Replies

mistre

At night, when little red light is available to the plants in an area, what occurs?A) Pr and Pfr are ...

At night, when little red light is available to the plants in an area, what occurs?A) Pr and Pfr are ...

At night, when little red light is available to the plants in an area, what occurs?
A) Pr and Pfr are both destroyed.
B) Pr and Pfr are both formed from inactive phytochrome.
C) Pr is converted to Pfr.
D) Pfr is converted to Pr.

mistre   66   2 Replies

mistre

Which of the following is true of the relationship between the phytochrome system and the biological ...

Which of the following is true of the relationship between the phytochrome system and the biological ...

Which of the following is true of the relationship between the phytochrome system and the biological clock of plants?
A) The phytochrome system serves as the biological clock for plants.
B) The phytochrome system manufactures special cells

mistre   60   2 Replies

mistre

Which pigment is responsible for the phototropism responses of plants?A) ChlorophyllB) PhytochromeC) ...

Which pigment is responsible for the phototropism responses of plants?A) ChlorophyllB) PhytochromeC) ...

Which pigment is responsible for the phototropism responses of plants?
A) Chlorophyll
B) Phytochrome
C) Auxin
D) Xanthophyll
E) Ethylene

mistre   46   2 Replies

mistre

Which environmental factor is most significant for flowering?A) Day lengthB) TemperatureC) Water ...

Which environmental factor is most significant for flowering?A) Day lengthB) TemperatureC) Water ...

Which environmental factor is most significant for flowering?
A) Day length
B) Temperature
C) Water availability
D) Nitrogen availability
E) Light intensity

mistre   30   2 Replies

mistre

Most scientists believe that the lateral buds nearest the top of a tree are most inhibited from ...

Most scientists believe that the lateral buds nearest the top of a tree are most inhibited from ...

Most scientists believe that the lateral buds nearest the top of a tree are most inhibited from sprouting because they
A) are most exposed to the light.
B) are shaded by the apical bud and the top of the tree.
C) produce gibberellins.

mistre   53   2 Replies

mistre

Which of these hormones causes cell elongation, promotes apical dominance, and stimulates root ...

Which of these hormones causes cell elongation, promotes apical dominance, and stimulates root ...

Which of these hormones causes cell elongation, promotes apical dominance, and stimulates root branching?
A) Abscisic acid
B) Auxin
C) Cytokinin
D) Gibberellin
E) Ethylene

mistre   61   2 Replies

mistre

When auxin accumulates on the lower side of the root of a germinating seed, itA) decreases cell ...

When auxin accumulates on the lower side of the root of a germinating seed, itA) decreases cell ...

When auxin accumulates on the lower side of the root of a germinating seed, it
A) decreases cell elongation on the lower side of the root.
B) increases cell elongation on the lower side of the root
C) decreases the use of energy by the

mistre   50   2 Replies

mistre

________ induces dormancy in seeds and buds and causes stomata to close.A) AuxinB) EthyleneC) ...

________ induces dormancy in seeds and buds and causes stomata to close.A) AuxinB) EthyleneC) ...

________ induces dormancy in seeds and buds and causes stomata to close.
A) Auxin
B) Ethylene
C) Abscisic acid
D) Cytokinin
E) Gibberellin

mistre   50   2 Replies

mistre

What causes the "leaf drop" that occurs in woody plants in preparation for winter ...

What causes the "leaf drop" that occurs in woody plants in preparation for winter ...

What causes the "leaf drop" that occurs in woody plants in preparation for winter dormancy?
A) Suppressed auxin production
B) Increased chlorophyll development
C) Inhibition of gibberellin
D) Increased ethylene productio

mistre   45   2 Replies

mistre

Elongation of cells in stems is promoted byA) ethylene and cytokinins.B) auxins and gibberellins.C) ...

Elongation of cells in stems is promoted byA) ethylene and cytokinins.B) auxins and gibberellins.C) ...

Elongation of cells in stems is promoted by
A) ethylene and cytokinins.
B) auxins and gibberellins.
C) enzymes and phytochromes.
D) abscisic acid and ethylene.
E) cytokinins and abscisic acid.

mistre   36   2 Replies

mistre

AuxinA) inhibits stem elongation.B) promotes phototropism.C) stimulates flowering.D) promotes cell ...

AuxinA) inhibits stem elongation.B) promotes phototropism.C) stimulates flowering.D) promotes cell ...

Auxin
A) inhibits stem elongation.
B) promotes phototropism.
C) stimulates flowering.
D) promotes cell division.
E) causes the development of an abscission layer.

mistre   32   2 Replies

mistre

EthyleneA) promotes gravitropism.B) slows root and shoot elongation.C) prevents leaf senescence.D) ...

EthyleneA) promotes gravitropism.B) slows root and shoot elongation.C) prevents leaf senescence.D) ...

Ethylene
A) promotes gravitropism.
B) slows root and shoot elongation.
C) prevents leaf senescence.
D) stimulates seed germination.
E) causes phototropism.

mistre   26   2 Replies

mistre

To encourage the formation of well-developed, heavily branched roots, you should treat cuttings ...

To encourage the formation of well-developed, heavily branched roots, you should treat cuttings ...

To encourage the formation of well-developed, heavily branched roots, you should treat cuttings with
A) ethylene.
B) gibberellin.
C) auxin.
D) abscisic acid.

mistre   44   2 Replies

mistre

What will happen to a long-day plant, such as spinach, if the light—dark pattern is interrupted by ...

What will happen to a long-day plant, such as spinach, if the light—dark pattern is interrupted by ...

What will happen to a long-day plant, such as spinach, if the light—dark pattern is interrupted by a flash of light for several days in a row during the spring?
A) Nothing will happen; growth and development will continue as normal.
B) The

mistre   24   2 Replies

mistre

________ maintains seed dormancy, and ________ ends seed dormancy by stimulating enzymes that break ...

________ maintains seed dormancy, and ________ ends seed dormancy by stimulating enzymes that break ...

________ maintains seed dormancy, and ________ ends seed dormancy by stimulating enzymes that break down the food reserves of the seed to fuel seedling growth.
A) Gibberellin; abscisic acid
B) Abscisic acid; gibberellin
C) Auxin; cytok

mistre   47   2 Replies

mistre

A botanist who wants to stimulate flower formation could treat the plants withA) abscisic acid.B) ...

A botanist who wants to stimulate flower formation could treat the plants withA) abscisic acid.B) ...

A botanist who wants to stimulate flower formation could treat the plants with
A) abscisic acid.
B) auxin.
C) cytokinin.
D) gibberellin.
E) ethylene.

mistre   29   2 Replies

mistre

In 2007, research confirmed the existence of hormones that control the timing of flowering. These ...

In 2007, research confirmed the existence of hormones that control the timing of flowering. These ...

In 2007, research confirmed the existence of hormones that control the timing of flowering.  These hormones are called
A) auxins.
B) florigens.
C) cytokinins.
D) ethylenes.
E) abscisic acids.

mistre   24   2 Replies

mistre

Seed germination is stimulated byA) auxin.B) gibberellin.C) cytokinin.D) ethylene.E) abscisic acid.

Seed germination is stimulated byA) auxin.B) gibberellin.C) cytokinin.D) ethylene.E) abscisic acid.

Seed germination is stimulated by
A) auxin.
B) gibberellin.
C) cytokinin.
D) ethylene.
E) abscisic acid.

mistre   27   2 Replies

mistre

________ triggers the formation of weak-celled abscission layers in leaves and fruits, allowing them ...

________ triggers the formation of weak-celled abscission layers in leaves and fruits, allowing them ...

________ triggers the formation of weak-celled abscission layers in leaves and fruits, allowing them to drop off at appropriate times during the year.
A) Auxin
B) Gibberellin
C) Cytokinin
D) Ethylene
E) Abscisic acid

mistre   25   2 Replies

mistre

Roots grow downward and shoots grow upward due toA) auxin.B) gibberellin.C) cytokinin.D) ethylene.E) ...

Roots grow downward and shoots grow upward due toA) auxin.B) gibberellin.C) cytokinin.D) ethylene.E) ...

Roots grow downward and shoots grow upward due to
A) auxin.
B) gibberellin.
C) cytokinin.
D) ethylene.
E) abscisic acid.

mistre   22   2 Replies

mistre

The synthetic herbicide 2,4-D is actually a(n)A) cytokinin.B) ethylene gas.C) florigen.D) auxin.E) ...

The synthetic herbicide 2,4-D is actually a(n)A) cytokinin.B) ethylene gas.C) florigen.D) auxin.E) ...

The synthetic herbicide 2,4-D is actually a(n)
A) cytokinin.
B) ethylene gas.
C) florigen.
D) auxin.
E) gibberellin.

mistre   26   2 Replies

mistre