1. Define the term lichen.
2. State and explain the organisms that compose a Lichen.
3. Explain how Lichens are used to establish a community or an ecosystem.​

Answers

Answer 1

Answer:

Lichens are bizarre organisms and no two are alike. Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies.

Explanation:

Hope it helps


Related Questions

What is a photosynthetic pigment

A. A man-made compound that reacts to light
B. An oxygen based compound that captures light energy.
C. A light sensitive compound that changes color.
D. A colored compound that captures light energy.

Answers

Answer:

Answer D is correct.

Explanation:

A colored compound that captures light energy.

This photosynthetic pigment means the pigment which is present in chloroplasts to absorb or capture the light energy to do photosynthesis.

Hope this helps you

What causes the planets in our solar system to move counter clockwise

Answers

The initial conditions in the cloud of gas and dust from which our solar system formed happened to be in a counter clockwise direction. That's why most objects in our solar system, including most planets, asteroids etc. move in a counter clockwise direction.

Answer: Most of the objects in our solar system, including the Sun, planets, and asteroids, all rotate counter-clockwise. This is due to the initial conditions in the cloud of gas and dust from which our solar system formed. As this gas and dust cloud began to collapse it also began to rotate.

Conteste los siguientes enunciados, registrando (F) si es falso y (V) si es verdadero. 1. ( ) Una mujer portadora de hemofilia, transmite el alelo portador de la enfermedad al 100% de sus hijos. 2. ( ) Cuando un gen está ligado al cromosoma X con mecanismo de herencia recesivo, significa que el 100% de las mujeres pueden manifestar un fenotipo anormal. 3. ( ) Cuando un gen está ligado al cromosoma X con mecanismo de herencia dominante, significa que el 100% de los hijos varones de un hombre enfermo, pueden manifestar el fenotipo anormal. 4. ( ) En la herencia ligada al cromosoma Y, significa que el fenotipo anormal está presente en el 50% de las mujeres. 5. ( ) Dentro de las enfermedades ligadas al cromosoma Y se encuentra la hemofilia.

Answers

Answer:

1. Verdadero

2. Falso

3. Falso  

4. Falso

5. Verdadero

Explanation:

Los seres humanos, como así también la mayoría de los mamíferos, poseen dos cromosomas sexuales: un cromosoma X y un cromosoma Y. Las hembras poseen 2 cromosomas X (un cromosoma X es heredado de la madre y el otro cromosoma X es heredado del padre); mientras que los hombres tienen un cromosoma X y un cromosoma Y (el cromosoma X es heredado de la madre, mientras que el cromosoma Y es heredado del padre). La hemofilia es una enfermedad recesiva monogénica ligada al cromosoma X, la cual está caracterizada por cuadros hemorrágicos causados por el déficit parcial y/o total de factores de coagulación. Los hombres expresan el fenotipo recesivo con mayor frecuencia que las mujeres para aquellos genes que se encuentran en el cromosoma X y poseen un mecanismo de herencia recesivo, esto debido a que los hombres sólo poseen una copia del alelo ligado al X (lo que hace que el alelo recesivo se exprese con mayor frecuencia en el fenotipo). De este modo, los hombres manifiestan hemofilia con mayor frecuencia que las mujeres porque en mujeres el gen recesivo necesita la presencia de dos copias del alelo defectuoso recesivo para que se exprese en el fenotipo hemofílico (es decir, las mujeres heterocigotas son portadoras de un alelo defectuoso pero no expresan la condición en el fenotipo), mientras que en los hombres la presencia de un sólo alelo defectuoso localizado en su único cromosoma X es suficiente para la expresión del fenotipo recesivo. En hombres, los genes ligados al cromosoma X son siempre heredados de la madre (los hombres heredan del padre el cromosoma Y). Finalmente, la herencia de caracteres ligados al cromosoma Y es muy rara porque los genes localizados en la región diferencial del cromosoma Y son escasos y estos genes solamente pueden ser trasmitidos de padres a hijos varones (ya que se encuentran en el cromosoma Y).

The diagram below shows a light ray striking Medium A and Medium B at the same angle. (4 points)

A rectangle labeled Medium A is drawn on the left. A ray of light travels through air and strikes the surface of medium A making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium A and makes an angle of about 15 degrees with the vertical. A rectangle labeled Medium B is drawn on the right. A ray of light travels through air and strikes the surface of medium B making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium B and makes an angle of about 25 degrees with the vertical.

Which statement is correct?
The speed of the light ray is the same in air and Medium A.

The speed of the light ray is the same in air and Medium B.

Medium A and Medium B have different densities because light refracts at different angles.

Medium A and Medium B have the same density because the light ray strikes both at the same angle.

Answers

Answer:

A the speed of the light ray is the same in air and medium

Can someone please help me!

Answers

The answer is C.

It is the site of gas exchange in the lungs.

Gas exchange occurs only in alveoli. Alveoli are made of thin-walled parenchymal cells, typically one-cell thick, that look like tiny bubbles within the sacs. Alveoli are in direct contact with capillaries (one-cell thick) of the circulatory system.

what is G1 phase in cell?​

Answers

Answer:

The g₁ phase, gap 1 phase, or growth 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis. 

1. An inherited characteristic that allows
anorganism to better survive is called
a(n)-

Answers

Answer:

adaption

Explanation:

What sources must health care workers use when deciding which abbreviations and symbols to use on the job?
a. Those listed in their textbooks
b. Those approved by the facility in which they work
c. Those listed in medical dictionaries and reference books,
d. Those provided by their professional organization.

Answers

B is the correct answer
The correct answer is b

The sticky mass in some chemicals on heating was known as _______________________ fibre or fibre _________.

Answers

Answer:

Americans chemical society

If your body lacks enzymes that break down carbohydrates, it would be unable to get __A__ for energy production. If you lacked the enzyme to digest proteins, you may not absorb enough __B__.

Answers

Answer:

Glucose and amino acid.

Explanation:

If your body lacks enzymes that break down carbohydrates, it would be unable to get glucose for energy production while on the other hand, if you lacked the enzyme to digest proteins, you may not absorb enough amino acid that our body needs for the formation of muscles. Enzymes play a great role in the breakdown of macro food particles into simpler molecules so that it can be absorbed by the cells.

Answer:

A: Sugar Molecules

B: Amino Acids

Hope this helps!

Explanation:

os protozoarios tambem sao chamados de? ​

Answers

Answer:

protozoário

Explanation:

esse é o outro termo para protozoários

The group members met on Saturday working on the project together.

Which revision corrects the error in the sentence?

The group members who were working on the project together met on Saturday.
Working on the project together on Saturday, the group members met.
On Saturday, the group members who were working on the project met together.
The group members met working on the project together on Saturday.

Answers

Answer:

Working on the project together on Saturday, the group members met

Answer:

The answer is B.

Explanation:

A student states: "The molecules being transported in method A must be hydrophobic while the molecules being transported in method B must be hydrophilic". State whether you agree or disagree with this student. Justify your response

Answers

Answer:

I agree.

Explanation:

Yes, I agree with the statement of the student because the molecules that is transported in method A are insoluble in water so it must be transported in hydrophobic medium while on the other hand, the molecules in method B is soluble in water so it must be transported through hydrophilic. So due to different nature of molecules they are transported from different methods of transport.

Help me please picture included

Answers

Answer:

umm I'm sorry but the picture is not coming like I mn its blank

The Pasteur effect shows that yeast consume glucose at a higher rate under anaerobic conditions than under aerobic conditions. Which of the following statements correctly explains this observation?
A. Less ATP is made under anaerobic conditions, so more glucose must be consumed to produce an equivalent amount of ATP.
B. Yeast are photosynthetic, so they are able to produce their own oxygen.
C. This observation is incorrect.
D. Aerobic conditions mean that cells make more ATP and use more glucose.
E. Yeast are obligate anaerobes, so aerobic conditions will kill yeasts.

Answers

According to what I’ve learned in middle school the answer is E
Hope that was helpful <3



How does random mating keep a
population in Hardy-Weinberg
Equilibrium?

A. Choosing a random mate creates variation which helps
the population evolve.

B. Individuals choose their mates causing only certain
traits to be passed on.

C. Mates aren't chosen based on traits so all alleles are
equally likely to be passed on.

D. When all the females of a population randomly choose a
mate and only certain alleles get passed on.

Answers

Answer:

A

explanation:

Classify these hypotheses about the ocean as falsifiable or non-falsifiable.

Answers

The hypotheses about the ocean as

Falsifiable: 1) Limestone erodes faster than basalt when exposed to ocean salt water 2) Shallower tide pools support more algae growth.

Non-falsifiable is: 1) The rugged Panama coastline offers a wonderful experience for fishing enthusiasts. 2) Warm ocean water is more enjoyable to swim in than cool ocean water.

Limestone erodes faster than basalt when exposed to ocean salt water.

This hypothesis is falsifiable. One could conduct an experiment in which samples of limestone and basalt are exposed to ocean salt water and the rate of erosion is measured and compared between the two samples.

The rugged Panama coastline offers a wonderful experience for fishing enthusiasts.

This hypothesis is non-falsifiable. The statement is subjective and cannot be tested or proven true or false. What one person considers a wonderful fishing experience may not be the same for another person.

Shallower tide pools support more algae growth.

This hypothesis is falsifiable. One could conduct an experiment in which algae growth is measured and compared between different depths of tide pools.

Warm ocean water is more enjoyable to swim in than cool ocean water.

This hypothesis is non-falsifiable. The statement is subjective and cannot be tested or proven true or false. What one person finds enjoyable may not be the same for another person.

To learn more about Limestone erodes here

https://brainly.com/question/726226

#SPJ1

A tube with a membrane covering the bottom is placed in a beaker. The membrane allows water to flow through but not salt or glucose. The tube contains an aqueous solution with 4% salt and 20% glucose and the beaker contains an aqueous solution with 12% salt and 6% glucose. How could you describe the solution in the beaker compared to the solution in the tube

Answers

Answer:

The solution in the tube is hypertonic to the solution in the beaker.

Explanation:

To compare the solutions, find the total amount of solutes in both the tube and beaker.

The tube has 4% salt and 20% glucose, so it has 24% solute.

The beaker has 12% salt and 6% glucose, so it has 18% solute.

Since 24 is larger than 18, this means the tube has more solute.

Since the tube has more solute and less water compared to the beaker, it is hypertonic to the beaker.

So, the answer is that the solution in the tube is hypertonic to the solution in the beaker.

Solutions are hypertonic or hypotonic to other solutions according to their solute concentration grade. In the exposed example, the beaker aqueous solution is hypotonic to the tube solution, meaning it is less concentrated.

--------------------

Available data:

The membrane allows water to flow through but not salt or glucoseThe tube contains an aqueous solution with 4% salt and 20% glucoseThe beaker contains an aqueous solution with 12% salt and 6% glucose

We need to describe and compare solutions.

To do it, first, we will review some theoretical framework.

When talking about solutions in compartison with the cell content, we can classify them as follows,

HYPERTONIC ⇒ A hypertonic solution has a higher concentration of solute than the cell. This means that in the cell interior, the solute concentration is lower than in the solution itself.

ISOTONIC ⇒ The solute concentration is the same inside the cell and outside.

HYPOTONIC ⇒ A hypotonic solution has a lower concentration of solute than the cell. This means that in the cell interior, the solute concentration is higher than in the solution itself.  

When a cell is in a hypotonic solution, through osmosis, water moves toward the cell.  

Osmosis is the phenomenon that occurs when two dilutions of different concentrations -in this example, the interior of the tube and the beaker- are separated by a semipermeable membrane.

The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.  

What we need to consider is

• When a cell with semipermeable membrane is placed in a hypotonic solution, water enters the cell.

• When a cell with semipermeable membrane is placed in an isotonic solution, there is no water movement.

• When a cell with semipermeable membrane is placed in a hypertonic solution, water gets out of the cell.

In simple words, in the proposed experiment, glucose and salt -solutes- can not cross the membrane, but water can. The tube represents a cell. So,

The tube has 4% salt and the beaker 12 % saltThe tube has 20% glucose and the beaker 6% glucose.

To make the analysis easier, we can add the concentration percentages of glucose and salt at each side of the membrane, and then compare them.

The tube contains an aqueous solution with 24% solute (4% salt + 20% glucose)The beacker contains an aqueous solution with 18% solute (12% salt + 6% glucose)

We can see that the concentration of solute is higher in the interior of the tube than in the beaker. This difference suggests that water will move forward to the tube interior.

According to this analysis, we can say that

The tube aqueous solution is hypertonic to the beaker solution → More concentrated

The beaker aqueous solution is hypotonic to the tube solution → Less concentrated

---------------------------------------------

You can learn more about hypertonic and hypotonic solutions at

https://brainly.com/question/13210811?referrer=searchResults

https://brainly.com/question/18806725?referrer=searchResults

Which of the following is an example of a
homologous trait?
A. the wings of bees and birds
B. the forearm of different animals
C. the DNA of land animals

Answers

Answer:

the wings on bees and birds

An example of a homologous trait is the wings of bees and birds. The correct option is A.

What are homologous traits?

The Theory of Evolution can be used to explain the homologous features of related species. According to this hypothesis, species develop over time from a common progenitor.

In order to adapt to the new environment, species separated from one another and developed new features. The variety of species observed on Earth today is the result of a process known as speciation.

The homologous features that are shared by related species are proof of their shared ancestry. For instance, despite being different, the wings of a bat and a bird share characteristics.

Therefore, the correct option is A. the wings of bees and birds.

To learn more about homologous traits, refer to the link:

https://brainly.com/question/29570150

#SPJ2


Which of the following statements about the Green Revolution is true?
A. The Green Revolution increased the biodiversity of crops grown around the world.
B. The Green Revolution bettered the environment by encouraging less fertilizer and
pesticide use.
C. The Green Revolution allowed countries that previously imported crops to become
crop exporters.
D. The Green Revolution was applied in the Americas but didn't have a global
impact.

Answers

B) THE green revolution bettered the environment.........

The Green Revolution allowed countries that previously imported crops to become

crop exporters.

What is the Green Revolution?

The Green revolution refers to the period of cultivation of high-yielding crops varieties especially grains by farmers beginning in the period of the 1940s to l960s.

The Green revolution resulted in increased food production among countries that usually imported food, so they became exporters.

Therefore, the Green Revolution allowed countries that previously imported crops to become

crop exporters.

Learn more about Green revolution at: https://brainly.com/question/25077523

#SPJ2

In the taxonomic system, genus is a subdivision of family.
True
Оr
False

Answers

Answer:

Explanation:

genus (pl. genera)

in the modern classification system, a subdivision of a family; includes one or more species of organisms

Question 7 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
O A. Transport proteins allow only enzymes to pass through the
membrane.
O B. It is better for the cell if most molecules are prevented from
entering.
O C. The cell works better when it contains fewer proteins.
D. It helps the cell absorb as many different molecules as possible.

Answers

Answer:

The answer is D

Explanation:

As the cell is mostly dependant on ingested materials so this will help the cell to grow and perform other important activities in the cell

Which is a part of interphase?
A. Prophase
B. Telophase
C. G, phase
D. Cytokinesis

Answers

Answer:

D is the answer.

Explanation:

Hope this helps

In humans, brown eyes are dominant to blue eyes. If a blue-eyed man has children with a brown-eyed woman whose mother has blue eyes, what percentage of the brown-eyed offspring do you expect will be heterozygous

Answers

Answer:

50%

Explanation:

This question involves a gene coding for eye color in humans. The allele for brown eyes (B) are dominant to blue eyes (b). This means that blue-eyed individual will possess genotype: bb.

According to this question, a blue-eyed man (bb) has children with a brown-eyed woman (B_) whose mother has blue eyes (bb). Since the mother of the brown-eyed woman has a blue eye, this means that the woman will be heterozygous for brown eye (Bb).

Hence, the parents in this question will cross as follows: blue eyed man (bb) × brown-eyed woman (Bb). The offspring/children will have the following genotypes (see attached punnet square); Bb, Bb, bb, bb.

Based on the question, 2/4 = 1/2 of the children will be heterozygous for the eye color trait. That is, ½ × 100 = 50%.

. Most of the matter in the universe: A. Exists within stars B. Is made when planets are formed C. Is unknown, called dark matter and energy D. Is blue-shifted

Answers

Answer:

B

Explanation:

is made when planet are formed

YOUR RESPONSE REQUIRES A 3-5 SENTENCE PARAGRAPH.

Do you believe that you can ask questions to better understand the role that DNA has in making who you are? Explain. If you can not explain, what do you need to be able to do so.

Answers

Explanation:

Questions on DNA Structure. What is a "strand" of DNA? How many strands make up a DNA double helix? Each strand is made up of two zones or regions.

. Q.. List any two advantages associated with water stored in the ground.​

Answers

Answer:

It does not evaporate.

It recharges wells near the area.

It provides moisture to the vegetation.

It does not provide breeding grounds for mosquitos , like stagnant water in lakes and ponds.

It is relatively protected from contamination by animal and human waste.

Explanation:

Which of the following statements is MOST accurate?
a. Most people who engage in gambling activities become addicted to it
and end up taking bankruptcy because they cannot pay their bills.
b. People at lower income levels lower use a larger percentage of their
income to buy lottery and scratch tickets than people at higher levels of
income.
c. Gambling is a moral issue, with little or no economic or financial impact
on individuals or society.
d. Casinos only have a positive impact on communities because they create
jobs and generate wealth.

Answers

Answer:

C

Explanation:

if the velocity of a vehicle starting from rest reaches 5m/2s in 2seconds, is the velocity of the vehicle uniform ?explain.​

Answers

Explanation:

Avg speed × total times = total distance

20×25=500

Since acceleration in the 1st interval is same as deceleration in the 3rd interval and deceleration is from the same velocity achieved after acceleration, t

1

=t

3

s

1

=

2

1

×5t

1

2

s

2

=(5t

1

)t

2

s

3

=(5t

1

)×t

3

2

1

×5×t

1

2

=(5t

1

)×t

1

2

1

×5×t

1

2

s

1

+s

2

+s

3

=5t

1

t

2

+5t

1

2

⇒5t

1

2

+5t

1

t

2

=500−−−−1

2t

1

+t

2

=25−−−−2

Solving (1 ) and (2) ⇒t

1

=5,t

2

=15sec

These penguins are all members of the species Aptenodytes patagonicus.

Answers

Answer:

Organisms of the same species can live in different areas, while organisms of the same population live in only one area.

Explanation:

Answer:

Option D

Explanation:

Populations are all in one area

Other Questions
Question 2 of 5What is another name for non-traditional sports?A. AlternativeB. RandomC. ForeignD. Team Fill in the blanks.(3b^3)^2 = _b^_ introduce your self ( family, old, professional experienca...) What are isotopes_??? Should video games and Phones be considered a medium in Mass media? Given: 3x+11=y, solve for x if y = 29 SOMEONE!!!!!!!!!!!!!! In the short run, open-market purchases a. increase investment and real GDP, and decrease interest rates. b. increase real GDP and interest rates, and decrease investment. c. increase investment and interest rates, and decrease real GDP. d. decrease investment, interest rates, and real GDP. What is the value of the expression 3yz y+5z when y = 6 and z = 2? Complete the following answer with correct sentence Was Sandra Cisneros' choice of color a cultural declaration or a political provocation? or Both? I NEED HELP WITH THIS QUESTION ASAP ITS REALLY REALLY URGENT!!!! Two kids, Albert and Bhara, are 20.0 m apart. Albert sees a soccer ball 25.0 m away. If the angle between the line formed by Albert and Bhara and the line from Albert to the soccer ball is 25 degrees, how far is Bhara from the soccer ball? Correctly round your answer to the nearest tenth of a meter. which of the following attributes is not necessary for the information to qualify as a trade secret? Instructions: Find the measure of the indicated angle to the nearest degree. hi, please solve these three questions for me, i have to shoe solving steps. The dominance of English as an international language has facilitated the rise in the use of Chinese logograms. diffusion of popular culture, science, and international trade. the stagnation of the English language in terms of new words added. the increase in American students learning another language. the decline of other national languages and cultural identities. as the main speaker in a debate write your contribution against the motion teachers should not be allowed to use Cane's on students From an 80ft building the angle of elevation of the top of a taller building is 59 degrees and the angle of depression of the base of this building is 65 degrees determine the height of the taller building Dividing integers7. (-154) (-14) =11. (-40) 10=15. 90 (-15)=16. 108 (-9)=17. (-48) (-6)=18. (-105) 7= difference between effort distance and load distance