The _______ is responsible for cellular respiration in eukaryotic cells

Answers

Answer 1
The Mitochondrion is responsible for respiration

Related Questions

Compare and contrast signs and symptoms of emphysema and chronic bronchitis

Answers

emphysema=dry, hard,unproductive cough spells. this disease process is caused by working in coal mines, industry work with no mask.
bronchitis is inflammation of lung bronchules, unproductive cough, with lung pain..requires antibiotics..




The animal phylum most like the protists that gave rise to the animal kingdom is _____. see concept 33.1 (page 688)

Answers

Answer: Porifera

The animal phylum porifera constitute the sponges that is most like the protists that gave rise to animal kingdom. One evidence is that they have been defined as multi-celled immobile animals or metazoans that have water intake and outlet openings, which is connected by chambers lined with choanocytes or cells with whip-like flagella. Another evidence that supports this includes the lack of true tissue in sponges.

Which type of immunity defends against any type of invader?

Answers

Which type of immunity defends against any type of invader?

Answer : Nonspecific

What has occurred when a solid forms out of the mixing of two liquids in a chemical reaction?

Answers

 the solid forms disolve in a chemical reaction

That means that the reactants of the chemical reaction have created or formed   1 or 2 new solid products, or precipitates (formation of a solid)

This also means that at least one of the products does not dissolve in solution

Tommy lives at 60 degrees north latitude. He watches the day's weather forecast and learns that the polar jet stream will be positioned over his town today.


Image courtesy of NOAA

Judging from the above diagram, Tommy could predict ______ and _______ today.

Answers

Tommy could predict low air pressure and precipitation

Answer:

low pressure; precipitation

Explanation:

:)

A client at 38 weeks of gestation is admitted to labor and delivery for the management of preeclampsia and is placed on a magnesium sulfate iv drip. explain the signs of magnesium toxicity for which the nurse should monitor.

Answers

One of the 1st sign of magnesium toxicity is the absence of deep tendon reflexes. The nurse should assess patellar reflexes to determine this. Also, additional signs and symptoms include nausea, diarrhea, breathing problems and puts the patient at a high risk for heart attack.

The diagram below represents a human organ system the major function of the system is to:

1. Provide immunity essential for survival of each individual in a population.
2. Provide cells that are necessary for the survival of the species.
3. Produce chemical messages are necessary for nerve cell development.
4. Control the passage into and out of a developing fetus.


Please choose the answer for me please. I need help with that question and explain why it is the answer please so I can understand.

Answers

Hello,

Here is your answer:

The proper answer to this question is option B "Provide cells that are necessary for the survival of the species". Without feels your body cannot survive.

Your answer is B.

If you need anymore help feel free to ask me!

Hope this helps!

In order to grow more of a certain type of cell, a scientist should:
a.design a model of that type of cell.
b.observe the cell with a light microscope.
c.expose the cell to an electron microscope.
d.prepare a culture of that type of cell.

Answers

D. Prepare a culture of that type of cell.

Physical assessment of a client in active labor reveals that the cervix is dilated 3 to 4 cm and 50% effaced, the fetus is in the right sacrum anterior (rsa) position, and contractions are 5 minutes apart. where should the nurse place the stethoscope to best locate the fetal heart tones?

Answers

When the fetus's back is on the right side of the mother and the fetal sacrum is in the lower portion of the fundus, the fetus is in the right sacrum anterior position and the fetal heart can be heard in the right upper quadrant. Location b is appropriate when the fetus is in the right occipital posterior position. Location C is appropriate when the fetus is in the left sacrum anterior position. Location D is appropriate when the fetus is in the left occipital anterior position.

Explain the mechanisms for movement of materials across cellular membranes anatomy

Answers

There are 2 types of transport mechanisms that involve the movement of materials across the cellular membrane:

1. Passive Transport Mechanisms which is the movement of materials that does not require energy. Instead the movement relies on the permeability of the cell. Under this are three kinds of passive transport mechanisms:

a. Simple Diffusion: 
- the movement of materials from a region of higher concentration to lower concentration. No external energy is necessary for the movement. The materials supply the energy themselves. 

b. Facilitated Diffusion:
This differs from simple diffusion because the movement is facilitated by proteins that make up the structure of the membrane. The proteins include channel proteins that allow ions and smaller molecules to cross the membrane. The other protein are the carrier proteins, which bind to materials like sugar molecules and move it across the membrane.  

c. Osmosis:
This is the diffusion of water across the membrane. Osmosis moves water from regions where there are more water molecules of water per volume to regions where there are less water molecules per volume.  

2. Active transport on the other hand is a movement mechanism that requires energy. It uses the energy to send materials against the direction it is coming from through simple diffusion. This mechanism is used in a way to keep unwanted ions or other materials out of the cell.

Cells use mechanisms like active transport, passive diffusion, facilitated diffusion, co-transport, and endocytosis to move materials across their membranes, some requiring ATP and others happening passively supporting cellular function.

Mechanisms for Movement of Materials Across Cellular Membranes

Cells transport materials across their membranes using several mechanisms, each playing a crucial role in the maintenance of cellular function. The selective permeability of the plasma membrane allows for different methods of transport, some requiring energy and others occurring passively.

Active transport is a process where cells use ATP to move substances against their concentration gradient. Passive diffusion is the movement of substances from a region of higher to lower concentration without energy use. Facilitated diffusion involves carrier proteins to help substances move down their concentration gradient. Co-transport, or secondary active transport, uses the movement of one molecule to drive the transport of another. Lastly, endocytosis is a form of active transport where the cell membrane engulfs material to bring it into the cell.

These mechanisms ensure that essential nutrients, ions, and other substances can be absorbed, while waste products are secreted or removed, maintaining the necessary conditions for cellular survival and function.

Which endocrine gland is indicated by the arrow?

Answers

it is the thyroid gland 

What do fungi have in common with animals? their cells do not store dna within the nucleus. they are all unicellular. they are heterotrophs. they make their own food from sunlight?

Answers

Answer:

Option C, they are heterotrophs

Explanation:

Both fungi and animals do not have chlorophyll with in them and thus they are not able to produce their own food from sunlight. Being unable to produce their own food, both fungi and animal depends on other organisms especially the producer for their food and nourishment. Hence, they both are heterotrophs.  

Some of the animals are unicellular while there are several animals that are multi-cellular too. Hence option B is incorrect.

Also both fungi and animal have DNA with in their cells and hence option A is also incorrect.  

Option C is correct

Final answer:

Fungi and animals share several common characteristics. Both are heterotrophs that rely on external organic compounds for energy, and their cells share structural similarities such as the presence of chitin and the storage of carbohydrates as glycogen. Regardless, fungi also exhibit unique traits including their role as key decomposers in the ecosystem.

Explanation:

Fungi, much like animals, are heterotrophs; they obtain their energy and carbon from complex organic compounds as they are incapable of photosynthesis. This essentially means that their mode of nutrition involves consuming and breaking down organic matter rather than producing their own nutrients through sunlight like plants do.

Furthermore, parallels can be seen in the structure of their cells. The cell walls of fungi are composed of chitin, a substance also found in the exoskeletons of arthropods, while their cells contain mitochondria and other complex internal systems such as the endoplasmic reticulum and Golgi apparatus. Like animals, fungi store carbohydrates in the form of glycogen.

However, it's important to note that, despite these similarities, fungi also demonstrate distinct characteristics. For example, fungi absorb nutrients across the cell surface and play a crucial role as decomposers in the ecosystem, helping to recycle nutrients by breaking down organic materials into simple molecules.

Learn more about Fungi and Animals here:

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The triangular depression in the medial surface of each lung, where blood vessels and the primary bronchi enter, is the:

Answers

I believe the answer is hilum. Each lung can be divided into four main sections: the apex, base, root, and the hilus, or hilum of the lung. Hila or lung roots, are relatively complicated structures that consist mainly of the major bronchi and the pulmonary arteries and veins. The hilum of the lung is found on the medial aspect of each lung, and it is the only site of entrance or exit of structures associated with the lungs. That is both lungs have a region called hilum which serves as the point of attachment between the lung root and the lung.

What are the products of noncyclic photophosphorylation?

Answers

Oxygen, NADPH (Nicotinamide Dinucleotide Phosphate) and ATP (Adenosine Triphosphate) molecules.

NADP+ is the final electron acceptor for non-cyclic photophosphorylation, which forms NADPH after it accepts the electron in NADP Reductase.
Water or H2O is broken down into Hydrogen ions and Oxygen molecules.
Hydrogen ions or H+ are pumped through the thylakoid membrane against the concentration gradient. When H+ diffuses down concentration gradient out of thylakoid through ATP synthase (which is embedded in thylakoid member), ATP is synthesised.

Hope this helps! :)

In a plant cell, where are the atp synthase complexes located? select all that apply

Answers

Thylakoid membrane - I think so
Final answer:

In a plant cell, the ATP synthase complexes are primarily located in the inner mitochondrial membrane and the thylakoid membrane system of the chloroplasts.

Explanation:

In a plant cell, the ATP synthase complexes are located in two major areas: the inner mitochondrial membrane and the thylakoid membrane of chloroplasts. The inner mitochondrial membrane houses the electron transport chain that pumps H+ ions across this membrane. The H+ ions then flow back through the membrane by way of ATP synthase, which catalyzes the formation of ATP.

In chloroplasts, the thylakoid membrane system contains the green photosynthetic pigment chlorophyll, where the light reactions of photosynthesis occur. This system involves photosystems I and II, the electron transport chain, and ATP synthase, which is integral for the creation of ATP, the cell's energy currency.

Learn more about ATP synthase complexes here:

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A fossil skeleton with a basin-shaped pelvis, a central foramen magnum, and arched feet would most likely be classified as a(n) __________.

Answers

The answer is 'biped', i.e., an upright walking animal. The basin-shaped pelvis would support abdominal organs as well as mechanically assist locomotor and postural muscles. The whole at the bottom of a bipedal animal's skull through which the vertebral column attaches to the skull is called the foramen magnum. The arched feet of a biped are to support increased weight.

Answer:

These characteristics are observed in biped organisms

Explanation:

A biped organism is able to use two legs for walking. Bipedalism is an evolutionary adaptation produced by several skeletal changes shared in all bipedal species. The central foramen magnum, a short wide pelvis, and arched feet are factors that influence bipedalism, these features are required to achieve a better balance during the bipedal movement

Which type of force produces the fault in the illustration? A. compression B. tension C. shear D. skating

Answers

Which type of force produces the fault in the illustration? A. compression

Answer:

A. compression

Explanation:

I hope this helps

have a blessed day

Mutations are generally helpful to the organism.
a. True
b. False

Answers

they are not helpful 2 organisms
They are helpful because it’s kid of like adapting to their situation, a mutation gives the organism the anikty to stand or survive the situation they are in

socialization only happens within the family?
true
false

Answers

false is the right answer 

Derotative righting, labyrinthine righting, and parachute are all examples of:

Answers

Derotative righting, labyrinthine righting, and parachute are all examples of: postural reactions.

What is an antigen and antibody? and what are their difference(s)?

Answers

An antigen is a foreign particle that can create an immune response within a person’s body. They are also known by the term immunogenicity and can include pollen, viruses, bacteria, or chemicals.

Antibodies are also known as immunoglobulins and these proteins are created by the body. They work to fight against the antigens.

Antigens are typically divided into self and non-self-antigens. Self-antigens, like cancer cells, form within the body. Non-self-antigens come from outside the body. They stimulate your immune system to produce more antibodies, exemplifying the difference between antigen and antibody.

There are a total of 5 types of antibodies, each of which is different. They are IgA, IgE, IgG, IgM, and IgD.

 

IgA protects the surfaces of the body which receive exposure to foreign, outside substances.

 

IgE causes a reaction in the body against foreign substances, including animal dander, pollen, and fungus spores. These antibodies are part of allergic reactions to some poisons and certain medications. Those with allergies tend to have high quantities of this type of antibody.

 

IgG plays a key role in fighting infections of a bacterial or viral nature. These are the only antibodies that are able to cross the placenta of a pregnant woman, offering protection to the fetus while still in utero.

 

When an infection occurs, IgM antibodies are the very first type of antibodies to be made as a response. They will lead to other cells in the immune system destroying foreign substances.

 

Experts are still unclear as to what exactly IgD antibodies d


Which of the organelles in the animal cell is involved in the disposal of cellular waste that is not transported out of the cell?
A.
mitochondria
B.
nucleus
C.
endoplasmic reticulum
D.
lysosomes

Answers

Hello there!

Lysosomes would be the organism that would be in the animal cell is involved in the disposal of cellular waste that is not transported out of the cell. This is practically there role in the organism account. To be involved in the disposal of the cellular waste that would not be transported out of the cell would be known to be lysosomes.

Your correct answer would be the (last option).

A. mitochondria
B. nucleus
C. endoplasmic reticulum
D. lysosomes

I hope this helps you!

The most frequent way in which small regulatory rna molecules exert their effects is by the most frequent way in which small regulatory rna molecules exert their effects is by binding to a repressor and repressing enzyme transcription. signal transduction. base pairing with other rna molecules that have regions of complementary sequence. acting as an inducer that then binds to an activator protein to allow transcription to proceed.

Answers

For the answer to the question above, I believe the answer here is that you must base the pairing with the other RNA molecules that have regions of the complementary sequence.

I hope my answer helped you. Have a nice day!

1. What do bone marrow and the epidermis have in common? (1 point)
They are both sites of new cell formation.
They both contain structures that assist the body in cooling down if overheating
occurs.
They both contain or are associated with sensory neurons.
They are both involved in waste disposal functions.,

Answers

They are both sites of new cell formation. This is the character both have in common.Bone marrow is the site of formation of most cells of blood like RBC, WBC, Lymphocites etc. Epidermis is the outermost layer of skin which consists of dermis beneath. Epidermis on destruction produces new cells

Answer:

The correct answer would be They are both sites of new cell formation.

Bone marrow is the semi-solid tissue found in the cavities of the bone.

It serves as the site of production of blood cells.

Epidermis refers to the outermost layer of the skin. Stratum basale layer of the epidermis acts as the site of production of new epidermal skin cells.

How does the compressor lubrication system differ for reciprocating and centrifugal compressors?

Answers

In a centrifugal compressor, the refrigerant and the oil systems are separate. The oil is in a separate oil sump and the oil pump powered by a separate motor. On the other hand, the reciprocating compressor is powered by the compressor shaft.






Answer:

Both the reciprocating and centrifugal compressors are the parts of refrigeration and air conditioning technology. The lubrication is provided by the pressure lubrication system in the reciprocating compressor. This system utilizes pressurized oil for lubrication. While, on the other hand, the lubrication is attained by a three-phase fractional horsepower motor and oil pump in case of a centrifugal compressor.

Which of the following is not evidence for the law of conservation of mass during cellular respiration?

Answers


Answer is: cellular respiration creates an energy molecule when glucose is broken down.

Conservation of mass (mass is never lost or gained in chemical reactions), during chemical reaction no particles are created or
destroyed, the atoms are simply rearranged from the reactants to the
products.

The somatic nervous system contains nerves that control: skeletal muscles internal organs glands cardiac muscles

Answers

Out of the following choices;

A)           skeletal muscles

B)            internal organs, joints, and glands

C)            skeletal muscles, skin, and glands

D)           smooth muscles, cardiac muscles, and glands

The answer is A. This is because of the somatic nervous system control voluntary mechanisms of the body. The alternative is the autonomic nervous system that controls the involuntary mechanisms. The somatic nervous system comprises of the afferent neurons and efferent neurons.






The answer is: Skeletal muscles.

The somatic nervous system (SNS) or also known as the voluntary nervous system, controls the movement of voluntary muscles. The process of this movement is called reflex arc and this occurs in the skeletal muscles.

When we say voluntary movement, the body moves according to how you want to move it and the system responsible for this is the SNS. In contrast, involuntary movement is the movement that you cannot consciously control like the beating of the heart, breathing and digestive processes.   

(BRAINLY FOR CORRECT ANSWER, PLEASE HELP)
In cattle, a single gene with two alleles determines fur color. The fur can be red, white, or roan. Roan fur has both red and white hair. Which of the following is true about alleles for fur color in cattle?

The allele for roan fur color is dominant over red and white fur color.
The allele for red fur color is dominant over white and roan fur color.
The roan and white alleles are expressed independently of the other.
The red and white alleles are expressed independently of the other.

Answers

Final answer:

The answer states that the red and white alleles for fur color in cattle are expressed independently of each other, which is an example of codominance resulting in the roan phenotype.

Explanation:

The question is about the inheritance of fur color in cattle, which is determined by a single gene with two alleles. The correct answer to which of the statements is true about alleles for fur color in cattle is that 'the red and white alleles are expressed independently of the other'. This concept is known as codominance, where both alleles contribute to the phenotype. In the case of roan cattle, the presence of both red and white fur is due to the expression of both the red and white alleles independently, leading to patches of both colors in the fur.

The correct option is B i.e. The allele for red fur color is dominant over white and roan fur color.  

In cattle, fur color is determined by a single gene with two alleles: red (R) and white (R'). The fur can be red, white, or roan. Roan fur, which exhibits both red and white hairs, occurs in heterozygous cattle with the genotype RR'. This example illustrates codominance, where neither allele is completely dominant or recessive, and both traits are expressed simultaneously in the offspring.The statement "The red and white alleles are expressed independently of the other" is correct. This demonstrates that roan and white fur colors are codominantly expressed when both alleles are present, as seen in roan cattle with both red and white hairs.

Is examination of the back an organ or body area examimnation?

Answers

I believe it's the body area examination, since a 'back' isn't and organ

Hope this helpss

Mechanical digestion, the process of breaking down large chunks of food into smaller pieces, is important because smaller pieces of food ________. mechanical digestion, the process of breaking down large chunks of food into smaller pieces, is important because smaller pieces of food ________. are more easily stored in the stomach than are larger pieces of food are easier to excrete than are larger pieces of food do not taste as good as larger pieces of food have more surface area for chemical digestion than do larger pieces of food

Answers

This is because smaller pieces will have more surface area for chemical digestion than larger piece of food.
 
Foods are digested by a combination of two methods (mechanical and chemical. In mechanical digestion it brokes down physically the food into smaller pieces via chewing, churning and segmentation done in the intestine. In the mouth through mastication food is initially broken. In the stomach, the muscles in its walls squeeze and mix the food with digestive juices. In segmentation, contraction and relaxation of segments occur in the intestines.
It is important because smaller pieces of food have more surface area for chemical digestion than larger pieces of food do. Mechanical digestion begins in the mouth as the food is chewed, it is the physical breaking down the food by non-chemical means. In the mouth the specialized teeth break down the food as it is cut by the incisors, torn by the cuspids and ground by the molars. The food is then manipulated in the mouth by the tongue, and cheeks to mix and moisten the food forming a bolus or ball which is pushed to the back of the tongue, then swallowing takes place. 
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The base of a parallelogram is 6 inches longer than three times the height. The area of the parallelogram is 24 square inches. What is the height? Which of the following correctly compares fermentation and cellular respiration? Both provide ATP molecules, but only fermentation occurs when oxygen is present. Both result in substantial ATP molecules and lactic acid production. Cellular respiration produces more ATP molecules than fermentation. Cellular respiration provides ATP molecules at a slower rate than fermentation. An unlabeled hierarchical diagram of various astronomical bodies is shown below. The labels A, B, C and D can be used to represent the galaxy, Mars, universe, moon, and solar system.Part 1: Which four astronomical bodies would you choose to represent the four labels in the diagram?Part 2: Explain why the hierarchical level D is different from the rest. What is the theme of William Shakespeares Sonnet 116?Let me not to the marriage of true mindsAdmit impediments. Love is not loveWhich alters when it alteration finds,Or bends with the remover to remove:O, no! it is an ever-fixed mark,That looks on tempests and is never shaken;It is the star to every wandering bark,Whose worth's unknown, although his height be taken.Love's not Time's fool, though rosy lips and cheeksWithin his bending sickle's compass come;Love alters not with his brief hours and weeks,But bears it out even to the edge of doom.If this be error and upon me proved,I never writ, nor no man ever lovedA.) steadfastness of loveB.) immortality of artC.) power of time and natureD.) uncertainty of life helppppppppppppppppppppppppppppppppppp What is 48% of $430.00? (calculate the percent or value)I need answers! Feudalism began as A. a demand by the peasants for better living conditions and for a share in the economic prosperity of the Middle Ages. B. a way for the military to secure its power over the peasants and landowners. C. a means for the church to collect more taxes for its support of the nobility. D. a contract in which land was granted to the peasants in exchange for military service to the nobles. Sigma Notation: Need Help!! Problem 1:Evaluate the summation of 3 times negative 2 to the n minus 1 power, from n equals 1 to 5.Choices:A.-93B.-33C.33D.93, The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation of 2 ounces. refer to exhibit 6-5. what is the probability that a randomly selected item will weigh more than 10 ounces? The reaction 2a a2 was experimentally determined to be second order with a rate constant, k, equal to 0.0265 m1min1. if the initial concentration of a was 4.00 m, what was the concentration of a (in m) after 180.0 min? Use the given conditions to write and equation for the line in the indicates form:1. Passing through (2,5) and perpendicular to the line whose equation is -3x+y-6=0; slope-intercept form2. Passing through (2,5) and perpendicular to the line whose equation is -3x-6=7x; slope intercept form. I need help with this. Im feeling very uncomfortable with the answers. So, can someone please explain to me the correct steps if one of them are wrong? Florida and Montana are the only states the elderly relocate to t o f. What two effects did the ten boom's family practice of daily bible study and prayer have on their decision to assist the jews? they were open to his leading and were willing to do the lord's work. they realized germany's practice of persecuting the jews was going against god's teachings. they were indifferent to the suffering around them because they were "church people." they felt god's teachings included keeping jews and christians separate? this question is from "The Watsons go to Birmingham- 1963"Read the following quote from Byron to Kenny from Chapter 15.Today is the day you check out of the World-Famous Watson Pet Hospital. Dont let me catch you back there no more. You aint got no cause to be ashamed or scared or nothing. You smart enough to figure this one out yourself.What can the reader most likely conclude about Byrons point of view?He is sad about Kennys behavior.He wants Kenny to confront his fears.He is confused that Kenny is so upset. He believes Kenny needs to see a counseler, can someone help me with this problem please? Find the highest common factor of 10 and 15 PLS HELP IM USING UP THE LAST OF MY POINTS!! Which is the best prediction of how Mary will interact with Basil in the future?A)Mary will suddenly feel sorry for Basil and apologize to him.B)Mary and Basil will most likely fall in love with each other.C)Mary and Basil will become the best of friends and help each other.D)Mary and Basil will likely continue to be disagreeable and argue with each other. What does Basil do that makes Mary furious?A)He teases his sisters.B)He plays under a tree.C)He gives her a nickname.D)He tells her to build a rockery. Mary had liked to look at her mother from a distance and she had thought her very pretty, but as she knew very little of her she could scarcely have been expected to love her or to miss her very much when she was gone. She did not miss her at all, in fact, and as she was a self-absorbed child she gave her entire thought to herself, as she had always done. 2 If she had been older she would no doubt have been very anxious at being left alone in the world, but she was very young, and as she had always been taken care of, she supposed she always would be. What she thought was that she would like to know if she was going to nice people, who would be polite to her and give her her own way as her Ayah and the other native servants had done.3 She knew that she was not going to stay at the English clergyman's house where she was taken at first. She did not want to stay. The English clergyman was poor and he had five children nearly all the same age and they wore shabby clothes and were always quarreling and snatching toys from each other. Mary hated their untidy bungalow and was so disagreeable to them that after the first day or two nobody would play with her. By the second day they had given her a nickname which made her furious.4 It was Basil who thought of it first. Basil was a little boy with impudent blue eyes and a turned-up nose, and Mary hated him. She was playing by herself under a tree, just as she had been playing the day the cholera broke out. She was making heaps of earth and paths for a garden and Basil came and stood near to watch her. Presently he got rather interested and suddenly made a suggestion.5 "Why don't you put a heap of stones there and pretend it is a rockery?" he said. "There in the middle," and he leaned over her to point.6 "Go away!" cried Mary. "I don't want boys. Go away!"7 For a moment Basil looked angry, and then he began to tease. He was always teasing his sisters. He danced round and round her and made faces and sang and laughed.8 "Mistress Mary, quite contrary, How does your garden grow? With silver bells, and cockle shells, And marigolds all in a row."9 He sang it until the other children heard and laughed, too; and the crosser Mary got, the more they sang "Mistress Mary, quite contrary"; and after that as long as she stayed with them they called her "Mistress Mary Quite Contrary" when they spoke of her to each other, and often when they spoke to her. Which of these is a fruit drink?A. Platanos tentacion B.batido C.pastel tres leches D.patacon Which of the following is an example of situational irony?A.The shyest person in class is too nervous to give a speech in front of the school.B.A man plans a July picnic in the Mojave Desert, but it is spoiled by rain.C.A Boston school district cancels classes because of a snowstorm in mid-January.D.A popular band goes on tour, selling out each performance before you can buy a ticket.