Answers
Answer:
Mouth: Closed. Operculum: Opened. Floor of buccal cavity: Raised
Explanation:
When fish breathe out, the mouth closes and muscles raise the floor of the buccal cavity and push in the walls of the operculum. The opercula opens and water is pushed out over the gills' surface.
Hope this helps. :)
Related Questions
Which of the following is the best definition of DNA
Answers
Answer:
A.
Explanation:
Choice B is incorrect. That definition can be applied to both DNA and RNA, as they are both made of a nucleic acid, phosphate, sugar ring, and nucleotide base.
Choice C is incorrect. That would be the message strand made by RNA when they are transcribed.
Choice D is incorrect because it's absurd.
Answer:
A
Explanation:
Its the genetic code, nothing else would make sense
Which correctly lists the three parts of soil that are classified by their particle size? bedrock, humus, and clay clay, bedrock, and silt humus, sand, and clay sand, clay, and silt
Answers
Answer:
The correct option is;
Sand, clay, and silt
Explanation:
The categorization of soil particles by size can be made into three classes including sand (particle size between 0.05 mm to 2 mm), silt, (particle sizes between 0.002 mm to 0.05 mm) and clay (particle sizes lesser than 0.002 mm), larger particles such as stones, pebbles, boulders and rock other fragments are left out of the textural classification because of their inertness
The combination of the three particle sizes can be found in most soils and their relative proportion defines the texture of a given sample of soil.
Answer:sand clay and silt
Explanation:
_______ is the involuntary movement of the muscles that move food through the digestive system.
Answers
Answer:peristalsis
Explanation:
a wave like motion that occurs in the stomach to move food down
Peristalsis is the involuntary movement of the muscles that move food through the digestive system. The correct answer is peristalsis.
What is Peristalsis?
It is a coordinated, involuntary muscular movement that occurs in the walls of the digestive tract, specifically the esophagus, stomach, small intestine, and large intestine. It plays a crucial role in propelling food and liquids through the digestive system, allowing for the efficient processing and absorption of nutrients.The process of peristalsis begins when food is swallowed and enters the esophagus. The walls of the esophagus contain smooth muscle tissue that contracts and relaxes in a wave-like pattern. This contraction is initiated by the swallowing reflex, which is triggered by the act of swallowing.Peristaltic contractions in the small intestine help to propel the chyme along its length, allowing the absorption of nutrients from the intestinal walls.The rhythmic contractions help to move the waste material, also known as feces, toward the rectum.
Therefore, the answer is peristalsis.
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Help!! Which of these digestive organs is not part of the alimentary canal?
O A. The pancreas
O B. The esophagus
O C. The stomach
O D. The mouth
Answers
Answer:
The pancreas
Explanation:
The pancreas is not a part of the alimentary canal as it plays an important role in digestion and regulation of blood sugar. It is present in the abdominal region stretching from behind stomach to left upper abdomen near spleen.
The right option is a) pancreas as rest all are parts of alimentary canal but pancreas are a part of endocrine system.
HOPE IT HELPS!!!!!!
PLEASE MARK BRAINLIEST!!!!!
Which is a function of the spinal cord? A. It allows the back to be flexible and move at different angles. B. It helps the spine to provide structural support for the body. C. It transmits information between different parts of the nervous system. D. It produces hormones to send chemical signals throughout the bod
Answers
Answer:
c is the correct ans.
it transmits information between different parts of nervous system.
Answer:
C. It transmits information between different parts of the nervous system.
Explanation:
The nervous system has two parts, the central nervous system and the peripheral nervous system.
The central nervous system includes the brain, and the peripheral nervous system includes the spinal cord.
The spinal cord is a long, thin, tubular structure that consists of nervous tissue. The spinal cord extends between medulla oblongata in the brain to the lumbar region. It is protected by the spinal column made up of bones, called vertebrae.
One function of the spinal cord is to receive and transmit signals to the entire body and back to the brain.
The spinal cord recieves nerve impulses from the body and transmits it to the brain. It also receives orders in form of nerve impulses which are transported to receptors for response.
What is the function of radicle?
Answers
Answer:
The functions of radicle are
a. it emerge from a seed through the micropyle.
b. it allows to suck water and send to the leaves to start photosynthesis.
c. it helps the seed to grow.e.t.c.
Write four questions about HIV/AIDS.
Answers
Answer: what is cause of HIV?? What are the symptoms of HIV? Is HIV is reversable?? Which activities are most likely to transmit HIV??
Explanation:
Kala added a spoon of yeast and hot boiling water to knead bread dough, whereas Rupa added warm water to knead the dough with yeast in it. Both of them made bread. Whose bread will be soft? Why?
Answers
Answer:
I think Rupa's bread will come out softer than Kala's.
Explanation:
Using hot boiling water to activate yeast can kill it. Instead of being absorbed by the protein, the hot water is absorbed into the starch molecules.
It is better to use warm water to get a more fluffy bread.
Soft bread is soft because CO2 produced by yeast and water that gets turned to steam by the baking process gets trapped into pockets by a mesh of gluten, causing the dough to expand. The dough then solidifies, keeping its shape. If your bread is not soft then it hasn't expanded enough for one or more reasons.
Have a good day and stay safe!
A wolf kills a deer that is infected with ________ of Echinococcus granulosis in its liver and eats it. After consuming the deer, the wolf's intestine becomes filled with a number of ________ produced from scoleces. These eventually release eggs into the wolf's intestines, which are released in its feces.
Answers
Answer:
The deer is infected with the parasite taenia Echinococcus granulosis, which is in the development stage of the fertile hydatid cyst. The wolf's intestine becomes filled with adult parasites, that eventually release eggs from their proglottids.Explanation: Echinococcus granulosis biological cycle.
The adult form of the parasite Echinococcus granulosis inhabits the intestines of canids, such as the dog or in the wolves, as in the exposed example. They might be 2 to 7 millimeters long, and in their anterior extreme, there is a segment known as scolex or head. The invertebrate attaches to the intestine wall by using its scolex. In the posterior extreme, there are the fertile segments of the animal, formed by three or four proglottids. The proglottides, carry the eggs and release them in the canid´s intestine. These eggs can get out of the animal´s body when it defecates. The parasite´s eggs are now in the feces of the canid.
Once on the ground or in the water, these eggs might be ingested by an intermediate host. In general, these hosts are animals such as sheep, goats, horses, pigs, and even humans. In the exposed example, the intermediate host is the deer.
The eclosion of the parasite´s eggs occurs in the thin intestine of their host, during digestion. The invertebrate penetrates the intestinal wall, from where it migrates to other organs, especially the liver and the lungs. At this point, the organism known as the oncosphere, turn into hydatid cysts. In its interior, it starts the protoscolex formation, making the size of the cyst to get bigger. When the protoscolex is completely formed, the fertile cyst is now infectious to the final host.
The final host (wolves) becomes infected when it feeds on the intermediate host. After ingestion, protoscolex gets released in the interior of the duodene. Their free state is known as scolex. At a certain point, scolex gets attached to the intestine wall where they stay until they become adults. And the cycle starts again.
Mechanical digestion works to:
OOO
physically break apart food.
increase the surface area of food in the digestive system,
help the digestive system break down food quickly.
All of the choices are correct
Answers
Answer:
help the digestive system break down food quickly
CAN ANYONE PLEASE ANSWER?
What is photosynthesis.
Answers
Answer:
Photosynthesis:
Photosynthesis is the synthesis of food(glucose) from water and carbon dioxide in the presence of sunlight and chlorophyll.
Chemical Reaction:
6H₂O + 6CO₂ => C₆H₁₂O₆ + 6O₂ (balanced)
Answer:
The process of making food in the leaves with the help of water and carbon dioxide in the presence of sunlight and chlorophyll is called photosynthesis.
Significance of Photosynthesis:
It is the important source of energy for all living organisms- both producers and consumers.It is essential for sustaining life.It helps in the growth and development of plants.It is necessary for the synthesis of many organic compounds used by humans and other animals.It converts atmospheric CO2 back to oxygen.Hope this helps....
Good luck on your assignment...
give any three difference between manure and fertilizers
please give me the photos of this question
Answers
Answer:1)Manure is made up of natural substance to improve plant growth like animal droppings while fertilizers are made up of chemicals and some unknown substances to improve plant growth. 2)Manure are insoluble or does not dissolve in water but fertilizers are soluble and dissolve in water. 3)Manure is not that rich in plant nutrients but fertilizer is very rich in plant nutrients.
Explanation:
Why is fermentation less effective than respiration?
Answers
Answer:
Fermentation is less effective because it does not have the capacity to completely break down the glucose molecule and therefore can only contribute to the production of two ATP molecules (via glycolysis), as opposed to the 36 produced during aerobic respiration
Explanation:
What are the 3 kinds of helpful social behavior?
Answers
Explanation:
Social interactions include a large number of behaviors, so many that in sociology, interaction is usually divided into five categories. These are: exchange, competition, cooperation, conflict and coercion.
Social behaviors are the conducts that affect other person or ownself. Cooperative, mutualistic, and satisfactory or polite social behavior is helpful to others.
What is social behavior?Social behavior is the activities and conducts that are affected by various factors and also affects numerous factors. It is defined by the presence of the interaction between the community.
A cooperative social behavior allows the person to be able to collectively work with society and leads to harmony. Mutualistic behavior allows the person to rely on others and can help them in a needful situation.
In addition, satisfactory or polite social behavior allows the person to be kind so that they can help the community. It reflects the person's ability to have social communication.
Therefore, cooperative, mutualistic, and satisfactory or polite are helpful social behavior.
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What happens in a young tuna’s life cycle?
Answers
Answer:
He is born he eats some he gains weight he realizes he may have an eating disorder he becomes depressed he becomes very obese and overweight he has very high cholesterol and type 2 diabetes he finally is struck with a major heart attack that kills him in front of his loyal wife of 40 years.
Explanation:
name any 7 types of food please answer it is very urgent to me
Answers
Answer:
vegetablessea food beanspulsesriceshellfishnutssalmonsmeat(beef and mutton)chickenfruitsExplanation:
i hope this will help you :)
Which of the following is NOT one of the three global wind patterns?
A. Polar Easterlies
B. Westerlies
C. Trade Winds
D. Interglacial Winds
Answers
Answer:
I believe that the correct answer is d. Interglacial Winds
Explanation:
Please mark as brainiest ! Hope this helps!
Polar Easterlies, Westerlies and trade winds are the three main global wind patterns. Interglacial winds are not a type of global wind patterns. Thus, the correct option is D.
What are global wind patterns?Global Wind Patterns is mainly the result of a thermodynamic principle and the Coriolis effect due to the counterclockwise rotation of the planet earth. Warm air around the equator is lifted that creates a suction effect for air masses coming from different latitudes.
The three important global wind belts are polar easterlies, westerlies, and trade winds. The polar easterlies flow from the north and south poles towards 60° north and south, respectively. They are very cold and dry winds. The westerlies are present between 30° and 60° north and south of the Equator.
Therefore, the correct option is D.
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What happened when you used a colored filter and a colored lightbulb?
Answers
Answer:
A filter is a transparent material that absorbs some colors and allows others to pass through. ... A yellow color filter will let through only yellow and absorb all other colors. So when blue light is allowed through a blue filter onto a blue object, the object will still reflect blue and therefore appear blue.
Answer:
The person in the simulation could see the colored light only if it passed through a filter of the same color. This filtering of color occurred because the filter absorbs the other colors. The filter lets light that’s the same color as the filter pass through, allowing the person to see that color.
Explanation: I hope this helped you alot :)
A neuromuscular junction is a junction between a_________ and a ___________. A neuromuscular junction is a junction between a_________ and a ___________. dendrite of an axon; skeletal muscle fiber bulbous end of axon; skeletal muscle fiber sarcoplasm; T-tubule dendrite of an axon; myofibril bulbous end of axon; cell body of axon
Answers
Answer:
myofibril bulbous end of axon and skeletal muscles fibres.
Explanation:o
It represents the chemical synapse of the axon bulbous ends of the motor neuron ( motor end plate) and the skeletal Muscle fibres.
The influx of calcium ions into the bulbous ends leads to the fusion and empty of the vesicles containing neurotransmitters into the synaptic cleft.
The Neurotransmitters binds to the receptors on the muscles membrane to allow the transmission of action potential ( PSIP or PSEP)across the synaptic gap to the muscles fibers to initiate their contraction or relaxation.
Eukaryotic secondary plastids are the result of an endosymbiotic event that involved (blank) as endosymbionts. Since this original endosymbiotic event, some DNA may have been exchanged between the two symbiotic partners in a process called (blank)
Answers
Answer:
The correct answer is - Cyanobacteria; Horizontal gene transfer
Explanation:
According to the endosymbiotic theory it is believed that the eukaryotic plastids (mitochondria and chloroplasts) have developed from symbiotic bacteria, such as cyanobacteria and alpha-proteobacteria.
During this symbiotic process, some genetic material may have been move in between the symbiotic counterparts in a process called Horizontal gene transfer or lateral gene transfer.
thus, the correct answer- Cyanobacteria; Horizontal gene transfer
Earth has seasons because of changes in Select one: a. its distance from the sun. b. the direction its axis tilts. c. the angle at which its axis tilts. d. its direction of rotation on its axis. Clear my choice
Answers
how dose the nervous system help the body maintain homeostasis
Answers
Answer:
The nervous system helps the body to maintain homeostasis by controlling and regulating the other parts of the body.
Which is a type of cell that makes new bone tissue?
o
A. Cartilage
O B. Osteoblast
O C. Actin
O D. Myosin
Answers
Answer:
B. Osteoblast
Explanation:
Answer:
b
Explanation:
Which of the following describes the structure of an amino acid? A. Small molecules consisting of a phosphate group, a sugar, and a nucleotide base B. A long chain of carbon atoms connected to oxygen and hydrogen atoms C. A long chain of protein molecules D. Small molecules consisting of an amino group, a carboxyl group, and a side chain
Answers
Answer:
i think option d is the answer.
The small molecules consisting of an amino group, a carboxyl group, and a side chain describes the structure of an amino acid.
What are the functions of amino acids?Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although over 500 amino acids exist in nature, by far the most important are the alpha-amino acids, from which proteins are composed.
Amino acids function as the building blocks of proteins. Proteins catalyze the vast majority of chemical reactions that occur in the cell. They provide many of the structural elements of a cell, and they help to bind cells together into tissues.
Amino acids connect to form peptide bonds through a reaction between the amino group and the carboxyl group. The amino functional group is therefore critical to building all the proteins that makeup life on earth.
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Which is a structure that directs the cell's activities?
Answers
Answer:
It's the Nucleus.
What can be the bases for the division of a country
in federal structure?Give short introduction to each of them.
Answers
Answer:
he topography of Nepal is quiet diverse. We have himalayas, hills and the terai. So topography, ethinicity, resources,language had been the bases of division of a country of the federal sturucture.
Explanation:
i hope this helps! :)
1. Completa cada uno de los enunciados utilizando cada uno de los conceptos del recuadro. palabras para completar:Aeróbica, Fermentación, ATP, Anaeróbica, Respiración. Por medio de la _____________________ los seres vivos transforman la energía contenida en los nutrientes en energía útil o ____________________ y así llevar a cabo sus funciones vitales. En la respiración celular _____________________ se obtiene energía en presencia de oxígeno. En la respiración celular _____________________ se obtiene energía en presencia de minerales, como de nitrilos y sulfatos. En la respiración celular _____________________ se obtiene energía en ausencia de oxígeno y se utiliza para productos lácteos.
Answers
Answer:
1. respiración
2. ATP
3. aeróbico
4. fermentación
5. respiración anaeróbica
Explicación:
La energía se produce en forma de trifosfato de adenina por la descomposición de moléculas de alimentos como la glucosa, etc. en un proceso de respiración. Hay dos tipos de respiración i. mi. respiración aeróbica y anaeróbica. En la respiración aeróbica, se produce más ATP en presencia de la molécula de oxígeno, mientras que en la respiración anaeróbica, se produce menos ATP cuando no hay oxígeno. La respiración es el proceso que ayuda a la disponibilidad de oxígeno para la producción de energía.
Which is one of the six fundamental elements that are found in living organisms?
O helium
O sodium
O oxygen
chlorine
Answers
Answer:
Oxygen
Explanation:
Oxygen is one of the six fundamental elements in living organisms
Answer:
Oxygen is correct !!!!!!!Explanation:
What species of turtle is this found him in my front yard, I live in Florida near Orlando if that helps
Answers
Answer:
Box Turtle
Explanation:
Answer:Florida soft shell turtle with the specie name Apalone ferox.
Explanation:
Which statement best describes a dominant allele
Answers
Answer:
B The version of the trait that is expressed over other alleles for the same trait I believe