When you are exposed to bright light, cells in the retina detect the stimulus and send it to the brain for processing. The brain commands the iris to constrict and decrease pupil size.
The structure that serves as a receptor in this system is Retina
How can we see the object?Organisms adapted and evolved the eyes to see the surrounding environment. This ability to see begins when the visible wavelength of light enters the eye through a transparent covering called Cornea. The light enters the cornea and enters the inner of the eye through a round hole known as the pupil.
The light rays then enter the convex-shaped lens in the eye which focuses the beam of light on the back of the eye in the region of the tissue called the retina. The retina contains the photoreceptor cells-rods and cones in which the cone cells have the ability to detect three wavelengths of light especially blue, green and red which help us see various versions of the colour.
These cells convert light energy to chemical energy in the form of the action potential which gets transmitted to the part of the brain associated with the vision. This completes the pathway of the vision.
Thus, Retina is the answer.
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Which structures are involved in creating insulin inside pancreatic cells and to liver cells
Answer:
i have no idea ....................
Answer:
I think the answer is pancreatic islets4. One student designed an experiment with sugar, water, and sand. The steps of the experiment are shown below.
• Make a thumb size hole at the bottom of an 18 oz styrofoam cup.
• Roll a piece of paper into a tube and place it in the middle of the cup over the hole.
• Fill the tube with sugar and surround the tube with sand.
• Pull out the paper tube slowly from the cup and then dip the cup into a beaker of water.
• Watch the sugar cubes dissolve in water to form gaps in the sugar layer.
The student's experiment demonstrates the formation of (1 point)
wells
O geysers
Osprings
sinkholes
The student's experiment demonstrates the formation of sinkholes; option C
What are sinkholes?Sinkholes are holes which appear on the land surface as a result of gaps between layers of earth underneath the ground.
These holes could be as a result of erosion of land
The student's experiment demonstrates how holes are dissolution of the sugar cube occurs due to hole allowing water in.
Therefore, the student's experiment demonstrates the formation of sinkholes.
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Answer:
Sinkholes
Explanation:
19.8)What type of cell is illustrated here?
What part of the cell is #1?
What part of the cell is #2?
What part of the cell is #3?
What part of the cell is #4?
What part of the cell is #5?
Recall what you know about protein synthesis to answer the following questions.
RNA transfers the DNA code from the
DONE
of the cell to the
PLEASE HELP!
Answer:
RNA transfers the genetic
code from the nucleus of the cell to the cytoplasm of the cell.
Hope it helps!
One thing all mechanisms of evolution have in common is that ____________________.
They all lead to beneficial change in the population
They all lead to positive change in the population
They all lead to change in the population
They all lead to detrimental change in the population
Answer:
they lead to positive change in the population
The Atlantic puffin feeds on several species of Atlantic fish. A population of puffins living on Matinucus Rock was found to feed on the types of fish shown in the graph below. The beaks of this group of puffin are shaped to grasp Species A particularly well. Predict what would happen to the puffins’ beaks if another predator enters the area that is better at preying on Species A. Explain your reasoning based on what you know regarding genetic adaptations.
Answer:
The Puffins would have to find more food sources and the beaks would change accordingly to the food source they are going after.
Where the better adapted organisms survive to pass traits along to offspring.
A patient is being treated by her urologist for a fourth episode of kidney stones. Analysis of the stones shows that they are composed of calcium oxalate. The urologist orders an assay of which hormone?.
Answer:
Parathyroid hormone (PTH)
The urologist orders an assay of PTH hormone.
What is PTH hormone?Parathyroid glands release a hormone called parathyroid hormone (PTH) that regulates the amount of calcium in your blood. It also regulates the amounts of vitamin D and phosphorus.
Parathyroid hormone over- or under-production might result in symptoms linked to abnormal blood calcium levels.
Parathyroid glands produce and release a hormone called parathyroid hormone (PTH) to regulate the amount of calcium in your blood, not in your bones. One of the most crucial and prevalent minerals in your body is calcium.
Therefore, The urologist orders an assay of PTH hormone.
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what is the largest bone in the human body?
Answer:
Femur bone
Explanation:
Answer is femur bone
The ________ are the primary organs for filtration of the blood.
The primary organ used in the filtration of blood in the body is the kidney.
The kidney is a bean shaped organ that is about the size of a human fist. It is located at the bottom of the rib cage. There are two kidneys in the body, each kidney is located at each side of the spine in the body.
The kidney filters unwanted substances from the blood and pass them out of the body as urine. Blood is filtered in a part of the body known as glomerulus.
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1
4. How does energy move through your ecosystem? Think about the producers (plants)
and how energy moves from producers to other organisms. (3 points)
I
CE
Explanation:
There are several different factors that control the primary productivity of energy and biomass flow. Energy flow is the amount of energy that moves through a food chain. The energy input, or energy that enters the ecosystem, is measured in Joules or calories. Accordingly, the energy flow is also called calorific flow.
What results would be expected with no spontaneous generation of life
The results that would be expected with no spontaneous generation of life is no growth of microorganisms on the food particles.
What is spontaneous generation of life?The spontaneous generation of life was a idea which was used to explain the growth of microorganisms on food long ago die to the inability to see these organisms then.
Louis Pasteur by means of experiments proved this idea to be wrong. Life can only come from pre-existing life.
Therefore, the results that would be expected with no spontaneous generation of life is no growth of microorganisms on the food particles.
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Select the correct answer. while examining a specimen under the microscope, janet discovers a structure that has some genetic material that has rna but not dna. what is the specimen? a. virus b. plant c. fungi d. bacteria e. animal
Answer:
A. Virus
Explanation:
Viruses chose to store their data in RNA so that they can make changes as their hosts develop immunities.
The specimen is of virus. The correct option is A.
Thus, A virus is an infectious microorganism made up of a protein-coated segment of nucleic acid (either DNA or RNA).
A virus can't multiply by itself; it has to infect cells in order to utilise the host cell's components to make copies of itself. A virus frequently causes harm to the host organism by killing the host cell in the process.
Viruses can infect people. But in reality, viruses infect a wide variety of organisms. For example, there are viruses that infect fungi and viruses that infect bacteria.
Thus, The specimen is of virus. The correct option is A.
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Colorado has a vast population of lodgepole pines. A population of lodgepole pines has been killed in a section of the forest. What is a possible limiting factor of that population?
devastation by the pine bark beetle
Colorado’s long history of acidic soils
genetic variability
shallow root system
The possible limiting factor is the devastation by the pine bark beetle.
What is a limiting factor?A limiting factor is any factor that affects the size of a population of organisms which inhibits their growth or even existence.
The possible limiting factor of population of lodgepole pines is the devastation by the pine bark beetle.
This is so because only a section of the population was affected and not the whole.
If it was the Colorado’s long history of acidic soils, genetic variability and shallow root system, the whole population of lodgepole pines would have been affected.
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Answer:
a. devastation by the pine bark beetle
Explanation:
All cells contain a nucleus
true
false
[tex]\huge\sf{ANSWER}[/tex]
All cells contain a nucleus
FalseExplanation is in the pic
Hope it helps
Answer:
True.Explanation:
Why true?For me i say its true because :
All cells have three common organelles namely Cell membrane,cytoplasm and nucleus.Which event took place during the Copernican revolution, when most people started to believe in a heliocentric model of the solar system?
Aristotle developed his model of the solar system.
Copernicus rediscovered Aristarchus’s heliocentric model.
Kepler's laws of planetary motion.
Newton’s theories of gravity were dismissed and considered invalid.
Copernicus rediscovered Aristarchus's heliocentric model. Thus, option "B" is correct.
How, explain your answer?The event which took place during the Copernican revolution, when most people started to believe in the heliocentric model of the solar system was that Copernicus rediscovered Aristarchus’s heliocentric model.
Thus, option "B" is correct.
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Why was natural selection an important contribution to the theory of evolution?
OIt proved that evolution is true.
OIt explained how evolution works.
OIt summarized the process of evolution.
It highlighted the main points of evolution.
OIt summarized the process of evolution.
stegosaurus and ankylosaurus are united in a group called
Stegosaurus and ankylosaurus are united in a group called; Thyreophora
What is the name of the species group?Stegosaurus and ankylosaurus are united in a group called Thyreophora. They belong to that group because under the classification of dinosaurs, the Thyreophora consist mainly of Stegosauria which are commonly known as the plated dinosaurs and Ankylosauria which are commonly called the armored dinosaurs.
It should be noted that this group could also include their more basal relatives like Scutellosaurus and Scelidosaurus.
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____________ is an instrument or other device that puts pressure on tissue, usually to stop bleeding.
Tamponade is an instrument or other device that puts pressure on tissue, usually to stop bleedings.
What is bleeding?Bleeding is defined as the leakage of blood from a blood vessel due to trauma or sharp cut.
Tamponade is an instrument used by medical personnel to arrest bleeding. The word tamponade is known as blockage or closure.
Therefore, Tamponade is an instrument or other device that puts pressure on tissue, usually to stop bleedings.
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HELPP PLSSS, I WILL APPRECIATE EVERY SINGLE ANSWER
Write a reflection outlining what this tells you about Canada’s population density. What other information does this tell you
Answer:
With the findings of the 2016 Census count on population and dwellings, Statistics Canada gives Canadians a first look at the most recent national statistical snapshot.
The census counts 35,151,728 persons who said they lived in Canada on May 10, 2016, and displays population growth patterns across the country.
The organization will provide the complete spectrum of census data during the following year, as Canadians commemorate 150 years since Confederation, in order to portray a truthful picture of Canadians' lives and communities.
In 1871, the first census following Confederation recorded 3.5 million people in Canada, while the population figure in 2016 was ten times higher. When Canadians celebrated the 100th anniversary of Confederation in 1967, that number had risen to 20.0 million people (1966 Census).
Canadians have been making their way west for many years. The four founding provinces of Ontario, Quebec, New Brunswick, and Nova Scotia housed the majority of Canadians in 1871, whereas Western Canada was lightly populated. Manitoba, Saskatchewan, Alberta, and British Columbia accounted for over a third of the population in 2016.:
1. List four sensations detected by the tactile receptors in the skin in the spaces below:
The four sensations detected by the tactile receptors in the skin are touch, pressure and vibration and tickle.
What are the 4 sensations that the receptors found in the skin have?They are nerve endings formed by a branched axon. They are distributed in almost all parts of the body and capture mechanical (pressure), thermal (cold and heat) and especially painful sensations.
This is because Tactile sensations are the ones that detect touch, pressure, and vibration. About six different types of tactile receptors are known.
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Which is an example of a recent development used to address food
shortages in urban areas?
A.
B.
C.
Answer:
A
Explanation:
Select the correct location on the graph.
The graph shows the area of land deforested in a certain region each year from 1990 to 2004. Which bar on the graph corresponds to the year in
which human activity would have caused the greatest single-year change in biodiversity in the
region?
40,000
30,000
20,000
10,000
miles)
Area Deforested
(square
1990
1991
1992
1990
1991
1992
1993
1994
1996
1995
1997
1998
1999
Year
2001
2000
2002
2003
2004
Answer:
10,000
Explanation:
What topic level do herbivores occupy in a food chain
Answer:
herbivores are primary consumer, which means they occupy the second trophic level and eat producer
Alan lives in an area that has a huge park. Moreover, there is good quality of air and water in his region. What is the possible consequence of such conditions?
A.
premature deaths
B.
asthma
C.
cardiovascular diseases
D.
high life expectancy
Answer:
D. High Life Expectancy
Explanation:
Air pollution lowers life expectancy and causes tons of premature deaths in areas. The area that Alan lives in has good air quality which means that there is obviously going to be a increase in life expectancy. If water quality is bad in an area it can cause chronic illnesses (such as cancer), gastrointestinal illnesses, and even effect the nervous and reproductive systems in a bad way. So the fact there is good water quality in the region the area Alan lives in, he is pretty much guaranteed for higher life expectancy. Therefore the best answer is Option D.
Do You guys have summer school ?
Answer:
yes, we have summer school
Answer:
no, just extended school for some reason
Explanation:
i love school sm
wbu
Energy is needed to carry out all cellular processes. True Flase
Answer: true
Explanation: Inside every cell of all living things, energy is needed to carry out life processes. Energy is required to break down and build up molecules and to transport many molecules across plasma membranes.
hope this helps
Answer:
False
Explanation:
Not all cellular processes need energy in order to be carried out example .diffusion of particles across a cell membrane do not require energy .since diffusion is a passive form of transport(do not require energy).
What is a spring tide? When and why does it occur?
Answer:
Spring tides happen just after every full and new moon, when the sun, moon and earth are in line. That's when lunar and solar tides line up and reinforce each other, making a bigger total tide.
A spring tide occurs when there's a new or full moon. Because it follows the moon's lunar cycle, a spring tide happens twice per month. With the moon and sun roughly aligned the tides of Earth are on average slightly larger than usual.
source: https://ntslf.org › about-tides › tides
What are muscle fibres made of?
According to the research, muscle fibers can produce contraction and are made of myofibrils.
What are the muscle fibers?They are the fibers that are located inside the muscle, which in turn are composed of sarcolemma, mitochondria, myofibrils, nucleus and sarcoplasmic reticulum.
The myofibrils are responsible for giving it the elastic characteristic and are made up of actin and myosin that fulfill the function of generating the contraction process.
Therefore, we can conclude that according to the research, muscle fibers can produce contraction and are made of myofibrils.
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Which of the following is NOT true of the Wada test? Group of answer choices It entails the injection of amobarbital. It can be used to determine which hemisphere is language dominant. It determines the extent to which the corpus callosum has been resected. It is used before elective surgery for the treatment of epilepsy.
The option that isn't true of the Wada test is D. It is is used before elective surgery for the treatment of epilepsy.
What is Wada test?It should be noted that Wada test is used to evaluate how important each side of the brain is with respect to language and memory function.
In this case, the option that isn't true of the Wada test is that is is used before elective surgery for the treatment of epilepsy.
In conclusion, the correct option is D.
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