This would be an example of D. Founder Effect
A hypothesis is a ___.
Answer:
A hypothesis is a tentative/ preliminary statement of the relationship between two or more variables. It is a specific, testable prediction about what you expect to happen in a study.
Explanation:
In science, the hypothesis is an idea or explanation that you then experience/test through study and experimentation. Outside science, theory or guess can also be called a hypothesis. The hypothesis is nothing more than an unbridled, wild guess but less than a well-established theory.
So, we can conclude that The hypothesis is a simple statement that defines what you think the outcome of your experiment will be.
Hope this helps..
Good Luck!
Answer:A hypothesis is an explanation made on the basis of lack of evidence.
Explanation:
if a red blood cell has solute of concentration of 0.9%, what would be the solute concentration of an isotonic solution
Answer:
the answer is 0.7%
of concentration of an isotonic solution
What can be the bases for the division of a country
in federal structure?Give short introduction to each of them.
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! :)
If the surface area of a cell increases by a factor of 100, the volume of that cell will If the surface area of a cell increases by a factor of 100, the volume of that cell will decrease by a factor of 100. increase by a factor of 100. increase by a factor of 1000. remain the same. increase by a factor of 10.
Answer:
Increase by a factor of 1,000
Explanation:
As a cell increases in size, there is also a corresponding increase in the surface area and volume. It is however important to note that the volume increases faster than the surface area.
Since it was said that the surface area increased by a factor of 100 and knowing that volume increases factor, the increase in the factor of the volume must be higher than 100. The only option which has a higher factor is the increase by a factor of 1000 which is the right choice.
A mother has blood type A and her son has blood type 0. Which blood types are possible for the father?
o AB
оо
ОА
о в
Answer:
Blood types O, A, and B are possible for the father.
Explanation:
Since the mother has type A blood, there are two possible genotypes that she can have: AA or AO. Since her son has type O blood, he only has one genotype: OO.
For blood types,
Type A - AA or AO
Type AB - AB
Type B - BB or BO
Type O - OO
* A and B are dominant over O.
Now we have to do crosses between the mother and the father:
AA mother with AB father: child with type AA or type AB blood
AO mother with AB father: child with type AA, AO, AB, or BO blood
AA mother with OO father: child with AO blood
AO mother with OO father: child with AO or OO blood
AA mother with AA father: child with type AA blood
AA mother with AO father: child with type AA or AO blood
AO mother with AA father: child with type AA or AO blood
AO mother with AO father: child with type AA, AO, or OO blood
AA mother with BB father: child with type AB blood
AA mother with BO father: child with AB or AO blood
AO mother with BB father: child with AB or BO blood
AO mother with BO father: child with AB, AO, BO, or OO blood
The father can have blood types O, A, or B.
Hope this helps.
What enzyme is found in the mouth and the pancreas?
What are the three steps in the digestion of protein?
Why is the name of the ions produced in the pancreas? (help please)
Answer:
Mouth: Amylase
Pancreas: Pancreatic lipase, trypsin, Chymotrypsin.
2. Protein digestion starts in the mouth when the chewing process starts.
In the stomach, the hydrochloric acid and enzymes called proteases break it into chains of amino acids.
In the small intestine, a substance called BICARBONATE BUFFER then reduces the acidity of the digested food.
_______ is the involuntary movement of the muscles that move food through the digestive system.
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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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.
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.
Which is a structure that directs the cell's activities?
Answer:
It's the Nucleus.
what is the role of epidermis in plants
Answer:
Role of epidermis in plants :
1. Protection of the underlying cells and tissues.
2. Prevention of water loss.
3. Prevention of mechanical injury and invasion by parasite fungi.
4. Absorption of water.
5. Exchange of gases and transpiration through stomata.
Hope u understood!
#StayHomeStaySafe!
Pls mark me brainliest!!
Answer:
The outermost covering cells which covers steam, flowers, leaf fruit etc is called epidermis in plants.
some roles oh epidermis in plants are;
1. It protects most of the parts of plants from various injuries.
2. It also plays a major role in prevention of water loss in plants like; alovera,
3. In some plants it also stores food in them.
4. it helps in absorption of minerals.
hope it helps...
Write four questions about HIV/AIDS.
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:
A technologist decides to make a 1:20 dilution of cerebrospinal fluid (CSF) after briefly evaluating a portion of the sample microscopically. After making the dilution and charging the chambers, the number of cells that are observed in each of the large squares of the hemocytometer is >100. What should the technologist do to obtain the most accurate count
Answer:
The technologist needs to obtain a larger dilution.
Explanation:
A hemocytometer is a tool used in the laboratory for counting cells in suspension, it consists of a microscope slide that has a rectangular indentation that forms a chamber where the cells are stably maintained and counted.
The cerebrospinal fluid (CSF) is a liquid that is localized around the brain and spinal cord. Moreover, CSF analysis is a set of laboratory tests to measure the number of red and white blood cells.
The CSF tests are useful to detect different health problems that affect the central nervous system including, among others, infections in the brain (encephalitis, meningitis), inflammations, tumors, multiple sclerosis, etc.
In a CSF test, the number of white blood cells should be very low, and relatively high concentrations of such cells may be indicative of multiple sclerosis, encephalitis, leukemia, hemorrhage and allergy.
Any biology labs easy to do ? At home
If you by any chance cook something with a bone in it (like a thick chicken bone). Put it in vinegar for a few days and the acetic acid will essentially remove the calcium out of the bone and make it wiggle and jiggle and not be hard like a bone anymore. The longer you leave it the more it will wiggle!
Answer: Yes, Osmosis Potato Experiment
Question: How do different salt solutions affect osmosis?
Materials: Per group
12 pieces of potato cut in similar shapes and sizes.
4 cups
Balance
Spatula or spoon
Aluminum Foil to cover cups
Tongs
Paper towels
Sharpie Marker for labeling cups
Part 1: Finding mass
Label 4 cups separately:
Distilled Water
1% Salt Solution
3% Salt Solution
5% Salt Solution
Place the “Distilled Water” cup on the balance and press the “TARE” button.
Add 3 pieces of potato to the “Distilled” cup
Record the MASS in grams (g) in the Distilled “Initial Mass” column of the data table.
Remove the cup from the balance.
Measure out 100 ml of Distilled Water and pour into the cup.
Cover the cup with foil and set aside.
TARE the balance again to ZERO the mass.
Repeat steps 2-8 with the 1%, 3% and 5% cup
Write a hypothesis in the labeled section of the Osmosis Lab Report Template Preview the documentprovided or as directed by the teacher.
Refer to the conclusion section. Draw illustrations of each cup and its contents. Details of the illustration will be added later.
Part 2: Obtaining Results
After approximately 24 hours, use tongs to remove the “Distilled” pieces of potato from the labeled beaker.
Pour out the liquid from the cup into the sink or other specified container.
Take a piece of paper towel and carefully dry the inside of the cup.
Gently blot/dry the potato piece with a paper towel to remove excess water. DO NOT PRESS the potatoes.
Document how the potatoes feel at this time.
Place the empty "Distilled" cup on the balance and TARE.
Quickly place the potatoes in the cup and find the mass.
Record the mass in the FINAL MASS (g) column of the data table.
Record, in the NOTES section of your notebook, all observations of the texture, color and flexibility of the potatoes.
Calculate the percent change in mass (see example below) and enter into the provided data table.
Final mass of potatoes - Beginning mass of potatoes X 100
Beginning Mass
11. REPEAT STEPS 8 – 15 for the 1%, 3% and 5% salt solutions.
12. Graph your data.
PART 3: Illustrations and Conclusion
In the labeled spaces provided in the Osmosis Lab Report Template draw and label pictures to illustrate what happened during the experiment.
Use arrows to show the movement of water.
Use the following labels to indicate the state of the solution/liquid: hypertonic, hypotonic, and isotonic.
Write a conclusion which states whether your hypothesis was or was not supported in addition to citing data as support.
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
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 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
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 happened when you used a colored filter and a colored lightbulb?
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 :)
Which function does a neuron perform in a human body?
It generates electrochemical signals so that the body can react to stimuli.
It produces antibodies to destroy pathogens for protection purposes.
It breaks down chemical substances into a form that is usable by the body.
It delivers oxygen to the cells of the body for metabolic processes.
Answer:
It generates electrochemical signals so that the body can react to stimuli
Explanation:
A neuron performs the function of generating electrochemical signals so that the body can react to stimuli.
Answer:
Option A
Explanation:
Neuron generates electrochemical signals so that the body can react to stimuli. It sends nerve impulse to the brain so that we can sense things happening around us.
Describe how your skin feels when you are outside on a hot humid day.
Answer:
Evaporation of sweat off the skin is what actually makes our skin feel cooler, rather than temperature.
Explanation:
If you are outside on a hot and humid day, you are sweating because you are hot, but the sweat does not evaporate very well. This makes you feel more hot and also makes you have that "sticky" feeling. hope this helps you :)
Which of the following describes an in vitro experiment?
O A. Observations are made in a bacterium.
B. Observations are made in a mouse.
C. Observations are made in a plant.
D. Observations are made in a test tube.
Answer:
Observations are made in a test tube.
Observations are made in a test tube describes an in vitro experiment. So, the correct option is (D).
What is In vitro experiment?In vitro experiment are defined as experiments with microorganisms, cells or biological molecules that are outside their normal biological context. These are called "test-tube experiments" where studies in biology and its sub-disciplines are traditionally performed in labware such as test tubes, flasks, petri dishes, and microtiter plates.
These are relatively low cost experiments which save a lot of time. These are relative simplicity, species specificity, experimental control but are physically limited. Examples of in vitro experiments are organ-on-a-chip, micro physiological systems, cell-based screening, diagnostic tests.
Thus, Observations are made in a test tube describes an in vitro experiment. So, the correct option is (D).
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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
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:
Which is a type of cell that makes new bone tissue?
o
A. Cartilage
O B. Osteoblast
O C. Actin
O D. Myosin
Answer:
B. Osteoblast
Explanation:
Answer:
b
Explanation:
tectonic Mechanisms: Mastery Test
Which of the following is the best definition of DNA
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 is one of the six fundamental elements that are found in living organisms?
O helium
O sodium
O oxygen
chlorine
Answer:
Oxygen
Explanation:
Oxygen is one of the six fundamental elements in living organisms
Answer:
Oxygen is correct !!!!!!!Explanation:
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)
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
Select the correct answer from each drop-down menu. How might this factory affect the carbon and water cycle? The factory can affect the carbon cycle by releasing carbon dioxide into the atmosphere. Because carbon dioxide is a , it can trap the Sun’s heat in the atmosphere. Because the factory is made of concrete, it may deplete groundwater levels over time by not allowing water to .
Answer:
blank 1: greenhouse gas
blank 2: infiltrate
Explanation:
The carbon cycle is the continuous flow or the movement of the inorganic and organic carbon molecules and compounds in the atmosphere and various spheres of the planet.
Greenhouse gas and infiltrate is the correct blanks.
What is the role of carbon?Carbon dioxide is one of the components of the greenhouse gas responsible for global warming and the increase in the temperature of the planet. They majorly trap the heat from the sun and warms the planet's atmosphere.
Greenhouse gases like carbon dioxide, oxygen, nitrogen etc are responsible for maintaining the temperature of the planet and hence, plays a major role in global warming.
Therefore, greenhouse gas and infiltrate are the correct blanks.
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Which are parts of a seed
Answer:
The three primary parts of a seed are the embryo, endosperm, and seed coat.
Explanation:
The embryo is the young multicellular organism before it emerges from the seed. The endosperm is a source of stored food, consisting primarily of starches. The seed coat consists of one or more protective layers that encase the seed.
Hope this helps the answer is embryo, endosperm, and seed coat.
Answer: The three main parts of a seed are the endosperm, the embryo, and the seed coat.
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
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.
how many bones are in the adult human being
Answer:
I believe it is 206
Explanation:
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
Answer:
help the digestive system break down food quickly