When conducting an experiment, you need to have a question or a problem such as what is the cause of the disease. Then, you need to state a hypothesis to make a prediction, like the disease was caused by bacteria. You also need to define the variables involved in the experiment: independent -such as the infected blood used to inject chickens-, dependent -like the chickens response to the infected blood-. Then, according to the results -for instance, the experimental and the controlled groups were equally affected by the disease-, you can accept or reject your original hypothesis. During the experiment there will surge new questions to answer, and new hypothesis to test. In the exposed example, for instance, Dr. Eijkman can test his new hypothesis by injecting bacteria to a group of animals fed with wholegrain rice, and to another group of animals fed with polished rice.
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When conducting an experiment, there are different aspects to consider, such as the question that drives to the reseach, the hypothesis, theoretical framework, variables involved -independent, dependent, and controll-, methodology, study groups, data analisys, among others.
You need to consider,
• Definition and problem statement. The question for which there is not an answer yet.
• Hypothesis formulation. A hypothesis is a scientific conjecture, not verified, that requires corroboration.
• Data collection and analysis. This step involves testing the observations.
• Results
• Verification of hypothesis. This step involves the deriving of the working hypothesis.
• Discussion and Conclusion.
Available data:
Scientists thought that the beriberi disease might be caused by bacteriaA group of healthy chickens were injected with bacteria and became sickA group of chickens that were not injected with bacteria also got sickBefore the experiment, all the chickens had eaten wholegrain riceDuring the experiment, the chickens were fed polished ricePolished rice lacked thiamine, a vitamin necessary for good health1. The first question made was What is the real cause of the beriberi disease?
2. The original hypothesis was that the disease was caused by a bacteria, and if so, healthy chickens injected with infected blood, would also get the disease.
3. The manipulated or independent variable was the infected blood used to inject the chickens. The responding or dependent variable was the reaction or response of the chickens to the injected blood.
4. Results: Both, the experimental and the controlled group, were equally affected by the disease. Even when the controlled group was not injected with the affected blood, it got the disease too.
5. Dr. Eijkman new hypothesis is that chickens fed with polished rice will get sick because of the thiamine lack. He can test this new hypothesis by injecting bacteria to a group of animals that are being fed with wholegrain rice that has all the necessary vitamins, and injecting bacteria to another group of animals being fed with polished rice that lacks thiamine. If the new hypothesis is correct, the first wholegrain rice group should resist the bacteria attack, while the second polished rice group should get the disease.
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Related link: https://brainly.com/question/14368636?referrer=searchResults
Beri-beri is a disease resulting from a lack of vitamin B1 in the human body. This condition occurs, in particular, in people who eat mainly white rice (rice without shell) and some other types of grain crops. In modern society, the disease is rare due to the fact that a sufficient amount of vitamins comes from food.
Vitamin B1 contributes to the normal course of carbohydrate and fat metabolism. Its deficiency leads to the accumulation of pyruvic acid in the human blood and its increased concentration in the nervous system. The consequence of such a biochemical metabolic disorder is damage to the nervous system ("dry beriberi"), as well as damage to the cardiovascular system ("wet beriberi").
Learn more about this disease in https://brainly.com/question/6598846
Prince Burgers and Fries
Prince Burgers and Fries restaurant has created a new sauce that allegedly will reduce the production of body gas associated with eating its gourmet burgers. The manager at the restaurant, Sheila E., recruits 100 customers with a history of gas problems. She has 50 of them (Group A) eat gourmet burgers with the new sauce. The other 50 (Group B) eat gourmet burgers with sauce that looks just like the new sauce but is really just a mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the gourmet burgers, 30 customers in Group A reported having fewer gas problems and 8 customers in Group B reported having fewer gas problems.
A. Which people are in the control group?
B. What is the independent variable?
C. What is the dependent variable?
D. What should the restaurant’s conclusion be?
Answer:
A. Group B
B. Group A eats gourmet burgers with the new sauce and Group B eats gourmet burgers with sauce that looks just like the new sauce
Explanation:
C. Group A reported 30 customers having fewer gas problems and Group B reported 8 customers having fewer gas problems.
D. The new sauce works for some people
hope this help and pls mark brainiest
Select the best answer for the question.
A student conducts an experiment to see how music affects plant growth. The student obtains four identical
plants. Each one is potted in the same type of soil and receives the same amount of sunlight and water each
day. Plant A listens to classical music for three hours each day. Plant B listens to rock music for three hours
each day. Plant C listens to country music for three hours each day. Plant D does not listen to any music at
all.
1. In the experiment described in the scenario, what's the variable?
Answer:
A B and C because they all listen to music
Which of the following bonds is an attraction between atoms of different molecules?
Answer:
pretty sure its covalent bond
Explanation:
can there be justice when it comes to the environment and how
Answer:
Environmental justice is the fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income, with respect to the development, implementation, and enforcement of environmental laws, regulations, and policies.
Explanation:
Environmental justice issues and examples include inadequate access to healthy food, inadequate transportation, air and water pollution, and unsafe homes.
Hope it helps :)
Does anyone know this this animal is. my Francis is a praying mantis but I’m not sure
When nuclear fusion begins, what can be said about the internal processes within that star?
Atoms in the star begin to split.
Atoms in the star begin to combine.
The star is turned into a nebula.
The star is turned into a blue giant.
Hi there! Hopefully this helps!
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The answer to your question is the second sentence:
Atoms in the star begin to combine.
Answer:
Atoms in the star begin to combine.
Explanation:
how do photosynthesis start
Answer:
photosynthesis is the process plants use to make its food. plants absorb carbon dioxide from animals and turn it into carbon compounds to make glucose. photosynthesis is the basic process whereby carbon dioxide plus water is converted to glucose and oxygen
Because cells come from other cells,
larger organisms will have...
A. larger cells than smaller organism.
B. more cells than smaller organisms.
C. cells that reproduce more rapidly.
Answer:
B. more cells than smaller organisms
Explanation:
Animals and plants are multi-cellular eukaryotic creatures. Eukaryotes tend to be bigger than prokaryotes, but, more importantly, eukaryote means multiple cells, and prokaryote is one.
Is cutting a piece of DNA with a restriction enzyme depends upon the sequence of the DNA?
xam
Which of the following is
considered a producer?
A. algae
B. bacteria
C. deer
D. a cow
stion 6/48which would be the best evidence that a cell is using active transport to move a substance across its cell
membrane?
A) Substances are moving rapidly across the cell membrane.
B) ATP is being rapidly consumed near the cellular membrane.
C) Substances are moving from high to low concentrations.
D) Substances are moving through channels in the cell membrane.
Answer:
B) ATP is being rapidly consumed near the cellular membrane.
Explanation:
Active transport is a form of transport used by living systems in which substances/molecules move across a membrane from a region where they are less concentrated to a region where they are highly concentrated. This movement occurs against the concentration gradient, hence it requires energy in form of ATP in order to occur. The transport is said to be "ACTIVE" if it is energy consuming.
Hence, based on the explanation above, the best evidence to showcase the occurrence of active transport in a cell is the rapid consumption of ATP near the cellular membrane. ATP will be used to pump needed substances into the cell via the cell membrane, serving as the semi-permeable membrane.
Which feature is not the result of a glacier carving out rock as it moves?
A. Cirque
B. Terminal moraine
C. Fjord
D. Horn peak
Answer:
B. Terminal moraine
Explanation:
Terminal moraine forms at the end of a glacier due to contact abrasive action of the rocks. The glacier carving out rock as it moves doesn’t occur in the terminal moraine.
The Cirque, Horn peak and Fjord are all processes characterized by the glaciers carving out rocks as they are moved by elements such as wind and water.
The use of DNA in the process of classifying organisms is known as
Answer:
El campo de la genética implica el estudio de genes, segmentos de ADN que codifican rasgos, comportamientos u otras características específicas de los organismos.
Explanation:lo que dice ahi neta que si
Answer:
Taxonomy
Explanation:
Prior to being able to sequence DNA, organisms were described and categorized solely by their distinct morphologies (physical characteristics) and ecological roles. The ability to sequence DNA has revealed a great deal more about where an organism belongs taxonomically and helps pinpoint new species. DNA is now used alongside morphology and ecology to substantiate an organism’s distinctiveness in the biological world.
Describe the pathophysiology
Answer: pathophysiology , refers to the study of abnormal changes in body function that may causes some consequences, concomintan, disease of processes.hope it is useful to you.
Explanation:
Select the correct answer from the drop-down menu.
After getting the slide and microscope ready, Stella is eager to see the microscopic pond
water specimen! She crouches around her microscope and aligns her eye with the
microscope's eyepiece. But she's only able to see a bright white light.
At this point, no specimens or cells are visible on Stella's pond water slide. After taking a
moment to collect her thoughts, Stella realizes she can't see any lifeforms because
Answer:
the microscope is not in focus
Explanation:
Stella was only able to see white light through the eyepiece because the microscope is not in focus. She is supposed to bring the microscope into focus by using the coarse adjustment knob in conjunction with the fine adjustment knob. Both knobs are adjusted till the specimens or cells in the pond water present on the slide become visible through the microscope's eyepiece.
The graph shows how temperature relates to altitude. Which two statements are supported by the data in the graph?
Here, we can see in the given picture, The lowest temperature was observed in the Mesophere layer. The temperature is gradually decreasing from 0°C to -100°C(approx.) as the altitude increases. So we can say that,
Appropriate Answer:-The mesosphere tends to get colder at higher altitudes.
[tex] \Large{ \underline{ \boxed{ \bf{ \blue{ Option \: A}}}}}[/tex]
Rest options are not correct because of the wrong observation and reason provided which are matching to the predictions made from the picture.
━━━━━━━━━━━━━━━━━━━━
Answer:
The temperature in the thermosphere increases because the Sun’s ultraviolet and x-ray radiation are absorbed here.
Explanation:
This is the second statement that is supported by the literature, but cannot be seen via the graph, so make certain that you select this answer as well. The question requires that you select TWO statements supported by the graph data.
Identify the organelles in the cell to the right.
A
B
C
D
E
F
The organelles in a plant cell are labeled. Part A is a large hollow structure at the center of the cell. Part B is a leaf-shaped structure. Part C is the lining of the cell. Part D is made up of stacked circles. Part E is a network of membranous tubules. Part F is the outside of the cell.
Answer:
A - Vacuole
B- chloroplast
C- Plasma/cell membrane
D-Golgi apparatus
E-Endoplasmic Reticulum
F- Cell wall
Explanation:
How could the notion of maximum parsimony lead to an error in establishing an evolutionary relationship
Answer:
The notion of maximum parsimony does not consider the entire evolutionary history, being able to suppress important evolutionary points that would cause errors in the evolutionary relationship of a species.
Explanation:
Maximum parsimony is a criterion for optimizing phylogenetic trees. This is because through this criterion an analysis is made of all possible phylogenetic trees of a species, observing which one is smaller and offers simpler and summary information. On the one hand, the study of the smallest phylogenetic tree can be faster and more understandable, since its information is basic and direct. However, maximum parsimony can lead to errors in the establishment of an evolutionary relationship of a species, because it suppresses the entire history of evolution of that species, being able to suppress really important points in one of the clades, which would result in an incorrect evolutionary conclusion.
Most energy enters ecosystems in the form of sunlight,
Please select the best answer from the choices provided
T
F
Answer:
TRUE, most energy enters ecosystems in the form of sunlight
In order for a pea plant to show a recessive trait, what alleles must be present?
A. two dominant alleles
C. one dominant and one
recessive allele
B. two recessive alleles
D. none of the above
How does the disease affects the nervous system
Sweating when hot, shivering when cold, blinking when a bright light hits
one's eyes. These are examples of which characteristic of life?
organization
response to stimuli
growth and development
heredity (genes)
Answer:
I think it must be response to stimuli
Explanation:
Some receptors can detect several different stimuli but they are usually specialised to detect one type of stimulus: light - photoreceptors in the eye. ... touch, pressure, pain and temperature - different receptors in the skin. taste and smell - chemical receptors in the tongue and nose
Why Kiwi(Bird in NZ) doesn't fly?
Answer:
Their wings are vestigial, as the kiwi birds are descended from flying ancestors.
Explanation:
Their pectoral muscles are not anchored to the breast bone in a way that enables them to fly, and their wings are very small and underdeveloped meaning they wouldnt be able to gain lift with them.
You go on a trip to the Galapagos island to study the animals there for a paper you are writing on evolution, just like Darwin did. You spend 3 days taking notes on all the physical characteristics you can observe about the tortoises and then you spend 3 days observing the finches. What have you recorded? A. Inherited characteristics B. Environmental variation factors C. Phenotypes D. Genotypes
Answer:
C. Phenotypes
Explanation:
Taking notes on all the physical characteristics observed about the tortoises and then observing the finches, I have observed the phenotypes.
Phenotypes are the observable characteristics of a species which are the result of genetic expression influenced by the environmental factors.
So, phenotypes will be recorded during the trip while taking notes on all the physical characteristics which can be directly related to genotype and environmental factors.
Hence, the correct option is "C. phenotypes".
What kingdoms of life can have either sexual or asexual reproduction
Answer:
Protista, Fungi, and Plantae.
Explanation:
PROTISTA - asexually with binary fission , and sexually; two individuals join and exchange genetic material in the nucleus.
FUNGI - Reproduce sexually and asexually.
PLANTAE - Sexual reproduction involves the male pollen grains traveling to the stigma of a flower , and asexual reproduction involves the production of a new plant without the use of flowers.
Answer:
Plantae, protista, and fungi
Explanation:
took the test and got it right! Good luck and God bless you!
The first correct answer will be marked as brainliest
Answer:
the second red dot
Explanation:
Answer:
The upper right red circle.
Explanation:
This area is shows Minnesota to Lake Michigan, which is the largest body of water shown. The upper right red circle is the closest circle to Lake Michigan. As weather is deeply linked to weather systems, the area closest to a large body of water will experience the most devastating effects.
A person named X and Y doesn't have a 'D-cell' on her body.
and X and Y got married, and they bore a son called 'Z'.
then, could Z have a D-cell on his body?
What statement about enzymes and pH is true?
A Most enzymes require a very acidic environment to function well.
B Most enzymes require a very basic environment to function well.
C Enzymes are unaffected by changes in pH levels.
D Enzymes require a specific range of pH values to function.
Answer:
D. Enzymes require a specific range of pH values to function.
Explanation:
Enzymes function the best in a neutral pH, rather than in very acidic or basic environments.
Enzymes are very affected by changes in pH levels because they perform much better in neutral environments.
The lungs are
to the heart.
O Anterior
O Distal
Lateral
Superior
Answer:
LATERAL
Explanation:
The diaphragm lies inferior to the heart. Away from the mid line of the body. The lungs lie lateral to the heart. ... The heart lies medial to the lungs.
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PLS MARK BRAINLIEST
DESPERATELY TRYING TO LEVEL UP
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JUST A RANDOM GIRL WANTING TO HELP PEOPLE!
PEACE!
The cytoskeleton in a cell is responsible for which?
Answer:
C the specific shapes of bacteria
Explanation:
It is responsible for sustaining a cell's shape, for the locomotion of a cell, and for the movement of the various organelles within the cell itself. Besides the intracellular movement of organelles, the cytoskeleton is responsible for chromosome movement during cell division and for cytokinesis.