Answers
Answer:
16. Control group: Subject A
17. Independent (manipulated) variable: Type of powder
18. Dependent variable: Itching time
19. Explain whether the data supports the advertisement´s claims about its product. Yes, it does.
Explanation:
Control group: The control group is used to identify if there are any other factors influencing the results obtained by the treatment in the study (in this case, the new product), from the results that might be a consequence of other factors. The control group must be selected from the same population as the treatment group. Data from an experimental group are compared with the data from a control group. These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.The experimental group is the one that receives the experimental procedure, with changes in the independent variable. There can be several experimental groups. In this case, the experimental group is subject B.
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, the type of powder is the independent variable. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, inching time is the dependent variable, that depends on the type of powder used. The data does support the advertisement´s claims about its product. The effect of the new product lasts 50% more than the original product. The old powder produced itching for 30 minutes, while the new product produced itching for 45min (15 more minutes, 50% more).Related Questions
what is the effect of glucagon?
Answers
Reflecting telescopes use mirrors as well as lenses.
Please select the best answer from the choices provided
T
F
Answers
Answer: true
Explanation:
what is the funtion of tRNA?
-to code for protein synthesis
-to carry the synthesized genetic information from the nucleus to the ribosomes
-to synthesize protines from RNA
-to bring amino acids to the ribosomes to be assembled into proteins
Answers
Answer:
To bring amino acids to the ribosomes to be assembled into proteins
Explanation:
Transfer RNA or tRNA is a ribonucleoprotein which serves the purpose of chaperoning amino acids from the cytoplasm of the cell to the site of protein synthesis.
Answer:
D. to bring amino acids to the ribosomes to be assembled into proteins
Explanation:
The sugars are the plants _________ . Oxygen is made as a _________ product
Answers
Answer:
energy
waste product
Explanation:
Answer:
(1) The sugars are the plants nutrients. (2) Oxygen is made as a waste product.
Explanation:
Hope this helped! ^^
Which diagram most correctly represents the process of mitosis?
Answers
Answer:
B
Explanation:
Division of 2 identity.
Chloroplasts and Mitochondria are two organelles that are largely
responsible for the cycling of carbon through the ecosystems. What are
their functions?
Answers
Function for Chloroplast - In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
what animals eat leafy sea dragons? also want to do leafy sea dragons eat?
Answers
(1) In the wild, young sea dragons are preyed upon by other fish, crustaceans and even sea anemones.
(2) Leafy seadragons eat small, plankton crustaceans.
How may mRNA be modified before it leaves the nucleus?
Answers
Answer:
The pre-mRNA molecules undergo three main modifications. These modifications are 5' capping 3' polyadenylation and RNA splicing which occur in the nucleus before RNA is translated.
Explanation:
mRNA compares to the hereditary succession of quality, and is perused by a ribosome during the time spent combining a protein.
How mRNA can be modified?it should go through extra handling before it leaves the core. This might incorporate joining, altering, and polyadenylation. These cycles adjust the mRNA in different ways. Such alterations permit a solitary quality to be utilized to make more than one protein. Exons are segments of mRNA which become "communicated" or converted into a protein. They are the coding bits of a mRNA atom.
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For which reasons would a male peacock spread his
tail feathers? Check all that apply.
to cool off his body
to attract a peahen
to show that he is healthy
to protect his peachicks
to intimidate rival males
O to run from a predator
Answers
Answer:
to intimidate his predators
Explanation:
The reasons would a male peacock spread his tail feathers to intimidate rival males. Thus, option E is correct.
What are the principles of natural selection?For natural selection to occur, four basic conditions are necessary:
Reproduction: organisms must reproduce to form new generations;Variability: there must be differences between individuals in the population;Heredity: Descendants must inherit characteristics from their parents.Natural selection has been known as the evolutionary mechanism proposed by Charles Darwin, who stated that the environment acts as a selector of characteristics, perpetuating the organisms best able to survive in a given place.
Genes that encode bright feathers give an advantage to the male peacocks over other males which do not have an equally bright assortment of feathers, increasing the individual's reproductive success. This results in the advantageous genes such as of bright feathers recurring over the generations and remaining a part of the gene pool.
Therefore, The reasons would a male peacock spread his tail feathers to intimidate rival males. Thus, option E is correct.
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Which part of the digestive system does earthworm not have?
Answers
Answer:
stomach
Explanation:
Digestion occurs mostly in the intestine and the digested food is absorbed by villi. Then pass into blood stream through capillaries. Undigested food and the soil are released out in the form of casting through anus.
What do you call a process in which cells and organisms produce other cells and organisms of the same kind
A. reproduction
B. oxidation
C. respiration
D. perspiration
Answers
Answer:
A. reproduction
Explanation:
X- it's not oxidation because oxidation is just a reaction in which atoms of an element lose electrons
X- it's not respiration because it's literally just taking a breath; breathing
X- it's not perspiration because perspiration is just sweating
✔- reproduction is making copies of the same kind.
¹ex.
fish + fish = another fish with both genetics from mom and dad, looking like a copy of them
Sea otters regulate the presence of the sea urchins and thus, kelp is regulated for all organisms in the ecosystem. They help to keep enough kelp for other wildlife to feed on. Also, due to their ability to absorb carbon dioxide, the kelp aid in mitigating climatic change and also reduce erosion by reducing the speed of water at the coast.However, if there were too many sea urchins and no sea otter to regulate their production, the kelp would reduce and thus with no food in the ecosystem, it would collapse. As a result, the sea otter protects the kelp forests by checking the local sea urchin population. The sea otter is an example of a
Answers
Answer:
keystone species
Explanation:
The sea otter is an example of a keystone species in the scenario.
A keystone species is an organism that has a significant influence on the functioning of the entire ecosystem. Without this species, the ecosystem would either cease to exist in total or entirely different in structure. In other words, a keystone species is a fastener that holds the ecosystem together.
In this case, the sea otter indirectly regulates kelp for all organisms in the ecosystem by directly regulating the presence of sea urchins. Without kelps, several ecosystem functions such as climate change mitigation and erosion reduction would cease. Thus, the sea otter is playing a significant role as a keystone species.
How are the carbon and oxygen cycles interconnected?
A. The carbon dioxide produced during photosynthesis is used during respiration to produce oxygen.
B. The carbon on the surface of the Earth combines with oxygen in the air to form the water in the ocean.
C. The oxygen produced during photosynthesis is used during respiration to produce carbon dioxide.
D. The oxygen produced during photosynthesis becomes a component of water in the atmosphere.
Answers
Answer:
A.
Explanation:
Because carbon dioxide produce energy and releases oxygen
The oxygen and carbon cycles are interconnected as both produced or recycled by the living organisms as option C. The oxygen produced during photosynthesis is used during respiration to produce carbon dioxide.
Oxygen and carbon are moves between the atmosphere, biosphere, and lithosphere but the most important part is movement between the biosphere and atmosphere:
In the biosphere, carbon dioxide is used as a reactant to produce oxygen that moves to the atmosphere by the process called photosynthesis in plants.During cellular respiration atmospheric oxygen is used by the living organism to produce energy and releases carbon dioxide as a byproduct.On the basis of the given explanation, the correct answer would be - Option C.
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4. Which human activity would (NOT) be classified as one that can harm
water source?*
O A. water pollution
B. waste of water resources
C. using sustainable ways to grow crops
Answers
what are the 10 branches of biology?
Answers
Answer:
Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology.
Glycerol + ___Fatty Acid Molecules Fat + ___Water Molecules 15. Fill in the missing labels indicating the number of fatty acid molecules and water molecules needed to complete the above equation.
Answers
Answer:
Test
Explanation:
TEst
PLS ANSSWER
A group of plant eating animals moves far away from their original population. In the new environment, the only edible vegetation grows at the top of tall trees. In order to survive, the animals need a new adaptation. Which of the following variations would be the most useful new adaptation to members of the group?
A) Wider, flatter teeth that can chew and grind plant material.
B) A longer neck to reach the vegetation that is high up in the trees.
C) A better digestive system for breaking down plant material.
D) Larger ears and eyes located on sides of head to detect predators.
Answers
Answer:
B
Explanation:
The others would not help because the animals could not reach the vegetation.
Which elements make up the the following compounds?
1. Salt
2. Baking Soda
3. Water
4. Hydrogen Peroxide
Answers
Answer:
The element of salt is sodium. The elements of baking soda also called sodium bicarbonate are carbon,sodium,hydrogen and oxygen. The element of water is hydrogen and oxygen. The elements of hydrogen peroxide are hydrogen and oxygen same as water. Hope this helped!!
Explanation:
I am an A+ student in chemistry. So i know its right ;)
Studying____
we infer how Pangea split into continents
Answers
Answer:
Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle.
Explanation:
Answer: Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle.
Explanation: Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle. About 200 million years ago Pangaea broke into two new continents Laurasia and Gondwanaland.
What materials are needed for photosynthesis to occur?
Answers
Answer:
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight
Explanation:
I hope this helps :)
(Urgent please answer!!) What molecule holds the code for controlling what a cell does
Answers
I believe it's DNA, or deoxyribonucleic acid.
An archer shot a 0.06 kg arrow at a target the arrow accelerated at 5,000 m/s squared to reach a speed of 50.0 m/s as it is left the bow.During this acceleration what was the net force to the nearest newton?
Answers
Answer:
the net force to the nearest newton is 300 N
Explanation:
The computation of the net force to the nearest newton is shown below:
According to the newton second law of motion, the force is proportional directly to the change rate in momentum
So,
Resulted force = mass × acceleration
F = 0.06 kg × 5,000 m/s
= 300 N
Hence, the net force to the nearest newton is 300 N
Answer:
300 N
Explanation:
which of the following is not true about plants?
Answers
Answer:
What are the options
Explanation:
What role did the detergent play when added to the strawberry solution?
Answers
Answer:
when added the salt and detergent mixture to the smashed strawberries, the detergent helped lyse (pop open) the strawberry cells, releasing the DNA strands could gather and clump,making it easier for you to see them.
When a new strain of virus is discovered, what must scientist first do to prevent the spread
Answers
-identify the symptoms that people develop due to the strain
-work on an effective vaccine to help prevent the spread of the virus
PLEASE HELP BEING TIMED Which is one piece of information that fossils in samples from Earth's crust reveal about Earth's history?
A. Changes in climate
B. Number if species at the specific time
C. Composition of Earth's core
D. Age of organisms when they died
Answers
Answer: changes in climate
Change in climate information that fossils in samples from Earth's crust reveal about Earth's history. So, the correct option is (A).
What are Fossils?A fossil is defined as the preserved remains, impression, or trace of a once-living thing from a past geological age, including bones, shells, exoskeletons, fossilized traces of animals or microbes, amber, hair, petrified wood, and DNA. The totality of fossils is known as the fossil record.
There are five types of fossils which are as follows:
Body FossilsMolecular FossilsTrace FossilsCarbon FossilsPseudo fossilsThe fossil record shows that the types of living things on Earth changed over time which reveals the Earth's history.
Thus, change in climate information that fossils in samples from Earth's crust reveal about Earth's history. So, the correct option is (A).
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Which of the following is one of the chemical building blocks of cells? a. water c. air b. food d. carbohydrates
Answers
Answer:
d. carbohydrates.
Explanation:
Sugar-consisting molecules. As a source of energy and energy storage cells employ carbs. The carbohydrates in the cells of an organism are broken down to release the stored energy.
Simple carbohydrates
Composed of one or a few molecules of sugar. Examples of simple carbs are table sugar and fruit sugar.
Complex Carbohydrates
Extra sugar from an organism may be preserved as complex hydrates of carbon. They consist of hundreds of molecules of sugar.
Answer: Which of the following is formed from lava whose chemical composition is similar to that of both light-colored and dark- colored lava?
a. rhyolite
b. pumice
c. andesite
d. basalt
Answers
Answer:
My answer would be, d. basalt just from my learning. Hope this helps!!
Explanation:
11. Which of these are objects that circle stars other than Earth's sun? Choose the correct answer.
Debelas
exoplanets
planetesima
nebulas
Answers
Answer:
Exoplanets
Explanation:
Exoplanets (also known as extrasolar planet) are other planets outside the solar system. Exoplanets are of different categories, some of them orbit around other stars while some called rogue planets orbit the galactic center.
There are more than 4000 exoplanets which have been discovered, these planets have been discovered using the process of Transit photometry and Doppler spectroscopy.
What does a number in front of a molecular formula stand for?
Answers
Answer:
The small number behind each element symbol designates the number of atoms of each element in a chemical formula. If there is no number, it is assumed there is only one of those elements. A large number in front of a compound designates how many units there are of that compound.