Answers
The correct answer is C. The temperature of the water
Explanation:
In an experiment such as the one described about the speed of snails in water, the manipulated variable is the factor or element that is manipulated on purpose. This means the researcher or researchers slightly change this element to compare how this affects another variable. In this context, the manipulated variable is the temperature of the water because researchers used three different temperatures (cool, room-temperature, and warm), and therefore they manipulated or changed this factor. Moreover, it is expected temperature affects the distance nails move, which is the main variable.
Related Questions
An experiment is designed to compare the effects of glucose and sucrose on the osmoticpotential of a model cell. Two dialysis bags are used, one filled with a solution of 5% by massglucose and the other with a 5% by mass sucrose solution. A given membrane is permeable towater but impermeable to glucose and sucrose. Each membrane bag is then placed in a beaker ofdistilled water for two hours. The change in mass of the glucose bag is recorded below.Solution (5% by mass) Initial Mass ofSolution andMembrane Bag (g) Final Mass of Solutionand Membrane Bag(g)Glucose in DistilledWater 10.0 13.2Sucrose in DistilledWater 10.0 ?I got this question incorrect because I said the glucose would pass through the semipermeablemembrane, however, it would be the water that passes through. One way I can prevent myself.
Answers
Answer:
i dont understand you're qiestion
Glucose can pass through the semi permeable membranes where the molecules can pass because they are soluble in water enough. The molecules can pass through because of the solubility factors.
What is a semi permeable membrane ?It is the semi permeable membrane where the half of the molecules get passed through the membrane. The molecules are selectively present.
Cell membranes are an example of semi-permeable membranes. Cell membranes allow small molecules such as oxygen, water carbon dioxide and glucose to pass through, but do not allow larger molecules like sucrose, proteins and starch to enter the cell directly.
Transport is helped by certain molecules as well where the few of the ions, channels and the molecules are taken up by the membrane through the selected transportation of the ions.
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Describe three roles of lipids
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Answer:
-storing energy
-chemical messengers
-structure
Explanation:
Any one know what structure this is
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That is an ATP molecule if I remember correctly
Answer:Pretty sure its D
Explanation:
Please help. What safeguards are in place to protect Americans from unsafe food? Are these methods science-based?
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Answer: The FDA and USDA cerate food safety programs, safeguards to protect Americans, to protect people from unsafe food. The FDA has monitoring programs for pathogens, naturaltoxins, pesticides, etc.; their methods are science-based.
The safeguards that are placed to protect Americans from unsafe food are FDA and USDA. FDA means food and drug administrator and USDA means U.S. department of agriculture.
What are FDA and USDA?FDA stands for food and drug administrator. It is a health and food department to ensure public health and to check the food items that the citizens are consuming.
USDA stands for The United States Department of Agriculture. The department is responsible for making the laws regarding food quality, and they also develop new qualities of fruits and vegetables.
These departments are based on scientific research and methods. Many scientists work under this to save people from having bad food.
Thus, The FDA and USDA are the safeguards set up to protect Americans from tainted food.
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Which of the following pairs of organisms belong to the same population?
A. a dog and a cat
B. a marigold and a geranium
C. a human mother and her child
D. a spider and a cockroach
Answers
B. would be the answer.
I hope this helps
A pair of human mother and her child belongs to the same population.
What is population?"Individuals of any species live in groups in a well defined geographical area, share or complete for similar resources, potentially interbreed and thus constitute a population."A dog and a cat, a marigold and a geranium and a spider and a cockroach do not share similar resources and they don't interbreed so they do not belong to the same population.
Hence, the correct option is C. a human mother and her child.
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Study this image. PLEASEE HELPP WILL GIVE BRAINLYEST
Which statement correctly explains what is happening?
A. Oceanic and continental plates are colliding.
B. Oceanic and continental plates are shifting past each other.
C. Two continental plates are forming a large mountain.
D. Two oceanic plates are creating several island chains.
Answers
Answer:
its B
Explanation:
becuse When oceanic or continental plates slide past each other in opposite directions, or move in the same direction but at different speeds, a transform fault boundary is formed. No new crust is created or subducted, and no volcanoes form, but earthquakes occur along the fault.
a hypothesis for exercise 2 might state "if the five substances are distinct, then they will have unique characteristics that distinguish them from one another." Was this hypothesis supported or disproved?
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pls help lol jakakaka
Answers
Answer:
IS C!!!
Explanation:
I JUST DID THAT IN SCIENCE LOL
A biological molecule is analyzed and it is discovered that the molecule is composed of several amino acids. Which of these identifies the biological molecule?
A. It is a monosaccharides
But is an unsaturated fat
C. It is a protein
D. It is a lipid
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what is Acetyl-coA and how does it help with food digestion ?
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Answer: what is Acetyl CoA is made from pyruvate under aerobic conditions in the mitochondria. The process of conversion is irreversible. I don't know the other half I'm sorry.
Explanation:
Acetyl CoA Used by the citric acid cycle as a fuel. Carbon acetyl groups are converted to CO2 and ATP and electrons (carried by NADH and FADH2) create even MORE electrons. Acetyl CoA is made from pyruvate under aerobic conditions in the mitochondria. The Process of conversion is irreversible.
cellular respiration allows organisms to release
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Answer:
energy // ATP
Explanation:
An plant only requires the correct chemicals to make plant food
Answers
In 1859, when Darwin published "On the Origin of Species by Natural Selection", which argument was he explaining?
A) An explanation for the change in types of minerals in an area through ecological
succession.
B) The reasons for the loss of biodiversity on all habitats on Earth.
C) An attempt to explain the structural similarities observed among diverse living
organisms.
D) The effect of carrying capacity on the size of population.
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the chemical reaction in which glucose is converted to ATP in the mitochondria
Answers
Answer:
Glycolysis
Explanation:
Glycolysis. Six-carbon glucose is converted into two pyruvates (three carbons each). ATP and NADH are made. These reactions take place in the cytosol.
As a person ages, the body takes a downward decline to a point where functioning is compromised. Identify and discuss two conditions related to aging that result from decline. The conditions may come from any of the organ systems. What can be done to delay or reduce the onset of decline.
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Answer:
Your body may heal more slowly. There are fewer immune cells in the body to bring about healing. The immune system's ability to detect and correct cell defects also declines. This can result in an increased risk of cancer
Explanation:
Your body may heal more slowly. There are fewer immune cells in the body to bring about healing. The immune system's ability to detect and correct cell defects also declines. This can result in an increased risk of cancer
Cell walls in plants provide_______
1) Water storage
2) Control of cell function
3) Structural support
Answers
Answer:
3.
Explanation:
Plant cell walls primarily provide mechanical support for cells and collectively form the skeleton of the plant.
Answer:
the answer is choice 3
Explanation:
hoped I helped
I need help asp due in about an hour. List three kinds of information that can be learned by sequencing DNA. Also list three specific things that have been learned from the sequence of the human genome.
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Answer:
These bases provide the underlying genetic basis (the genotype) for telling a cell what to do, where to go and what kind of cell to become (the phenotype).
Whole genome sequencing is a lot like weather forecasting. It doesn't predict exactly what will happen, but gives you the chances of something happening. This means that it will tell you more about your risk for a certain disease, like diabetes, not if you have diabetes or not.
Answer:
1. any genetic information can be found through sequencing such as, eye colour, hair colour, and skin colour
2.
Improved genetic testing to gauge predisposition for disease
Tracing genes to diseases and birth defects
Creating customized therapies based on genetic profiles
Manipulating or repairing DNA to stave off disease
Explanation:
Below are models of two types of cells. Which of the following structures are common to both cell types?
A. mitochondria and vacuoles
B. mitochondria and cell wall
C. vacuoles and chloroplasts
D. cell wall and chloroplasts
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Answer:
A.mitochondria and vacuoles
Explanation:
The one on the left is the animal cell and the one on the right is the plant cell.
Both of these contain mitochondria and vacuoles(are larger in plant cells).
A solution with a lower solute concentration in comparison to Solution
Answers
Answer:
Hypotonic
Explanation:
When you are comparing solutions with unequal solute concentrations, the solution with a higher solute concentration is a hypertonic, while the one with a lower one is a hypotonic. If they are equal, then they are isotonic.
Why do most of the marine species live at or near the surface of the ocean
Answers
Answer:
Most marine organisms live within the sunlit surface waters. Strong sunlight supports photosynthesis by marine algae. Algae either directly or indirectly provide food for the majority of organisms. ... Most marine animals also live near the surface because this is where they can find food.
Explanation:
Brainliest please?
Which of the following is an example of technology we currently add to people's bodies? O A Computer brain OB Electronic lungs OC Internal heaters D. Prosthetic leg
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Answer:D. Prothetic leg
Explanation:
All the other answer choices are still dreamt of by many scientists and engineers. but you always see people wearing prosthetic legs. D is the obvious answer.
What substances are combined with sunlight in the process of photosynthesis?
A. carbon dioxide and water
B. water and simple sugar
C. carbon dioxide and oxygen
D. oxygen and simple sugar
Answers
Answer:
D is the answer
Explanation:
check it out
How would your life change if I stopped using plastic? Use your brain and imagine.
Answers
Activity #1
Normal DNA Sequence
DNA:
TACCCCGTGCAT ATAT CATATAGCACT
mRNA:
Protein:
Mutated DNA Sequence
DNA:
TACCCCGTGCACATATCGTATAGCACT
mRNA:
Protein:
Describe the effects of the change(s) in the mutated DNA sequence. Did the protein change? Do you think
this protein can perform its normal function?
Stephanie Elkowitz
Help please!!!!
Answers
for the normal DNA sequence, since thymine (T) binds with adenine(A) and Adenine(A) binds with uracil(U) because there is no thymine is RNA guanine(G) pairs with cytosine(C) :
normal DNA:TACCCCGTGCAT ATAT CATATAGCACT
normal mRNA:AUG GGG CAC GUA UAU AGU- AUA UCG UGA
i grouped letters in threes as codons
normal Protein:methionine-glycine-histidine-valine-Tyrosine-Serine-Isoleucine-serine-stop
mutated DNA:TACCCCGTGCACATATCGTATAGCACT
mutated mRNA:AUG GGG CAC GUG UAU AGC AUA UCG UGA
mutated protein:methionine-glycine-histidine-leucine-Tyrosine-Serine-Isoleucine-Serine-stop
In the mutated protein valine is replaced with leucine. Those two amino acids have different radicals that perform different functions so the protein will have an altered function.
ILL GIVE BRAINLIEST PLZ HELP.
Atoms of carbon-14 are radioactive. They decay into atoms of the element nitrogen. Suppose that a sample of rock is taken from a fossil. The sample has 500 atoms of carbon-14 and 1500 atoms of nitrogen. If carbon-14 has a half-life of 5700 years, how old is the fossil? 5700 years old 11,400 years old 17,100 years old 2850 years old
Answers
Answer:
11,400 years old
Explanation:
The total number of atoms present at the beginning = number of C-14 + number of N-14 atoms.
Hence;
1500 + 500 = 2000 atoms = No
At time t, N = 500 atoms of C-14 remains
Since the half life of C-14 (t1/2) = 5700 years
N/No = (1/2)^t/t1/2
500/2000 = (1/2)^t/5700
1/4 = (1/2)^t/5700
(1/2)^2 =(1/2)^t/5700
2 = t/5700
t = 2 * 5700
t = 11,400 years old
Refer to the diagram ( Figure 2) provided below . Which process is taking place? Sc. 912. L.16.15
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Answer:
Meiosis
Explanation:
Took the test
Write a paragraph about the symbiotic association between algae and fungi
Answers
Answer:
if you need the answer then follow
Explanation:
me and I swear I will send the answer after you follow me
Earth's crustal bedrock at the Mid-Atlantic Ridge is.
composed mostly of
1. Basalt with a density of 2.7 g/cm3
2. basalt, with a density of 3.0 g/cm
3. granite, with a density of 2.7 g/cm3
4.granite, with a density of 3.0 g/cm
Answers
Answer: basalt, with a density of 3.0 g/cm^3
Explanation:
Earth's crystal bedrock on the Mid-Atlantic Ridge consists typically of basalt, with a density of 2.7 g/cm3.
What is Mid-Atlantic Ridge?A petrographic have a look at of rocks dredged from the Mid-Atlantic Ridge via way of means of the studies vessel, Atlantis, in 1947 and 1948 suggests that olivine basalt and basalt are the maximum not unusualplace rock kinds of the Mid-Atlantic Ridge.
If magma cools quickly, as an example whilst basalt lava erupts from a volcano, then many crystals shape very quickly, and the ensuing rock is fine-grained, with crystals commonly much less than 1mm in size.
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Explain the interaction with another body system.
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Answer:
Body systems are used throughout your body to help you move and to live like the heart for example.
PLEASE HURRY,(GIVING BRAINLIEST) (THE ACTUAL SUBJECT IS SCIENCE)After a major forest fire kills all of the plants in an area, the first plants to grow in the burned area are often types of grass. Because they are the first thing to grow in the new ecosystem, these types of grass are called pioneer species. What adaptations would help the grass be a successful pioneer species?
A.
slow reproduction and the ability to grow in sunny places
B.
rapid reproduction and the ability to grow in sunny places
C.
slow reproduction and the ability to grow in shady places
D.
rapid reproduction and the ability to grow in shady places
Answers
Answer: B
Explanation:
To help the pioneer species to grow, it needs to have rapid reproduction. But, it also needs the sun to grow very well. If it does not have the Sun, it will most certainly die and be endangered in the area. The answer is B, we need both rapid reproduction and the Sun.
Answer:
rapid reproduction and the ability to grow in sunny places
Explanation:
After a major fire, less sunlight is blocked by trees and other plants. Plants that can use the increased sunlight are more likely to thrive in the new environment. Rapid reproduction would help a plant species to spread more quickly to take advantage of the resources and lack of competition. Therefore, the adaptations that would help grass be a successful pioneer species are rapid reproduction and the ability to grow in sunny places.