Answer:
the correct answer is A
Explanation:
Chi squared is a statistical test that is used either to test whether there is a significant difference, goodness of fit or an association between observed and expected values. the sqaure for this is less than the statistical value originally found, therefor making the null hypothesis void.
The Chi-square test is defined as the statistically significant difference between the expected frequency and observed frequencies.
The correct option is:
Option A. The null hypothesis should be rejected because the critical value is less than the calculated value
The Chi-square test is based on hypothetical facts to determine the significant difference in the calculated and observed frequencies.
The null hypothesis is rejected because the square for the value is less than the statistical or calculated value originally found. Thus, the hypothesis is null and void.
Therefore, the correct option is A.
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What form of potential energy is present in corn?
Subject: Science not biology
Cell walls in plants provide_______
1) Water storage
2) Control of cell function
3) Structural support
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
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.
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
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
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
A solution with a lower solute concentration in comparison to Solution
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.
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
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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How would your life change if I stopped using plastic? Use your brain and imagine.
A scientist wants to determine whether a certain type of yeast is able to perform anaerobic respiration. Describe a test the scientist could perform to see if the organism is capable of this.
Answer:
Follow these steps if you are unsure of the freshness of your yeast (or just want to give it a ‘good start’). See a How-to video of this test. Using a one-cup liquid measuring cup, dissolve 1 teaspoon of granulated sugar in 1/2 cup warm tap water at 110°F-115°F. Using a thermometer is the most accurate way to determine the correct liquid ...
Explanation:
Answer:
He could lock the plant in a room with no oxygen at all, if it survives it's anaerobic, if it doesn't then it's aerobic.
Explanation:
An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. It may react negatively or even die if free oxygen is present.
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.
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:
what is Acetyl-coA and how does it help with food digestion ?
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.
SUBSCRIBE TO DORI SMITH AND LIE THE VIDS IT IS THE ONE THAT HAS A BLUE ICON THAT HAS A D ON IT PLS DROP A SUB
Answer:
Okay
Explanation:
Refer to the diagram ( Figure 2) provided below . Which process is taking place? Sc. 912. L.16.15
Answer:
Meiosis
Explanation:
Took the test
PLEASE HELP
James fills a graduated cylinder with 50 mL of water. He then drops a 00g key into the graduated cylinder. The water level inside the graduated cylinder rose to 53 mL as shown below.
50 mL
53 mL
If Density - Mass / Volume, what is the density of the key?A : 60 gmL
B: 20 gimL
C: 2.05 g/mL
D: 0.05 g/mL
Answer:
20 g/mL
Explanation:
the answer is B :)
Why do most of the marine species live at or near the surface of the ocean
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?
the chemical reaction in which glucose is converted to ATP in the mitochondria
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.
Write a paragraph about the symbiotic association between algae and fungi
Answer:
if you need the answer then follow
Explanation:
me and I swear I will send the answer after you follow me
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
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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The largest diversity of plants and animals on the planet is found in one terrestrial biome.
Answer:
There are diversity of plants and animals species found on the terrestrial biome. The biome such as forest, desert are rich in variety of plants and animals. This states that largest diversity is found in almost all the types of terrestrial biome.
Explanation:
Which of the following does not describe hormones in the body? I’ll mark the correct answer a brainliest
A. they are mediator molecules released in one part of the body but regulating the activity of cells in other parts of the body
B. most hormones enter interstitial fluid and then the bloodstream
C. hormones acts on muscles and glands only
D. hormones exert their effects by binding to receptors on or in the "target" cells
I think its C. hormones act on muscles and glands only. Because hormones act on cells, tissues, organs etc. So this is incorrect and the rest of them are correct.
explain respiration cellular level
Answer:
first off not to be rude but its cellular and second,
Explanation:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
what is the first word that miss sullivan teaches helen to spell
a.Doll
b.Mother
c.Water
d.Friend
Answer:
C: Water.................
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.
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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A student helps his teacher lift a 200 N box of books 1.2 m from the floor to the desktop. In which of the following situations will he do more work? (DOK 3, AKS
8d)
Ο Α.
He lifts a 175 N box to the same height
OB.
He lifts a box of the same weight to a height of 1.7 m.
С.
He lifts a box of the same weight to a height of 0.9 m.
D.
He lifts a 98 N box to the same height
Answer:
Since he is lifting more N its A 175N
pls help lol jakakaka
Answer:
IS C!!!
Explanation:
I JUST DID THAT IN SCIENCE LOL
Any one know what structure this is
That is an ATP molecule if I remember correctly
Answer:Pretty sure its D
Explanation:
cellular respiration allows organisms to release
Answer:
energy // ATP
Explanation:
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
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.
which of the following best describes Mendel's idea of segregation?
A. Male offspring receive traits only from the male parent.
B. Female offspring receive only form the male parent.
C. Each parent has two copies of each gene and passes on only one copy to its offspring.
D. Each parent has one copy of each gene. each offspring receives half of its genes from each parent.
Answer:
C
Explanation:
Since we know about mitosis and sexual reproduction, each parent passes on only one copy of the gene because they got a copy of a gene from each of their parent before, and the new child will end up with two genes, one from each parent.
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.
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