Answer:
Beakers should not be used for measuring a liquid's volume because beakers can be inaccurate. For example, they are typically accurate within 5 percent. Beakers should only be used for approximating volume.
A better choice for accurate volume would be a graduated cylinder, since they are accurate within 1 percent. The best options are pipets, burets and volumetric flasks. All three are accurate within less than 0.2%.
Essentially, beakers are not precise, and therefore should not be used for measuring the volume of a liquid.
An organism has the allele frequency of a =0.4 and b=0.3. What is the frequency for allele c? (A) c=0.3 (b) c=1.0 (c) c=0.4 (d) c=0.0
Answer:
The frequency for allele c is f(c)=0.3
Explanation:
Due to technical difficulties, you will find the explanation in the attached file
what are the three types of muscle fibers
Answer:Skeletal, cardiac and smooth
Your welcome!
How could this statement be revised to make it a hypothesis? Fish meal is safer than artificial fertilizers, but it does not make plants grow. Fish meal is a better fertilizer than artificial fertilizer because fish meal is natural. Plants that are fertilized with fish meal will grow taller than plants that receive artificial fertilizer. Plants that receive artificial fertilizer will be better than plants that receive fish meal.
Just take out the fluff.
Plants that are fertilized with fish meal will be healthier for plants than the plants that receive artificial fertilizer.
Or make one of those If, Then, Because statements.
If a plant is fertilized with fish meal rather than artificial fertilizer, then the plants will be overall healthier because fish meal is natural compared to the artificial fertilizer.
Answer:
C
Explanation:
How is energy related to the change of state represented by the model?
A. Atoms gain energy as a solid changes to a liquid.
B. Atoms gain energy as a solid changes to a gas.
C. Atoms lose energy as a solid changes to a liquid.
D. Atom lose energy as a solid changes to a gas.
Please help. I think the answer is D.
Answer:
option A is correct
Explanation:
when atoms in the solid state are heated they gain energy and start vibration due to which solid molecule lose their rigidity and are converted into liquid by the gain of energy
Answer:
A
Explanation:
Which of the following characteristics are DNA specific characteristics?
a) sugar is missing an oxygen
b) double stranded
c) found only in the nucleus
d) features the bases G,T,A and C
Answer:
a, b, and d
Explanation:
The correct options would be options a, b, and d.
The DNA is primarily made up of 3 components, namely:
Deoxyribose pentose sugar: a sugar that is missing an oxygen, and hence, the prefix 'deoxy'.Phosphate group.Purine and pyrimidine bases. The purine bases include Adenine (A) and Guanine (G), while the pyrimidine bases include Cytosine (C) and Thymine (T)The DNA consists of two strands that are linked together through a hydrogen bond. They are usually found primarily in the nucleus and organelles like mitochondrion and chloroplast of eukaryotic organisms. However, due to the absence of nucleus in prokaryotic organisms, DNA is found within the cytoplasm.
Hence, the correct properties of DNA according to the question are:
sugar is missing an oxygendouble strandedfeatures the bases G, T, A, and Cshould pollution control be the responsibility of the government or the individual? explain your answer
Answer:
Yes!
Explanation:
There are many different kinds of pollution like air, water, etc. Air pollution mainly comes from factories and cars which can be solved with a little help from our government. Same with the water pollution, the government could use some funds for a nation wide cleanup it 50% of pollution would be gone.
Help with 1 and 2 (earth and science)
Answer:
The Earth is 4.6 Billion years old.
QUESTION 2:
Option A is the correct answer.
Hope it helps:)
Characteristics of professional values and attitude
Answer:
Professional behavior involves the particular characteristics such as ethics, values and attitudes that are traits helps in identifying a professional members of a specific profession.
The principles that are central to practicing a profession which, includes integrity, empathy, unselfishness, consistent improvement, excellence and ability to team work with members of the wider team.
A professional attitude means that an individual is capable of: time managing effectively. expresses leadership quality. maintain ethical manner. displays determination and tenacity.
What is one benefit of cutting off the unopened flower buds after cross-pollination the open flowers in Wisconsin Fast Plants
Answer:
Plants will no longer use the resources to produce flowers but will convert those resources to produce seeds
Explanation:
Wisconsin Fast Plants are variety of Brassica rapa that was developed in order to improve the ability of cruciferous crops to resist to diseases.
After cross pollination( transfer of pollen from another to stigma of two different plants), using cut method, it will be difficult to close the flower bud that was cut, the resources or nutrients that will be needed to produce another flower will be use to produce seeds because the flower bud cannot be close and the bud are exposed as new flowers.
what is convection?
Answer:
talvez seja outra coisa importante
Which of the following statements correctly compares transcription in prokaryotes and eukaryotes?
A. Bacteria have one type of RNA polymerase, whereas eukaryotes have at least three.
B. RNA polymerase in both prokaryotes and eukaryotes produce the same RNA molecules.
C. Both eukaryotes and prokaryotes recognize a polyadenylation signal in order to terminate transcription
D. Prokaryotes have at least three types of RNA polymerases, whereas eukaryotes only have one.
Answer: Which of the following statements correctly compares transcription in prokaryotes and eukaryotes?
Explanation: It would be B
The correct comparison between transcription of prokaryotes and Eukaryotes is that prokaryotes have one type of RNA polymerase, whereas eukaryotes have at least three.
Prokaryotes Transcription:
Only three promoter elements: -10, -35 promoters, and upstream elements. Prokaryotes have only one type. In prokaryotes, transcription and translation occur simultaneously.Polyadenylation do not occur in prokaryotes. Transcribed mRNAs in prokaryotes are polycistronic. In prokaryotes, termination is done by either rho-dependent or rho-independent mechanisms.Eukaryotic Transcription:
Eukaryotes contain many different promoter elements: TATA box, initiator elements, CAAT box, etc.There are three types of RNA polymerases, I, II, and III in Eukaryotes, The RNA is transcribe in the nucleus and then translate in the cytoplasm.Eukaryotic mRNAs are monocistronic.Termination is done by two elements: a poly(A) signal and a downstream terminator sequence.Therefore, the correct comparison between transcription of prokaryotes and Eukaryotes is that prokaryotes have one type of RNA polymerase, whereas eukaryotes have at least three.
To know more about Transcription,
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Which term also describes selective breeding? natural selection artificial selection survival of the fittest overproduction of offspring
Answer:
The correct answer is : artificial selection.
Explanation:
Selective breeding is also known as the artificial selection as there is the selecting agent is human instead of nature or environment and the characteristics are desired or selective instead of advantageous.
In this process the selective agent that is humans selects the desired characters or traits by choosing in a particular animal or plants that might produce sexually and have offspring with desired character.
Thus, the correct answer is : artificial selection.
Answer:
correct answer; c
Explanation:
The processing of combining what you know with what you have learn to draw logical conclusion is called
Answer:
Inferences
Explanation:
An inference is an idea or conclusion that's drawn from evidence and reasoning.
A patient has a very high concentration of insulin receptors on cells that require insulin for glucose to enter. How should insulin dosages be adjusted for this patient to have blood glucose levels within the normal range?
How many moles are in 4 grams of nitrogen
Answer:
0.2855776164 mol N
Explanation:
The molar mass of Nitrogen is 14.0067g/mol. So,
4 grams N [tex](\frac{mol N}{14.0067 grams N} )[/tex] = 0.2855776164 mol N
8) According to the illustration at right, what process is indicated
by the arrows labeled B?
A. Evaporation
B. Precipitation
C. Infiltration
D. Runoff
Answer:
I think it's "D''
Explanation:
Once a phage genome has become part of the host chromosome, it is called a ________.
Answer:
The answer is prophage.
Explanation:
When a bacteria injects it's genetic material into another cell and that phage genome becomes a part of that cell's/host's chromosome, it is called a prophage and it can replicate itself and produce other phages as instructed.
I hope this answer helps.
Which of the following organelles functions in making ribosomal subunits
Answer:
There is no any figure.What to do?Describe what latitude and longitude lines look like on a map.
Answer:
guy above is right
Explanation:
In the scientific method, how is a hypothesis tested? By becoming a theory By doing minimal research By experimentation and observation By disputing the results of other scientists
Answer:
by experimentation and observation
Explanation:
Answer:
C
Explanation:
Indicate whether each of the following statements about regulatory proteins is true or false.
1. Regulatory proteins control transcription initiation by modulating the ability of DNA polymerase to bind to the promoter.
2. Regulatory proteins function by binding to specific sequences on the DNA called regulatory sequence.
3. Hundreds of regulatory sequences have been identified and each one provides a binding site for a specific protein that is able to recognize the sequence.
4. In order to recognize and bind to the correct regulatory sequence, a regulatory protein must unwind and separate the two strands of the DNA double helix.
5. Binding of a regulatory protein to DNA either inhibits transcription by getting in the way of RNA polymerase or stimulates transcription by favoring the binding of RNA polymerase to the promoter.
6. Repressors are regulatory proteins that bind to RNA polymerase and act to prevent or decrease the initiation of transcription.
7. Activators are regulatory proteins that bind to enhancers and act to stimulate the initiation of transcription.
Answer:
WAP
Explanation:
FOR
In DNA , what base pairs with cytosine? adenine guanine cytosine thymine
Answer:
guanine
Explanation:
IN DNA guanine make a base pair with cytosine and thymine make a base pair with adenine
In DNA, cytosine binds with guanine in the opposite strand. Therefore, option "B" is correct.
What is nucleotide base pairing?There are five types of nucleotide bases adenine, cytosine, guanine, thymidine, and uracil. These divide into two classes of nucleotides pyrimidine and purine nucleotide bases. Pyrimidines are uracil, thymine, and cytosine whereas adenine and guanine are purines.
DNA consists of adenine, cytosine, guanine, and thymidine. In RNA, adenine, cytosine, and guanine are present but thymine is replaced by uracil. Pyrimidine always binds with the purines through hydrogen bonding. Adenine binds with thymine. Cytosine binds with guanine. But when adenine pairs with uracil in RNA.
Therefore, nucleotides are the functional units of DNA.
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What are the advantages and the disadvantages of using a resource person in teaching a first aid lesson
Answer:
Resource people are experts or authorities who contribute information and opinions to participants in a learning situation. They frequently are used to conduct educational activities, but may also be helpful to your committee at the program planning stage. Resource people may be from within or outside the organization.
When sugars are broken down to produce usable energy for cells, a large amount of heat is released. Explain how the water inside a cell helps to keep a cell’s temperature constant.
Answer:
Explanation:
This is due to the fact that water has high specific heath capacity,which makes it to accommodate large amount of heat energy produced by the catabolic reactions which liberated heat.
General, the amount of heat energy needed to raise the temperature of a particular substance over a given amount is called the specific heat capacity of that substance. Therefore for water, the amount of heat energy needed to raise the mass of 1kg of water by 1 degree is called the specific heat capacity of water.
Since large hydrogen bonds held water molecules together,it takes a long time of heat energy to break these bonds free to raise the temperature of water.Hence, water in living cells is able to accommodate large amount of heat energy to stabilise the temperate of the cells.
The nuclear DNA content of a single sperm cell in Drosophila melanogaster is approximately 0.18 picogram. What would be the expected nuclear DNA content of a primary spermatocyte in Drosophila
Answer:
The correct answer is - 0.72 pg.
Explanation:
A we know that, genetic material present in one primary spermatocyte divides in between four sperm cells that means that each sperm cell has 25 percent of DNA or genetic material of the primary spermatocyte.
Given:
1 sperm cell = 0.18 nuclear DNA
So,[tex]DNA content of one sperm cell = \frac{\text DNA content of primary spermatocyte}{4}[/tex]
0.18*4 = DNA content of primary spermatocyte
DNA content of primary spermatocyte = 0.72 picogram
PLSSSA HELPPP !!!! Why does the author include this paragraph in the
article?
А- to emphasize the urgent threats to biodiversity
on Earth
B- to illustrate that humans are able to create
solutions to the threats to biodiversity
С-to contrast the rate of die-off happening to
certain modern species with that of the
dinosaurs
D- to demonstrate the effects of the loss of
biodiversity on historical ecoystems
Maybe you should spell please correctly first
Answer:
I think it's c
Explanation:
im not really big and smart on ela and stuff or history but I think it's c. correct me if I'm wrong
Which of the following statements is considered an observation?
O Her hair is brown.
O The house is empty because there are no lights on
The dog ran away because it was scared.
O The glass of water is super cold.
Answer:
brown hair
Explanation:
because all you had to do was look at it
How can a female inherit red-green color blindness?(1 point) A. Her mother is a carrier, and her father has the condition. B. Females cannot inherit red-green color blindness. C. Her mother is not a carrier, and her father has the condition. D. Her mother is a carrier, and her father does not have the condition.
Answer:
B
Explanation:
Females can not inherit red-green color blindness
Viruses are called host specific.Why?
Explanation:
Hey, there!!
Viruses are called host specific because it only affects the certain type of specific cells or on certain organism. For example plant virus tomato mosaic virus only effects tomato it doesn't effect to human or other organism.
Likewise, mumps, chicken pox only affects to human health not plants. So, it's true state that viruses are host specific in nature.
Hope it helps...
The city of Los Angeles wants to know if there is a connection between physical fitness and air pollution. Fifty volunteers from the mayor’s office agree to be tested. First, they are asked to ride a stationary bike for 1 hour in a pollution-free air chamber. A week later, the 50 volunteers return and are again asked to ride a stationary bike for 1 hour in a chamber filled with air pollutants common to Los Angeles. Their heart rates are monitored throughout the 1 hour bike rides. Name the control group Name the experimental group Name the independent variable Name the dependent variable
Answer:
Control group: volunteer stationary bike riders in a pollution-free chamber
Experimental group: volunteer stationary bike riders in a chamber filled with air pollutants common to Los Angeles
Independent variable: exposure to air pollution
Dependent variable: The heart rates (physical fitness) of the volunteer riders.
Explanation:
In a scientific experiment, data is compared between the control group and experimental group to ascertain the effect of the independent variable on the dependent variable. A control group is the group in an experiment that is not treated with the independent variable i.e. the independent variable is controlled while the experimental group is the group that is treated with an independent variable.
N.B: The independent variable is the variable controlled by the experimenter in order to influence the dependent variable (measurable outcome).
In this experiment, the independent variable is the AIR POLLUTION the volunteer riders are exposed to while the dependent variable is the PHYSICAL FITNESS/ HEART RATES of the volunteer riders, which is dependent on the exposure to air pollution (independent variable).
The control group in this experiment is the volunteer riders placed in a POLLUTION-FREE CHAMBER where the independent variable cannot influence or have any effect on the measurable variable (dependent). The experimental group is the volunteer riders placed in a CHAMBER FILLED WITH AIR POLLUTANTS. The independent variable (air pollution) has been changed in the experimental group.