In the structure of a DNA, as the particular complementary base pairing of the DNA nucleotides, the diameter of a DNA molecule is the same over its length.
What is a DNA?DNA stands for deoxyribonucleic acid, is the hereditary unit of an organism which is responsible for the production of characters.
The missing options in the question are:
Purine nucleotides always form base pairs with other purines, and pyrimidine nucleotides always form base pairs with other pyrimidines.The nucleotides in a strand of DNA are held together by hydrogen bondsThe diameter of a DNA molecule is the same along its entire length due to the specific complementary base pairing of the DNA nucleotides.The nitrogenous bases in one strand are held to the nitrogenous bases of the other strand by phosphodiester bonds.In the structure of a DNA, as the particular complementary base pairing of the DNA nucleotides, the diameter of a DNA molecule is the same over its length.
Thus, this is the true statement regarding the structure of a double-stranded DNA molecule i.e., option C.
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In plants and algae, _____ is the source of the electrons needed for photosynthesis. H O2 CO2 H2O NADPH
Answer:
NADPH
Explanation:
If you find a fossil sample made up of numerous adult individuals of the same species, some having a larger body size and larger canines, what might this indicate
A fossil sample showing variation one size and structure of body parts among the same species will indicate evolution among the species.
What are fossils?Fossils are the remains of ancient dead plants and animals which have been preserved for a very long time.
The fossils records have been useful in studying the evolution of policing things.
A fossil sample made up of numerous adult individuals of the same species, some having a larger body size and larger canines will indicate variation and evolution among the species.
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Describe how urine is formed, beginning with the blood
Answer:
blood pressure pushes water and solutes from the capillaries into the capsule through a filtration membrane.
Explanation:
hope this helps
pls mark brainliest
Which three temperature readings all mean the same thing?
A. 273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit
B.100 Kelvin, O degrees Celsius, 32 degrees Fahrenheit
C 273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
D. 373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
Answer:
Answer : The correct option is, (D) 273 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
Explanation :
Conversion of degree Celsius to Kelvin :
K=^oC+273K=
o
C+273
Conversion of degree Celsius to degrees Fahrenheit :
^oF=(\frac{9}{5}\times ^oC)+32
o
F=(
5
9
×
o
C)+32
By using these two conversion factors, we get the three temperature readings all mean the same thing.
For option A :
K=^oC+273=100+273=373KK=
o
C+273=100+273=373K
^oF=(\frac{9}{5}\times ^oC)+32=(\frac{9}{5}\times 100)+32=212^oF
o
F=(
5
9
×
o
C)+32=(
5
9
×100)+32=212
o
F
For option B :
K=^oC+273=100+273=373KK=
o
C+273=100+273=373K
^oF=(\frac{9}{5}\times ^oC)+32=(\frac{9}{5}\times 100)+32=212^oF
o
F=(
5
9
×
o
C)+32=(
5
9
×100)+32=212
o
F
For option C :
K=^oC+273=0+273=273KK=
o
C+273=0+273=273K
^oF=(\frac{9}{5}\times ^oC)+32=(\frac{9}{5}\times 0)+32=32^oF
o
F=(
5
9
×
o
C)+32=(
5
9
×0)+32=32
o
F
For option D :
K=^oC+273=0+273=273KK=
o
C+273=0+273=273K
^oF=(\frac{9}{5}\times ^oC)+32=(\frac{9}{5}\times 0)+32=32^oF
o
F=(
5
9
×
o
C)+32=(
5
9
×0)+32=32
o
F
From the given options, only option (D) is correct.
Hence, the correct option is, (D) 273 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
A volcanic eruption can cause a primary disturbance in an ecosystem. What
is a primary disturbance?
A. A progressive series of changes that take place in an area where
nothing had been living
B. A progressive series of changes that take place in an area where a
community is living
C. An event that removes most of the organisms and soil from an
area
D. An event that removes most of the organisms that live
aboveground
SUBMIT
Answer:
C.
Explanation:
A primary disturbance is an event that causes an extensive and sudden change in an ecosystem. Primary disturbance can greatly alter the natural community by removing most of the organisms from the area while destroying or removing the soil.
Answer:
if it is choosing I think it is C if it helps
Which of these is caused by the interaction between the atmosphere and the hydrosphere?
• drying up of rivers
• building dams out of rocks
•formation of underwater volcanoes
• growth of plants due to heavy rainfall
Answer: Drying up of rivers
The river would play the part of the hydrosphere and the drying up of the river plays the part of the atmosphere
I also got it correct on the test :>
Answer:
Drying up of rivers
Explanation:
See the water from hydrosphere dries up by atmospheric heat and pressureIt then goes up and travels back Rivers are one of those sourcesSo option A is correct
True or false: Typically, once a protein is synthesized in a healthy cell, it will perform its function indefinitely because the cell environment is highly controlled.
Answer:
True or false: Typically, once a protein is synthesized in a healthy cell, it will perform its function indefinitely because the cell environment is highly controlled.
=
False
Why is it important for a cell to control what enters and leaves its structure?
Answer:
If a cell can't control what enters and leaves its structure, harmful and foreign substances can get into the cell and obstruct cell activity.
Explanation:
Mark brainliest if possible and have a great day : )
The cell is covered by the cell membrane, which makes the boundary, and allows only selected materials to enter the cell or exit the cell because some material is harmful to the cellular function.
How do cells selectively accept the material?In cells having a membrane that is selectively permeable, no molecule is enter or lives in the cell. It has several protein transporters which allow the molecule to enter the cell, this maintains the cell's function.
Some inhibitors and toxic materials are responsible to inhibit general cellular functions, like metabolism, and DNA synthesis. Metabolism products made by the cell are necessary and do not allow to escape from the cell.
Therefore, for the proper functioning of the cell, it maintains to allow selective permeability of the membrane.
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A classmate tries to argue that this result is because the butterfly wings must have absorbed the colors.
Explain to them how gene expression played a role in the butterflies phenotypes.
The expression of certain genes at different levels may cause color variation in the butterfly wings.
What is gene expression?Gene expression is the cellular process associated with the transcription of certain genes in particular cell types.
In this case, the trait color in butterfly wings is associated with the differential expression of certain genes during development.
The variation in color may be due to the expression of different alleles in butterflies or the same allele at different levels.
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25. Although three different butterfly species all
inhabit the same flower garden in an area,
competition between the butterflies rarely
occurs. The most likely explanation for this
lack of competition is that the butterflies
Gre
(1) occupy different niches
(2) have a limited supply of food
(3) share food with each other
(4) are able to interbreed
Answer:
1. Occupy different niches
Which is NOT part of the
protection created for National
Parks?
A. illegal to release pollutants within the
range of the park
B. protects the habitats within the park
C. removes the endangered species within it
to repopulate them
D. endangered species are illegal to hunt
The one that is not a part of the protection created for the National Parks is to protect the habitats within the park. The correct option is B.
What are national parks?A national park is a piece of land that was set aside by a country's government for the purpose of conservation. The natural environment is safeguarded by national parks against a variety of dangers, such as logging and land clearing, invasive species, mining, pollution, and urban expansion.
They preserve vital biodiversity, preserve wildlife corridors, and offer refuge to native species that are in danger of extinction. For 421 species of animals and plants that are either threatened or endangered, the NPS protects their environment.
Therefore, the correct option is B. protect the habitats within the park.
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One cause of tsunamis is earth quakes in the ocean floor. In the image, which point represents the hypocenter of an underwater earthquake
Point D represents the hypocenter of an underwater earthquake.
What is Earthquake?An earthquake may be defined as an impulsive damaging trembling of the ground, generally provoking significant collapse, as a result of activities within the earth's crust or volcanic movement.
Hypocentre or focus is the point from which an earthquake initiates and causes sudden destructions. The point exactly above the hypocentre is called the epicenter. Here, point D represents the hypocenter, while point B represents the epicenter.
Therefore, it is well described above.
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Can someone please help me? :(
Answer:
is .b.
Explanation:
i really hopes this helps
Answer:
B. Nuclear energy
Explanation:
hope it HELPS
what's the factor that determines the type of vision of animals ??
consider the two individuals that have the following genotypes: CCDd and Ccdd. Predict the outcomes of a cross for these two individuals. What are the outcomes that could occur in the offspring. Select all that apply
Answer:
CCDd 25%
CCdd 25%
CcDd 25%
Ccdd 25%
Explanation:
The image shows the formation of daughter cells by the process of meiosis.
How does crossing over in meiosis affect the daughter cells?
A It passes the same genetic information to the daughter cells.
B It passes new genetic combinations to the daughter cells.
C It produces four daughter cells of equal size.
D It produces four daughter cells that are diploids.
Answer:
Pretty sure It's B
Explanation:
When the information is crossed, it is no longer the original one of either, and then it gets broken down, and made into 2, so Yeah. Plus I did this topic in school last year I think
if a house uses 200 kWh in one month and the rate of electricity in $2/kWh. what will that families electric be like at the end of the month
Answer:
$400
Explanation:
This is a simple multiplication question.
200kWh × $2/kWh = $400/200kWh
We are worried about the top number, because that is how much it costs the family to use 200kWh of electricity each month.
Final answer: $400 for 200kWh.
In cell division, the phase following the metaphas is known as:
a) prophase
b) anaphase
c) telophase
d) extophase
Answer:
options b
anaphase
hopefully you are go with my answer
An aquatic animal has the antennae that are either smooth or barbed. The allele for barbs is dominant. In the same organism, resistance to pesticides is a recessive trait. One animal that is resistant to pesticides and has a smooth antennae is crossed with one that is heterozygous for both traits.
1. Show the genotypes of the parents.
2. What’s are the genotype(s) of the offspring? What are their phenotypes?
3. What percentage of the offspring will have barbed antennae and resistant to pesticides?
4. What is the ratio of barbed to smooth antenna?
5. What is the ratio of resistant animals to non-resistant animals?
The genotype and phenotype ratio of the offspring depends on the genotype of parents.
What are alleles?Alleles are alternative forms of a gene is trait.
Alleles may be dominant or recessive.
1. Let the alleles for barbed and smooth antennae be B and b respectively
Let the alleles for resistance and non-resistance to pesticides be p and P respectively.
. Genotype of parents are as follows:
bbpp - smooth antennae; resistant to pesticides BbPp- Barbed antennae; non-resistant to pesticides2. The cross is as follows:
bbpp × BbPp = BbPp, Bbpp, bbPp, bbpp, BbPp, Bbpp, bbPp, bbpp, BbPp, Bbpp, bbPp, bbpp, BbPp, Bbpp, bbPp, bbpp.
Genotype of offspring is BbPp, bbPp and bbpp
Phenotype of offspring is;
bbpp - smooth antennae; resistant to pesticides BbPp - Barbed antennae; non-resistant to pesticidesbbPp - smooth antennae, non-resistant to pesticidesBbpp - Barbed antennae; resistant to pesticides3. There are 3 Bbpp offspring out of 16.
Percentage = 3/16
Percentage of the offspring that will have barbed antennae and resistant to pesticides = 19%
4. The ratio of barbed to smooth antennae is 1 : 1
5. The ratio of resistant animals to non-resistant animals is 1 : 1
Therefore, the genotype and phenotype ratio of the offspring depends on the genotype of parents.
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Typical plant fats, such as sunflower oil and corn oil, are _______ in form and _______ in polyunsaturated fatty acid content (Choose the best combination of terms for the respective characteristics)
Answer:
Typical plant fats, such as sunflower oil and corn oil are Liquid in form and High in polyunsaturated fatty acid content.
Explanation:
The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.
A graph entitled Paramecium Contractile Vacuole Contractions has salt concentration on the horizontal axis and contractions per minute on the vertical axis. A very low salt concentration has 30 contractions per minute, low: 22, medium: 15, high: 8, very-high: 2.
Based on the data in the graph, which would most likely happen if the paramecium were placed in distilled water?
The contractions would increase.
The contractions would decrease.
The contractions would cease altogether.
The contractions would establish dynamic equilibrium.
Based on the data in the graph, the condition that would most likely happen if the paramecium were placed in distilled water is the contractions would increase.
What do you mean by Hypertonic salt solution?The Hypertonic salt solution may be defined as a solution that consists of a higher concentration of solute particles outside a membrane as compared to inside.
The contraction would increase when the paramecium was placed in distilled water because as the osmolarity of the distilled water decreases, the contraction would increase. Due to the hypotonic nature of distilled water, the contraction of the contractile vacuole of the paramecium will increase and expel more water quickly.
Therefore, based on the data in the graph, the condition that would most likely happen if the paramecium were placed in distilled water is the contractions would increase.
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This male fiddler crab is waving his claws to attract a female. what type of behavior is this? question 29 options: defense survival learned inherited
This male fiddler crab is waving his claws to attract a female, This is inherited, Option D. This is further explained below.
What is an inheritance?Generally, inheritance is simply defined as the transmission of genetic traits from parents to children.
In conclusion, The female attraction technique is an inherited attribute,
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Which of the following is the approximate projected rate of change in renewable energy consumption from 2010-2040?
A. 4.33 quadrillion BTUs per year
B. 2.33 quadrillion BTUs per year
C. 2.00 quadrillion BTUs per year
D. 0.733 quadrillion BTUs per year
2.33 quadrillion BTUs per year is the projected rate of change in renewable energy consumption from 2010-2040.
What is Renewable energy?These type of resources are usually replenished from time to time through natural occurrences and examples include water, wind etc.
The approximate projected rate of change in renewable energy consumption from 2010-2040 is however 2.33 quadrillion BTUs per year.
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Answer:
2.33 quadrillion BTUs per year
Explanation:
The answer is 2.33 quadrillion BTUs per year
How are the two forms of the protein group different?
Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific 3D structure that determines its activity.
Answer:
complete and incomplete proteins - Complete proteins contain all of the amino acids your body needs such as meat, fish, poultry, dairy, and soy products. Incomplete proteins will be missing an amino acid and include nuts, seeds, legumes (beans, peas), and some vegetables
Explanation: two different kinds of proteins are explained above
Which characteristics belong to angiosperms? Select four options.
Will Give Brainly 20pts
A vascular tissue
B roots
C fruits
D cones
E flowers
The best determination of a community’s quality of life is _______. a. the per capita income b. the climate and weather c. the energy used per capita d. its geographic location
The best determination of a community’s quality of life is the energy used per capita, energy use directly impacts rate of life by affecting economic movement.
Why quality of life is critically dependent upon energy use and consumption?In multiple ways rate of life is also instantly related to the stages of economic activity in a country because adequate economic aids can provide the physical elements required for a high rate life. In such a way , energy use directly impacts rate of life by influencing economic activity.
Thus, option "C" is correct, the energy used per capita, energy use directly impacts rate of life by affecting economic movement.
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How are the right and left cerebral hemispheres specialized for different functions?.
Answer: There is evidence of specialization of function—referred to as lateralization—in each hemisphere, mainly regarding differences in language functions. The left hemisphere controls the right half of the body, and the right hemisphere controls the left half of the body.
If cells are placed in a hypotonic solution containing a solute to which the membrane is impermeable, what could happen
If cells are placed in a hypotonic solution containing a solute to which the membrane is impermeable, then it will shrink and flaccid.
What is hypotonic solution?A Hypotonic solution is a solution that carries fewer dissolved particles (including salt and different electrolytes) than is determined in regular cells and blood. Hypotonic solutions are usually used to offer fluids intravenously to hospitalized sufferers which will deal with or keep away from dehydration.
A cell positioned right into a hypotonic solution will swell and amplify till it subsequently burst thru a technique referred to as cytolysis. The cells will reduce at first, however will later attain equilibrium with the encompassing answer and go back to their authentic condition.
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Why are producers found at the start of every food chain?
Answer:
Producers are always at the beginning of a food chain. Producers begin every food chain because they can make their own food.
Hello people ~
Embryo sac is called monosporic when it develops from
a) One of the megaspores out of the four megaspores which are derived from division of megaspore mother cell
b) Three megaspores
c) Only from two functional megaspores
d) None of these
Answer:
One of the megaspores out of the four megaspores which are derived from division of megaspore mother cell
Explanation:
The main process behind this division is meiosisFirst mother megaspore divide itself into half.Then it again divides into half to form haploidOption A