Answers
Answer:
I would say the correct answer is c
Explanation:
The statement that could be added to A is phosphate. The correct option is B.
What is DNA?Deoxyribonucleic acid is a polymer made up of two polynucleotide chains that coil around each other to form a double helix that contains genetic instructions for the development, functioning, growth, and reproduction of all known organisms and viruses. Nucleic acids include DNA and ribonucleic acid.
The fraction of the DNA double helix that supplies structural support to the molecule is known as the phosphate backbone.
The DNA molecule is made up of two strands that wind around each other like a twisted ladder. Each strand has an alternating backbone of sugar (deoxyribose) and phosphate groups.
A nucleotide is made up of a sugar molecule (ribose in RNA or deoxyribose in DNA) linked to a phosphate group and a nitrogen-containing base.
Thus, the correct option is B.
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Related Questions
Two parents have a boy. The woman is pregnant. What is the likelihood she will have a boy for her second child?
50%
75%
0%
100%
Answers
ASAP can someone help me with this will mark you brainliest
1. What properties of water cause the water to rise in a straw or capillary tube?
a. Solubility B. surface tension C. capillary action
Answers
Answer: C, capillary action.
Explanation:
A straw works because when you suck the air out of the straw, it creates a vacuum. This causes a decrease in air pressure on the inside of the straw. Since the atmospheric pressure is greater on the outside of the straw, liquid is forced into and up the straw and into your mouth.
On a neuron, what does the synaptic terminal (aka bulbs) do?
Answers
The synaptic terminal or bulb is located at the end of the axon, it is where neurotransmitter molecules are released transmiting the impulse to another neuron by the process of synpasis.
PLEASE HELP!!!!!!!!!!!!!!!!!! Dr. Budai is determined to find the best solution to help the hotel, the new species, the butterflies, and the flowering plants coexist in the same location. She is hoping to accomplish this goal by genetically modifying one of the three organisms: the new species, the butterfly, or the flowering plant.
Now that you have explored modifying a trait for one of the species in the previous activity, answer the following questions.
question 1.What was the species and trait you investigated?
question 2.Why do you think the modification you explored would best help the organisms and hotel coexist? Explain your reasoning.
question 3. Dr. Budai is hoping you can help design a different modification from the one you already explored. What modification would you suggest? Do you think it would be more or less beneficial than the modification you discussed in Question 2? Explain your reasoning.
Answers
The answers include the following:
The species and trait you investigated was the the flowering plant and the trait was the bright colored flowers. The modification I explored would best help the organisms and hotel coexist such that it will ensure that the hotel is beautified and the organism will be be attracted to the pollen grains as food.The modification I would suggest is for more nectar to be present and it would be more beneficial due to more pollination occurring.What is Pollination?This is referred to as the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilization and the production of seeds.
The modification would best help the organisms and hotel coexist such that it will ensure that the hotel is beautified and provide it with an aesthetic feeling by the visitors.
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Devise a serial dilution scheme to prepare 1/10, 1/30 and 1/90 dilutions of a disinfectant.
Answers
Serial dilution is a simple process that involves repeated dilution of a stock solution to obtain solutions of different concentrations. This can be used to prepare a series of dilutions, each of which is one-tenth or one-third of the preceding concentration.
The following is an example of a serial dilution scheme to prepare 1/10, 1/30, and 1/90 dilutions of a disinfectant:Step 1: Obtain 3 sterile tubes labeled A, B, and C. Step 2: Transfer 1 mL of the disinfectant to tube .
A containing 9 mL of sterile water. This is the 1/10 dilution.Step 3: Transfer 3 mL of the 1/10 dilution to tube B containing 7 mL of sterile water. This is the 1/30 dilution. Step 4: Transfer 3 mL of the 1/30 dilution to tube C containing 7 mL of sterile water. This is the 1/90 dilution.
Therefore, 1/10, 1/30, and 1/90 dilutions of a disinfectant can be prepared using this serial dilution scheme.
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How to find cane yield?
Answers
From an agronomical point of view, there is a lot that the grower can do to maximize sugarcane yield. Proper crop nutrition is an important factor to achieve this.
In a large number of cases, nutrients that drive sugarcane yield forward, will also improve the sugar content and quality of the harvested sugarcane crop.
Most required nutrients have specific roles to play in improving yield:
What type of mutation occurred in the following? Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAAUCAGGAACCC
Answers
Answer:
Insertion
Explanation:
Mutation is a sudden change that occurs in the genome of an organism that is heritable i.e it can be transfer from parent to offspring. There are different types of mutation Missense, nonsense, Insertion.
Insertion is a type of mutation that involves addition of extra Nitrogenous base that was not originally in the DNA strand. This will increase the number of the DNA strand and may also affect the function of protein to be formed
The mutant strand contains Uracil(U) which was not in the normal DNA strand which indicates insertion type of mutation.
GGAAUGAAACAGGAACCC -Normal
GGAAUGAAA U CAGGAACCC- Mutant
The pedigree of Queen Victoria of England shown below is often use is in example of sex-linked inheritance. Victoria was a carrier of hemophilia, a sex linked disorder that is controlled by a recessive allele. The blood of a person with hemophilia clots very slowly or not at all because the person does not produce one of the proteins needed for blood clotting. Victoria passed the hemophilia allele on to her son Leopold, who had the disease, and to two of her daughters, who were carriers. The allele then passed through successive generations of Victoria's family, as the pedigree below shows.
Answer the following questions on a separate sheet of paper.
1. Which of Victoria's children were carriers of the hemophilia allele?
2. Which of Victoria's children passed the hemophilia allele on to Empress Alexandra of Russia?
3. Which of Victoria's children passed the hemophilia allele on to Queen Victoria of Spain?
4. Assume that a direct descendant of Maria Cristina, daughter of Queen Victoria Eugenie of Spain, has just been found to have had hemophilia. How would this change Maria Cristina's status?
5. Explain why males are more likely than females to have hemophilia.
Answers
The answers are as followed:
Victoria's daughters Alice and Beatrice were carriers of the hemophilia allele.Victoria's son Alfred passed the hemophilia allele on to Empress Alexandra of Russia.Victoria's daughter Victoria Eugenie passed the hemophilia allele on to Queen Victoria of Spain.If a direct descendant of Maria Cristina has just been found to have had hemophilia, this would change Maria Cristina's status from a carrier to a person with the disease.Hemophilia is a sex-linked disorder, meaning that it is controlled by a gene located on the X chromosome. What is hemophilia?Hemophilia is a sex-linked disorder, meaning that it is controlled by a gene located on the X chromosome. Males have only one X chromosome, while females have two. This means that if a male inherits an X chromosome carrying the hemophilia allele, he will have the disease because he does not have a second X chromosome to compensate for the defective one.
In contrast, females have two X chromosomes, so if they inherit the hemophilia allele on one of their X chromosomes, they will typically be carriers of the disease rather than having it themselves. This is because the normal copy of the gene on their second X chromosome can compensate for the defective one. This is why males are more likely than females to have hemophilia.
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what is the meaning of skeleton system
Answers
Answer:
■ What is the meaning of skeleton system
➢The skeletal system is your body's central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments. It's also called the musculoskeletal system.
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A plant that has round seeds is crossed with one that has wrinkled seeds. The offspring had half round seeds and half wrinkled seeds. What were the genotypes of the parents?
A plant that has round seeds is crossed with one that has wrinkled seeds. The offspring had half round seeds and half wrinkled seeds. What were the genotypes of the parents?
Rr x Rr
RR x rr
Rr x rr
RR x Rr
Answers
Answer:
2nd one
Explanation:
I believe this is correct. rr is a recessive homozygous.
Draw the egg and label it
Answers
Answer:
What egg?
Explanation:
Answer:
/’‾‾‾`\
/ \
| |
\.____./
The trait “hairy ear rims” is thought to be controlled by a gene on the Y chromosomes. State with what frequency a man affected with “hairy ear rims” passes the trait onto his sons.
Answers
have fun with to the bus for me and you know what I do to you and your mom is influenced and I don't know how to the summar
4. Does simple diffusion require an input of energy?
Answers
Answer:
no
Explanation:
Simple diffusion does not require energy or need the assistance of a transport protein. Other larger or charged molecules that diffuse across a membrane may need assistance from a protein.
Which would be an example of JUSTICE?
A. Paying a person $500 to take part in a one-day medical trial
B.Hiding the potential side effects so that a participate will join a study
C.Recruiting healthy, wealthy participants only
D.Sharing the research with the participants after the study has ended
Answers
this demonstrates justice because they are participating for free but still getting something in return. A is incorrect because you’re hiring them for a service and it doesn’t specify that they will see the end result.
How would transcription be affected if a gene that needed to be expressed was missing its promotor?
Answers
Answer:
it can't be used to make a protein in that cell.
Explanation:
If a gene is not transcribed in a cell, it can't be used to make a protein in that cell. If a gene does get transcribed, it is likely going to be used to make a protein (expressed). In general, the more a gene is transcribed, the more protein that will be made.
The transcription is affected as when the gene has not been transcribed the protein will not make. When a gene is transcribed, protein synthesis can happen.
What is gene transcription?Gene expression begins with transcription. To create an RNA molecule, the DNA sequence of a gene must be copied. RNA polymerases, which join nucleotides to create an RNA strand, carry out transcription (using a DNA strand as a template).
A gene cannot be used to produce a protein in a cell if it is not transcribed there. If a gene gets transcribed, it will probably be used to produce a protein (expressed). In general, more protein will be produced the more a gene is transcribed.
Therefore, the transcription is impacted since the protein cannot be produced if the gene is not transcribed. Protein synthesis can take place when a gene is transcribed.
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Will this movement re hire an input of energy?
Answers
Their movement will require the input of energy. That is option B.
What is an active transport?An active transport is defined as the movement of molecules across the cell membrane from different compartments in the living organism.
The active transport makes use of energy because of the need to move molecules from a semi permeable membrane that is against a concentration gradient.
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Please help me out with this.
Answers
The cell wall protects the cell it acts like a barrier
Can someone write this in different words please?
I believe that this experiment was helpful in helping me understand the concept of
DNA and DNA fingerprinting. The lab made it very simple to understand the concept of DNA fingerprinting and how it is used. It gave a helpful simulation of how DNA finger printing is used in crime scenes and how different everyone's DNA is. Overall, this lab did help me understand the concept of DNA fingerprinting more
Answers
I found this experiment really helpful in understanding the concept of DNA and DNA fingerprinting. The lab made it easy to grasp how DNA fingerprinting works and its practical applications. It provided a great simulation of how DNA fingerprinting is used in crime scenes and highlighted the distinctiveness of each individual's DNA. Overall, this lab greatly improved my understanding of DNA fingerprinting.
in developed countries which of the following is a positive effect of agricultural changes in the past century?
A. Desertification
B. Clearing rainforests
C. Contamination due to run off
D. Amount of food produced has increased
E. Nutrient rich soil for farmland increasing
Answers
In developed countries , amount of food produced being increased is a positive effect of agricultural changes in the past century.
Agricultural changes in developed countries were set up such as application of fertilizers etc so as to achieve a maximum yield as the increasing population all over the world means increase in food production to cater for individuals and to prevent starvation and death.
Agricultural changes were also done to ensure goods produced have a very high quality.
The remaining options such as Desertification, Clearing of rainforests and contamination can be referred to as part of the negative effect of agricultural changes in the past century.
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Which of the following factors prevent(s) the organizer from forming in the endoderm?
A. Dsh
B. GBP
C. Xnrs
D. Vegt
E. Vg1
Answers
Answer:
Explanation:
C
Which situation could cause an ecosystem to lose its equilibrium?
A. Existence of a top predator species
B. Competition among species for food
O C. Loss of a keystone species
D. Interdependence among species
Answers
According to the research, the correct answer is Option C. Loss of a keystone species is a situation that could cause an ecosystem to lose its equilibrium.
What are keystone species?It is a species whose role in the trophic chain is essential for the ecosystem and the conservation of biodiversity.
In this sense, their extinction from a certain region would generally negatively affect the dynamics of that ecosystem, most likely the environment would lose its ability to support life and remain desert.
Therefore, we can conclude that according to the research, the keystone species are those that, before their disappearance, the ecosystem would be seriously unbalanced.
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Define: hypothesis, theory, principle
Answers
hypothesis: a proposition made as a basis for reasoning, without any assumption of its truth.
theory: an idea used to account for a situation or justify a course of action.
principle:a fundamental truth or proposition that serves as the foundation for a system of belief or behavior or for a chain of reasoning.
how does studying embryos show evidence for evolution
Answers
Answer: Embryology, the study of the development of the anatomy of an organism to its adult form, provides evidence for evolution as embryo formation in widely-divergent groups of organisms tends to be conserved. Another form of evidence of evolution is the convergence of form in organisms that share similar environments.
how is the information between our dna structured
Answers
The similarly alongside the cladogram you move,the greater variations in DNA the organisms have compared to the common ancestor.
What is cladogram?A cladogram has been an evolutionary tree that diagrams the ancestral relationships amongst organisms. DNA sequence analysis of the hemoglobin alpha gene shows that humans and chimpanzees have a more similar sequence to each other than they do to the gorilla’s DNA sequence.
Analogies structure has been body parts that have a similar function but differ in structure. All vertebrate embryos have a tail and gill slits at some point during embryonic development.
Therefore, The similarly alongside the cladogram you move,the greater variations in DNA the organisms have compared to the common ancestor.
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name the type of cell division that result in the formation of sperm cell
Answers
The curve below shows the percentage of population of aquatic species that die in response to doses of pollutant A:
(REEFER TO CURVE)
A local manufacturing plant reports a spill that released pollutant A into the local watershed. Pollutant A is a toxic substance. Local officials must determine if the residents should be evacuated from the area. Initial groundwater samples show pollutant levels at 5 mg/kg of water. Which decision is supported by the empirical evidence provided by the dose-response curve?
A)Evacuation is not needed; continue groundwater monitoring.
B)Residents should be evacuated until levels decrease.
C)The spill no longer needs monitoring.
D)Residents should only evacuate above LD50
Answers
Answer:
B) Residents should be evacuated until levels decrease.
Explanation:
Regulated cell death that is a necessary part of development is called
Answers
A crane has a sharp and pointed beak while the duck has a flat beak.Explain why
Answers
Answer:
The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.
On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.
The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.
How do flowers help plants to reproduce?
(This is a 5th grade question!)
Answers
Answer:
plant sex
Explanation:
when two plants love each other very much,they have sex
they pollinate i think.
What happens at locations where magma convection currents flow away from one another?
A. Overlying, adjacent plates collide violently.
B.groundwater rises to the surface.
C.new crust is formed along the boundary.
D.oceanic plates slide beneath continental plates.
E.overlying, adjacent plates are pulled apart.
Answers
Overlying, adjacent plates are pulled apart when magma convection currents flow away from one another.
What is magma conventions?Magma is the molten rock below the crust, in the mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust.
As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.Hence, option E is correct.
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Answer:
What happens at locations where magma convection currents flow away from one another?
A. Overlying, adjacent plates collide violently.
B. Groundwater rises to the surface.
C. New crust is formed along the boundary.
D. Oceanic plates slide beneath continental plates.
E. Overlying, adjacent plates are pulled apart.