Answer:
D None of the above.Thats your correct Answer
If a double-stranded segment of DNA has been found to have 23 purines and 15 thymines, how many guanines are there?
Answer: 4 Guanines
Explanation: Following Chargaff's ratio that describes the ration of purines to pyrimidines as 1:1, if there are 23 purines, it follows that there should be 23 pyrimidines; 15 Thymines should therefore be hydrogen bonded to 15 Adenines by complementary base pairing.
We are then left with 8 nucleotides composed of guanines and cytosines in complementary base pairs. This means that half that number (4) should be guanines and the rest cytosines.
The DNA is a double-stranded molecule, which is made up of purine, pyrimidine, a pentose sugar, and phosphate backbone. Chargaff's rule states that any species will have a stoichiometric ratio of 1:1.
The number of guanines in the double-stranded DNA is 4.
In the DNA, the base pairing occurs as:
The guanines bind with cytosine through hydrogen bonding. The adenine binds with thymine with two hydrogen bonds.In the given nucleotide, there are 23 purines (guanine and adenine). There are 15 thymines in the DNA molecule. Based on the Chargaff rule, the 15 thymines will bind to adenine, leaving only 4 guanines and 4 cytosines. Thus, there will be 4 cytosines left to bond with the guanines to achieve Chargaff's ratio of 1:1.
Therefore, the guanine in the nucleotides will be 4.
To know more about Chargaff's rule, refer to the following link:
https://brainly.com/question/19156457
What complementary strand of DNA would be produced from the strand of DNA shown below?
CGT AT
A. CGT AT
B. GCT AT
C. GCA TA
D. GCA CA
Cytosine(C) binds with Guanine(G)
Thymine(C) binds with Adenine(A)
the complementary strand for GCTAT is GCATA ( C )
You would MOST LIKELY find a savannah grassland biome in an area with
A)
50 cm of precipitation.
B)
100 cm of precipitation.
200 cm of precipitation.
D)
250 cm of precipitation.
Answer:
D
Explanation:
Savannah grassland biome is found in an area with an average precipitation of 76.2-101.6 cm. Therefore, option B is correct.
What is the savannah grassland biome?A region of grassland with scattered trees or groups of trees is how the savanna biome is frequently defined.
The savanna is a dry environment, making it difficult for tall plants like trees to flourish. The trees and grasses that thrive on the savanna have adapted to the dry climate and limited water supply.
In regions with savanna growth, a tropical wet and dry climate is prevalent. The annual precipitation averages between 30 and 50 inches, while the mean monthly temperatures are at or above 64 degrees Fahrenheit. Less than 4 inches are received per month during the dry season for at least five months out of the year. Hence, option B is correct.
Learn more about the savannah grassland biome, here:
https://brainly.com/question/13610321
#SPJ6
which of the following environmental conditions will have a negative effect on a population
you didnt give the list of answers
Explanation:
Please help me please!!
(Picture above)
The diagram below shows the morphological change of two species.
Which statement explains why species 1 and species 2 are different?
Natural selection can cause gradual speciation changes.
Natural selection favors traits that can transmit through generation.It can leads to a new distinctly different species.What is natural selection?It is the process through which populations of living organisms adapt and change to new environment conditions and pass these genes to next generations.
Define speciation?It is how a new species of an organism is created.It occurs when a group within a species separates from other members of its species and develop its own unique characteristics.To know more about natural selection here
https://brainly.com/question/9830102
#SPJ2
What is erosion?
OA) The breakdown and movement of material.
O B) Materials carried by a stream.
C) The breakdown of material.
OD) The movement of material from one place to another.
Clear selection
Answer:
A.
Explanation:
the process of eroding or being eroded by wind, water, or other natural agents
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2000 m/s2. What is the net force, to the nearest newton, that accelerates the ball?
Hello!
[tex]\large\boxed{F = 100N}[/tex]
Use the equation F = m · a (Newton's Second Law) to solve:
We are given the mass and acceleration, so plug these values into the equation:
F = 0.05 · 2000
F = 100 N
Why is the mitochondria important in cellular respiration?
Answer:
Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients. Mitochondria are also responsible for generating clusters of iron and sulfur, which are important cofactors of many enzymes.
Explanation:
it's often referred to as the "powerhouse"
Answer:
Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients.
Explanation:
When organisms move out of the population, this is known as?
When organisms move out of the population, this is known as EMIGRATION.
The population growth is largely determined by the birth rate, death rate, immigration, and emigration.In biology, emigration refers to the process by which one or more organisms leave its/their original population in order to relocate to another geographic region.Moreover, migration occurs when animals travel from one habitat to another in order to search for food, new habitat conditions, mates for reproduction, etc.
In conclusion, when organisms move out of the population, this is known as EMIGRATION.
Learn more in:
https://brainly.com/question/5053605
which organ system is responsible for transporting oxygen throughout the organism,
In humans, mitosis produces cells with ____ chromosomes and _____ chromosomes are found in the gametes after Meiosis.
Answer:
46, 23
Explanation:
which kind of cells carry out the process of cellular respiration?
All living cells must carry out cellular respiration. It can be aerobic or anaerobic respiration. Prokaryotic cells carry out cellular respiration within the cytoplasm or on the inner surfaces of the cells, while Mitochondria carry out the cellular respiration in eukaryotic cells. They are also called as the 'Power house' of the cell as they produce the energy needed to the cell to function properly.
On a miscue analysis, a high semantic similarity and low graphic similarity suggests that the student is:______.
a) neglecting phonics.
b) integrating phonics and contextual clues.
b) overusing phonics.
d) neglecting context.
Answer:
A
Explanation:
On a miscue analysis, a high semantic similarity and low graphic similarity suggests that the student is neglecting phonics
Which is(are) a key role (or roles) of most family therapists?
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with various acidic solutions of known pHwhile the control set was treated with a solution of .
Answer:high ph is harmful to this type of plant
Explanation:
Sensory input from the skin of the foot reaches the cerebral cortex via a third order neuron that originates in the:____________.
Answer:
Central posterolateral thalamus.
Explanation:
The third order neuron originates from Central posterolateral nuclei thalamus because it is the nucleus of thalamus because it receive impulses from the neospinothalamic tract and the medial lemniscus of the posterior column-medial lemniscus pathway i.e it received sensory information from the body, send it to the brain and then transfer the information to brodman.
Will the coronavirus increase the importance of environmental sustainability?
Answer:
It will.
Explanation:
environmental conditions affect the stability of severe acute respiratory syndrome coronavirus 2 in nasal mucus and sputum. The virus is more stable at low-temperature and low-humidity conditions, whereas warmer temperature and higher humidity shortened half-life.
The modern industrial agricultural practice that has resulted in high yields but with a loss in biodiversity is:
Answer: Monoculture
Explanation:
One type of crop at a time in one specific field. "Mono" means one.
Please help me ?!!!!
Answer:
the last one I am guessing
Explanation:
If right can you give me brainiest
Hope you have a wonderful day:)
Raphael is studying the water cycle and its critical role in ecosystem functions. He is developing a model of the water cycle, and his initial work is shown below.
look up the water cycle
Explanation:
it will show u what u need to know
Which of the following is part of a skeleton's biological profile that forensic
anthropologists try to establish?
O 1) gender
O 2) age
O3) height
O4) All of the answer choices are correct.
All of the answers should be correct
Answer:
I want to say all of the above / all of the answer choices are correct
Explanation:
The gender can be determined once the skeleton has reached adulthood
Age by how the boned have matured like the teeth, skull, and even pelvis
The height, if you have the full skeleton, then there you go
*Please note that I have not taken a forensics class but I did some light research and I have some background knowledge
*Also found out, with light research that they can even tell the race by a person's skeleton
What is the reason for the increased number of drug resistant bacteria being found in hospitals?
Answer: This rise is related to their natural resistance to most commonly used antibiotics and their capacity to acquire resistance to other antibiotics either by mutation (penicillins) or by transfer of resistance genes on plasmids and transposons (aminoglycosides and glycopeptides).
Explanation:
Which step is not part of a normal convection cycle?
A.
Unequal heating creates a pressure difference.
B. Air flows from a high-pressure area to a low-pressure area.
C. Cooled air sinks toward the surface, creating a low-pressure area
D. Warmed air sinks, creating a high-pressure area as it falls.
above it.
Answer:
D. Warmed air sinks is not a normal convection cycle outcome
Explanation:
Warm air is buoyant and rises. Cold air is dense and sinks.
Think of fog in the air. Fog forms in low/cool areas, as the sun comes out and warms up the atmosphere the upper atmosphere, heat flows to cold so upper atmosphere air displaces the fog.
Space heating, the steam or hot water radiators are placed along the floor typically causing convection of warm air to rise up over windows and cold walls, breaking up cold air drafts.
What energy transformation occurs when you use a hot pack?
Answer: Thermal energy
Explanation:
Which best describes the process of evaporation/transpiration in the
water cycle?
O A. Water from the ocean enters the atmosphere as water vapor.
O B. Water on the surface of Earth enters the groundwater supply.
C. Water vapor in the atmosphere returns to the surface of Earth as
liquid water.
O D. Water on the surface of Earth and water lost by plants enters the
atmosphere as water vapor.
Answer:
A
Explanation:
Answer:
The answer is D
Explanation:
Water on the surface of Earth and water lost by plants enters the atmosphere as water vapor
The person above me is wrong I tried it and it was wrong and I tried D and I got it correct
1) State three economic importance of Amoebiasis,
Answer:
An amoeba's economic value can be found in medicine and nutrient recycling. According to Biology Reference, certain amoeba species can cause sickness and death, while others are important in maintaining healthy ecosystems because they recycle the nutrients needed by bacteria and keep the bacterium population under control.
OAmalOHopeO
the fundamental explanation for the cause of cancer is that
Answer:the fundamental explanation for the cause of cancer is that
Explanation:
Answer:
A:Cell replication becomes uncontrolled
Explanation:
Definition of cancer: A disease in which abnormal cells divide uncontrollably and destroy body tissue.
Which type of mutation does not change the amino acids produced?
Silent mutation: Silent mutations cause a change in the sequence of bases in a DNA molecule, but do not result in a change in the amino acid sequence of a protein (Figure 1).
Answer: Silemt Mutation
Explanation:
A-pex
suggest two factors other than the rate of nitrogen fixation that may affect the avality of nitrogen in the marine ecosystem
Answer: run off from land/rivers and phytoplankton blooms
Explanation:
Nitrogen, particularly as nitrate is easily leached from soil. Human agriculture relies on fertilisers with significant nitrate content that applied at levels higher than it can be used. The balance end up as runoff, much of which ends up in
The two factors that are other than the rate of nitrogen fixation that fit the marine ecosystem are runoff from the land or rivers and the phytoplankton blooms
Waht is nitrogen fixation ?Nitrogen fixation refers to the chemical process by which molecule N2 has a strong Tripple covalent bond and in the air, it gets coveted into NH3 or a related nitrogenous compound that is typically in soil or aquatic system.
The fixation is essential for life as inorganic nitrogen compounds are needed for the biosynthesis of nitgen-containing organic compounds like amino acids.
As nitrogen is easily found in soil and can be added by fertilizers it ends as runoff and damages the ecosystem.
Find more information about the marine ecosystem.
brainly.com/question/2305178
