Answer:
According to the semiconservative model, after one round of replication, every new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA. ... Each subsequent round of replication would then produce double helices with greater amounts of new DNA.
The semiconservative model, after one round of replication, every new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA. Each subsequent round of replication would then produce double helices with greater amounts of new DNA.
Why do they call it semi-conservative?This ]method is known as semi-conservative replication because two copies of the original DNA molecule are made, each copy conserving (replicating) the details from one half of the original DNA molecule.
Each copy has one actual strand and one newly-synthesized strand.
Thus, new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA.
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Effects of temperature on the permeability of Rhoea discolour leaf full lab report. Pdf
Answer:
The results of the former experiments of the author which showed that the permeability of protoplasm increases in light and decreases in the dark were confirmed by the investigations of several authors and by the results obtained in the present paper. 2. The results of investigators who endeavor to show that the permeability increases in light only for some substances, while it may decrease in light for other substances, and that the permeability of protoplasm of some plants increases in the dark while it is not changed by the change of illumination in other cases, are incorrect since the methods used by these investigators to determine the permeability were inexact or faulty
PLS SOMEONE HELP I HAVE AN HOUR ITS DUE!
Answer:
100%
Explanation:
Use a Punnett square to facilitate calculating the possibility.
y y
Y Yy Yy
Y Yy Yy
Y is the white teeth trait, which is dominant. So, there is a 100% chance, though heterozygous.
Describe the difference between the level of classification known as a domain versus species. I will give brainliest
The major levels of classification are: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.Explanation:
Name one function of the respiratory system other than gas exchange?
Answer:
another function of respiratory system is
it allows to breathe
If a DNA sequence it GAATGCCT, what are the matching base pairs?
Answer:
CTTACGGA
Explanation:
During a muscle contraction, the muscle cell membrane becomes temporarily permeable to
a. acetylcholine.
b. sodium
ОООО
с. АТР.
d. calcium.
During muscle contraction, the muscle cell membrane becomes temporarily permeable to sodium (Option b is correct).
Muscle cells are excitable, which means that these cells change from a resting state to an excited state in response to stimuli.At resting (non-signaling) state, Na+ ions are found at a higher concentration outside of the muscle cell than inside the cell, whereas potassium (K2+) ions are found at a higher concentration inside the cell than out the cell.When a nerve transmits an excitable signal that a muscle cell, Na+ flows into the muscle cell, and simultaneously potassium (K2+) ions out of the cell.The influx of Na+ ions is caused by the opening of voltage-gated sodium (Nav) channels found in the membrane (sarcolemma) of muscle cells.In conclusion, during muscle contraction, the muscle cell membrane becomes permeable to sodium ions (Option b is correct).
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Many desert mammals have developed a nocturnal lifestyle. This means that during the day they sleep underground in their burrows, and they come out to eat and play at night. What is a good reason for a desert fox to show this pattern of behavior?
Answer:
A good reason why a desert fox shows this pattern of behavior is to protect themselves from cold conditions since at nighttime, it gets very cold in the desert!
Explanation:
Nocturnal is a type of animal behaviour shown when the animals are active at night time and inactive at daytime. Desert fox shows this behaviour so that it can avoid the hot daytime of the desert.
What is nocturnal behaviour?Nocturnal lifestyle is the behaviour adopted by animals that are active at night time and are inactive during the daytime. During the daytime, they rest in the cool burrows, holes and underground canals to prevent the loss of water and to protect themselves from the extremely hot environment.
The desert animals like desert foxes have adapted the nocturnal lifestyle to avoid the extreme heat during the daytime and sleep in their underground burrows. Instead, they come out during the night when it is cool in deserts to eat and play.
Nocturnal lifestyle is shown by the diurnal animals that rest and sleeps in the burrows, holes and cool places during the hot time of the day.
Therefore, the desert fox shows a nocturnal lifestyle.
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Which of the following is not true?
A. Humans rely entirely on technological adaptations in order to thrive in various environments and they do not exhibit biological adaptations.
B. All humans living today belong to a single species.
C. Humanity cannot be classified into discrete, bounded geographic categories because variation in most traits exists along clines.
D. Ecological and social environments lead to biological differences between individuals.
E. Biological differences across human populations are in part due to biological adaptations to local environments.
Use the drop-down menus to identify the organelles labeled on the animal cell to the right. Label A Label B Label C Label D
The identification of the organelles labeled on the animal cell to the right are:
Label A : D Label B : BLabel C : CLabel D : A What is an animal cell?An animal cell is a multicellular cell that is present in all animals. The main distinction between an animal cell is that it is made up of without cell wall.
Animal cells do not contain the things such as vacuole chloroplast that are present in plant cells and the cell walls. They are not unicellular because animals are always multicellular.
As the animal cell is a multicellular cell it contains cell organelles like mitochondria endoplasmic reticulum, ribosome, a nucleus that contain the genetic material of the animal.
Thus, the correct options are Label A : D, Label B : B, Label C : C, and Label D : A.
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What is the important organelle that eukaryotic cells have and prokayotic cells don't have?
Differences in traits such as hair texture are determined by differences in
Answer: genes or genetic traits. These genes determine what physical characteristics a human will possess. They are determined by the parents of an offspring and vary from person to person
Explanation:
A roan coloration is the product of crossing a red bull and a white cow.
You cross a roan bull and a red cow. Answer the following question.
What type of inheritance does this show?
O A. Incomplete Dominance
O B. Codominance
OC. Sex-linked
O D. Complete Dominance
HELPP
ANSWER
ITS B HFHDHDHDHHFHDHDD THIS WAS ONE OF MY QUESTIONS IN MY MAP TEST TODAY-
PLEASE HELP
Identify the "Four Rs" of solid waste reduction and give an example of how
individuals can apply each strategy.
Answer:
the Department of Recycling & Resource Management uses the "4 R's" - which are: Reduce, Reuse, Recycle and Rethink.
The Department of Recycling & Resource Management uses the "4 R's" - which are: Reduce, Reuse, Recycle and Rethink.
What are the 4 R's of waste disposal explain each in a sentence?The four Rs of waste disposal are:
Refuse: Say no to the non biodegradable wastes Reduce: Decreasing the accumulation of wastes Reusing them wherever possible.Thus, uses the "4 R's" - which are: Reduce, Reuse, Recycle and Rethink.
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5. What are the other names and functions of ethyl alcohol?
Answer:
Ethanol, also called ethyl alcohol, grain alcohol, or alcohol, a member of a class of organic compounds that are given the general name alcohols; its molecular formula is C2H5OH.
Answer:
Ethyl alcohol is known as pure alcohol or Ethanol.
It can be used for the making of alcoholic beverages like beer and in medicine as a solvent.
Describe what happened to the colored water and the pieces of paper after the holes were punched in the material covering the beaker
Answer:
The paper spreads over the surface of water and the colored water sunk to the bottom.
Explanation:
The paper hole punches were spread over the surface of the water in the large beaker due to lower density of paper as compared to water whereas the colored water had sunk to the bottom. Convection currents is the driving force that caused the pieces of paper to move over the water's surface. At the surface, the water cools and becomes more denser so the coloring sank toward the bottom of the beaker creating convection currents that will leads to the presence of paper on the surface of water.
In guinea pigs, the short hair trait is dominant. If two heterozygous guinea pigs were crossed, what would be the phenotypes of the offspring? *
A. 100percent short hair
B. 75 percent short and 25 percent long.
C. 50percent short and 50 percent long
D. 25 percent short and 75 percent long
what is the role of microorganisms in food preservation?
Answer:
Preservation usually involves preventing the growth of bacteria, fungi (such as yeasts), and other microorganisms, A number of methods of prevention can be used that can either totally prevent, delay, or otherwise reduce food spoilage.
Explanation:
A scientist gathers data on the growth of a population over time. A graph of the data is shown below.
Which statement below best describes the graph at point X?
A. The population is declining
B. The population is increasing
C. The population has reached the carrying capacity of the ecosystem
D. The population has exceeded the carrying capacity of the ecosystem
help..................................................
Option F. It is moist and cool with decaying debris.
Answer:
F. It is moist and cool with decaying debris.
Explanation:
I know this because an earth room always needs their supplement from the dirt in order to stay moist and wet during any weather.
ASAP Name one challenge we need to overcome by using solar panels
Answer:
It actually Polutes the enviornment more to own solar panels. This Is caused by the production and the dismemberment of the way its made.
Explanation:
Solar panels are composed of photovoltaic (PV) cells that convert sunlight to electricity. When these panels enter landfills, valuable resources go to waste. And because solar panels contain toxic materials like lead that can leach out as they break down, landfilling also creates new environmental hazards. The potential environmental impacts associated with solar power—land use and habitat loss, water use, and the use of hazardous materials in manufacturing—can vary greatly depending on the technology, which includes two broad categories: photovoltaic (PV) solar cells or concentrating solar thermal plants (CSP).
What is created by a large pressure difference in air fronts?
A. Density
B. Dewpoint
C. Wind
D. Isobars
Answer:
A. density.
Explanation:
At a front, the two air masses have different densities,
based on temperature, and do not easily mix. One air mass is lifted above the
other, creating a low pressure zone. If the lifted air is moist, there will be
condensation and precipitation. Winds are common at a front.
What is the definition of galactic center and galaxy cluster ?
Answer:
The Galactic Center (or Galactic Centre) is the rotational center of the Milky Way galaxy; it is a supermassive black hole of 4.100 ± 0.034 million solar masses, which powers the compact radio source Sagittarius A*.
crossing two genetically different individuals
A.) inbreeding
B.) cloning
C.) selective breeding
D.) hybridization
Please help!!!!!!!!!!!!!!!!!!!!
Answer: 4. Cytokinesis. 5. Metaphase. 6. meiosis II. 7. metaphase.
Explanation:
1. An organism's ___ shows what alleles they have for a particular gene, while the ____ is the physical expression of the trait. A. phenotype; genotype B. genotype; phenotype C. Genotype; allele D. Trait; allele
Answer:
I believe the answer would be B
HELP!!! I need the answer and reasoning!!! I’ll mark as brainliest!!!
Answer:
A. Destruction of terrestrial biota
Explanation:
all the other answers would decrease the carbon output. thickening of ocean sediments reinforces a carbon reservoir (which stores carbon), reduction in the use of fossil fuels would reduce the amount of carbon emissions, increase in marine biota = increase in carbon storage because marine biota is also a carbon reservoir.
Destruction of terrestrial biota would cause excess output because terrestrial biota is a carbon reservoir, and all of that carbon would be released into the carbon cycle.
One trait a plant can have is either red leaves (R) or brown leaves (o). Another
trait is tall stems (7) or short stems (1). A plant used in a dihybrid cross has
the genotype RrTt. What is the phenotype of this plant?
A. Red leaves, short stems
B. Brown leaves, tall stems
C. Red leaves, tall stems
D. Brown leaves, short stems
The amphibian heart has a single, undivided ventricle, two atria, a sinus venosus, and a Conus arteriosus. Their sarcopterygian ancestors had hearts with all of these chambers, but the ventricle was partially divided and probably aided in separating pulmonary and systemic circulatory circuits. Check the following statements that could help us understand why amphibian evolution resulted in the loss of the partial ventricular septum.
A .The loss of the ventricular septum probably occurred because blood returning to the heart of amphibians bypasses the ventricle being shunted from the sinus venasus and right atrium directly to the pulmonary artery and lungs.
B. Loss of the partial ventricular septum reflects the fact that blood returning to the heart from the systemic circuit is often highly oxygenated because many amphibians rely on cutaneous and buccal gas exchange, as well as pulmonary gas exchange, much of the time.
C. Mixing of blood from the lungs with blood from the body in the ventricle is not a problem. Loss of the partial ventricular septum is not a problem because the spiral valve keeps systemic and pulmonary blood separate within the ventricle.
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
E. The slightly asynchronous contraction of left and right atria help keep systemic and pulmonary circuit blood separated in the ventricle.
Answer:
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
Explanation:
The conus arteriosus plays an important role in directing blood into the correct arterial arches in amphibian which keeps oxygenated and nonoxygenated blood separate from one another. The Conus arteriosus of the amphibian heart receives blood from the right atrium chamber of heart and passes the blood on to the pulmonary circulation which keeps oxygenated and nonoxygenated blood separate from each other and there is no need for partial ventricular septum.
During prophesy I of meiosis, these pairs form a tetras in a process called _.
A woman with type A blood is claiming that a man with type AB blood is the father of her child who is type B.
Can this man be the father of her child?
A No
B. Cannot be determined
C Yes
HELLPPP
Answer:
I think C
Explanation:
Not 100% $ure tho