Answer: The radioactive isotopes can be used to track many physiological functions and chemical reactions occurring within the cells of the living organisms including plants.
Explanation:
Phosphorus uptake by the plants: Phosphorus is an essential mineral required by the plants for their growth and metabolism. The radioactive phosphorus-32 can be used to track back the rate at which the plant absorbs the phosphorus from the soil. This can help scientists to identify plants that can absorb phosphorus more quickly.
Pesticides levels in the plants: The pesticides levels in the plants can be traced by using radioisotopes such as chlorine-36. This can be used to trace the fact that how much of pesticide is present in the soil and how much of it is utilized by the plants. This is helpful identifying the fact that which pesticide is useful for the growth of the plants.
How does the tilt of a planet affect its temperature?
plants realease water into the atmosphere by which two processes?
Answer:
Evaporation and Transpiration
Explanation:
How many stages of development take place in incomple metamorphosis? A.two B.three C.four D.five
Answer: isnt it C. four
Explanation:
What is the usefulness of
categorizing Earth's history
into the geologic time scale?
No matter what phase water is in, the water molecules stay the same; they just move differently.”
Explain why this evidence matters:
Answer:
Think about how the water cycle works etiher look in a tetbook or something
Explanation:
Which statements about geocentric model and heliocentric model are true? Select the two correct answers.
A. They both are models of the solar system.
B. They both show the position of Earth relative to the Sun.
C. They both show Earth at the center of the solar system.
D. They both show the Sun at the center of the solar system.
Answer:
A and B
Explanation:
the other 2 answers are just obviously wrong
They are both models of the solar system and they both show the position of the Earth relative to the sun. So the correct option is A and B.
What are heliocentric and geocentric models?A cosmological concept known as heliocentrism assumes that the Sun is located at or close to the center of the solar system or the universe, with the Earth and other planets revolving around it. The Greek philosophers Philolaus and Hicetas hypothesized independently that the Earth was a rotating sphere that rotated daily around a mysterious "central fire" that controlled the cosmos in the fifth century BC.
Two hundred years later, Aristarchus of Samos expanded on this concept by stating that the Sun, together with the Earth and other planets, revolved around a certain central object.
Any solar system (or universe) structure hypothesis that places Earth at the center of the cosmos is referred to as a geocentric model. Ptolemy of Alexandria's geocentric model was the most advanced (2nd century CE). It was widely believed until the 16th century when heliocentric theories like Nicolaus Copernicus took their place.
Therefore the correct options are A and B.
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During which stage of the cell cycle do Mitosis and Cytokinesis occur? (I will give brainliest?
Answer:
Mitosis occurs in Interphase and cytokinesis occurs in Anaphase
Explanation:
When tectonic plates are colliding, what is the geological event that will NOT occur at a convergent boundary?
Question 2 options:
Mountains
Volcanoes
Volcanic Island
Rift valley
The thin outer shell of Earth is broken into large pieces which is called as tectonic plates. Rift valley is not the event of collision between tectonic plates.
What is rift valley?Rift valley is the low land between highlands and mountain ranges created by geographical rift.
These can be formed on both land and deep oceans, where they are made by seafloor spreading process.
It is caused when two tectonic plates moves apart from each other.
Thus, the correct option is D.
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1. You have set up a cell-free transcription system in a test tube. By mixing DNA, RNA polymerase, sigma factors, ribonucleotides and other essential substances you are able to make mRNAs identical to those made under a variety of conditions in the cells from which these components were isolated. What would happen if you were able to remove the sigma factor first added to the tube and replace it with another sigma factor
Answer:
Different messenger RNAs (mRNAs) would have been produced
Explanation:
Sigma factors are protein subunits that form bacterial RNA polymerases and they are responsible to initiate RNA synthesis. The number of sigma factors is variable between different bacterial species. For example, Escherichia coli contains seven sigma factors, while Bacillus subtilis has at least 17 sigma factors, which control the transcription of different genes. These factors determine the specificity of the RNA polymerase to the target gene promoter regions and then control transcription initiation.
Which of the following is not true about groundwater
A)
Its a long-term reservoir
B)
Significant during drought
C)
It is the only source of freshwater
D)
It is replenished by surface water
the correct statement is
D. It is replenished by surface water
Answer:
C - it is the only source of freshwater
Explanation:
Surface water is another source of freshwater, rendering this statement not true
Con ayuda de un microscopio se observa una bacteria en el agua transcurridas (2) se miran muchas bacterias . Que ocurrio alli ,que tpo de reproducccion sucedio meiosis o mitosis
Answer:
Ninguna de las dos. No ocurre ni mitosis ni meiosis.
Probablemente haya ocurrido fisión binaria/bipartición.
Explanation:
En este caso estamos hablando de bacterias, organismos unicelulares procariotas. Estos tienen una forma de reproducción asexual denominado fisión binaria. Los eucariotas por su parte pasan por periodos de división celular implicada en el crecimiento denominado mitosis, y división celular implicada en reproducción sexual, denominada meiosis.
La fisión binaria, también conocida como bipartición, si bien muy parecida a la mitosis en algunos aspectos, es la forma de reproducción de las bacterias.
Ambas, mitosis y fisión binaria, implican un duplicado de material genético. El ADN se duplica y una copia va a cada célula hija. Lo mismo sucede con el resto del contenido celular. Finalmente ocurre citocinesis. Sin embargo, a diferencia de la bipartición, la mitosis requiere de mecanismos mucho mas complejos de duplicación celular e involucra también a la cariocinesis, ausente en bacterias.
La fisión binaria ocurre muy rápidamente, en un breve período de tiempo puede hallarse una diferencia considerable en la cantidad de células presentes en un sustrato, producto de esta división. Es por esto que el crecimiento que exhiben las bacterias como población, sigue un modelo exponencial.
The diversity of dogs today can be attributed to selective breeding,
O True
O False
What process is happening to this population of rabbits? (The answer is NOT natural selection. What is natural selection causing to happen?)
A drought is a period of unusually low
rainfall. A farmer notices that a well on the farm stops providing water
during a drought. A nearby lake also
has less water in it than usual. Write a
couple of sentences that explains
what has happened to the water table
in the area to cause these results.
In the drought period, the water label usually lowers due to the extreme heat of the sun that forces the water to undergo the process of evaporation and absorb all the water present on the surface.
What is drought?Drought may be defined as a brief period of abnormally dry weather sufficiently prolonged for the lack of water to cause a serious hydrologic imbalance in the affected area.
During severe droughts, people depend heavily on groundwater—the water held underground in aquifers. During these periods, the rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth of water in wells gradually increases.
Therefore, in the drought period, the water label usually lowers due to the extreme heat of the sun that forces the water to undergo the process of evaporation and absorb all the water present on the surface.
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There are enzymes in the small intestine explain why these are needed
Answer: Enzymes are essential for healthy digestion and a healthy body. They work with other chemicals in the body, such as stomach acid and bile, to help break down food into molecules for a wide range of bodily functions.
Explanation: i hope i helped. and you are loved and be happy! <3
Please help will give brainliest
Explanation:
Species
Genus
Family
Order
Class
Phylum
Kingdom
Domain
Where does The energy come from to heat the oceans
Answer:
the sun
Explanation:
What’s the answer????
Whats goat plus goat
Answer:
Baby goat.
Explanation:
Two opposite sex goats equal one baby goat.
May I have brainliest?
Answer:
lil baby goat
Explanation:
How does RNA polymerase determine which strand is the template/antisense strand?
Answer:
Although RNA polymerase must recognize sequences on the template strand, by convention we draw the DNA sequence and regulatory signals on the "mRNA-like" strand. (This makes it simpler to directly determine the sequence of the resulting RNA.) The upper strand of DNA is the "mRNA-like" strand.
I hoped this helped out!^^
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Answer:
That is right, internal/external.
Explanation:
Which statements describe components of fitness? (Select all that apply.)
• being free of physical and mental diseases
• performing muscular movement of the body that requires energy
• incorporating cardio and strength training into daily workouts
• having a large support system of friends and family
Answer:
performing muscular movement of the body that requires energy
• incorporating cardio and strength training into daily workouts
The components of the fitness includes performing muscular movement of the body that requires energy as well as incorporating cardio and strength training into daily workouts. The correct options are b and c.
What is fitness?Physical fitness is defined by professionals as "one's capacity to complete everyday tasks with optimized performance, perseverance, and strength while managing disease, exhaustion, and stress and reducing sedentary behavior."
Physical activity can enhance your brain health, assist you in controlling your weight, lower your risk of developing disease, fortify your bones and muscles, and improve your ability to do everyday tasks.
Individuals who sit very little and engage in moderate-to-vigorous physical activity reap health benefits.
Fitness includes performing muscular movements that require energy, as well as incorporating cardio and strengthening exercises into daily workouts.
Thus, the correct options are b and c.
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A married couple plans to have children. The wife has blue eyes (a recessive trait) and her husband has brown eyes (a dominant trait). The husband’s mother had blue eyes. What percentage of their children could possibly have blue eyes?
Answer:
75%
Explanation:
The mom only carries the gene for blue eyes. The dad carries the gene for blue eyes, and the gene for brown eyes. So hypothetically speaking (because Punnet squares are only guesses/predictions) 75% of the kids could have blue eyes
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Which of the following is a result of artificial selection? (4 points)
Animals with beneficial traits in a given environment survive.
Beneficial traits are selected based on the environment.
Individuals with beneficial adaptations reproduce more and pass traits on to offspring.
Crops and livestock animals bear little resemblance to wild ancestors.
Answer:
Beneficial traits are selected based on the environment.Explanation:
The Bloodhound dog breed was bred in the middle ages for an excellent sense of smell to be used for hunting.
The human hands and feet have similar types and numbers of bones. However, hands and feet are very different in their appearance. What physical differences do you notice between the hands and feet? How might these differences relate to differences in the function of these body parts? Would you expect other primates to have hands and feet differently like this? Why or why not?
Answer:
Hands have a larger range of dexterity compared to feet. Longer tendins and stronger grip strength, they are made for more intrucite tasks such as making and using tools. Feet have a larger surface area, made for holding large amount of weight, shorter bones and tendins allow for easy acceleration and no extra flesh to get in the way. Other more primitive species will not have the feet we have due to evolution. They simply do not have the evolved sense of brain pwer hians haev in order to make tools. So they have more need for speed, grip exc. in feet to escape pradators and live day to day. Where on the other hand humans do not.
Explanation:
The metatarsals that can be found in the foot are larger than the metacarpal bones that are in the hands.
It should also be noted that the phalanges of the hand are larger than that of the foot. The way that the metacarpal of the thumb is built is vital for mobility and movement.
Primates have hands and feet that are different from that of humans because they use their hands and feet for grasping. They also have strong clavicles and flexible shoulder joints. This enables them to climb and grasp things firmly.
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PLEASE DO THIS WITH YOUR OWN WORDS 20 POINTS
Explain how Earth's atmosphere has changed over time.
Answer:
It describes changes in the state of the atmosphere over time scales ranging from decades to millions of years. These changes can be caused by processes inside the Earth, forces from outside (e.g. variations in sunlight intensity) or, more recently, human activities.
Explanation:
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How does energy transfer from the hot water to the cold air
Answer:
humidity and evaporation
Explanation:
An igneous rock contains
large crystals of quartz, feldspar, and horn-
blende. How did the rock most likely form?
which best describes a difference between transcription and DNA replication?
a.transcription does not require dna
b.only transcription happens in the nucleus
c.dna replication takes place in the ribosome
d. dna replication uses thymine
Answer:
D: DNA replication uses thymine
Explanation:
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I know when a hot surface is touch receptors in the hand send a signal to the nervous system the nervous system then sent a signal to the musculine and the arm to contract and move the hand from the hot surface which of these best describes this example