Which of the following best describes how mRNA is produced? A. RNA provides a template for rna polymerase. B. Rna polymerase provides a template for dna
Final answer:
The correct option is A. DNA provides a template for RNA polymerase. mRNA is produced from DNA through the process of transcription, where RNA polymerase uses one strand of DNA as a template.
Explanation:
The production of mRNA (messenger RNA) from DNA is a process called transcription. This critical step in gene expression involves the enzyme RNA polymerase, which uses one strand of DNA as a template to synthesize a complementary RNA strand. During this process, RNA polymerase unwinds the DNA and reads the template strand from the 3' to 5' direction, pairing each DNA nucleotide with its RNA complement, but substitutes uracil (U) for thymine (T). The correct answer to the question is A. DNA provides a template for RNA polymerase.
Answer:
DNA provides the template for RNA polymerase.
Explanation:
I took the quiz, and it can be generally guessed at because DNA makes RNA which makes proteins so if you see that on your questions it should be that.
2 Polhts
What is true of the members of the same population? Select all that apply.
Answer: They are all the same species.
Explanation: A population is defined as a group of individuals of the same species living and interbreeding within a given area. Members of a population often rely on the same resources, are subject to similar environmental constraints, and depend on the availability of other members to persist over time.
Answer:
They are all the same species
Explanation:
AP3X
Which best describes a chemical oxidation?
the loss of electrons,
the loss of one proton,
the gain of electrons,
or reaction with oxygen gas
Chemical oxidation best describes the loss of electrons from a substance, indicating an increase in oxidation state, which can occur with or without the involvement of oxygen gas.
Explanation:The most accurate description of chemical oxidation is the loss of electrons from a substance. This can occur with or without the reaction involving oxygen gas. Oxidation is a process that deals with the transfer of electrons between chemicals, leading to an increase in the oxidation state of the element being oxidized. A simple example of oxidation can be seen when a metal like iron reacts with oxygen to form iron oxide (rust), where the iron atoms lose electrons to the oxygen atoms.
In organic chemistry, oxidation can also be characterized by an increase in oxygen or a decrease in hydrogen in a molecule. These changes in electron density or chemical bonds can affect the properties and reactivity of the substance. For example, ethanol (C2H5OH) can be oxidized to form acetic acid (CH3COOH), with the addition of an oxygen atom and the loss of hydrogen atoms.
When a woman is pregnant her developing baby receives antibodies from her what type of immunity does this describe?
Answer:
passive immunity
Explanation:
A pressure difference is also known as a(n) ______
A. pressure gradient
B. pressure measurement
C. stationary front
D. isobar
Answer: A would be correct
Explanation:
The desert sand dunes seen here are created through the processes of ___________ and ____________.
Answer:C
Explanation:because why not
Answer:
Weathering and erosion
Explanation:
It is C because weathering creates the sediments and erosion carries them to where they are, and eventually, all the particles and sediments create a sand dune. Hope this helps!
Describe an external adaptation peppered months have?
Answer: Camouflage and Mimicry
Moths that can blend into their surroundings during rest have a distinct advantage for survival from predation, as exhibited by the peppered moth. This adaptation is known as camouflage. Another moth adaptation is mimicry, which confuses or frightens off predators
Explanation:
What is a function of a white blood cell
Answer:
To defend the body against diesease
Explanation:
Answer:
White blood cells protect the body against infection by bacteria and viruses.
Explanation:
White blood cells are part of the immune system that protects your body from infection. These cells circulate through your bloodstream and tissues and respond to injuries and illnesses by attacking unknown organisms that enter your body.
what is the optimal temperature for thermophilic bacteria?
Answer:
optimum growth temperature of 50 or more, a maximum of up to 70C or more, and a minimum of about 20C.
Hope this helps
Withdrawing too much water from an aquifer can cause several issues, including ___?
Answer:
land subsidence,sinkholes,freshwater contamination and having to dig deeper and deeper irrigation wells
Finch species living on the Galapagos Islands exhibit a variety of beak types that favor different foods. Finches that eat seeds and plant parts have beaks of the shorter, thicker variety, while finches that eat insects and other small organisms have thin, pointed beaks. 78% of the finches on an island in the Galapagos have beaks that are identical to Finch 1. What conclusion can you reach about the availability of food for the finches on this island?
Answer:
Assuming that by "Finch 1" it is referring to the ones that have short, thick beaks, the answer is that there is primarily seeds and plants on the island
Answer:
C) The insect populations have been severely limited.
Explanation:
Which regions have the greatest diversity of amphibian species why do you think those areas have so many different amphibian species
Answer:
The greatest diversity of amphibians is in tropical forests.
Explanation:
Because amphibians have highly permeable skin and spend a portion of their lives in water and on land they need the the prevalent humidity of the tropical habitat which enables them to occupy a much wider range.
What happens to the frequency if the period were to change from o.2 seconds to 0.5 seconds
Answer:
The Hz would change
Explanation:
For example, a wave with a time period of 2 seconds has a frequency of 1 ÷ 2 = 0.5 Hz.
23. Fossils are rare because:
a. Only certain parts of organisms can fossilize
b. Very few organisms have died
c. They are only found in North America
d. Fossils are very common, silly
Can I get some help please.
Answer:
D would be the outcome of natural disaster
Explanation:
The growth of the plants reset
Why a cell cannot just keep growing
Answer:
A cell cannot just keep growing because the part of the inner portion of the cell grow quickly as compared to outer side of the cell i. e. cell membrane. So we can say that cell membrane is the limited factor which doesn't allow cell to grow bigger in size. The growth of organisms increases not because of cell size increases, it is due to the number of cell increase because of cell division.
The parts of a chromosome are labeled. The top, shorter portion is labeled a.
Which is indicated by the letter a?
petit arm
queue arm
centromere
gene
.answer:
petit arm
explanation:
all human chromosomes have 2 arms, the p (short) arm and the q (long) arm. they are separated from each other only by a primary constriction, the centromere, the point at which the chromosome is attached to the spindle during cell division.
the symbol "p" stands for "petit", small in French, while "q" was chosen merely because it was the next letter in the alphabet.
Answer:
It should be the petit arm.
Explanation:
You have to know about science to figure this out. Here is why, if you look at the image one of the arms is longer than the other. This is the q(long) arm. The smaller one is the P(small) arm. Petit is french meaning small. the part wher they meet in the middle be the centromere. you can remember this because it is in "center". the lines on it are genes. why? because this is the only answer left ;) hope this helped
If the DNA sequence of Species 5 were examined, which percentage of its nucleotide sequence would be identical to
that of Species 4?
A)
below 61%
B)
close to 96%
between 88% and 96%
D
between 61% and 88%
Answer: D
Explanation:
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1. The Sun, like 80 to 90 percent of stars, is in which stage of life?
A. main sequence
B. stellar formation
C. red giant
D. dying star
2. How do scientists learn about the age of the solar system and its planetary bodies? Select the two correct answers.
A. using radiometric dating of meteorites
B. comparing the composition of the gaseous planets to the rocky planets
C. analyzing impact craters on planetary body surfaces
D. measuring distances between planets
3. Which describe the study of spectroscopy? Select the two correct answers.
a. the number of galaxies
b. interaction of light and atoms
c. emission and absorption of light
d. reflection of light by Earth
4. Which state of matter best describes the elements inside stars?
a. plasma
b. liquid
c. solid
d. gas
5. Which are examples of non-visible light?
a. white light from the sun and microwaves
b. radio waves and ultraviolet light
c. white light from a lightbulb and rainbows
d. rainbows and X-rays
6. Which is the first stage in the life cycle of a massive star?
a. black hole
b. white drawf
c. red giant
d. nebula
7. Which of these is a heavy element in a star?
a. carbon
b. hydrogen
c. lithium
d. helium
8. Why are spectral lines useful in classifying stars?
a. They show the layers that make up a star.
b. They show a star's location.
c. They indicate a star's age.
d. They show the composition of a star.
9. Which statement correctly explains how the Hertzsprung-Russell diagram helps to compare stars?
a. The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
b. Stars with the highest temperatures appear towards the right side of the Hertzsprung-Russell diagram.
c. The Sun's high temperature places it to the far left of the Hertzsprung-Russell diagram.
d. The Hertzsprung-Russell diagram plots stars according to their size and shape.
*U*
Explanation:
1. main sequence
2. using radiometric dating of meteorites; analyzing impact craters on planetary body surfaces
3. interaction of light and atoms; emission and absorption
4. plasma
5. radio waves and ultraviolet light
6. nebula
7. carbon
8. They show the composition of a star
9. The Hertzsprung-Russell diagram plots starts according to their luminosity and temperature, which is also associated with spectral class.
OptionA) The Sun is in the main sequence stage. Option A) and C) Radiometric dating of meteorites and analyzing impact craters help determine the solar system's age. Option B) and C) Spectroscopy studies the interaction and emission/absorption of light. Option A) plasma best describes the elements inside stars. Option B) Radio waves and ultraviolet light are non visible. First stage in the life cycle of a massive star is D) nebula. A) Carbon is a heavy element in a star. Option D) spectral lines show the composition of a star. Statement A correctly explains how the Hertzsprung-Russell diagram
Here are the answers to the questions you asked:
The Sun, like 80 to 90 percent of stars, is in which stage of life?This graph shows three types of species based on the different patterns of survivorship.
Which survivorship strategy is used by the type I species?
A.) having a high birthrate
B.) having a short life span
C.) having few offspring
D.) dying mostly while young
Answer: having few offspring
An organism creates young through a process called reproduction. All living things reproduce. No species would live past one generation if they didn't. Thus, option C is correct.
What is the importance of species having few offspring?Natural selection holds that organisms reproduce more young than they can support in their environment. Those who have greater physical capacity for surviving, developing, and procreating.
Through reproduction, organisms can pass on their traits, or identifying qualities, to their progeny.
Because there are numerous other individuals in a species who can successfully create offspring to maintain the species.
It is unlikely that the failure of one individual to reproduce will have an impact on the species as a whole. However, a species may go extinct if it as a whole is unable to procreate.
Therefore, type I species having few offspring.
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Why do scientists use Latin for the scientific names of organisms
Answer:
Scientist use Latin language for naming and classification because it is an ancient language and is not spoken in any region of the world also doing this reduces the chance of conflict between countries over using their native languages as base of classification which would be very unhealthy for a growing scientific environment.
Explanation:
what was the difference between mendel's work in the inheritance of traits and those done earlier?
There were many differences in ways of approach towards the experiment from Mendel and those before them.
Explanation:Gregor Johann Mendel is known as the father of genetics. He carried out a series of experiments which lead to the deduction of the 2 laws of genetics - the law of segregation and law of independent assortment.
But mendel was not the 1st person to carry out such experiments. But he was the only person who succeeded among them. This is because mendel has several differences from them im his experiments.
Firstly, he chose pea plants which has several easily noticeable characters and he concentrated on one characteristics at a time.
Secondly, he was lucky as the characters he chose were on different chromosomes.
Thirdly, he did his experiment neatly and carried out the artificial pollination with all care so that there's no contamination.
Lastly, he kept careful statistical record of the numbers and characters of progenies.
Which of the following investigations would likely increase the density of ocean water?
increasing freshwater in the ocean
increasing the melting polar ice
increasing the salinity of ocean water
increasing the temperature of ocean water
Answer:
increase the salinity
Explanation:
just makes sense
Increasing the salinity of ocean water would likely increase the density of ocean water because adding salt increases the number of molecules in the same volume, making it denser.
The question asks which of the following investigations would likely increase the density of ocean water. The density of ocean water is influenced by both its temperature and salinity. According to principles discussed in oceanography, lower temperature and higher salinity result in denser water. Water becomes denser in the poles due to the cold polar air cooling the water and the process of freshwater freezing out of seawater to form sea ice, which increases the salinity of the remaining water.
The correct answer is increasing the salinity of ocean water. This is because adding salt to water adds more molecules in the same volume, making it denser. In contrast, increasing freshwater in the ocean, melting polar ice, or increasing the temperature of ocean water would reduce the density of ocean water by either diluting the salt content or increasing the molecular movement due to heat.
A characteristic that allows an organism to survive better is called
Answer:
The characteristics of an organism that help it to survive in a given environment are called adaptations.
Explanation:
Different between sperm and ovum?
Answer:
1.Sperm is a male reproductive material that form at the onset of puberty.
2. Sperms are produce in immense amount.
3. Sperms are motile.
Explanation:
1. Ovum is produced in females which is called egg.
2. Ovum is nonmotile.
3. They are produced in limited amount in a process called ovulation.
how do basic trends in hominid evolution from early ancestors to modern human support the theory of evolution?
The basic trends in hominid evolution were terrestrial evolution, large brain, bipedalism, inclusion of meat protein in diet and civilization. These traits evolved over the time and found in modern human.
Explanation:
Hominid evolution is the trend of evolution from ancestors to modern human involving the five steps these are terrestrial evolution, large brain, bipedalism, inclusion of meat protein in diet and civilization.
Evolution is the term used for changes in characteristic features for natural selection or better survival and adaptation to the environment. The human share 99% of genetic sequence with chimpanzee, making the closer evolutionary relationship.
Evolutionary trend is a change in traits or character which results in significant change with time.
The idea of cooking the meat on fire is an example of increase brain size and evolution.
The evidences of bipedal locomotion was seen in several categories of early man studied in fossils show evolution in locomotion.
Bipedal locomotion is an example of transition of life from arboreal to terrestrial life hence terrestrial evolution.
The use of tools came in to existence leading to civilization and increase brain size.
The large energy requirement of brain tissue with increase in brain size meat was opted for fuelling the protein source.
Which of the following illustrates a complex virus?
Answer: d
Explanation:
Which term would be directly related to the science of ecology?
population density
circulatory system
genetics
taxonomy
last one i think?
Answer: population density
Explanation:
Yes! all because ecology seeks to understand the relationship between living organisms (plants, animals, microorganisms) and their environment while population density refers to the number of individual organisms in a unit area of space.
That is, Population density = Total population ➗ Area of habitat
Thus, population density is related and also a subset of ecology.
Kevin did not take biology or physical science in high school which means that he cannot pursue a career pathway and health and science
true or false
7. What patterns do you see in the DNA molecule?
Answer:
Each base pair is formed from two complementary nucleotides (purine with pyrimidine) bound together by hydrogen bonds. The base pairs in DNA are adenine with thymine and cytosine with guanine. DNA has a spiral staircase-like structure.
Explanation:
DNA molecule is a double helix, having four base pairs, that is adenine, guanine, thymine, and cytosine. Adenine pairs with thymine, and cytosine pairs with guanine.
• The discovery of DNA was done by Watson and Crick.
• DNA exhibits two strands or sides, and these strands are present in the form of a twisted ladder, giving it a look of a double helix.
• In the ladder, the sides constitute the sugar-phosphate parts of adjacent nucleotides bonded together.
• Covalent bonding is found between the phosphate of one nucleotide and the sugar of the next nucleotide.
• Between the phosphates, the hydrogen bonds make the strand of the DNA twist.
• The nitrogenous bases on the ladder are pointed inward and form pairs with the bases present on the other side.
• The complementary pairing of the bases is done, that is, purine pairs with pyrimidines with the help of hydrogen bonds.
• Pairing is done between adenine and thymine and between cytosine and guanine.
Thus, DNA is a double helical molecule having complementary base pairing, that is, purines with pyrimidines.
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