the process of making an exact copy of dna is called
Answer:
Replication
Explanation:
PLS HURRY
Why are fossils important to developing a theory of evolution?
Answer:
Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. ... Paleontologists can determine the age of fossils using methods like radiometric dating and categorize them to determine the evolutionary relationships between organisms
Explanation:
Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. ... Paleontologists can determine the age of fossils using methods like radiometric dating and categorize them to determine the evolutionary relationships between organisms
The preserved remnants or traces of extinct animals, plants, and other organisms are known as fossils. Because they demonstrate that earlier life on Earth was distinct from the life observed today, fossils are crucial pieces of evidence for evolution.
What is evolution?According to the idea of evolution, modern life forms have evolved from more ancient ones.
The original theory suggested that this occurred slowly and gradually, but fossil evidence suggests that the process occasionally went wrong and engaged in some very bizarre experiments.
Therefore, they demonstrate that earlier life on Earth was distinct from the life observed today, fossils are crucial pieces of evidence for evolution.
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Biology A Semester Exam
4 of 284 of 28 Items
You find a blog post written by a student on a university website about photosynthesis. Assess the reliability of this source.(1 point)
It may be reliable because the blog has been featured on a popular website.
It may be reliable because they cited multiple high-quality studies from scientific journals.
It may be reliable because other students verify the information in the blog.
It may be reliable because they cited other student blogs.
A student's post on photosynthesis can be reliable because he cited multiple high-quality studies from scientific journals.
When we research to show that a hypothesis or idea is true, we need to give it reliable support so that people who read our research trust the conclusions of our research, and it is considered as true knowledge.
To give reliable support to an investigation, it is necessary to resort to feasible arguments or true knowledge developed by researchers and specialists. For this, we must consult sources of reliable information.
Examples of reliable sources of information are:
International scientific journalsUniversity researchProven scientific evidenceSpecialized booksAccording to the above, what the student must do so that his publication is reliable for other students is to cite reliable sources so that the knowledge he is sharing is reliable.
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Answer:
IT may be reliable because they cited multiple high-quality studies from scincetific journals
Explanation:
Well, we know that this person knows their stuff and has been helpfull to others in the past!
let's give an example of a man, Jorge who has a reputation for helping others and donating to charity.
Tomorrow you're leaving for a week on a business trip and you need someone to watch your house, that is one truthful and is trusting.
We have Bob down the street that is a bloger and has many followers.
The mailman, Carson that everyone likes.
someone random online will watch the house.
Are you going to trust Jorge- the person who helps everyone
Bob- the bloger
Carson-the mailman or,
Someone random- watches houses, 30 bucks a day
YOUR GONNA TRUST JORGE!! Because he is the reliable and truthful man!
:> hope that helped you
loves you guys!
if cell x enters meiosis, and nondisjunction of one chromosome occurs in one of its daughter cells during meiosis ii, how will this affect the gametes at the completion of meiosis?
Answer:
c
Explanation:
Complete the following sentence: Environmental science can answer questions about _____________by analyzing and observing the world and testing ideas about it. physical laws moral values philosophy and art natural phenomena
Answer:
d
Explanation:
Environmental science can answer all the questions about natural phenomena by analyzing and observing the world and testing ideas about it. Thus, the correct option is D.
What is Environmental Science?
Environmental science is an interdisciplinary academic field of science which integrates different disciplines such as physics, biology, and geography to the study of the environment as a whole, and the solution of environmental problems. Environmental science has emerged from the fields of natural history and medicine during the Enlightenment period.
Environmental science has the ability to answer all the questions about the natural phenomena by the analysis and observation of the world and by testing the ideas about it.
Therefore, the correct option is D.
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Why is RNA thought to have been the first genetic material? A. RNA has been found on meteorites. B. Primitive organisms, such as some viruses, have RNA as their genetic material. C. RNA is capable of self-replication D. RNA is structurally simpler than DNA.
Answer:
B.
Explanation:
Because if they have traces of RNA in them, then it might be the first genetic material
How can you determine if a bacterium is being killed by an antibiotic or if its growth is simply being inhibited
Answer:
"You need to take a swab from the zone of inhibition and use it to inoculate a new plate without the antibiotic. If the organism grows then it was simply held in a static state by the antibiotic."
Explanation:
need help on this question!!!
Answer:
I think it's The Kingdom
how do mitochondria generate and store the energy used to produce most of the atp made during aerobic respiration
Answer:
The citric acid or Krebs cycle processes in the matrix of mitochondria produce a molecule called NADH. NADH is then converted to adenosine triphosphate by enzymes buried in the mitochondrial inner membrane (ATP). Energy is stored in the form of chemical bonds in ATP.
Explanation:
During aerobic respiration, how is ATP created in the mitochondria?Oxidative phosphorylation produces the majority of the ATP produced by aerobic cellular respiration. By pumping protons across a membrane, the energy released by the O2 is utilized to create a chemiosmotic potential. This potential is subsequently used to activate ATP synthase, which converts ADP and phosphate groups into ATP.
What is the mechanism by which mitochondria store energy?Mitochondria (plural: mitochondrion) are membrane-bound cell organelles that provide the majority of the chemical energy required to fuel the cell's metabolic activities. Adenosine triphosphate is a tiny molecule that stores chemical energy created by mitochondria (ATP).
What is ATP's energy storage mechanism?The energy currency of the cell is ATP, or adenosine triphosphate. It retains the energy created during cellular respiration when glucose is oxidized. Energy is stored in the form of high-energy phosphate bonds, which are broken to release energy. Energy is released when ATP is broken down into ADP and Pi.
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Water reacts with sodium metal to produce sodium hydroxide and hydrogen
gas, along with heat and light. What are the reactants in this chemical
reaction?
Which would be least likely to be affected by a density-dependent limiting 4
factor?
O a small population of tigers scattered across a wide area
O a rapidly reproducing population of bacteria
a large, dense population of fish in a pond
a population of birds with a high immigration rate
Answer: a small population of tigers scattered across a wide area
Explanation:
Hope this helps
Answer:
The answer is a. a small population of tigers scattered across a wide area
PLLLSSS HELP ME I WILL GIVE BRAINIEST
in the Fall of the year, leaves appear red, orange, yellow and brown because the chlorphyll decreases in the leaves and allows the --(blank)-- pigments to reflect mostly colors other than green.
possible answers than can go in the blank are primary or accessory
The appropriate word to fill into the blank would be accessory.
In the Fall of the year, leaves appear red, orange, yellow, and brown because the chlorophyll decreases in the leaves and allows the accessory pigments to reflect mostly colors other than green.
The core pigment in leaves that makes them appear green is chlorophyll. The pigment is primarily responsible for absorbing light energy to drive the photosynthetic process in plants.
Some other pigments, also known as accessory pigments such as carotenoids, anthocyanins, xanthophylls, etc., help out chlorophyll in some ways but have colours that are different from green.
Thus, the appearance of other colours such as orange, yellow, brown, etc., on leaves is due to a decrease in chlorophyll and the reflection of the colours of the accessory pigments.
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What are 4 characteristics of a non renewable source
Answer:
There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy.
Explanation:
describe in detail, the pathway of an oxygen molecule as it moves from the air outside your body, into your blood and to cell in a muscle in your arm
Answer:
The oxygen molecule enters the human body from the mouth or nose and reaches the phraynx and then the larynx, trachea and the bronchus. It then enters the lungs which then the red blood cells takes the oxygen from the blood and carries it to the muscle in the arm.
The pathway of an oxygen molecule from the air outside your body to a muscle cell in your arm involves several sequential steps, including inhalation, gas exchange in the lungs, transportation through the bloodstream, and diffusion into muscle cells.
During inhalation, you breathe in air through your nose or mouth. The air travels through your respiratory system, passing through the trachea (windpipe) and into the bronchi, which branch into smaller tubes called bronchioles. Eventually, the inhaled air reaches the alveoli, tiny air sacs located at the end of the bronchioles in the lungs.
In the alveoli, oxygen molecules diffuse across the thin walls of the air sacs and into the surrounding capillaries. Oxygen diffuses from an area of higher partial pressure (in the alveoli) to an area of lower partial pressure (in the capillaries). Hemoglobin, a protein within red blood cells, binds to the oxygen molecules in the capillaries, forming oxyhemoglobin.
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The picture shows a model of a cell.
Answer:
What is showing is called a Chloroplast. They help the plant capture sunlight energy. So 'B' is the answer.
Explanation:
Answer:
B's your answer.To use energy from sunlight to make sugars
A laboratory cat could be made to twitch its whiskers by direct stimulation of the ________ lobes of the cerebral cortex.
DNA is coded to RNA, which must travel from the nucleus to the cytoplasm to be read. Why does the cell need to transcribe the DNA into RNA rather than copying the DNA directly?(1 point)
DNA requires too much energy to code; building RNA is more efficient.
DNA cannot be copied; it must be translated to RNA and then back to DNA.
DNA is double stranded and cannot fit through the nuclear membrane; RNA is single stranded.
DNA cannot be read by ribosomes; they can only read RNA.
Answer:DNA is double stranded and cannot fit through the nuclear membrane; RNA is single stranded.
Explanation:
DNA is double stranded and cannot fit through the nuclear membrane; RNA is single stranded. DNA could get damaged because of the osmotic nature of cytoplasm. Therefore, option (C) is correct to mitigate he damage.
What is transcription?The proteins are produced by cells by the transcription and translation of certain genes from their DNA into molecules of messenger RNA (mRNA), chains of amino acids, and finally fully functioning proteins.
The DNA would need to go to the cytoplasm in order to directly make proteins. Because of the osmotic properties of cytoplasm, DNA may become damaged during the translocation process. The cellular machinery does not directly make proteins from DNA in order to reduce the harm.
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a red onion cell has undergone a change, as represented in the diagram below. This change is most likely due to the cell being placed in...
A red onion cell placed in a saline solution will lose water when water moves from the cell to the surrounding hypertonic medium via osmosis, causing the cell to shrivel up.
What is osmosis?The passage of solvent molecules from a lower concentration solution to a higher concentration solution across a semipermeable membrane. It is a passive process that occurs without the use of any energy.
Solvent molecule transfer proceeds from low to high concentration regions until the concentrations on both sides of the membrane are equal.
What are the types of osmosis?An isotonic solution contains the same solute concentration both within and outside the cell.A hypertonic solution has a larger solute concentration outside than inside the cell.A hypotonic solution contains a larger concentration of solutes inside the cell than outside.Thus, we can conclude that when a red onion cell is placed in salt water.
As we can see in the diagram the onion cell shrink which means it is placed in salt water which is a hypertonic solution.
So, option (3) salt water is correct.
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Does venueles carry bright red color?
Answer:
No
Explanation:
Arteries typically carry oxygenated blood, which is bright red in colour. The exception is the pulmonary artery which carries deoxygenated blood from the heart to the lungs.
Answer:
Venules carry deoxygenated blood. All blood in humans is bright red when oxygenated, but, a darker red when deoxygenated. Deoxygenated blood is darker due to the difference in shape of the red blood cell when oxygen binds to haemoglobin in the blood cell (oxygenated) versus does not bind to it (deoxygenated).
Explanation:
*sigh* its just how science do
I need to know FAST
The failure of homologous chromosomes to separate properly during meiosis
s called
a. Hondisjunction
C. Autosomnes
b. Crossing Over d. Karyotype
Answer:
Nondisjunction
Explanation:
Nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate during meiosis, resulting in an abnormal chromosome number.
Research endangered marine mammals of ocean and polar ecosystem. Write a 100or more words on the factors that have caused this mammals to become endangered.
Answer: hunting and capture by humans
Explanation: Principal anthropogenic threats to the survival of marine species include fisheries interactions (entanglement in nets and lines), hunting and capture by humans, ship strikes, pollution and habitat degradation, and climate change.
What happens yo DNA as the cells prepares to divide
DNA Synthesis
In preparation for cell division, the cell makes a replica of its entire DNA. This happens during the S, or synthesis, phase of the cell cycle. Mitosis is the division of one cell into two cells that each has a nucleus and the same amount of DNA as the original cell.
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Is light an essential condition for germination ?
why or why not ?
gamsahamnida
Answer:
No
Explanation:
Conditions necessary for germination are :
Temperature/Warmth
Oxygen/Air
Water/Moisture
what is the space between the presynaptic and postsynaptic membranes?
Answer:
The synapse at the neuromuscular junction has three characteristic features of chemical synapses in the nervous system. First, there is a distinct separation between the presynaptic and the postsynaptic membrane. The space between the two is known as the synaptic cleft.
Explanation:
Hey this doesn’t make sense to me
Answer and Explanation:
The question is asking you any ingredients which are plants but contains in a pizza. It also said that it could include plants that are fed to animals so for example, beef is on top of the pizza then you can write grass.
why do x-linked conditions appear more frequently in males than in females?
Answer:
Because, with females, who have two x-chromosomes, meaning both parents (mother and father) have to pass down alleles for the condition, and males only need one parent (mother) to pass down the condition for the male to have the mutation
X-linked conditions appear more frequently in males than in females because:-
In males there is only one X chromosome.Any X linked condition will appear in males as there will no other X chromosome to dominate it.In female there are two X- chromosome. If any one of the two X chromosome has defect other chromosome will dominant it and will the female will act as a carrier.What are X linked disorder?X-linked disorders are caused by variants in genes on the X chromosome, one of the two sex chromosomes in each cell. In males who have only one X chromosome, an alteration in the only copy of the gene in each cell is sufficient to cause the condition.
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An environmental factor such as storms and extreme heat or cold that affects
population regardless of their density
Answer:
density-independent factor
Explanation:
density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).
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An environmental factor such as storms and extreme heat or cold that affects population regardless of their density are known as density- independent factors.
What are density- independent factor?Density- independent factors are type of limitation factors that affects the population size in specific environment regardless of the density of that population.
Density of population can be defined as number of individuals per unit area.
Here storms and extreme heat are the limiting factors that reduces the population size regardless pf their density.
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The kind of gene whose product interacts with other nucleotide sequences to affect their transcription or translation is a _____ gene.
Answer:
constitutive gene.
Explanation:
i went to 6th grade
What would happen if I jump out of a plane without my parachute
Answer:
umm you would not live
Explanation:
Cyanidin is a compound that is sensitive to pH. Cyanidin is found in plants such as hydrangeas, cornflowers, and the vegetable rhubarb. Cornflowers are blue because the cornflowers sap is basic and cyanidin turns blue in the presence of bases. Rhubarb contains an acid called oxalic acid. This affects the cyanidin and causes the red color found in rhubarb. Other plants that contain cyanidin are cherries, raspberries, and strawberries. What does the above information infer about cherries, raspberries, and strawberries?
Answer:
their colours are basically on the acidic and basic content of their cell sap in reaction with the cyanidin