Knowledge is created through the process of science. Both thorough observation of occurrences and the creation of theories to explain those observations are essential to the process. Knowledge will always change since new observations could refute accepted ideas. No matter how well one theory explains a given collection of observations, it is always feasible that another theory will fit the same set of observations just as well, better, or across a larger range.
The majority of scientific knowledge is enduring, despite the fact that scientists reject the idea of discovering perfect truth and accept some doubt as a component of nature. Science typically modifies ideas rather than rejects them completely because strong theories are more likely to endure, advance in accuracy, and gain widespread acceptance. For instance, when developing the theory of relativity, Albert Einstein did not completely reject the Newtonian laws of motion but rather demonstrated that they were only a rough approximation with a more general concept.
This seems like a strange restriction because it is obvious that both modern science and the majority of earlier science is a social activity. For information, samples, techniques, and many other things, scientists depend on one another. Their interactions are occasionally competitive and frequently cooperative.
to know more about science visit
https://brainly.com/question/12842883
#SPJ1
What kind of information can scientists learn from different types of fossils? Select all that apply.
A- how long ago the organism lived
B- the dimensions of the organism
C- how fast the organism moved
D- how the organism looked in real life
Scientists learn about how long ago the organism lived, it's dimensions, how it looked like and how fast it moved after studying different types of fossils. Thus, all options are the answer.
Fossils are the dead, decayed remains of any animal, plant or any other living organism. Currently, scientists are studying dinosaur fossils as well as the fossils of any plant or animal that lived long ago in those ages when humans weren't there.
By studying these, scientists get a better idea about such organisms. They are able to imagine what the creature might have looked like or how it might have survived back then. Hence, they learn all of this by studying the fossils.
Learn to know more about Fossils on
https://brainly.com/question/6867325
© 1. What type of cell is this? What characteristics helped you decide the type of cell? (Identify form/structure.) What is this cell's function?
This is a nerve cell that aids the nervous system. offer structural support for the body, ingest nutrients from meals, transform those nutrients into energy, and perform specific tasks.
What function do nerve cells fulfill?Your brain's neurons, also known as nerve cells, transmit and receive signals. Neurons are morphologically and functionally unique from other cell types, yet having many traits in common with them. Axons are specialized extensions that allow neurons to send electrical and chemical signals to neighboring cells.
What is the nerve cell's structure?One long extension (axon) for sending impulses and typically several branches (dendrites) for receiving impulses make up the big cell body that makes up a nerve cell (or neuron). The dendrite of one cell receives impulses from the axon that travel across a synapse, or the junction between two nerve cells.
To know more about nerve cells visit:
https://brainly.com/question/2681723
#SPJ1
4. The radiometric dating of an igneous rock provides
•
the date the rock was eroded
•
the date of Earth's formation
O
the date of the rock's formation
the relative age of the rock
The radiometric dating of an igneous rock provides the relative age of the rock
What is radiometric dating ?
Radiometric dating, radio dating, or radioisotope dating, is a technique used to date materials such as rocks and carbon that are selectively incorporated when minute amounts of radioactive contaminants are formed. This method compares the abundance of a naturally occurring radioisotope in a material with the abundance of its decay products formed at a known constant decay rate. First published by Bertram Boltwood in 1907, the use of radiometric dating is now the primary source of information regarding the absolute age of rocks and other geological features, including the age of fossilized life forms and the age of the Earth itself. is the source. Used to date his one wide range of natural and man-made materials.
To know about radiometric dating from the link
https://brainly.com/question/883124
#SPJ13
Select the correct answer.
When do scientists consider a hypothesis valid?
A.
when the hypothesis is testable
B.
when the hypothesis is published in a scientific journal
C.
when more than one person supports the hypothesis
D.
when experimentation shows it to be true
Answer:
A.
Explanation:
It must be testable and it must be falsifiable. If a hypothesis cannot be tested by making observations, it is not scientific.
For mammals living in cold habitats, would smaller or larger species require relatively thicker fur?.
Answer: Smaller species would have a greater need for thicker fur
Explanation: Bigger animals have a bigger surface area to volume ratio meaning they will not lose heat to the outside as much as a smaller animal who would have a smaller ratio. I think that would mean that the smaller animal would be in greater need of a thicker coat to help them stay warm.
What is a glycoprotein? where are they found in human cells? list some of their functions.
They are molecules that consists of protein and carbohydrate chains which are involved in many physiological functions including immunity.
Glycoprotein consists of protein and carbohydrate which are involved in physiological function and also helps in immunity . They are excreted from inside the cells that express their genes and pushed to the surface.
Glycoprotein helps in many physiological functions like reproduction ,protection of cells of organism , balancing immune system . They are present on the surface of the lipid bilayer of cell membrane .In human they helps the organ system to communicate with each other and in plant they allow plants to stand upright against the force of gravity.
To learn more about Glycoprotein , here
brainly.com/question/15007631
#SPJ4
Rock formed deep underground where heat and pressure
cause existing rocks to be changed
- Sedimentary rock
- Energy
- Igneous rock
-Metamorphic rock
- Rock cycle
Answer: Metamorphic rock
What enzyme moves outward from the origin of replication and breaks hydrogen bonds between dna nucleotides?.
As the helicase moves away from the point of origin, it breaks hydrogen bonds between DNA nucleotides.
What enzyme splits DNA before the replication process begins?Helixases are enzymes that bind to and may even modify nucleic acid or nucleic acid protein complexes. Both helicases for DNA and RNA are available. DNA helicases are required for DNA replication as they separate double-stranded DNA into single strands, allowing for the independent replication of each strand.
Which enzyme precedes DNA helicase during DNA replication?In procaryotes, the primase molecule and a DNA helicase come together to create a structure called a primosome on the lagging strand.
To know more about Helicase visit:-
https://brainly.com/question/24162487
#SPJ4
_____ on mrna interact with _____ on trna to allow the _____ to connect amino acids in the correct order during translation.
The proper succession during translation. ribosome, codons, and anticodons.
What substance acts as the adaptor, connecting the amino acids and mRNA during translation?RNA small molecule Transfer RNA, also referred to as tRNA, is necessary for the synthesis of proteins. Transfer RNA, also known as an adapter, links the messenger RNA (mRNA) molecule to the growing chain of amino acids that constitutes a protein.
In this translation quizlet, we will examine how the amino acids are connected.In a certain order determined by genes, amino acids form peptide bonds and join together. The length and arrangement of the amino acid chain determines the three-dimensional structure of a polypeptide or protein after RNA translates genes into amino acid chains.
To know more about amino acids and mRNA visit:-
https://brainly.com/question/20552252
#SPJ4
Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment?.
The recombination frequency corresponds to perfect linkage and violates the law of independent assortment is 0.
Mendel's law of unbiased collection states that the alleles of two (or more) specific genes get sorted into gametes independently of each other. In different phrases, the allele a gamete gets for one gene does not affect the allele received for every other gene.
Independent collection is the procedure in which the chromosomes move randomly to separate poles at some point in meiosis. A gamete will grow to be with 23 chromosomes after meiosis, however independent collection manner that every gamete could have 1 of many extraordinary mixtures of chromosomes.
Learn more about independent assortment here:-https://brainly.com/question/2376592
#SPJ4
a How does a mutation in a sex cell differ from a mutation in a non-sex cell?
A. Mutations in sex cells only affect offspring.
B. Mutations in sex cells are silent mutations.
• c. Mutations in sex cells are more deadly.
D. Mutations in sex cells are chromosomal mutations.
Answer:
a
Explanation:
The process of chromosomes independent assortment takes place during?
Answer:
Anaphase of Meiosis I
Explanation:
The independent assortment of chromosomes takes place during the Anaphase of Meiosis I .
Related info :-
Law of Independent assortment was given by G J Mendel .This law was was based on the results of dihybrid cross .This law is applicable only when two genes under consideration are on different chromosomes.This law is one of the most criticized law in genetics ( exception is linkage.)What phase of the cell cycle are chromosome pairs separated by the retraction of spindle fibers?.
Anaphase phase of the cell cycle are chromosome pairs separated by the retraction of spindle fibers.
Chromosomes come in pairs. normally, each cellular inside the human body has 23 pairs of chromosomes (46 overall chromosomes). half come from the mother; the other half come from the daddy. two of the chromosomes (the X and the Y chromosome) determine your intercourse as male or lady while you are born.
Each pair incorporates chromosomes, one coming from each determine, because of this that children inherit half in their chromosomes from their mom and half from their father. Chromosomes can be seen thru a microscope while the nucleus dissolves at some stage in mobile department.
Haploid describes a cell that incorporates a unmarried set of chromosomes. The time period haploid can also discuss with the number of chromosomes in egg or sperm cells, which might be additionally referred to as gametes. In human beings, gametes are haploid cells that include 23 chromosomes, every of which a one in all a chromosome pair that exists in diplod cells.
Learn more about chromosome pairs here:
https://brainly.com/question/16391817
#SPJ4
which compares the effectiveness of methane and nitrous oxide as a greenhouse gas with that of carbon dioxide
Answer:
CO2 stays in the atmosphere for up to 1,000 years, methane for around a decade, and nitrous oxide for approximately 120 years.
Explanation:
Measured over a 20-year period, methane is 80 times more potent than CO2 in causing global warming, while nitrous oxide is 280 times more potent. 4.
Please select the word from the list that best fits the definition
a kind of foliated metamorphic rock
The word form the list that best fits the definition of "a kind of foliated metamorphic rock" is "NonFoliated" (Option D.
What is a non-foliated metamorphic rock?Nonfoliated metamorphic rocks form near igneous incursions when temperatures are high but pressures are modest and equal in all directions. Non-foliated metamorphic rocks have no layered or banded surface, such as hornfels, quartz, quartzite, and novaculite.
Because not all parent rocks feature platy or elongated minerals, the individual mineral grains do not align during metamorphism. Marble, quartzite, and hornfels are examples of non-foliated metamorphic rocks.
Foliated rocks feature minerals that are platy or elongate and are oriented in generally parallel planes or wavy bands or planes. Nonfoliated rocks may have colorful bands that reflect minute impurities in the rock, but there is no obvious alignment of the dominating minerals.
Learn more about metamorphic rocks:
https://brainly.com/question/19930528?
#SPJ1
Full Question:
Please select the word from the list that best fits the definition of layered metamorphic rocks:
FoliatedIgneous RocksMetamorphic RocksNonfoliatedSedimentary RocksWhat is an example of a positive punishment. . Neither A or B . Taking away your cell phone C. Cutting off your allowance
Answer:
cutting off your allowance
I need help with 4,5 and 6
Answer: 4- genotype- 50% hybrid & 50% possesive
phenotype- 50% red & 50% white
5- genotype- 100% possesive
phenotype- 100% white
6-genotype- 100% dominant
100% black
Explanation: picture attatched for more info!!
Researchers found e. Coli that had mutation rates 100 times higher than normal. What is a possible explanation for these results?.
Possible explanation for these results is that the proofreading mechanism of DNA polymerase was not working properly.
How is the proofreading process explained?Proofreading mechanisms are crucial for reducing the rate of mutation in a newly generated DNA molecule during DNA replication.
DNA polymerase 3 reads the daughter DNA strands in a 3" to 5" orientation by exonuclease activity, which is how the proofreading activity is carried out.
Incorrect bases are excised and replaced with the right bases by DNA polymerase 3's proofreading activity if they are discovered in the daughter DNA molecule.
Therefore, proofreading aids in reducing the mutation rate in freshly generated DNA molecules.
TO know more about proofreading mechanism visit:-
https://brainly.com/question/22081365
#SPJ4
2.
In the figure below, B, C and D together are called?
Label the parts of the cell cycle diagram and briefly ...
mitosis
prophase
interphase
synthesi
Answer:
we need you to add an image of the diagram please :)
Explanation:
:)
The two strands of a dna double helix are antiparallel. This means that __________.
The two strands of DNA double helix are antiparallel , this means that if one strand is the direction 5'-3' then other will be 3'-5'.
What is DNA double helix and what does it mean for the DNA to have anti parallel polarity?DNA is deoxyribonuclic acid , which makes up the genetic complement of the human body of which gene is the smallest unit.DNA double helix is the structure or model of DNA discovered by Watson and Crick based on several observations.DNA is 2.2 meter long and is made of two strands helically wounded with each other in a right handed fashion.The two strands of DNA double helix are anti parallel , this means that is one strand of DNA is in the direction 5'-3' then other strand would be 3'-5' .Each strand of DNA consist of 200 base pairs and adenine binds with thymine with two hydrogen bonds.To know more about DNA visit:
https://brainly.com/question/264225
#SPJ4
Which type of movement across a cell’s plasma membrane requires energy supplied by atp?.
Answer:
Active transport
Explanation:
The cell membrane is the outermost part in animal cells. This structure has function to regulate the movement of molecule as coming in and out of cells.
The mechanisms of this movement are classified into passive transport (diffusion, osmosis) and active transport.
The difference among of them are the movement direction and the energy consuming.
The direction of diffusion and osmosis is from higher concentration to lower concentration so that it doesn’t requires energy and only rely on the kinetic energy.Conversely, the active transport is the movement that against the gradient concentration, from lower concentration to higher concentration so that need energy. The energy is obtained from respiration is in form ATP (adenosine triphosphate)Learn more about active transport at https://brainly.com/question/11871412
#SPJ1
A bacterium that has received recombinant dna containing the gene for human insulin will.
A bacterium that has received recombinant DNA containing the gene for human insulin will produce human insulin along with the other proteins it normally produces
What is recombinant DNA ?A common bacterium's genetic code could be altered to include a human gene thanks to a technique called recombinant DNA. This "recombinant" microbe might now make the protein that the human gene codes for. In a lab, researchers create the human insulin gene. By using fermentation in microorganisms and recombinant DNA technologies, "recombinant human insulin" became widely accessible (bacteria or yeast). In comparison to semisynthetic insulin, recombinant insulin has a higher level of purity and a more reliable quality. One of the first products of biotechnology was recombinant human insulin. It was created in response to the requirement for an ongoing and adequate global supply. The semisynthetic insulins created by modifying animal insulins and the animal insulins themselves were superseded by recombinant human insulin, after being correctly detected,
So, the human insulin will produce human insulin along with the other proteins it normally produces.
To know more about RECOMBINANT DNA visit the link given below,
https://brainly.com/question/28548203
#SPJ4
Which of the following do you expect if an individual is heterozygous for the sickle-cell trait? see concept
A. they will not develop sickle-cell disease
B. they will show some symptoms of the disease because the allele that causes sickle-cell disease is not really recessive
C. they will be more apt to acquire a serious case of malaria
D. they will have full-blown sickle-cell disease because the allele is dominant
E. none of the listed choices are correct
If an individual is heterozygous for the sickle cell trait, they will show not develop sickle cell disease. Option A.
Sickle Cell DiseaseSickle cell anemia is a disease of the blood that is homozygous and recessive. Consequently, an individual needs to have two copies of the recessive allele in order to be affected by the disease.
Now, if an individual is heterozygous for the sickle cell allele, it means such an individual has only one recessive allele which is not enough for the disease to be expressed.
This is why individuals that are heterozygous for the sickle cell trait don't show symptoms of the sickle cell disease. Instead, they enjoy a hybrid vigor that confers malaria resistance. Hence, they do not have malaria as often as those that are homozygous dominant.
Homozygous recessive traits are different from dominant traits. In the latter, only a copy of the allele is needed to be dominant, at least, in order for the trait to be expressed.
More on sickle cell anemia can be found here: https://brainly.com/question/876359
#SPJ1
GIVING BRAINIEST IF ANSWERED CORRECTLY AND IN OWN WORDS!!!!
3-5 sentences summarizing Hans Adolf Krebs accomplishments.
Answer:
Hans Adolf Krebs is a german born biochemist. Along with Fritz Lipmann he had received the 1953 Nobel Prize for physiology or medicine in discovery in living organisms of chemical reactions known as tricarboxlyic acid cycle. In 1932 along with biochemist Kurt Hellenist Krebs discovered what is now known as the urea cycle ( ammonia is converted to urea in mammalian tissue. The discovery of the tricarbolyic acid cyclecycw was a vital importance to a basic understanding of microbiology.
Please help with this problem
Answer:homozygous dominant, heterozygous and homozygous recessive
Explanation:
RR is homozygous dominant, 2Rr are heterozygous and rr is homozyqous recessive
day in life of a squirrel. what would that squirrel need to accomplish for survival?
grade 6
This body part in squids allows them to propel themselves rapidly by sucking in through the mantle and out through the ___________.
This body part in squids allows them to propel themselves rapidly by sucking in through the mantle and out through the funnel.
Squids have a method for propulsion.Squids use the same technique they use to move through the water to propel themselves out of it: they fill up their mantle with water and then force it out at extremely high pressures and speeds.
Squids move their bodies in what ways?the tail fin Muscle makes up the paired tail fin, which is linked to the mantle's upper surface. Through longitudinal fin undulation, the enormous squid propels itself forward through the water.
Through precise jet propulsion, the squid moves through the funnel. When using this mode of propulsion, water is pulled into the mantle chamber and quickly ejected from the funnel.
To know more about propulsion visit:-
https://brainly.com/question/13757534
#SPJ4
classify each of the defense mechanisms as a physical barrier, innate immunity, or adaptive immunity. drag and drop each mechanism to the appropriate category.
a. B cells
b. Collectins
c. Stomach acid
d. Cilia in the respiratory tract
e. Earwax
f. Fever
g. Complement system
h. Antibodies
i. T cells
j. Inflammation
k. Interferons
l. Unbroken skin
1. Physical barrier
2. Innate immunity
3. Adaptive immunity
The classifications of the defense mechanisms of the body are as follows:
Physical barrier
Cilia in the respiratory tractEarwaxUnbroken skinInnate immunity
CollectinsStomach acidFeverComplement systemAntibodiesInflammationInterferonsAdaptive immunity
T cells B cellsWhat is the defense mechanism of the body against disease and infection?The defense mechanism of the body refers to the various ways the body's immune system protects the body against diseases and infections.
The defense mechanisms of the body include:
a physical barrier - e.g skininnate immunity - e. adaptive immunity - e.g.Learn more about adaptive and innate immunity at: https://brainly.com/question/13927078
#SPJ1
The most common isotope of uranium has an atomic number of 92 and mass number of 238. If a uranium atom alpha decays and emits a helium nucleus, what will the atomic number of the daughter nucleus be?.
If a uranium atom alpha decays and emits a helium nucleus, the atomic number of the daughter nucleus is 90.
Alpha particle is a helium nucleus thus decay of alpha particle is decay of 42He
42He = α with emission of helium nucleus emit energy (Q)
Thus mass number decreased by 4 and atomic number decreased by 2 of daughter nucleus.
Alpha decay represented by
AZX → A-4Z-2Y + 42He + Q
So alpha decay of U-238 represented by
23892U → 23490Th + 42He + Q
After alpha decay of U-238 formed daughter nucleus Th – 234 and He -4
Atomic number of daughter nucleus = 90
With the atomic number 92 and the chemical symbol U, uranium is one of the elements. The actinide series of the periodic table contains this silvery-gray metal. 92 protons and 92 electrons, of which 6 are valence electrons, make up one uranium atom .
Learn more about uranium atom here:
https://brainly.com/question/8991357
#SPJ4
describe the basic functions of animal body system
The basic functions of the animal body system are regulation of the internal environment (homeostasis), nutrient absorption, reproduction, and defense against injury or illness.
Homeostasis:
A biological system's tendency to preserve stability while responding to conditions that are best for survival is known as homeostasis. If homeostasis is achieved, life continues; if it is not, tragedy or death results.
Nutrient absorption:
The upper small intestine's hollow serves as a reservoir for absorbed food molecules, water, and dietary minerals. The majority of the absorbed substances penetrate the mucosa into the blood and are transported there by the bloodstream to other body areas for storage or additional chemical alterations.
Reproduction:
The process of producing off-springs that are biologically or genetically similar to the parent organisms is known as reproduction. Reproduction allows and ensures the continuity of species, it's the main feature of life on earth.
Defense against injury or illness:
So it is the smart body system that helps defend against illness is called immune power. The immune system is created of a network of cells, tissues, and organs that employ along to shield the body.
To know more about animal body systems:
https://brainly.com/question/25897306
Regulation of the internal environment (homeostasis), food intake, reproduction, and protection against harm or illness are the fundamental bodily processes of animals.
What does the animal body system do?Homeostasis refers to a biological system's propensity to maintain stability while reacting to circumstances that are most conducive to survival. Life continues if an equilibrium is attained; if not, catastrophe or death occurs.
Food molecules, water, and dietary minerals are stored in the hollow of the upper small intestine. Most compounds that are absorbed pass through the mucosa into the blood and are then carried by the bloodstream to other body parts for storage or further chemical changes.
Reproduction is the process of creating offspring that are biologically or genetically similar to the parent organisms. The primary characteristic of life on earth is reproduction, which enables and secures the continuation of species.
Thus, these are the functions of the animal body system.
To learn more about an animal body system, refer to the link:
https://brainly.com/question/18243651
#SPJ2
