Answer:
b. Early RNA molecules were able to self-replicate, which helps to explain why all organisms share the same genetic code
Explanation:
The RNA world hypothesis is an evolutionary theory that indicates the RNA-living forms were produced first before the appearance of DNA and proteins. This hypothesis is supported by the fact that RNA is capable of reproducing on its own (like DNA), and also is able to catalyze chemical reactions (like protein enzymes). The RNA world hypothesis states that this RNA world was then followed by the evolution of ribonucleoproteins.
Answer:
the correct answer is B
Explanation:
i took the test and got it right
Protei
Using what you have learned about carbon bonds
and energy in this lesson what can you say about
the amount of carbon bonds in this food
component compared to the amount of carbon
bonds in the other two food components? Why?
I
RETRY
Answer:
The correct answer would be -
Fat produce greater energy than the carbohydrates and protein.
due to the facts fats and proteins both have carbon bonds
Explanation:
Fat have highest number of carbon bonds in comparison of the amount of the carbon bonds present carbohydrate and protein and similarly protein have greater number of carbon bonds
Digestion of the fats provides the most energy per gram, due to the fact that more carbon bonds to break. Protein as well gives the higher energy per gram if compared to carbohydrates.
Thus, the correct answer is -
Fat produce greater energy than the carbohydrates and protein.
due to the facts fats and proteins both have carbon bonds
Answer:
Fat
Explanation: (answer for second part)
The amount of carbon bonds in fat is much greater than the amount in carbohydrates and proteins. Fats give you the most energy per gram, so there must be more carbon bonds to break, thereby releasing more energy.
Pick one level of organization smaller than an organism,
and describe how that level works with the others to support
the organism and keep it alive.
Answer:ddndbdjd
Explanation:d
Hdbdndndnmddkjdjdjdidd
An athlete is injured on the field. His teammates see that the injury is moderately swollen, and the athlete reports that the area is numb. What is the first thing that his teammates should do?
A.
test whether he can put weight on the area
B.
protect the athlete from further injury
C.
apply a compression wrap to the injured area
D.
ice the injured area for five minutes
What is the smallest number of nucleotides that must be added or subtracted to change the triplet grouping of the genetic message?Group of answer choices
Answer:
The correct answer is - one.
Explanation:
A triplet code or triplet grouping of the genetic message is a code that carries the genetic information and help in providing the enough information in the DNA to arrangement of all 20 amino acid. It can make 64 cobinations of genetic code by just triplet code.
Adding or subtracting the one nucleotide of the triplet code would change the genetic code or message and cause mutation or leads to different amino acid and protein.
Thus, the correct answer is- one.
The wild type of allele for a gene has more pairs than the mutated form of allele what type of mutation A. a base pare of deletion B. base pair substitution C. base pair seperation D. base pair insertion
Answer:
A. a base pare of deletion
Explanation:
A base pair deletion is a mutation where one nucleotide is removed during DNA replication. The base-pair deletions produce frameshift mutations, i.e., they cause genetic modifications that alter the Open Reading Frame (ORF) of the corresponding protein. Examples of human diseases caused by deletion mutations include, among others, cystic fibrosis and Williams syndrome.
During strenuous exercise, Max's body produces lactic acid and his blood pH begins to decline. His kidneys go to work to preserve acid-base balance by doing all of the following EXCEPT __________.
a. reabsorbing bicarbonate
b. generating new bicarbonate
c. reabsorbing hydrogen
d. secreting hydrogen
Answer:
c. reabsorbing hydrogen
Explanation:
In this scenario, the individual's kidneys will do all of the following except for reabsorbing hyrdogen. This is because, in a scenario like this where the body pH levels decline the kidneys begin to secrete hydrogen, they do not reabsorb it. It is this process of acid elimination that ultimately causes the body's pH levels to begin rising and restoring themselves to normal. Therefore the answer to this question is c.
Which of the following is true about ischemic stroke? a. Often caused by emboli from the basilar arteries b. Has risk factors that include atherosclerosis c. Can be a result of a hypercoagulable state d. Results from hemorrhage into brain tissue Is associated with acute hypertension
Answer:
b. Has risk factors that include atherosclerosis
Explanation:
Ischemic stroke happens when there are underlying factors such as atherosclerosis. Atherosclerosis is caused by clogging of fat and cholesterol in the blood vessels. The reduction in the flow of blood to the brain is usually as a result of blood clumping together and blocking the blood vessels carrying blood to the brain.
The symptoms of ischemic stroke include dizziness, loss of coordination, headache etc.
If short hair (L) is dominant to long hair (l), then what fraction of the offspring produced by a cross of Ll x ll will have long hair
Answer:
The answer is 50%.
Explanation:
If we cross the two genotypes given in the question as Ll and ll, we can see that 50% of the offspring will have Ll as the genotype and the other 50% will have ll as the genotype.
Since L is the dominant gene, all the Ll genotypes will have long hair as a result of the dominant gene.
I hope this answer helps.
Hypothesis statement that includes an independent and dependent variable
Answer:
Best and easiest way is an "If, then" statement.
e.g. If there is no rainfall, then the plants will die.
Explanation:
Which type of protein will fight disease?
Answer:
Antibodies help you immune system.
Answer:
The answer is B
Explanation:
The evolution from vesicles to true cells was best facilitated by the development of (2 points) a membrane separating the cell from its environment organic molecules:______.
a. such as carbohydrates and lipids self-replicating molecules,
b. such as RNA and DNA inorganic molecules,
c. such as nitrogen and oxygen
Answer:
b. such as RNA and DNA
Explanation:
DNA and RNA represent essential molecules present in all organisms. These nucleic acids (DNA and RNA) are composed of large chains of nucleotides that function to synthesize proteins required for cellular processes and to produce cell structures. Both RNA and DNA are highly stable biomolecules capable of storing and transmitting genetic information, which has been a requisite for the evolution of modern cells. Moreover, it is important to note that DNA is a double-stranded molecule and therefore it is more stable than single-stranded RNA.
Answer:
self replicating molecules, such as RNA and DNA
Explanation:
Incomplete expansion or collapse of part or all of a lung due to mucus, tumor, or a foreign body that blocks the bronchus is called:_________.
Answer:
Atelectasis
Explanation:
Atelectasis is a medical ailment which affects the respiratory system. It is formed as a result of incomplete expansion or collapse of part or all of a lung due to mucus, tumor, or a foreign body that blocks the bronchus.
It is however common with people who are asthmatic other have lung diseases and it is characterized by low fever, breathing difficulty .
why do you suppose that someone invented plastic
Answer: Plastics could protect the natural world from the destructive forces of human need.
Explanation: Plastic allows us to keep water in a bottle like if your going to arizona and you are dying of thrist, then you'll have water in a bottle or as we call "A water bottle". Plastic bags were invented to save the planet, according to the son of Swedish engineer Sten Gustaf Thulin who created them in 1959. The bags were developed as an alternative to paper bags, which were considered bad for the environment because they resulted in forests being chopped down.
how do I explain science in my own words
Answer:
you can say science is more important for my life
Consider that RR is red (dominant) and WW is white (dominant) plant phenotypes. The offspring of a cross between an RR plant and a WW plant would be pink and white. all pink. all white. red and pink.
Answer:
A, all Pink
Explanation:
Consider that RR is red (dominant) and WW is white (dominant) plant phenotypes. The offspring of a cross between an RR plant and a WW plant would be pink and white. Then the offspring would be pink.
What is dominant plant?Key species that shape how an ecosystem functions are called dominants. Typically, aboveground characteristics are used to evaluate plant dominance.
Individual species, on the other hand, might not scale proportionally belowground compared to aboveground. This is crucial in ecosystems like grassy and shrubby biomes, where the majority of biomass is distributed below ground.
Dominant species are important organisms that influence how an environment works. Typically, plant dominance is assessed using aboveground traits. Individual species may not scale proportionally belowground compared to aboveground, on the other hand.
Therefore, Consider that RR is red (dominant) and WW is white (dominant) plant phenotypes. The offspring of a cross between an RR plant and a WW plant would be pink and white. Then the offspring would be pink.
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What is physical science
Answer:
Physical science can be described as all of the following:
A branch of science (a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe).
A branch of natural science – natural science is a major branch of science that tries to explain and predict nature's phenomena, based on empirical evidence. In natural science, hypotheses must be verified scientifically to be regarded as scientific theory. Validity, accuracy, and social mechanisms ensuring quality control, such as peer review and repeatability of findings, are amongst the criteria and methods used for this purpose. Natural science can be broken into two main branches: life science (for example biology) and physical science. Each of these branches, and all of their sub-branches, are referred to as natural sciences.
Source: https://en.wikipedia.org/wiki/Outline_of_physical_science
Hope this helps ma dude!
3 concepts about carbohydrates?
Answer:
Monosaccharides, disaccharides, and polysaccharides. Polysaccharides, also called complex carbohydrates, are large non-polar molecules, and they are not hydrophilic.
When you decide whether or not the data supports the original hypothesis, you are.... asking questions asking questions forming a hypothesis forming a hypothesis making observations making observations drawing conclusions
Answer:
drawing conclusions
Explanation:
When a scientist decides if the data collected during an experiment supports the original hypothesis, such a scientist is trying to draw a conclusion from the experiment.
The drawing of conclusion represents one of the significant steps in the scientific method. After observations have been made and hypothesis formulated, the next step is to test the hypothesis through experimentation. Experimentation involves gathering data and at the end of the day, the data are analyzed to see if it conforms with the hypothesis or otherwise.
If the data conforms with the original hypothesis, the hypothesis is accepted as being true, and if otherwise, such a hypothesis is subjected to further testing instead of being accepted.
Calculate the percentage loss of mass between the sucrose solutions 0.1 mol/dm3and 0.5 mol/dm3. Give your answer to three significant figures
Answer:
The percentage loss in mass between sucrose solutions 0.5 mol/dm³ and 0.1 mol/dm³ is 80.0% loss in mass
Explanation:
The molecular formula of sucrose is C₁₂H₂₂O₁₁
The molecular mass of sucrose is 342.3 g/mol
Therefore;
The mass of sucrose in 0.1 mol/dm³ solution = 0.1 × 342.3 = 34.23 g
The mass of sucrose in 0.5 mol/dm³ solution = 0.5 × 342.3 = 171.5 g
The percentage loss in mass of the sucrose is given as follows;
[tex]Percentage \ loss \ in \ mass = \dfrac{Original \ mass - New \ mass}{Original \ mass } \times 100[/tex]
Therefore;
[tex]Percentage \ loss \ in \ mass = \dfrac{171.5 - 34.23}{171.5} \times 100 = 80.04 \%[/tex]
Which gives, the percentage loss in mass between sucrose solutions 0.1 mol/dm³ and 0.5 mol/dm³ is 80.0% to three significant figures.
Use the drop-down menus to answer questions about bacteria. Since bacteria are prokaryotes, they have no The outside of a bacterial cell is protected by a structure called a . The provides a rigid structure that gives the cell its shape. The helps to transport ions, nutrients, and waste. allow DNA to be transferred from one bacterium to another.
Answer:
See the answer below
Explanation:
Since bacteria are prokaryotes, they have no nucleus and membrane-bound organelles. The outside of a bacterial cell is protected by a structure called a capsule. The cell wall provides a rigid structure that gives the cell its shape. The cell membrane helps to transport ions, nutrients, and waste. The plasmids allow DNA to be transferred from one bacterium to another.
The bacteria are microscopic organisms that are generally classified as prokaryotes. The prokaryotes lack nucleus and other membrane-bound organelles, unlike the eukaryotes. The bacteria cells are enclosed in a protective structure known as the capsule. Immediately after the capsule is the cell wall whose components vary depending on whether the bacteria is Gram-positive or negative.
Towards the innermost part of the cell, after the cell wall is the cell membrane. It acts as a channel for the transport of materials in and out of the cell. Some bacteria cells have short, circular, extrachromosomal DNA known as plasmids which can be transferred from one cell to another.
Nucleus
Capsule
Cell wall
Cell membrane
Pili
Anyone answer it The flow of materials in different tropic levels of ecosystem is Unidirectional Bidirectional Multidirectional.
Answer:
unidirectional is ur answer mate
hope it helps u
Answer:
unidirectional
Explanation:
.................................
A student records the sexes and the breeds of dogs in an animal shelter. What kind of data is the student recording?
Answer:
Qualitative Data
Explanation:
Quantitative Data refers to data that can be recorded by numbers and Qualitative data is obersvational and non-numerical
Qualitative for Apex
1. Os ancestrais das cobras possuíam membros, que desapareceram ao longo da evolução do grupo. Marque a alternativa que explica, de acordo com o lamarckismo, a ausência de patas em serpentes: * 1 ponto a. Os ancestrais das cobras adotaram hábitos rastejantes, deixando de utilizar os membros, que atrofiaram e acabaram por desaparecer nesses animais. b. Existiam variações nas características ancestrais das cobras. Os animais que não possuíam membros, foram selecionados pelo ambiente pois favoreceu o hábito rastejante.
Answer:
ced sfhhhbbbbbbbbbbbbbbbbh
"A birth in which the baby is surgically removed from the uterus, rather than traveling through the birth canal, is called"
Answer:
Cesarean section
Explanation:
a surgical operation for delivering a child by cutting through the wall of the mother's abdomen.
animal need ______ in order to build down or breakdown materials. A. Energy B. DNA
Answer:
b
Explanation:
animals need energy to survive basically to breakdown materials too
Answer: A. Energy
Explanation:
animal need Energy in order to build or breakdown materials
DNA is the central core of the animal body, but it is not helping build or breakdown, it is just the genetic information of animals
Hope this helps!! :)
Please let me know if you have any question
An animal cell left and a plant cell right are shown which two cell parts are most likely found in both types of cell
A chemical reaction produces solid sulfur as a product. Which unit should be used to describe the mass of the sulfur produced? milliliters grams kilometers kelvin
1st part: B, Grams
2nd part: A, Liters
A chemical change produces solid sulfur as a product and solids are measured in units of grams.
What is a chemical change?
Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.
There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
There are three types of chemical changes:
1) inorganic changes
2)organic changes
3) biochemical changes
During chemical changes atoms are rearranged and changes are accompanied by an energy change as new substances are formed.
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a raccoon may live longer if it only eats vegetables what is the student doing
An individual with the genotype AaBb produces four different gametes in equal proportions. This is a demonstration of:_____.a. the chromosomal theory of inheritance.
b. Mendel's law of independent assortment.
c. Mendel's principle of segregation.
d. linkage.
Answer: b. Mendel's law of independent assortment.
What is a chromosome?
A. A strand of DNA
B. A virus that attacks cells
C. A protein used by cells
D. A type of allele
Answer:
A strand of genetic material ... is also A.P.EX approved
DNA stores the genetic code, chromosomes are thread-like structures, and sister chromatids are two halves of chromosomes and a strand of DNA. Thus, option A is correct.
What is chromosome?The genetic code is stored in every cell of your body in the form of deoxyribonucleic acid (DNA). It makes your body's instruction manual. The DNA molecule is packaged into thread-like structures called chromosomes in each cell's nucleus.
The term "homologous chromosome" refers to chromosomes that share the same genetic foundation but may also have variants caused by replication. The two halves of a given chromosome that are held together at the centromere are called sister chromatids.
After the cell has gone through the process of DNA replication in order to get ready for cell division, chromosomes are known as "replication chromosomes" emerge.
Therefore, DNA stores the genetic code, chromosomes are thread-like structures, and sister chromatids are two halves of chromosomes and a strand of DNA. Thus, option A is correct.
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