Which factor most accurately describes the statement ""survival of the fittest"" in relation to natural selection?.
Answer:
Predators
Explanation:
With natural selection, survival of the fittest can mean many things however one of the factors of which accurately describes the statement would be predators.
In order for high level expression of the E. coli lac operon to occur, a complex of catabolite activator protein and __________ must be bound to the DNA near the promoter.
In order for high level expression of the E. coli lac operon to occur a complex of catabolite activator protein and __CAMP__must be bound to the DNA.
What is E. coli lac operon ?The E. coli lac operon is consisted of genes which are involved in the metabolism of lactose in the presence of lactose and absence of glucose. the operon is turned off and on by regulators based on the different levels of glucose and lactose.
Hence we can conclude that In order for high level expression of the E. coli lac operon to occur a complex of catabolite activator protein and __CAMP__must be bound to the DNA.
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Genes, chromosomes, and DNA are important structures for processes related to heredity and reproduction. How are these structures related?
A
Many chromosomes make up a gene, and many genes make up DNA.
B
A chromosome is the same thing as a gene and both are made of DNA.
C
DNA is made up of chromosomes, and chromosomes are made of genes.
D
Genes are sections of DNA that make up a chromosome.
Answer:
C
DNA is made up of chromosomes, and chromosomes are made of genes.
Distinguish how an animal welfare activist would most likely feel about the animals’ housing and training in the following scenario.
A traveling circus uses a number of animals in its act, including a tiger and a small herd of elephants. When traveling, the tiger gets its own car and attendants who feed it regularly. The elephants are dispersed among three cars and each has a number of attendants who feed and clean up the elephants’ waste. To train the animals, the circus hires animal trainers who use whips to teach the animals how to behave in the ring.
Answer:
using whips on animals is not a desirable activity, as well as circus' being notorious for the mistreatment of animals, I think anybody who had these animals welfare in mind would disapprove of this scenario
Explanation: my Best guess with the contect given
The heart has 4 valves. Explain how one of them works
Explanation:
The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers)
please answer my question correctly
#1
Monsoon is a derived word of Arabic language
It simply breaks down into "wasama" and "mawsim"
Wasama means to mark and mawsim is rainy season#2
Monsoon mostly brings happiness as crops start to grow up .Many farmers from different regions depends upon monsoon for croppingPros
Monsoon helps in croppingIt increases melancholyness among the animals and humansCons:-
If Monsoon stays long at one place it brings heavy flood to withdraw some lives
4.2
A plant was placed in water containing black dye. After 24 hours the
plant was removed and sections were taken from the root and the
stem.
Which diagram shows the results?
(2)
A
**
root
stem
root
stem
C
D
root
stem
root
stem
Answer:
d
Explanation:
because maths innit fam
A plant was placed in water containing black dye. After 24 hours the
plant was removed and sections were taken from the root and the
stem. In the root, cambium part will get stained and in the stem, cortex will be stained from dye so the correct option is D.
What is cambium and cortex in plant root and stem?Cambium is a layer of continuous dividing cells between xylem and phloem tissues which is responsible for the secondary growth of stems and roots. A cortex is an outer layer of a root or stem in a plant, located below the epidermis but outside of the vascular bundles.
The conduction (uptake) of water in a plant stem takes place through the xylem.
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What are 2 reasons a species might evolve to become a new species?
please answer my question correctly
#1
Sea breeze part
When the land gets warmer in day time the warm air goes up To fill the free space created underneath the middle atmosphere cold air breezes from ocean surface towards land to fill up the free space .This is the reason why humidity remains at peak during day time on beach sides#2
Land breeze part
In night time the opposite of day time appears ,the ocean surface gets warmer.The warm air rises upTo fill up the free space cool air from land surface goes there .Humidity remains less so we feel chill during night timeAnswer:
#1
Sea breeze part
When the land gets warmer in day time the warm air goes up
To fill the free space created underneath the middle atmosphere cold air breezes from ocean surface towards land to fill up the free space .
This is the reason why humidity remains at peak during day time on beach sides
#2
Land breeze part
In night time the opposite of day time appears ,the ocean surface gets warmer.
The warm air rises up
To fill up the free space cool air from land surface goes there .
Humidity remains less so we feel chill during night time
What type of forensic evidence was recovered during the bomb set off at the New Mexico facility on the video that was similar to the evidence obtained at the Boston bombings and how did this evidence allow researchers to connect other pieces of evidence to the same bomb
Answer:
they were pressure cooker bombs
Microtubules are groups of proteins that provide structure to cells and are important during cell division. Which of the following pathways produces microtubule proteins in cells?
A. DNA → polypeptide → mRNA → protein
B. DNA mRNA → polypeptide → protein
C. mRNA → DNA → polypeptide → protein
D. mRNA → polypeptide → DNA → protein
Explain/identify each phase of the cell cycle. (interphase + mitosis + cytokinesis).
Answer:
Interphase is when cell grows, replacing it chromosomes while preparing for cell division.
Mitosis - copies its chromosomes and then segregates them, generating two identical nuclei.
Cytokinesis - the cytoplasm splits in half to make two new cells.
The arctic fox is different from the brown fox. the color of the arctic fox’s fur changes to brown during the summer. the fur remains white during winter. the arctic fox lives in snow-bound regions, while the brown fox lives in forests. which three ways do these adaptations enable both foxes to survive in their surroundings? photograph on the left shows an arctic fox on a snow-covered landscape and photograph on the right shows a brown fox in a forest. the brown color camouflages the arctic fox when snow melts during the summer. the white color camouflages the arctic fox during the winter. the brown color camouflages the brown fox in the forest. the white color camouflages the arctic fox when snow melts during the summer. the brown color camouflages the brown fox in snow-bound regions.
The arctic fox is different from the brown fox. why brown color camouflages brown fox in forest and white color camouflages arctic fox in snowy regions.
What is camouflage?Camouflage is the set of techniques and methods that allow a given organism or object to remain indistinguishable from the environment that surrounds it. Examples range from the woody colors of the stick bug to the green-brown spots on the uniforms of modern soldiers.
With this information, we can conclude that the arctic fox is different from the brown fox. why brown color camouflages brown fox in forest and white color camouflages arctic fox in snowy regions.
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What explains how the parents in a family both have the same eye color, but some of their children have a different eye color? Assume for this example that eye color is determined by a single gene.
A. One parent is homozygous dominant, and the other heterozygous for a gene that controls eye color allowing some of the children to express a different trait.
B. The parents are both homozygous dominant for a gene that controls eye color allowing some of the children to get two recessive alleles.
C.One parent is homozygous dominant, and the other homozygous recessive for a gene that controls eye color allowing some of the children to express a different trait.
D. The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles.
The correct option is D. The parents are both heter0zyg0us for a gene that controls eye color allowing some of the children to get two recessive alleles.
What is complete dominance?When the dominant allele completely masks the recessive allele, we talk about complete dominance.
This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.
In the exposed example, let us assume that the alleles that code for eye color are the followings,
E is the dominant allele and codes for the dominant colore is the recessive allele and codes for the recessive colorIf at least one parent is h0m0zyg0us dominant for the trait, EE, the whole progeny will express the dominant trait because all of them will carry at least one dominant allele.
If both parents are heter0zyg0us Ee, some children will express the dominant trait and some other the recessive trait. This is because some of the children receive at least one dominant allele and some others only receive recessive alleles.
Cross:
Parentals) Ee x Ee
Gametes) E e E e
Punnett square) E e
E EE Ee
e Ee ee
F1) Genotype
1/4 = 25% of the progeny is expected to be h0m0zyg0us dominant EE
1/2 = 50% of the progeny is expected to be heter0zyg0us Ee
1/4 = 25% of the progeny is expected to be h0m0zyg0us recessive ee
Phenotype
3/4 = 25% of the progeny is expected to have the dominant eye color
1/4 = 25% of the progeny is expected to have the recessive eye color
The correct option is D. The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles.
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1 Minute, 15
1
Ø
III
The circle and squares that are shaded in
mean that those individuals
?
are females
are carriers for the trait or disorder
are not affected with the trait or disorder
are affected with the trait or disorder
I am offering 45 points, because I really need a good, complete answer. As a result of your Zombie Apocalypse, the grass at a local park will no longer be mowed. What type of succession is this (primary or secondary)? Describe the stages of succession that will occur in the next 100 years.
Answer: the next 100 years won't matter as long as you have a good soil because it contains a good amount of nutrients for farming other than that I don't know what to say I can't really understand your question
Explanation:
based on the data, what can you infer about the relative pH of the stomach?
The pH of stomach is important as it helps to induce the digestive enzyme called pepsin. The presence of HCL i.e., hydrochloric acids in stomach results in the pH of stomach to become acidic which range from 1.5 to 6.5 values.
What is the pH level of stomach?When the bolus enters the stomach, it aids the release of gastric juice having enzymes, mucous and HCL.
The upper and lower parts of stomach have varying pH values. Upper part has a pH of 4−6.5, while the lower part is with a pH of 1.5−4.0 which is highly acidic due to HCL.
Thus, the relative pH of stomach is acidic ranging from value 1.5 to 6.5.
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The chickenpox virus can remain latent in host cells by integrating its DNA into the host cell genome. This virus uses the ______ cycle as its main life cycle pathway.
The chickenpox virus can remain latent in host cells by integrating its DNA into the host cell genome. This virus uses the genoma replication cycle as its main life cycle pathway.
How does the virus replication process take place?Viral replication refers to the process by which a virus reproduces within a living organism. This usually involves turning infected cells into virus factories, which make copies of the virus's genetic code and expel them to spread into the host's body.
Upon replication, viruses produce new copies of themselves within infected cells.
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Approximately what percentage of human energy requirements is currently produced with fossil fuels?
Answer:
80%
Explanation:
a study in 2019 shows that 80% of our human energy is produced with fossil fuels
what kind of mutation does this image represent
Answer:
A. Deletion
Explanation:
The kind of mutation that this image represent is deletion. The correct option is A.
What is mutation?A variation in the usual DNA sequence at a specific gene locus. Although the term has a negative connotation, mutations (including polymorphisms) can have a negative, positive, or neutral effect on cell function.
Mutations can occur as a result of errors in DNA replication during cell division, mutagen exposure, or viral infection.
Germline mutations (those found in eggs and sperm) can be passed on to offspring, whereas somatic mutations cannot.
In genomics, a deletion is a type of mutation that involves the removal of one or more nucleotides from a segment of DNA. A deletion can result in the loss of any number of nucleotides, ranging from a single nucleotide to an entire chromosome.
Thus, the correct option is A.
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Your question seems incomplete, the missing part is attached below as image:
Consider the following experiment. A healthy plant is placed in a sealed container overnight, when the plant is in darkness. The concentration of oxygen in the trapped air is measured at the start of the night and again in the morning.
Predict whether you expect there to be more or less oxygen in the container in the morning, or the same? Explain why.
I expect to see less oxygen in the container in the morning because plants consume oxygen at night.
What is cellular respiration?Cellular respiration is the process by which organisms consume oxygen and generate carbon dioxide.
During the night, a plant can consume oxygen and release carbon dioxide in this process (respiration).
In conclusion, I expect to see less oxygen in the container in the morning because plants consume oxygen at night.
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In 2001, the Human Genome Project reported that humans have about 30,000 genes. By 2018, researchers had revised that number to
In 2001, the Human Genome Project reported that humans have about 30,000 genes. By 2018, researchers had revised that number to 20,700. This is further explained below.
What is Genome?Generally, Genome can be defined as a gamete or microorganism's haploid pair of chromosomes or each cell of a multicellular organism
In conclusion, researchers had revised that number to around 20,000 to 25,000 in later years
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Which observations describe both images? Select all the correct answers. The oil mixes with water. The oil floats on the surface of the water. The oil sinks to the bottom of the water. The oil spreads to cover the water. The oil stays in one spot.
The correct answers are, the oil floats on the surface of the water and it spreads to cover the water surface.
Properties of oil
Oil is a liquid substance that can be described with the following properties;
Oil is less dense than water, which means it will float in waterOil has high viscosity, and with the help of surface tension of water it will spread in water.Thus, the correct answers are, the oil floats on the surface of the water and it spreads to cover the water surface.
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PLEASE HELP FAST I AM ON A TIMER THANK YOU!!
When we analyzed haplotypes detected in mtDNA from the various sites where juncos lived, we found patterns in the data. We noticed that the more time that passed, the more mutations occurred. Mutations in DNA lead to differences in the juncos. Examine the data from the site below and circle the best claim.
(PLEASE LOOK AT PICTURE TO SEE THE DATA)
A.) Junco A and Junco G are very closely related—their DNA does not show many mutations.
B.) Junco A and Junco F are very closely related—their DNA does not show many mutations.
C.) Junco A and Junco N are not very closely related—their DNA shows many mutations.
D.) Junco A and Junco M are not very closely related—their DNA shows many mutations.
Answer:
The answer is c. Here is why. Look at my explination below
Explanation:
When you look at the table you can see which one is most looked at, and use the answer to find the data table, use that and you shall get your answer, my friend!
A client has had a kidney transplant performed for end-stage kidney disease. What type of immune response that T-cell lymphocytes perform is related to this type of surgery
The type of immune response that T-cell lymphocytes have related to this type of surgery is cell-mediated response.
What is the cell-mediated response?The cell-mediated response is a type of cellular response where cells of the immune system work to maintain a healthy state.
This type of response (cell-mediated response) is associated with the activation of inmmune T cells.
In conclusion, the type of immune response that T-cell lymphocytes have related to this type of surgery is cell-mediated response.
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The diagram represents several stages of the cell cycle.
G,
s
G
M
During the cell cycle, normal cells exit the G1 phase and enter the Go phase where they rest. Typically,
cells will reenter the cycle at G1 prior to going on to S phase. However, abnormal cells such as cancer
cells, may not be allowed to enter the Go phase to rest.
As a result, these cells will most likely -
F. mutate during G2 phase
G. continuously repeat the cycle
H. die after DNA replication
J. fail to complete mitosis
Abnormal cells such as cancer cells, may not be allowed to enter the G0 phase to rest. These cells will most likely continuously repeat the cell cycle.
What do you mean by Cell cycle?The Cell cycle may be defined as the entire sequence of events happening from the end of one nuclear division to the beginning of the next nuclear division.
The abnormal cell undergoes a repeated cell cycle because they express an enzyme called telomerase that switches the wearing down of chromosome ends.
This happens normally in the cell cycle, and after multiple repeated cycles, such abnormal cell undergoes apoptosis.
Therefore, abnormal cells such as cancer cells, may not be allowed to enter the G0 phase to rest. These cells will most likely continuously repeat the cell cycle.
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when does the embryo form?
A. At the end of the third trimester
B. A few days after fertilization
C. In the second trimester
D. At the end of the first trimester
Explain how cancer cells grow.
Answer:
Gene mutations in cancer cells interfere with the normal activity within a cell.This can cause it to grow out of control and/or not die when it should. Cancerous cells can continue to grow because they behave differently than normal cells do. Cancer cells differ from regular cells in many ways,one of their more apparent traits is that they divide quickly with no control over them.The amino acid glutamine is one of the many key factors to helping the growth of cancer cells. Like all cells, cancer cells need nutrients to grow,sugar is one important fuel for it's development, but is far from the only factor.
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Biology question! Please help!
In this question we will transcribe DNA to RNA
What is DNA and RNA?It consists of a pentose, a phosphate and has
adenineguaninecytosine and uracil as nitrogenous bases.RNA, unlike DNA, is composed of only one strand and it is produced in the cell nucleus from one of the strands of a DNA molecule. Once ready, the RNA goes to the cell cytoplasm, where it will perform its main function, which is to control protein synthesis.
Table 1
CAC-GUG-GAC-UGA-GGA-CUU-CUC
Table 2CAC-GUG-GAC-UGA-GGA-CAU-CUC
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Explain why the pyramid of ocean life directly affects human health.
Answer: humans eat some the ocean life, and other fish don't have any food because of it.
Explanation: