Answer:
rate of division
Explanation:
In normal cells, the cell cycle is controlled by a complex series of signaling pathways by which a cell grows, replicates its DNA and divides. In cancer, as a result of genetic mutations, this regulatory process malfunctions, resulting in uncontrolled cell proliferation.
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Cancer is a disease in which some cells lose their ability to control rate of division. The correct option is C.
What is cancer?Cancer is the body's unchecked proliferation of aberrant cells. When the body's natural control system malfunctions, cancer might emerge.
Instead of dying, old cells proliferate uncontrollably to produce new, aberrant cells. These excess cells could aggregate into a tissue mass known as a tumour.
Genes, the fundamental building blocks of inheritance, can change in ways that result in cancer.
Chromosomes are long, tightly packed DNA strands where genes are organised. Since genes that determine how our cells behave, particularly how they grow and divide, are altered, cancer is a genetic disease.
Thus, the correct option is C.
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You discover a new alien race that you decide to call the PAMMARIANS. They are different from us in that they have three sexes, called Q, R, and S. All three sexes must fuse their gametes to form a new PAMMARIAN (and you thought dating on the Earth was hardi). They have nuclear DNA and extrachromosomal organelles, similar to mitochondria, called MITOCHLORIANS, which have their own DNA. The R gender is like human females (they donate the cytoplasm during the mating). Q and S do NOT donate cytoplasm during mating, like human males. Which of the following is TRUE?
A. In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring WILL HAVE a mitochlorian mutant phenotype.
B. In a mating, if the S and a genders have a mitochlorian DNA mutation, the offspring will be mutant as well.
C. In a mating, if only the R gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype.
D. In a mating, if only the gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring WILL HAVE a mitochlorian mutant phenotype.
E. In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype.
Answer:
Option E
Explanation:
In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype.
It was discovered that an offspring always inherits the mothers mitochondrion DNA including all its defects and not from the father as the mother contributes the bulk of the cytoplasm. Thus, since the gender female is R, if she possess a mutant mitochorlian DNA, the offspring will exhibit that mutant phenotype as care to Q and S that cant pass their mutation on.
Which step of the scientific method do you perform after you collect data and
observations?
Answer: Draw a conclusion about your hypothesis
Explanation:
If the results match up, then the data supports the hypothesis and thus, the hypothesis itself SUPPORTS the idea that you're studying. Afterward, discuss the experiment with your peers.
Never say that a hypothesis has been proven, because you are not proving anything, it is support.
reaaallly need help!!
Explanation:
this is very easy I will try and send this picture
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Remember monomers and polymers? DNA is what type of polymer?
A.) Protein
B.) Nucleic Acid
C.) Lipid
D.) Carbohydrate
Answer:
polynucleotide "carbon" sugar so I would say B or D
Explanation:
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain you have filled every blank with a term before clicking Submit.
Nairobi ______ is the capital of Norway.
Buenos The capital of Canada is______
Aires ______is the capital of Indonesia.
Canberra ______is the capital of Australia.
Ottawa The capital of Kenya is________
Jakarta The capital of Argentina is______
Answer:
Oslo is the capital of Norway.
The capital of Canada is Ottawa.
Jakarta is the capital of Indonesia.
Canberra is the capital of Australia.
The capital of Kenya is Nairobi.
The capital of Argentina is Buenos Aires.
Explanation:
Oslo is the capital of Norway.
Being the biggest city of Norway, Oslo was made the capital of the country. It is also the most populous city in the country and is the main governmental and economical center of the nation.
The capital of Canada is Ottawa.
Chosen because of its location, the city of Ottawa was chosen by Queen Victoria to be the capital of Canada. It is the central point of access between the cities of Montreal and Toronto, and despite it's smaller status as a city, it was chosen as the capital due to its prominence in the location.
Jakarta is the capital of Indonesia.
Jakarta, located on the island of Java, is the capital of Indonesia. Formerly known as Batavia, this city was the official Dutch settlement during the colonial times. Now, it is presently the capital of the nation.
Canberra is the capital of Australia.
Despite Australia having numerous capital cities according to the boundary or seat of government it has, the city of Canberra is more regarded as the capital of the island nation. It is the largest inland city of the country and has numerous important government offices in it.
The capital of Kenya is Nairobi.
The biggest city in the Kenyan nation, the city of Nairobi is the capital of Kenya. The Nairobi River flows through the city, from which the Maasai name of the city Enkare Nairobi is attributed.
The capital of Argentina is Buenos Aires.
Buenos Aires is the capital of Argentina. It is also the largest city in the Latin nation and is home to numerous multi-nationals from various ethnic groups.
Which fossil fuel should be available for the longest time if current usage continues?
What pressure is always negative and helps to keep the lungs inflated?
Answer:Intrapleural pressure
Explanation:
Answer:
intrapleural
Explanation:
Why are detritivores, decomposers and omnivores not assigned trophic levels
Answer:
The reason is because detritivores and decomposers and omnivores are multilevel food chain consumers in an ecosystem making them not qualified to be assigned to a given trophic level
Explanation:
An organism is placed in a trophic level based the level it is from where the food chain starts with the start of the food chain having a level of 1 for the food producers such including plants and algae
Level 2 organisms are called primary consumers and consists of organism that eat only plants known as herbivores such as cattle
Level 3 organisms are called secondary consumers and consists of animal eating organism known as carnivores such as foxes etc.
Level 4 organisms are called tertiary consumers
Level 5 organisms are the a p e x p r e d a t o r s
Detritivores and decomposers such as bacteria, earthworm flies fungi consume the wastes produced at all trophic levels, therefore they cannot be assigned to a particular trophic level
Similarly, omnivores consumes both plants at level 2 and animals at level 3 making it ambiguous to assign them to one particular trophic level.
Which type of mutation is likely to have the least affect on an organism
Answer:
Point Mutations
A point mutation—the change of a single nitrogen base in a DNA sequence—is usually the least harmful type of DNA mutation
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Someone pls help me to understand what the lock and key theory is for how enzymes work. (use diagrams if it helps)
Answer:
according to this theory both enzymes and substrate possess specific shapes that fit exactly into one another.This model explains specificity.
general example when we open the door of our house we use a specific key to open the door not all keys will open the door of our house.In this example the key is substrate and the door or lock is the enzyme that fits into specific substrate.
Multiple alleles____ can interact how with traits
01:50:51
A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how
the cell could be classified?
The cell is prokaryotic her
has DNA
The cell is a plant cell as animal cells do not have chloroplasts
Answer:
The answer is D.) The cell is eukaryotic because it has chloroplasts.
Female honey bees are diploid and male honey bees are haploid. The haploid males produce sperm and can successfully mate with diploid females. Fertilized eggs develop into females and unfertilized eggs develop into males. How does the process of sperm production in male honey bees differ from sperm production in other animals?
a. Male honey bees use meiosis I only, whereas other animals use both phases of meiosis.
b. Male honey bees use meiosis, whereas other animals use mitosis.
c. Male honey bees use mitosis, whereas other animals use meiosis.
d. Male honey bees can use mitosis or meiosis, whereas other animals can only use meiosis.
Answer:
The correct answer is option C.
Explanation:
In most of the male animals the production of sperms takes place through the process of meiosis. Meiosis occurs only in 2n or diploid cells. Thus the most of the animals produce sperm due to their diploid nature.
In male bees the sperm production is different than other animals as it is haploid cell and haploid cells produce sperms through mitosis. In haploid cells mitosis helps in produce more sperms.
Thus, the correct answer is option C.
what is the role mRNA in expressing specialized strutures?
Answer:
An mRNA is translated into a protein sequence. ... Each mRNA contains, at least, one coding region that is related to a protein sequence of the genetic code. Each nucleotide triplet called codon of the coding region represents one amino acid. Only one strand of a DNA duplex is transcribed into a messenger RNA molecule
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Explanation:
. Which of the following is a function performed by the kidneys?
TP53 is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without the recessive gene?
Answer:
Explanation:
Since it is a recessive gene, tumor suppressor genes required the inactivation of both alleles, this is usually accomplished by the mutation of one allele and a targeted homozygous deletion of the second allele. This leads to an effective inactivation of the suppressor genes with the mutations acting a a dominant negatives. This way, patients are put at a higher risk of developing cancer
Select the correct answer.
Which type of energy is thermal energy a form of?
A.
chemical energy
B.
kinetic energy
C.
magnetic energy
D.
potential energy
Answer:
right answer is
B
Kinetic energy
What is function of
Bile
Answer:
bile from liver helps in the digestion of lipids through emulsification i.e. by keeping the lipids droplets separate from one another.
bile has no enzymes but contains but contains bile salts for the emulsification of lipids. It helps the lipid-digesting enzymes to attack on lipids
If the current trend continues, can the temperature be expected to increase/decrease or stay the same in the next twenty years? Anssssswer please only 8 minutes left !!!
Answer:
Increase
Explanation:
Some parts of the worlds rainforests haven’t been studied closely, and may contain species of plants which have benefits for humans. ‘Suggest and explain uses of stem cells taken from the meristem of a new species of plant.’
To determine the similarity of stem cells of one species of plant with that of another: By determining the similarity between the stem cells taken from two different species, it can be identified whether there is a possibility of clowning, of giving birth to new and improved species of plants that are beneficial for mankind, or that of interchanging the stem cells to boost up or slow down the growth of the plants. To determine whether the stem cells can be altered and reintroduced to make the plants grow in a specified manner: By altering and modifying the stem cells and reintroducing them back again, it is possible to restrict the growth of the plant to a specific size or shape. This trait of the stem cells can be used to make the plantation possible in compact areas as well as to grow the plants in the desired shapes.
To determine whether the speed of division of cells at the roots and appendages of the plant can be modified: By restricting or boosting the speed of the division of meristem cells using modified stem cells, the plant can be made to grow faster in a specific season and slower in another. This feature can be used to lower the vulnerability of the plant species towards various natural weathering actions.
Stem cells extracted from the meristem can be precisely examined for their effectiveness against illnesses that harm portions of the plants such as the roots, shoots, and appendages to ascertain the resistance against various plant diseases.
What is meristem?They can thus also be utilized to rebuild the damaged plant tissues if the newly discovered species becomes extinct.
It can be determined whether there is a chance of clowning, or of giving birth to new and improved species of plants that are beneficial to mankind.
Therefore, Stem cells extracted from the meristem can be precisely examined for their effectiveness against illnesses that harm portions of the plants such as the roots, shoots, and appendages to ascertain the resistance against various plant diseases.
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In the human nervous system, the brain is an example of what level of organization? a. cell b. tissue c. organ system d. organ
Answer:
d. organ
HOPE it helps!!!Answer:
The answer is the organ
Explanation:
How has human activity changed the planet?
Answer:
a lot of things
Explanation:
you see, we have polluted the planet, and if we keep on doing it, then the planet will die
Explanation:
human impact on the environment or anthropogenic impact on the environment includes changes to biophysical environmsnts and ecosystems, biodiversity, and natural resources caused directly or indirectly by humans including global warming, environmental degradation (such as ocean acidification) etc
how does the nonpolar nature of lipids contribute to their insulating quality
You have isolated a new mutation in the T4 bacteriophage rII A gene and you map its location within the gene by recombination frequency. You find that this new mutation fails to give wild type recombinants with several different adjacent mutations located in the same gene. What type of mutation is this new one you just isolated
Answer:
A lethal mutation, thereby the resulting phenotype is not observed .
Explanation:
Lethal mutations are the result of genomic changes that may be lethal in certain conditions. In genetic research, this type of mutation has shown to be very useful in analyzing gene function (i.e., genes whose protein products are key for the survival of the organism in question), and they are perfect gene markers. In bacteriophages, for example, temperature-sensitive mutants of phage T4 that can not grow at temperatures higher 42°C have been identified (Edgar & Lielausis 1964).
Citation:
R. S. Edgar, & I. Lielausis (1964). Temperature-sensitive mutants of bacteriophage T4D: their isolation and genetic characterization. Genetics, 49(4), 649.
You are a farmer starting an orchard and interested in breeding citrus trees. In grapefruits, big fruit (B) is dominant over small fruit (b), and silky skin (S) is dominant over rough skin (s). You cross a homozygous tree that has big fruit and silky skin, with a homozygous tree that has small fruit and rough skin. You self-cross the F1 to produce the F2.
Required:
a. What will be the phenotypic ratios in the F2?
b. If you backcross an F1 tree with the big, silky skin parent, what phenotypes and proportions would you expect in the offspring?
c. If you backcross an F1 tree with the small, rough skin parent, what phenotypes and proportions would you expect in the offspring?
Which of the following removes waste from the body through perspiration? blood kidneys skin large intestine
Answer:
Kidneys, skin and large intestine. Organs of excretion include the skin, liver, large intestine, lungs, and kidneys. All of them excrete wastes, and together they make up the excretory system. The skin plays a role in excretion through the production of sweat by sweat glands.
Explanation:
Answer: SKIN
Explanation: Perspiration is the process of sweating so your skin does that
Building large manufacturing facilities can affect
ecosystems by increasing the
Answer:demand for resources such as fossil fuels
Explanation:
Building large manufacturing facilities can affect ecosystems by increasing the demand for resources such as fossil fuels.
Thus, The breakdown of buried, carbon-based organisms that perished millions of years ago produces fossil fuels. They produce deposits rich in carbon, which are taken out and burned to provide energy.
They presently provide about 80% of the world's energy and are non-renewable. A vast array of items, including plastic and steel, are also produced using them. Coal, oil, and gas are the three forms of fossil fuels.
Global warming is mostly caused by emissions from fossil fuels, according to the Intergovernmental Panel on Climate Change (IPCC). 89% of the world's CO2 emissions in 2018 came from industry and fossil fuels.
Thus, Building large manufacturing facilities can affect ecosystems by increasing the demand for resources such as fossil fuels.
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In the lab on Trophic Interactions you were looking at behavior of mosquito larvae. The question being asked was: Does prey behavior change in the presence of a predator? What would be an appropriate null hypothesis for this experiment? Recall in Treatments 2 and 3, a predator was added to the mosquito tanks.
Answer:
Null hypothesis: the behavior of mosquito larvae doesn't change in the presence/absence of predators added to the tanks in Treatments 2 and 3.
Explanation:
In statistics, the null hypothesis states that there are no differences between the two variables tested in the experiment, while the alternative hypothesis uses the experimental data in order to reject the null hypothesis. In this case, the alternative hypothesis will use the data from treatments 2 and 3 to confirm that predators can modify the behavior of mosquito larvae.
What is one reason why we study properties of minerals?
SCIENCE
Answer:
To identify minerals.
Explanation:
That way, we can know which minerals react to which tests.
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How can you determine the optimum pH of an enzyme?
You can determine the optimum pH of an enzyme by graphing its pH activity and studying the results.
Enzymes each perform differently in distinct environments. Some require lower pH to function, while others achieve maximum performance at higher pH levels.
This relationship between the productivity of the enzyme and the pH can be studied and graphed. Once done, we can expect this graph to look like a parabola, increasing steadily until maxed, then gradually decreasing back to zero at the other extreme. The vertice of this parabola will give us the optimum pH for the enzyme.
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