Answer:
Ninguna de las dos. No ocurre ni mitosis ni meiosis.
Probablemente haya ocurrido fisión binaria/bipartición.
Explanation:
En este caso estamos hablando de bacterias, organismos unicelulares procariotas. Estos tienen una forma de reproducción asexual denominado fisión binaria. Los eucariotas por su parte pasan por periodos de división celular implicada en el crecimiento denominado mitosis, y división celular implicada en reproducción sexual, denominada meiosis.
La fisión binaria, también conocida como bipartición, si bien muy parecida a la mitosis en algunos aspectos, es la forma de reproducción de las bacterias.
Ambas, mitosis y fisión binaria, implican un duplicado de material genético. El ADN se duplica y una copia va a cada célula hija. Lo mismo sucede con el resto del contenido celular. Finalmente ocurre citocinesis. Sin embargo, a diferencia de la bipartición, la mitosis requiere de mecanismos mucho mas complejos de duplicación celular e involucra también a la cariocinesis, ausente en bacterias.
La fisión binaria ocurre muy rápidamente, en un breve período de tiempo puede hallarse una diferencia considerable en la cantidad de células presentes en un sustrato, producto de esta división. Es por esto que el crecimiento que exhiben las bacterias como población, sigue un modelo exponencial.
(HELP ASAP)
Cystic fibrosis is one of the most common genetic diseases in America. It is estimated
that 1 in 23 Americans are carriers for Cystic Fibrosis. Cystic Fibrosis is a recessive trait
that follows Mendel's Law of Dominance.
Answer ALL parts of the free response below - be sure to use vocabulary and explain your
response in detail:
A. Explain what Mendel's Law of Dominance means
B. Explain how 2 parents who do NOT have Cystic Fibrosis could have a child with cystic
fibrosis.
Answer:
a.When an organism is heterogeneous for a trait, it expresses only the dominant allele
b. A child will be born with CF only if they inherit one CF gene from each parent. A person who has only one CF gene is called a CF carrier. They are healthy and don't have the disease. But they are a carrier of the disease.
Explanation:
a.In other words, the dominant trait always masks the recessive trait.
b.A parent can be a CF carrier, and pass the CF gene on to their child.
4. Compared with the walls of arteries, the walls of veins
a. are thicker.
c. lack valves.
b. are thinner.
d. have more resistance.
What front is being forecast for this state?
In the early 1900s, three species of goatsbeard wildflowers, T. dubius, T pratensis, and T. porrifolius, were introduced to the United States. Each of the species had a chromosome number of 2N. In the 1930’s, a few populations of offspring from the original wildflowers were identified as having a chromosome number 4N. What does this data suggest about speciation.
A. Speciation has occurred because the original species of wildflowers produced populations of viable offspring.
B. Speciation has occurred because breeding between the offspring and original populations would not be possible.
C. Speciation has not occurred because the offspring of the original wildflowers were not introduced into a new area.
D. Speciation has not occurred because the offspring inherited identical genetic information to the original wildflowers.
Answer:
B. Speciation has occurred because breeding between the offspring and original populations would not be possible.
Explanation:
Speciation has occurred in the species due to no breeding between the offspring and original populations because the offspring and original species has different number of chromosomes in their DNA. Due to this difference in the chromosome number in the DNA, there is no chance of breeding between offspring and original species. Speciation is the evolutionary process by which populations of organism evolve with the passage of time and become different from the original species.
I think ik the answer but i'm not sure it that's the answer.
Answer: A or D
Explanation:
A hurricane hits a coastal prairie and destroys the habitat. Years later, there is an appearance of small plants with rapidly spreading roots. This is an example of- *
Answer:
Secondary succession
Explanation:
Answer:
microhabitat
Explanation:
Years later there is an appearance of small plants with rapidly spreading roots on newly formed coastal sand dunes. This vegetation describes— A a microhabitat
help. no links or spam.
Answer:
D: Genetic material composed of DNA
Hope this helps! :)
Cancer is caused by __________ in genes that regulate the cell cycle. These mistakes in DNA, cause the checkpoint __________ to not function properly. As a result the cells will spend more time dividing, which is called _____________ rather than in interphase.
Explanation:
cancer cause due to uncontrolled divisions of the cell because of gene mutations or presence of oncogenes which destroy or destabilise the checkpoints that prevent or controll cell division
What else should a grower do to make sure that the plants are photosynthesising at the optimum rate ?
Answer:
7 thats answer
Explanation:
define the word corrosion
Answer:
Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment
Explanation:
i hope you like give brainliest if you do
Answer:
the process of corroding metal, stone, or other materials
corroding: destroy or damage (metal, stone, or other materials) slowly by chemical action.
The process of destroying metal, stone, or other materials.
Explanation:
please help me on this and no link's please
Answer:
A would be the best answer.
Explanation:
A seems to be the answer that matches data shown on the graph.
This is the ultimate source of our energy
Answer:
yes thats right, its the sun
12
1 point
Which type of cell must contain a mutation in order for the mutation to be passed on to offspring (select 2)?
sperm cell
egg cell
skin cell
nerve cell
brain cell
blood cell
A student created a table to compare animal adaptations. Based on the table, which
animal has a behavioral adaptation, and how does it give the animal an advantage?
Animal Adaptation
Duck Webbed feet
Squirrel Collects and stores food
The duck, because the behavioral adaptation allows it to catch prey.
The duck, because the behavioral adaptation helps it survive the environment.
The squirrel, because the behavioral adaptation provides food during winter.
The squirrel, because the behavioral adaptation to have more offspring.
Answer:
B
Explanation:
Ducks have the webbed feet so, they could swim in the water so they don't drown. That is animal adaptation to the environment.
Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
What is behavioral adaptation?The behavioral adaptation of collecting and storing food is an important survival strategy for many animals, including squirrels. During times of abundance, such as the fall months, squirrels will collect and store food, such as nuts and seeds, in order to have a food source during times of scarcity, such as the winter months. This allows the squirrel to survive and avoid starvation during times when food is less readily available.
Hence, Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
Learn more about the behavioral adaptation here.
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What is rule of dominance?
Answer:
Mendel's law of dominance states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic. Rather than both alleles contributing to a phenotype, the dominant allele will be expressed exclusively.
Explanation:
Hope this helps:)
What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? O As air pressure in an area decreases, the density of the gas particles in that area decreases. O As air pressure in an area decreases, the density of the gas particles in that area increases. O As air pressure in an area decreases, the density of the gas particles in that area remains constant. O As air pressure in an area decreases, the density of the gas particles in that area increases and decreases in an alternating pattern.
Answer:
As air pressure decreases so does density of gas particles
Explanation:
Question 4
Nearly 30 percent of the native flora in the United States is considered to be of conservation concern. Without human intervention, many of these plants
may be gone within our lifetime. For the native birds and mammals of the United States to survive, plant life must be conserved. What product of
photosynthesis do plants provide to all animals?
Your answer:
Oxygen
Carbon Dioxide
Light
Hydrogen
Clear answer
Question 5
Answer:
Oxygen
Explanation:
can someone help me with this immediately!!!! pls don’t guess or leave links!! correct answer gets brainiest
Answer:
Bones produce blood cells. So, if there are no bones in our body, then our body cannot make blood. So the answer is B.
For many years, scientists thought that the universe was static—that it had always existed and been the same, and it was neither expanding nor contracting. Then, in the late 1920s, Edwin Hubble recognized that the shift in light from distant objects toward the red end of the spectrum meant that those objects were moving away from Earth. The best explanation for these observations was that the universe was not static but was expanding. More recent observations, such as cosmic background radiation, are also better explained by an expanding universe rather than a static universe. What aspect of scientific methodology best explains the replacement of the static universe theory with the expanding universe theory?
A Science and its methods are always improving. Scientists needed newer, more sensitive instruments to detect the slow expansion of the universe.
B Hubble’s observations were extremely popular with the public, leading to overwhelming support for the new theory.
C The new theory explained Hubble’s observations, and it was tested and supported by additional observations. The theory was accepted because it was the most powerful explanation available for many observations.
D The natural progression of science is that all theories are eventually replaced by new theories until one is established as law
Answer:
C
Explanation:
B has nothing to do with the scientific method. The public does not determine a scientific law. Facts do.
D may be sort of true, but it does not explain Hubble's process. Nor does it explain what Hubble actually did and how he reported it. D is incorrect.
A was never implied (although it is likely true. On the other hand, many great scientific principles are uncovered with very simple apparatus.) A might be 1/2 true.
I think the best answer is C. It is general enough to be accepted. There are two theories mentioned. So C is the best answer.
Ernest was looking at the following diagram of a cell. Which statement best explains how he should classify the cell?
A. He should classify the cell as a plant cell because it has a cell membrane.
B. He should classify the cell as an animal cell because it has a flagellum.
C. He should classify the cell as a plant cell because it has cytoplasm.
D. He should not classify the cell as either a plant cell or an animal cell.
Answer:
C
Explanation:
I believe it is C because it looks like it has chloroplasts in it
What struggles do aquatic organisms have that terrestrial ones do not?
If you are not going to actually answer the question don't even bother.
Answer:
Aquatic animals can be found in water habitats, which can be either fresh or marine. Terrestrial animals can be found exclusively in the land. Aquatic animals respire through gills or their skin. ... The main difference between aquatic and terrestrial animals is their habitat and modes of living
Explanation:
Answer:
being destroyed easily
Explanation:
aquatic organisms are faced with lots of challenges,,,eg.....oilspillage on water bodies,this prevents entry of oxgen into water hence suffocation leading to death,also growth of weeds such as water hyacinth which suck nutrientss and oxygen from water,,,also aquatic krganisms are hunted by lots of predators compared to that of terrestrial
Archaebacteria and eubacteria are classified into different kingdoms, but at one time they were both classified in the Kingdom Monera. Which statement best describes why the classification of these organisms was changed?
A. The kingdom became too large and had to be made into two smaller kingdoms.
B. New biochemical data showed different evolutionary relationships within the kingdom
C. The archeabacteria and eubacteria habitats were too different to be classified in the same kingdom.
D. Chromosomal analyses indicated a new genetic combination had arisen within a certain organisms in the kingdom.
Answer:
I think the option C is correct
The statement best describes the classification of these organisms was changed is the archeabacteria and eubacteria habitats were too different to be classified in the same kingdom.
What are the characteristics of Archaebacteria?Archaea is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria.
Archaeal cells have unique properties separating them from the other two domains, Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla. Classification is difficult because most have not been isolated in a laboratory and have been detected only by their gene sequences.
The common characteristics of Archaebacteria known to date are these: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat.
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how are macromolecules used in the body? (2-3 sentences)
4. This photograph was taken in 2004, 24 years after Mount Saint Helens erupted. Compare and contrast this photo with the previous three. What changes do you see in the biotic and abiotic factors? Does anything surprise you about this series of photographs?
Answer:
In this picture the ground is now completely covered in vegetation and trees are growing back all along the road and sides of the picture. Then there’s little flowers and grass and bushed all over the place. In the other pictures the ground was bare, with the second and third pictures having bushes and other little vegetation starting to grow. Changes in the Biotic Factors: There are now larger trees, there is grass, flowers, small bushes, and other small vegetation growing. Changes in Abiotic Factors: The ground is no longer dust and ash, The dead trunks and branches are covered in vegetation for the most part and are decomposing.
Explanation:
Brainliest Please?!
Why do you think there are so many bones in the cranium? Why do you think we are born with separate cranial bones that later fuse together as we grow and develop?
Hi, rachellelunaa!!
I think the reason we have so many bones is because, firstly, the cranium is such a unique shape that we need multiple bones to form it. Also, another reason we are born with separate cranial bones is that when a baby is born, there is an incredible amount of pressure being administered to the baby during the process. The many unfused bones allow the child's head to be malleable, and therefore preventing damage to the skull and brain. As we grow, we no longer need these bones to be malleable and they fuse together.
I really hope this answers your question!!
The sutures are flexible, the bones can overlap during birthing, preventing the baby's head from pressing against the baby's brain and causing damage.
What are the cranial bones?Skeletal structure of the head. The cranium, which surrounds and protects the brain, is made up of cranial bones and facial bones (bones that form the eye sockets, nose, cheeks, jaw, and other parts of the face).
The two remaining cranial bones are covered by the frontal bone. The sphenoid bone and ethmoid bone are these.
Behind your eye sockets, the sphenoid bone supports the muscles of your face. At the peak of your nose, between your eye sockets, is the ethmoid bone.
Therefore, preventing damage to skull and brain, we are born with separate cranial bones.
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Asap i need help pls
Answer:
The right answer is C
Explanation:
Answer:
C
Explanation:
Because in ecosystem 1, the animals that eat insects have more sources of food than just insects, so that ecosystem would surive if the insects were to decline since the animals dont depend on JUST insects to surive
Which of these processes is most important for a person to replace worn-out body cells?
1. Adhesion
2. Cohesion
3. Mitosis
4. Photosynthesis
Answer:
Mitosis
Explanation:
Mitosis produces new cells, and replaces cells that are old, lost or damaged for a person's body cells.
When resistant bacteria multiply, what do they pass on to the next generation?
Answer:
Antibiotic use promotes development of antibiotic-resistant bacteria. Every time a person takes antibiotics, sensitive bacteria are killed, but resistant germs may be left to grow and multiply. Repeated and improper uses of antibiotics are primary causes of the increase in drug-resistant bacteria.
The resistant bacteria can reproduce rapidly because their competition (the non-resistant bacteria) has been destroyed by the antibiotic. When the resistant bacteria reproduce, they produce genetically-identical copies. These copies will all be resistant to the antibiotics.
Hope this helps :)
PLEASE HELP ME ASAP!!
Earth Science - AP_EX
Answer:
do you like food?
Explanation:
A moss begins to grow on a rock in an area that was previously uninhabited by life. This is an example of a __________ Choices: A. Pioneer species B. Climax community C. Disturbance D. Secondary succession ANSWER QUICK!!!
Answer:
The moss would be a pioneer species.
Explanation: