The irreversible points in the cell cycle involve replication of the genome and separation of the sister chromatids. During which stages do these two events occur and why do you think they are irreversible?
Answers
The S phase is also called the synthesis phase because it is in this phase that the DNA in the 23 pairs of chromosomes is replicated. In the S phase, DNA is synthesized from its complete breakdown using replication.
The cell cycle has two irreversible points namely the Replication of genetic material and the modeling of sister chromatids.
The purpose of DNA replication itself is to multiply DNA to transmit traits to offspring. If the DNA does not replicate, then the DNA from the parents will not be passed on to their offspring, so there is no comfort between the genes of the parents and their offspring.Sister chromatid sisterhood is the main purpose of cell division is to form new, identical cells.Learn more about the cycle cell at https://brainly.com/question/5034994
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Related Questions
Puberty in humans is the result of changes in the ___________, which result in an increased secretion of _________, which then stimulates an increased secretion of __________.
Answers
Answer:
hypothalamus; GnRH
Explanation:
Puberty is the result of chanes in the hypothalamus. Causing increased secretion of gonadotropin-releasing hormone (GnRH)
Ecosystems with greater biodiversity have an increased stability.truefalse
Answers
Biodiversity maintains ecosystem stability by replenishing resources from time to time.
For example, an even number of species distributed throughout a forest ecosystem helps trees grow steadily. Increased species diversity can affect ecosystem functioning, such as productivity, by increasing the availability of species to exploit complementary resources, particularly if productive or efficient species are more likely to contribute to communities.
It may also increase the likelihood of being present in .Increased biodiversity in ecosystems, species and individuals leads to increased stability. For example, species with high genetic diversity, large populations, and adaptations to diverse conditions can survive disturbance, disease, and climate change.
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A bird is flying over a field. What will most likely happen if a toxin causes the
hydrogen ion pump to stop moving H+ ions outside the mitochondrial
membranes of the bird's cells?
A. The bird will fly a long distance because it will rely on energy from
glycolysis.
B. The bird will stop flying because it will quickly use up its remaining
energy.
C. The bird will fly only short distances because it will need to rest.
D. The bird will eat more food to build up its energy reserves in the
Krebs cycle.
SUBMIT
Answers
Answer:
B. The bird will stop flying because it will quickly use up its remaining
energy.
Explanation:
This is because the mitochondria is known as the power house of cells. Oxidative phosphorylation takes place in this organelle and it involves the conversion of ADP to ATP through the hydrogen ions(protons).
When the hydrogen ion channel is blocked, energy production in cells stop.
This is why the bird will stop flying as it would have used up its remaining energy and won’t have a new one to use to continue flying.
Answer:
B
Explanation:
A p E x
pablo and johanna have to do a yearlong study for their biology course. after some discussion, they decide to try comparing their dogs and the diet that they feed them. each has a dog from the pound, and both dogs are less than one year old. pablo feeds his shepherd-mix dog a special diet of wet and dry foods from the local vet, while johanna uses generic dry kibble from the supermarket for her bulldog. they want to see which diet results in bigger, healthier, faster-growing dogs. according to the information given, one dependent variable in this study will be .
Answers
Answer:
In this study, the dependent variable will be the size, health, and growth rate of the two dogs. This will be measured by comparing the size and health of the dogs before and after a period of one year, and by tracking any changes in their growth rate over this period. The independent variable in this study will be the type of diet fed to each dog; one dog will be fed a special diet of wet and dry foods from the local vet, while the other dog will be fed generic dry kibble from the supermarket.
give me brainiest
Which of the following is a FALSE statement about the properties of water?
A. Water is a great solute
B. Water is a universal solvent
C. Water can hydrogen bond to many things
D. Water has a high specific heat
Answers
Answer: C
Explanation: Water can hydrogen bond to many thing.
Hope this helps!
How have the people in Australia been affected by rabbits in Australia?
Choose all that apply
Responses
Their tax dollars have been used to try to control the rabbit population.
Rabbits are a food source for grazing livestock.
Rabbits might eat farmers' crops.
Rabbits eat vegetative cover, which has caused a decreased amount of food available for grazing livestock.
Answers
Answer:
Their numbers became so large that they destroyed crops and land, leading to soil erosion.
Answer:
Rabbits might eat famers' crops.
Their tax dollars have been used to try to control the rabbit population
Rabbits eat vegetative cover, which has caused a decreased amount of food available for grazing livestock.
Explanation:
I took the test
this is an ecosystem energy pyramid that illustrates how much energy is found at each tropic level of a food chain. select all the statements about this pyramid that are true.
approximately 90% of energy from one trophic level is transferred to the next trophic level
looking at the total amount of energy in an ecosystem, most energy can be found in the producers
approximately 10% of enerfy from one trophic level is transferred to the next trophic level
this energy pyramid explains why there are few tertiary consumers in most ecosystems
looking at he total amount of energy in an ecosystem, most energy can be found in the primary consumers
Answers
The statements about this pyramid that are true are: Approximately 10% of energy from one trophic level is transferred to the next trophic level.
The ecosystem energy pyramid illustrates how much energy is found at each tropic level of a food chain. Looking at the total amount of energy in an ecosystem, most energy can be found in the producers.This energy pyramid explains why there are few tertiary consumers in most ecosystems.Looking at the total amount of energy in an ecosystem, most energy can be found in the primary consumers.
Approximately 90% of energy from one trophic level is lost in the form of heat or used up in metabolic processes, meaning only 10% is available for transfer to the next trophic level. This means the statement "approximately 90% of energy from one trophic level is transferred to the next trophic level" is false. The energy pyramid shows why there are few tertiary consumers in most ecosystems because the energy available at that level is limited. Most of the energy in an ecosystem is found in the producers.
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What object revolves around Earth and is made of rock?
Galaxy
Moon
Planet
Sun
Answers
Answer:
moon
Explanation:
a moon is made of rock and revoles around earth
Answer:
moon
Explanation:
moon moon moon if its corect say thanks
Why does altruism exist in nature? How can you explain altruistic behaviors between different species? For example, some species of birds will help other birds nest and forage for food.
Answers
Answer:
for maintenance of an ecosystem
Explanation:
Every September, monarch butterflies migrate to Mexico by the millions. They stay there for the winter. They live in the branches of fir trees. Tall trees keep the butterflies safe from the rain. Trees also help to block the dangerous cold night air. Scientists are worried about monarch butterflies. The winter of 2010 was very troubling. There were fewer butterflies in Mexico that winter. In fact, it was the smallest population since 1993. Scientists think that they know why. Many fir trees are being cut down in Mexico. Without enough trees, the butterflies cannot survive.
Do It!
The butterflies use the trees for _________.
Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selected
A directions
B closets
C shelter
D food
Answers
The butterflies use the trees for shelter and is therefore denoted as option C.
What is Shelter?This is referred to as a structure or place which offers protection to different types of organisms and examples include burrows, tree branches etc. This helps to shield them from the harsh climatic conditions or from predators.
Organisms such as butterflies use tree branches as shelter from the harsh climate during winter because the leaves form a canopy hence protecting them in this scenario.
This is therefore the reason why there was a reduction in the population of the butterflies when the trees were cut.
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How are young plants are supported
Answers
Answer:
You are a wh0re
Explanation:
Which phases can line up correctly to cause an eclipse to occur?
Answers
A solar eclipse occurs when the Moon comes between the Sun and Earth
What is an eclipse?When the Moon passes between the Sun and Earth, a solar eclipse occurs, emitting a shadow on Earth that either fully or partially blocks the Sun's light in some areas. This only happens sometimes, because the Moon doesn't orbit the same horizontal as the Sun and Earth do. A solar eclipse occurs when the moon gets between Earth and the sun, and the moon sends out a shadow over Earth. A solar eclipse can only happen during the new moon's phase when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface. Solar eclipses occur only at the new moon phase when the Moon is between Earth and the Sun. throughout a solar eclipse, the Moon casts a shadow on Earth, and blocks or partially blocks our view of the Sun.
So we can conclude that an eclipse of the Moon can only occur at Full Moon.
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The sequential replacement of species in a community after a forest fire is:
Answers
The sequential replacement of species in a community after a forest fire is called Secondary Succession.
Secondary succession occur in the order as follows:
Pioneer species>intermediate species>climax community
It occurs in areas where a biological community has already existed but some of that community has been removed by disturbances that did not eliminate all life and nutrients from the environment.
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Earth is heated by global warming how Ian the water cycle affected global warming
Answers
Answer:
The heat increases the rat of the water making it easier for the water to turn onto vapor
Explanation:
Answer:
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Explanation:
As the global temperatures increases, more evaporation and precipitation will be the result. Hence, speeding up the water cycle.
At higher temperatures, there is more evaporation from land and sea into the atmosphere. Since the air gets warmer, it can hold more water vapor, this can lead to high rainstorms or precipitation.
Why is it harmful if your DNA is damaged?
Answers
Staging systems for pressure ulcers are based on the depth of tissue destroyed. Briefly describe each stage and what type of dressing would be appropriate for each stage.
Answers
The stage and type of dressing would be appropriate for each stage are stage 1 pressure ulcer the skin is intact, stage 2 pressure ulcer the skin is broken and wound is shallow, Stage 3 pressure ulcer, the skin is broken and the wound is deeper and Stage 4 pressure ulcer, the skin is broken and the wound is very deep
The staging systems for pressure ulcers are based on the depth of tissue destroyed. In Stage 1 pressure ulcer, the skin is intact, but there is localized redness, which may be warm or cool to the touch, hard or soft compared to the surrounding skin. The appropriate dressing for this stage is to maintain a moist wound environment. Dressings that can be used are hydrogels, transparent films, and hydrocolloids.
In Stage 2 pressure ulcer, the skin is broken and the wound is shallow, the ulcer may appear as an abrasion, blister, or shallow crater. The appropriate dressing for this stage is to maintain a moist wound environment. Dressings that can be used are hydrocolloids, foam dressings, and hydrogels. In Stage 3 pressure ulcer, the skin is broken and the wound is deeper, the ulcer extends to the subcutaneous tissue. The appropriate dressing for this stage is a moisture-retentive dressing to promote healing. Dressings that can be used are hydrogels, hydrocolloids, alginates, and foams.
In Stage 4 pressure ulcer, the skin is broken and the wound is very deep. The ulcer extends to the muscle and bone. The appropriate dressing for this stage is to control drainage and odor. Dressings that can be used are hydrocolloids, alginates, foams, and specialty absorptive dressings. So therefore the stage and type of dressing would be appropriate for each stage are stage 1 pressure ulcer the skin is intact, stage 2 pressure ulcer the skin is broken and wound is shallow, Stage 3 pressure ulcer, the skin is broken and the wound is deeper and Stage 4 pressure ulcer, the skin is broken and the wound is very deep.
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a large plant that grows in a warm, swampy environment and faces substantial herbivory most likely . group of answer choices has a much smaller than usual difference between its gpp and its npp. allocates a relatively large proportion of its npp to roots. allocates a relatively large proportion of its npp to secondary compounds. all of the above
Answers
has a sizable percentage of its npp devoted to secondary chemicals. This is due to the possibility of secondary chemicals, such as poisons and other chemical defences, aiding in the plant's herbivore defence.
The warm, swampy atmosphere may also encourage the development of bigger plants with more powerful roots that can help them anchor themselves and take up nutrients from the nutrient-rich soil. The plant can thrive under these circumstances by allocating a large part of NPP to the roots. Life on Earth depends on a wide variety of creatures called plants. Through the process of photosynthesis, they are primary producers that turn light, water, and carbon dioxide into energy. The development and reproduction of the plant are then fueled by this energy.
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Beginning at the snout, identify the major physical characteristics of a hog.
Answers
Answer:
Pigs are stout-bodied, short-legged, omnivorous mammals, with thick skin usually sparsely coated with short bristles. Their hooves have two functional and two nonfunctional digits. Domestic North American pigs originated from wild stocks still found in European, Asian, and North African forests.
Under certain conditions, people are affected by stimuli so weak that they fail to consciously notice them. This is best illustrated by experiments involving
sensory adaptation.
subliminal priming.
perceptual set.
prosopagnosia.
Answers
The phenomenon described, where people are affected by stimuli so weak that they fail to consciously notice them, is best illustrated by experiments involving subliminal priming. The second option is correct.
Subliminal priming refers to the presentation of stimuli below the threshold of conscious awareness. These stimuli can be presented very briefly or masked in a way that prevents conscious perception. Despite not being consciously perceived, subliminal stimuli can still have an impact on subsequent cognitive or behavioral processes.
In experiments involving subliminal priming, researchers expose participants to subliminal stimuli and then measure their responses or behaviors. These experiments aim to investigate how these subliminal stimuli can influence perception, memory, attitudes, or decision-making processes.
Sensory adaptation refers to the phenomenon where our sensory receptors become less responsive to a constant stimulus over time. It is not directly related to the conscious perception of weak stimuli.
Perceptual set refers to the tendency to perceive things in a certain way based on our expectations, past experiences, or context. While perceptual set can influence conscious perception, it is not specifically related to stimuli that are too weak to be consciously noticed.
Prosopagnosia is a neurological disorder characterized by the inability to recognize familiar faces. It is not directly related to the conscious perception of weak stimuli.
Therefore, experiments involving subliminal priming best illustrate the phenomenon described in the question.
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Write out the surface area and volume formulas.
Answers
Surface area = 2(lb + bh + lh) sq. units
Volume = (l x b x h) cubic units
What is surface area?A solid object's surface area is a measurement of the overall area that the object's surface occupies.
What is volume?Volume is the measurement of three dimensional space. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units.
What are formulas?A formula is a fact or a rule written with mathematical symbols. Usually, an equal symbol is used to connect two or more values. Using formula, you can determine the value of a second quantity once you are aware of the value of the first. It facilitates speedy question-solving.
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how the plantlets are produced?
Answers
Pioneer species such as lichen and moss inhabit an area after a major disturbance such as a volcanic eruption. Over time, other species are found in the disturbed area and the number of pioneer species decreases. Why does the number of pioneer species decrease? The amount of available sunlight is reduced. The pioneer species can no longer thrive. ⊝ The area has more soil to support complex plants. The competition increases between organisms. ⊝ The area is more susceptible to the wind. Seeds are captured in the pioneer plants and germinate at a higher rate. ⊝ The temperature is not as extreme as it was following the disturbance. Fewer of the pioneer species reproduce. ⊝ CLEAR ALL ❮ PREVIOUS ... 3 4 5 6 7 8 9 10 11 12
Answers
Answer:
The competition increases between organisms.
Explanation:
Primary succession occurs after a disturbance or disaster that leaves open spaces with no living organisms. These new open areas are the case, for instance, of a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. No previous species inhabiting this area are left.
These scenarios allow new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.
First, pioneer species arrive. These are the first inhabitants, mostly lichens or plants with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat. They make it more suitable for the posterior establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the ground and making it better with time. Competition becomes more frequent between species. The first species are eventually eliminated by competition, while new species keep appearing and competing for resources. Habitat modification keeps on going while new species establish. They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. This sequence continues until there is not more facilitation, and the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.
In the early-19th century announcement that the American continents were not subjects for future colonization by any European country.
a. True
b. False
Answers
The given statement that the declaration made in the early 19th century that no future European colonization of the American continents would take place is true.
In the early 19th century, the United States made an announcement known as the Monroe Doctrine, declaring that the American continents were not open to further colonization by any European country. This policy was put in place to protect the sovereignty of the newly independent nations in the Americas and prevent European interference.
The doctrine also stated that any attempts by European powers to colonize or interfere with countries in the Americas would be viewed as acts of aggression and provoke a response from the United States, the statement is true.
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What nerve stimulates the masseter and temporalis muscles to elevate the mandible during mastication and swallowing?.
Answers
Trigeminal nerve stimulates the masseter and temporalis muscles to elevate the mandible during mastication and swallowing
The branch of the trigeminal nerve that consists of a motor component in the mandibular nerve. These branches supplies motor innervation for the facial muscles involved in mastication which is responsible for including the masseter, temporalis muscle, and the lateral and medial pterygoids.
Trigeminal nerve innervate deep temporal branches of the mandibular nerve, and vascularized by the deep temporal branches of the maxillary artery and middle temporal branches of the superficial temporal artery. The temporalis muscle functions mainly as an elevator of the mandible.
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A student is setting up a dihybrid cross for flowers. The first trait is color, with red (R) being dominant and blue
(r) being recessive. The second trait is stripes, with stripes (S) being dominant and lack of stripes (s) being
recessive. The first flower on the cross has blue coloring and no stripes. What is the flower's genotype? Type
four letters only.
Answers
Answer:
rrss (homozygous recessive)
Explanation:
The flowers colour is blue so must have 2 recessive alleles (rr).
The flower also has no stripes also have 2 recessive alleles (ss).
give an example of how bacteria can be beneficial. explain
Answers
Answer:
They help digest food, make vitamins, and play other important roles. Humans also use bacteria in many other ways, including: Creating products, such as ethanol and enzymes. Making drugs, such as antibiotics and vaccines.
The lake that was built near Galetown caused it to have more severe rainstorms.
Answers
The construction of a lake near Galetown has resulted in intensified rainstorms in the area.
In recent years, Galetown underwent a significant development project that involved the construction of a large lake in close proximity to the town. While the lake was initially intended to serve as a recreational attraction and a potential source of water supply, its unintended consequence has been the exacerbation of rainstorms in the region.
The presence of the lake has disrupted the local weather patterns and created a microclimate effect. As warm air rises from the lake's surface, it interacts with cooler air masses in the atmosphere, leading to the formation of convective currents. These convective currents, in turn, generate thunderstorms and heavy rainfall.
The lake acts as a heat source, evaporating moisture into the air and increasing the humidity levels. This enhanced humidity provides favorable conditions for the development of rain-producing clouds. Additionally, the lake's large surface area allows for increased evaporation, further contributing to the moisture content in the atmosphere.
Furthermore, the lake alters the wind patterns in the region. The presence of a significant water body disrupts the natural airflow, causing air to converge over Galetown. This convergence of air masses leads to the uplift of moist air, creating a conducive environment for intense rainstorms.
In conclusion, the construction of the lake near Galetown has inadvertently resulted in more severe rainstorms in the area. The lake's impact on local weather patterns, through the generation of convective currents, increased humidity, and alteration of wind patterns, has contributed to the intensified rainfall experienced by Galetown and its surroundings.
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Which of the following do all living things have in common
Answers
For all living things, what is true is that they all need and use energy. Option C.
What should you know about all living things?All living things require energy to carry out essential biological processes such as growth, reproduction, movement, and maintaining homeostasis.
Energy is obtained through various means, such as the consumption of food, photosynthesis in plants, or other forms of energy acquisition in different organisms.
Energy is a fundamental requirement for the functioning and survival of living organisms.
The above answer is in response to the full question below;
Which of the following do all living things have in common
A. They all have a similar cellular organization.
B They all share the same kind of genetic material to varying degrees.
C They all need and use energy.
D They all move and grow.
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help me what climate is it
Help meeee
Answers
Answer:
The climate is very dry.
Explanation:
It isn’t polar because the Pampas aren’t icy.
I have no idea what temperate continental means. Sry…
It isn’t tropical rainy because the Pampas don’t have any trees.
My answer: probably dry, but I can’t give you a definite answer.
12. When you rub the skin of a shark from head to tail, it feels very smooth, but when you rub it
towards the head, it is rough like sandpaper. This is because the scales that make up its skin
point towards the tail to reduce friction. This would be an adaptation for
a. Feeding & Digestion
b. Locomotion
C. Buoyancy Regulation
d. Circulation & Gas Exchange
Answers
Answer:
b. Locomotion
Explanation:
Reduction of friction helps faster movement.
The lower the friction, the faster the shark can move.