A student examines a thin section of an onion-root tip and records the number of cells that are in each stage of the cell cycle. She observes 93 cells in interphase, 15 cells in prophase, 4 cells in metaphase 6 cells in anaphase and 2 cells in telophase. If the complete cell cycle in an onion-root tip cell requires 24 hours, what is the average duration of each stage in cycle?

Answers

Answer 1

Answer:

given:

Total number of cells in all stages = 93+15+4+6+2 = 120

Total time = 24 hours.

solution:

Percentage of cells in interphase

= 93 * 100 / 120 = 77.5%

 in prophase

=15 * 100 / 120 = 12.5%

 in metaphase

= 4 * 100 / 120 = 3.33%

 in Anaphase

= 6 * 100 / 120 = 5%

 in telophase

= 2 * 100 / 120 = 1.66%

The percentage of cells present in various phases exhibits the time spend by each cell in that phase.

Total minutes

= 24*60 = 1440

Total minutes spent in interphase

= 77.5 * 1440

= 1116 minutes

in prophase =12.5 *1440

=  180 minutes

 in metaphase = 3.33*1440

=  48 minutes

in Anaphase = 5*1440

= 72 minutes

 in telophase = 1.66*1440

=  24 minutes


Related Questions

Explain how a school bus uses all of these energy types.

-Mechanical
-Chemical
-Electrical
-Thermal

Answers

Answer:

Mechanical

94 percent of all school buses in America are powered by diesel engines because of their reliability, durability and safety. Almost half of these (46 percent) rely on the cleanest, near-zero emission diesel engine technology.

Chemical

school bus uses petroleum as chemical potential energy.

Electrical

An electric bus draws electricity from the power grid and stores it in a battery that can be recharged once the electricity has been used up. This basically mirrors the way our electronics work. We plug them in and let the battery charge and then use them wirelessly until it's time to charge again

Thermal

They heat the cold coolant from engine's block to 160° F in as little as one hour, then pump it back to the vehicle's engine and heat exchangers. The result: engine is preheated and the vehicle's heat exchangers distribute an abundance of heat to the vehicle's interior.

Which of the following best describes where life is found around the world and why we find certain animals on certain continents and islands?

Question 4 options:

Fossils


Carbon Flow Dynamics


DNA sequences


Biogeography

Answers

Answer:

biogeography is the answer

What was the result of the Reconstruction Amendments (the Thirteenth, fourteenth, and fifthteenth Amendments)?

Answers

Slavery was abolished and voting rights were extended to all male citizens. The Thirteenth Amendment (ratified in 1865) abolished slavery. The Fifteenth Amendment (ratified in 1870) extended the voting right to all male citizens without discrimination in terms of race, color, or previous servitude.

Please no links they are not working
Which climate experiences the greatest range in temperature?

A. Taiga
B. Desert
C. Tropical Rainforest
D. Desert and Taiga

Answers

Answer:

C!

Hoped this helped! <3

HELP ITS FOR SCIENCE
Subject A (without diabetes)
Food type Starting blood glucose level (mg/dL) Blood glucose level after 1 hour (mg/dL) Blood glucose level after 2 hours (mg/dL) Blood glucose level after 3 hours (mg/dL)
candy 100
nutrient 100
fats 100
dairy 100

Subject B (with type 1 diabetes)
Food type Starting blood glucose level (mg/dL) Blood glucose level after 1 hour (mg/dL) Blood glucose level after 2 hours (mg/dL) Blood glucose level after 3 hours (mg/dL)
candy 100
nutrients 100
fats 100
dairy 100

What will the glucose levels be through out the next 3 hours? Put an answer for 1, 2, and the third hour for each box.

Answers

Answer:

Increases after each hour.

Explanation:

The blood glucose level will be increases after each hour in Subject B because no production of insulin. Due to this disease, the body can't regulate the level of glucose so by eating sweets like candy increases blood sugar in the body of subject B. The main reason of increase blood glucose level is the no production of insulin in the body of type 1 diabetes patient because this insulin hormone regulate the blood glucose level in the blood.

Answer:

subject A hour one 160 hour two 220 hour three 280

Explanation:ya welcome for subject b 1OO EVERY HOUR

is the following truth or false? lava flows on the moon sometimes overlap highlands, showing that maria deposits are younger than highlands

Answers

Answer:

false

Explanation:

Can someone name and explain each lymph organ?

Answers

Answer:

The lymphatic system consists of all lymphatic vessels and lymphoid organs. For example, the lymph nodes, spleen, thymus as well as the lymphatic tissue found in the small intestine (Peyer’s patches) and throat (adenoid tonsils, palatine and tubal tonsils), to name a few, all represent lymphatic organs.Hence, rather than representing a single organ, the lymphatic system comprises a circulatory network of vessels and lymphoid tissue and cells in every part of the body. It works together closely with the blood-producing (haematopoietic) system in the bone marrow, thereby playing a vital role in immune responses to protect the body from various pathogens. Also, the lymphatic vessel network helps transporting nutrients and waste products in the body.

Answer:

please follow me

Explanation:

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what would happen if you gave your dog a tiny piece of chocolate?

Answers

I depends of how much chocolate you give them. If you give them a lot they can get sick and even die. If you give it a little it can get sick or just go on about their day

3
7
Identify the elements of natural selection by completing the stage of the cycle.
Reproduction
Natural
Selection

Answers

Answer:

This is kinda confusing

Explanation:

Reproduction > Natural Selection > Adaptation/Evolution

Which statement best describes the movement of ocean waves? Water moves across the ocean's surface water remains in the same place as wave (energy) travels through it water moves because there is a difference in density of the water creating a wave none of these

Answers

Answer:

water remains in the same place as wave (energy) travels through it

Explanation:

Winds influence the ocean and its movements. Air current running on the ocean surface transfers energy to water. A wave is nothing else than energy. When the winds provide energy to the water surface and produce waves, it occurs a particular water molecules´ motion. They move in circles from up to down, up to a certain depth, and go back to the surface. And they do so while energy from the wave is passing through. Waves are the ones that move through the ocean until they reach the shore, where the energy is transferred to land. Water molecules remain in the same general area, while energy travels from molecule to molecule as a wave.

In Amish populations, we see a much higher amount of a specific type of dwarfism compared to the rest of the human population. Which term is best applies to this situation?




Both of these

Genetic Drift

Founder Effect

None of these

Answers

Answer: Both of these

Explanation: trust me

PLZZZ HeLP!!! WILL MARK BRAINLIEST!!

2. Which explanation for the increase in genetic diversity of this red panda population is supported by this data?

(1 point)

Red pandas in this population have encountered new predators due to the increase in deforested land, and this new predation pressure has selected for different adaptations.

Red pandas in this population have increased the number of cubs birthed by each mother every year, and this increase in population has resulted in more genetic diversity.

Red pandas in this population have encountered new environmental challenges presented by the increase in deforested land, and this has selected for different adaptations over time.

Red pandas in this population have started eating a new diet due to the increase in deforested land, and the new dietary conditions have selected for different adaptations.






5. Which of the following scenarios would reduce the number of inheritable traits in a population, causing the individuals in that population to remain very similar to one another?(1 point)

A swamp that is being drained in order to build houses.

A forest that is being converted into farmland.

A lake that is drying up due to shifts in river flow.

A desert that has existed for millennia.

Answers

Answer:

2. C - Red pandas in this population have encountered new environmental challenges presented by the increase in deforested land, and this has selected for different adaptations over time.

5. D - A desert that has existed for millennia.

Explanation:

2. Predation (A) and fertility (B) are easy scratch-off answers -- given the situation of deforestation, these factors will not influence genetic diversity. Although eating patterns can lead to new adaptations, the best answer is C because it results directly from the issue at hand: deforestation.

5. To limit the amount of population diversity, you would have to maintain the same environment as much as possible. In other words, migration and isolation lead to the creation of new species per Darwin's theory of Natural Selection. For that reason, the only plausible answer here is D.

I truly hope my answers and explanations can help you on this assignment! Be blessed! Be awesome! You've got this!

Cows that have a white and brown coat color (think spots, dapples, or patches) are an example of what?

1. Codominance
2. Incomplete Dominance
3. Multiple Alleles
4. Polygenic Traits


Yall pls helppp​

Answers

Answer: I think it’s codominance

Explanation: Codominance: condition in which both alleles of a gene are expressed in heterozygous offspring.

What would happen if bees did not make it back to their hive? What is the evidence?
(No LINK)

Answers

I guess they will find another hive
If the bees are unable to return to the hive the hive would slowly over time begin to collapse. The reasoning for this is because if you have a job let’s say a construction site that has no workers then eventually that construction site will never be completed or maintained the same applies for the hives of bees

12 POINTS!!

Semiconductors are materials that conduct electric current better than insulators but not as well as conductors.


Please select the best answer from the choices provided

T
F

Answers

Answer:

True

Explanation:

Hope this helps!

Answer:

True :)

Explanation:

give an example of something that might stop a cell from checking things during the cell cycle

Answers

Answer:

A checkpoint is one of several points in the eukaryotic cell cycle at which the progression of a cell to the next stage in the cycle can be halted until conditions are favorable. ... The G2 checkpoint ensures all of the chromosomes have been replicated and that the replicated DNA is not damaged before cell enters mitosis.

A mutation in a tumor suppressor gene may stop a cell from checking things during the cell cycle.

Tumor suppressor genes are normally expressed genes that control the progression of a cell through the cell cycle.

These genes (tumor suppressor genes) act to repair mutations that occurred during DNA replication, slow down cell division, activate programmed cell death pathways (i.e., apoptotic pathways, etc).

For example, p53 is a tumor suppressor gene capable of controlling cell division rate by keeping cells from proliferating in an uncontrolled manner.

In consequence, mutations of the p53 gene are often observed in cancer cells that lost their ability to regulate the rate at which they grow.

In conclusion, a mutation in a tumor suppressor gene may stop a cell from checking things during the cell cycle.

Learn more in:

https://brainly.com/question/16188646

When it is sunny at the North Pole, it is dark at the South Pole. True or false

Answers

Answer: True

HOPE THIS HELPS

true because sun is only shining on opposite side and can’t reach the south pole so it’s dark

AGAIN PLEASE DON'T ATTACH A LINK



Which statement best describes a bacterial cell?

А. It contains more than one cell.

B. It is a complete organism.

С. It is part of a larger organism.

D. It contains different kinds of cells.​

Answers

B , bacteria is a complete organism

During the spring of 2015, it was predicted that the number of chipmunk babies born
increased by 20%. Data collected through observations confirmed this
prediction. Chipmunks were seen scurrying all over the forest.
Grizzly bear
Red-Tailed
hawk
chipmunk
Deer
marmot
grouse
berries and flowers
grasses
seeds
Mushrooms
And
earthworms
How will this increase in the number of chipmunks most likely effect this food web?

Answers

Answer:

The population of Red-Tailed Hawks will increase.

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.

Rain forests supply a wide variety of resources. Some of
these resources include rubber, bamboo, coconut oil, and
medicines. The map shows where Earth's tropical rain
forests are found.
Rainforests
Northern
hamisphere
Southern
hemisphere
Equator
Based on the map shown above, which statement is most accurate?
O A. Most rain forests are found near the equator.
O B. Rainforests are found all over Earth,
O C. Rainforests are no longer found on Earth.
O D. Most rain forests are found near the North and South poles.

Answers

Answer:

Explanation:

I would say A

Answer:

O A. Most rain forests are found near the equator.

Explanation:

old: Agree or Disagree--The daughter cells created during mitosis are identical to the parent cell.
old: Agree or Disagree--Mitosis is used to increase genetic variation in organisms.
Est the four steps of mitosis below in order:
How are haploid cells like our gametes created? What is the difference between meiosis and mitosis?
Notes Meiosis
Meiosis is the process of creating
haploid cells.
(n).
1. Each species has a fixed set of
2. Body cells (also known as
(2n).
3. Sex cells (also known as
have
sets of chromosomes, also called
have
set of chromosomes, also called

Answers

Answer:

1) agree: the daughter cells are all identical as theyre made asexually

2)disagree: the cells are clones of one another so it limits genetic variation

3) the diffference between mitosis and meiosis is that mitosis is asexual with one parent and each daughter cell is genetically identical. with meiosis, the cells created can be different from one another as theyre produced with 2 parent cells. so meiosis creates genetic variation while mitosis does not

Explanation:

Which is a primary way that enzymes affect these reactions? *

Answers

Answer: chemical reactions

Explanation: The function of an enzyme is to speed up chemical reactions. They do this by lowering the activation energy, which is the minimum energy that must be available for a chemical reaction to occur. If the energy required is lowered, the reaction can go faster.

Plant cells are different from animal cells. The diagram below identifies four different structures in a plant cell. Compared to the structures in an animal cell, which of the following structures is found only in a plant cell?

a. Mitochondrion
b. Cell Wall
c. Cytoplasm
d. Nucleus

Answers

B.cell wall , hope this helps
The cell wall is only found in a plant cell

Briefly describe what uses the oceans can pose to humanity. Write your response in the essay box below.

Answers

Answer:

Water, fresher climate, not only scientific factors but also a psychological factor (nice beaches, palms, other wildlife, etc.)

Which of the following best describes natural selection?

A. organisms vary in their physical traits, and some are inherited

B. Organisms compete for food and shelter

C. organisms best suited to their environments are most likely to survive and reproduce

D. Organisms produce more offspring than can survive

Answers

Answer: C

Explanation: according to Darwin, out of the vast no of individuals which compete for a place in the world, only those having advantageous variations survive and reproduce
C remember the key word is natural

Organisms such as yeast can reproduce through mitotic division. During this type of reproduction, nondisjunction is possible.
True
False

Answers

I believe that it is true
i think it is true because true

Explain how biotechnology has used the idea of ‘cut and paste’ when it comes to biotechnology *not multiple choice question*

Answers

Answer:

Biotechnology, the use of biology to solve problems and make useful products. The most prominent area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering. ˗ˏˋ ❤︎ ࿐

Explanation:

Explain why ecologists think the focus of conservation efforts should be ecosystems, not individual species?

Answers

It depends on the species and its primary threats, there is no universal solution. Many South East Asian species are primarily threatened by poaching ("Empty forest syndrome"), whereas many "reptiles" and amphibians from Madagascar can apparently cope with fairly high levels of collection (e.g. Golden Mantella [Mantella aurantiaca]), while the loss of their often small habitat is the primary threat.

A chromosomally normal (XY) male was born with a penis just one centimeter long and a small opening similar to that of a female vagina This individual would be referred to as O A) transsexual B) bisexual O C) intersexed OD Transvestite​

Answers

Answer:

I think it is C intersexed but its not B for sure

Explanation:

Answer:

They'd be referred to as C) Intersexed.

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