state two important changes that chromosoms must undergo before cell divsion can take place
Answers
Before the process of cell division can occur, the chromosomes undergo two crucial changes. The first is the replication of DNA, and the second is the condensation of chromatin into chromosomes.Chromosomes are composed of a condensed version of chromatin.
They are formed when chromatin is compressed into a smaller size by a series of changes to its shape, structure, and packing. Chromosomes are required for cell division because they allow for DNA replication and segregation. The second important change that chromosomes must undergo is DNA replication. DNA replication occurs in preparation for cell division. In this process, the double-stranded DNA molecule unwinds and separates into two complementary strands, each of which serves as a template for the synthesis of a new complementary strand.
DNA replication results in the production of two identical copies of the original DNA molecule. Chromosomes play a critical role in cell division. They undergo two crucial changes, which include the replication of DNA and the condensation of chromatin into chromosomes.
DNA replication is the process of unwinding and separating the double-stranded DNA molecule into two complementary strands. Chromatin is compressed into a smaller size by a series of changes to its shape, structure, and packing, resulting in the formation of chromosomes.
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Related Questions
describe the relationship between water velocity and water loss
Answers
Answer:
If the water velocity decreases, the rate of erosion increases.
In a certain plant, yellow petals are dominant over pink petals. If you crossed
a pure-breeding plant that produced yellow petals with a pure-breeding plant
that produced pink petals to produce 400 offspring, which of the following
results would you expect?
A. 294 offspring will have yellow flowers, and 106 will have pink
flowers.
B. All 400 offspring will have pink flowers.
C. 200 offspring will have yellow flowers, and 200 will have pink
flowers
D. All 400 offspring will have yellow flowers.
Answers
Because yellow is more dominant so it’s more common for offsprings to have yellow petals but some of the offsprings will also take some traits of the pink petals so it’s A!
Why does active transport require energy?
A) To move substances that lack concentration gradients
B) To move substances between concentration gradients
C) To move substances against their concentration gradient
D) to move substances along their concentration gradient
Answers
Why: I’m almost done with this
What is the main difference between Biomass, & Biofuel?
Answers
Biomass refers to all organic material that comes from plants and animals. The sources of it may include plant-derived materials that include forestry residues and urban wood waste. On the contrary, biofuel refers to the energy sources that come from biological materials such as plant material and animal wastes. Both of them are renewable resources. Biomass is burned to produce electricity and biofuels can be converted into liquid fuels which replace petrol from fossil fuel and diesel.
According to the chemiosmotic hypothesis, mitochondrial ETCs are organized so that _________ move across the inner membrane from the mitochondrial matrix to the intermembrane space as _________ are transported down the chain.
Answers
Answer:
Explanation:
Heres where to get your answer
https://www.info.com/serp?q=website%20medical&segment=info.0546&s1aid=3788024678&s1cid=11804561937&s1agid=114484240723&s1kid=kwd-944088888&utm_source=adwords&gclid=CjwKCAiAm7OMBhAQEiwArvGi3IMQUyr3aRG07nCggQt-8rAAgyPT3rJedCcJxTAl1ve9LJwgIxq21RoC4yQQAvD_BwE
Which phrase describes one characteristic of radioactive elements
Answers
Answer: d is the correct answer
Explanation:
describe 4 ways a temperature increase of only 1c (global warming) would impact humans and / or ecosystems
Answers
Answer:
1. Food cycle- With Global Warming on the rise the food cycle is being thrown off due to some animals dying off because they aren't getting used to the extreme sudden heat this can also affect humans especially if we seafood. Global warming affects the ocean too killing off a lot of sea creatures that we eat sometimes like Shrimp for example. Study shows that Global Warming is heating up the ocean cooking the live shrimp in the ocean.
2. Timing of seasonal changes- Study shows that places that don't get hit by snowy weather in the Wintertime are getting pounded by winter storms. A perfect example of this is East Coast getting hit by wintery weather while West Coast sees some high temperatures with no moisture this is caused by global warming.
3. Extinction Risks- Another study shows that some animals such as elephants, Siberian Tigers, red Pandas are all on the Endangered species list due to the sudden change in the weather because of Global Warming which brings the extinction-level to an almost high rate. People all around the world are trying all they can to prevent animal species to go extinct and as I mentioned before if a species goes extinct it'll throw off the food cycle.
4. Range shifts- Since the temperatures are changing dramatically because of global warming it is causing a lot of species to migrate to a new area this is their way of surviving instead of dying off this can also disrupt the food cycle because if a certain species a predator perhaps moves to a different area the prey species will increase and those predators that migrated to a new area is causing a lot of habitat changes to another species its like natural selection and can cause a pretty bad change
So that is why people are up and arms about global warming and why they want to hurry up and come up with a plan to stop global warming or figure out a way to cool down the Earth because it'll not only end in species' extinction but it can lead to Human extinction.
Hope this helped :)
how dose a sprout turn into a tree?
Answers
Define: Enzyme (in your own words)
plz help
Answers
I neeeed helppppp
True False 1. Vertebrates are animals without a backbone or bony skeleton, such as a starfish. True False
2. Omnivores are organisms that rely on plants and animals for survival.
True 3. A starfish belongs to a group of aquatic organisms that live in freshwater.
True False 4. Echinoderms are a group of radially symmetricspiny-skinned land animals
Answers
a = false
b = true
c = true
d = true
Answers:
1. False.
2. True.
3. False.
4. False.
Explanation: Hope this helps! :)
I NEED A PICTURE OF FLVS CLASSES ALGEBRA 1 AND BIOLOGY 1 BOTH SEGMENTS COMPLETED WITH A LETTER GRADE OF “A” NOW!!! ASAP WILL GIVE 100 POINTS!!!!
Answers
Do I look up the picture
Natural selection states that complex organisms evolved through random mutations alone. True or False?
Answers
Answer:
False.
Explanation:
This statement is false because organisms don't evolve - populations do. New gene variants (i.e., alleles) are produced by random mutation, and over the course of many generations, natural selection may favor advantageous variants, causing them to become more common in the population. However, because mutation rates are low relative to population growth in most species, mutation alone doesn't have much of an effect on evolution.
Which mineral will scratch fluorite, galena, and pyroxene?
Answers
Answer:
Olivine, quartz, garnet and pyrite
Explanation:
The statement that, in garden peas, yellow seed is dominant to green seed means that:
A. when a true-breeding yellow seed parent is crossed with a true-breeding green seed parent, 1/2 of the offspring will have yellow seeds and 1/2 will have green seeds.
B. when a true-breeding yellow seed parent is crossed with a true-breeding green seed parent, all offspring will have yellow seeds.
C. when a true-breeding yellow seed parent is crossed with a true-breeding green seed parent, all offspring will have green seeds.
D. when a true-breeding yellow seed parent is crossed with a true-breeding green seed parent, 3/4 of the offspring will have yellow seeds and 1/4 will have green seeds.
Answers
Answer:
B. when a true-breeding yellow seed parent is crossed with a true-breeding green seed parent, all offspring will have yellow seeds.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Many kinds of data can be gathered in the study of ocean water. Predictions are based on accurate and precise scientific data. Which of these sets of data will yield the most precise data?
Answers
Hello. You did not present the answer options, which makes it impossible for this question to be answered accurately. However, I will try to help you in the best possible way.
The data set that will produce the most accurate data are the most specific and least general data, which have very specific characteristics and circumstances on the ocean water. An example of very specific data is the water temperature, where researchers will be able to interpret accurately and promote accurate data.
3. b) c) If a food label identifies the total number of kilocalories in a bowl of cereal as 140 and the carbohydrate kilocalories as 100, what is the approximate percentage of energy supplied by carbohydrates? Tas Klas 40%. 50% 60%. 70%
Answers
The approximate percentage of energy supplied by carbohydrates is 71%. Therefore, the closest option from the given choices is 70%. Therefore, option (D) is correct.
The label states that the total number of kilocalories in the cereal is 140, while the carbohydrate kilocalories amount to 100. To determine the approximate percentage of energy supplied by carbohydrates, we use a simple calculation. By dividing the carbohydrate kilocalories by the total kilocalories and multiplying the result by 100, we find that carbohydrates contribute approximately 71.43% of the cereal's energy content.
Percentage of energy from carbohydrates = (100 / 140) * 100
≈ 71.43%
When rounded to the nearest whole number, the percentage becomes 71%. Consequently, the closest option among the choices provided is 70%. This calculation helps consumers understand the proportion of energy they derive from carbohydrates when consuming the cereal, enabling them to make informed dietary choices based on their nutritional requirements. Therefore, option (D) is correct.
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Which statement describes early people’s beliefs about intelligence and emotions?
A.
Early people believed intelligence and emotions originated in the chambers of the brain.
B.
Early people believed that the fluid around the brain was the source of intelligence and emotions.
C.
Early people believed that sensations in the limbs gave rise to intelligence and emotions.
D.
Early people believed that the heart was the center of intelligence and emotions.
Answers
Early people believed that the heart was the centre of intelligence and emotions statement describes early people’s beliefs about intelligence and emotions.
What connection exists between intelligence and feelings?
The ability to identify emotion, use emotion and emotion-related information to reason, and process emotional information as part of general problem solving is known as emotional intelligence.
What characterises an emotionally intelligent person?
Understanding your emotions, what they're trying to tell you, and how your emotions affect those around you is emotional intelligence. It also affects how you see other people; when you get other perspectives, you may manage relationships more skilfully.
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Early people believed that the heart was the center of intelligence and emotions statement describes early people’s beliefs about intelligence and emotions.
What connection exists between intelligence and feelings?The ability to identify emotion, use emotion and emotion-related information to reason, and process emotional information as part of general problem solving is known as emotional intelligence.
What characterizes an emotionally intelligent person?Understanding your emotions, what they're trying to tell you, and how your emotions affect those around you is emotional intelligence. It also affects how you see other people; when you get other perspectives, you may manage relationships more skilfully.
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What is meant by solution which has high concentration of water ?
Answers
Answer:
The solution with the higher concentration of solutes (a.k.a liquids/water)
10 characteristic properties of a diamond
Answers
Answer:
Hardness.
Low coefficient of friction.
High thermal conductivity.
High electrical resistivity.
Low thermal expansion coefficient.
High strength.
Broad optical transparency from ultra violet to infra red.
Resistant to chemical corrosion
Biologically compatible
Limestone caves can develop when limestone rock is weathered. The weathering of the rock leaves an empty space that forms the cave.
Which of the following best explains how the limestone weathered?
Answers
The limestone got weathered by the moss as well as the plants which grew on the rock and broke it down.
The correct option is option c.
Weathered limestone can basically look like it has moss as well as plants growing on it, and this is due to a natural process called biological weathering. Biological weathering is basically defined as the breakdown of rocks by living organisms such as mosses, lichens, and other plants. These organisms produce acids which happen to dissolve the minerals in the rock, causing it to break down over time.
In the case of limestone, which is composed mainly of calcium carbonate, the acids produced by plants and mosses can react with the rock, causing it to dissolve and crumble.
Hence, the correct option is option c.
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--The given question is incomplete, the complete question is
"Limestone caves can develop when limestone rock is weathered. The weathering of the rock leaves an empty space that forms the cave.
Which of the following best explains how the limestone weathered?
a. Animals burrowed through the limestone.
b. Wind blowing across the surface eroded the limestone.
c. Moss and plants grew on the rock and broke down the limestone.
d. Water flowing through the rock dissolved the limestone."--
some organelles in eukaryotic cells have high h concentrations while others have low h concentrations. in this case, why is compartmentalization an advantage?
Answers
In summary, compartmentalization in eukaryotic cells provides the advantage of allowing organelles to create and maintain distinct H+ concentrations, enabling efficient functioning and regulation of various cellular processes.
Compartmentalization is an advantage in eukaryotic cells because it allows for efficient functioning and regulation of cellular processes. Organelles with high H+ concentrations, such as the lysosomes and the Golgi apparatus, are able to maintain an acidic environment that is crucial for their specific functions.
On the other hand, organelles with low H+ concentrations, like the mitochondria, utilize a proton gradient across their inner membrane to generate ATP through oxidative phosphorylation. This gradient is created by the pumping of H+ ions into the inter membrane space.
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Which of the following statements about photosynthesis is not correct?
(a) The light reactions produce ATP from sunlight energy
(b) The products of photosynthesis are used as reactants in cellular respiration
(c) The products of cellular respiration are used as reactants in photosynthesis
(d) Water is used during photosynthesis to capture the electrons released from excited chlorophyll pigments
(e) The products of the light reactions of photosynthesis are used to produce sugars in the Calvin cycle.
Answers
The correct option is: The products of cellular respiration are used as reactants in photosynthesis, option (c) is correct.
This statement is not correct. In cellular respiration, the products are carbon dioxide and water, which are the byproducts of cellular respiration. These byproducts are not used as reactants in photosynthesis. Rather, photosynthesis utilizes carbon dioxide, water, and sunlight energy to produce glucose (sugars) and oxygen.
The glucose produced during photosynthesis can then be used as a reactant in cellular respiration, where it is broken down to produce ATP (adenosine triphosphate) and carbon dioxide. So, the correct statement should be that the products of photosynthesis (glucose) are used as a reactant in cellular respiration, option (c) is correct.
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Which organism in Figure 2 feeds at only one trophic (feeding) level? WILL MARK BRAINLIEST!!!
1. Eagle
2. Frog
3. Snake
4. Thrush
Answers
Answer:
Eagle.......I think
Explanation:
cuz no other organism feed on the eagle here I guess
How much is DNA important to identify a group? Give a brief explanation on race ,whiteness and property? Does biological anthropologists and genome scientist need to add the relation between Europeans and Indigenous people while doing their research?
Answers
DNA is important in identifying genetic relationships within a group, but it alone is not sufficient to determine complex social constructs like race, whiteness, or property; the inclusion of social, cultural, and historical factors is crucial in understanding these concepts.
Biological anthropologists and genome scientists should consider the relationship between Europeans and Indigenous people in their research to provide a more comprehensive understanding of human genetic diversity and population history.
DNA analysis can provide valuable insights into genetic relationships within a group, such as determining genetic ancestry or identifying related individuals. However, race, whiteness, and property are social constructs that go beyond genetic factors and are shaped by historical, cultural, and socioeconomic factors. These concepts are complex and cannot be solely explained by genetic data. Therefore, it is important for researchers, including biological anthropologists and genome scientists, to recognize the limitations of genetic data and consider the broader social context when studying race, whiteness, and property.
In the context of researching Europeans and Indigenous people, it is crucial for researchers to acknowledge and incorporate the historical and ongoing relationships between these groups. This includes understanding colonization, displacement, and the impact of power dynamics on genetic diversity and health outcomes. By including this relationship in their research, scientists can contribute to a more accurate and nuanced understanding of human genetics and promote social and scientific equity.
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Organisms categorized into the same_____are able to reproduce.
A. Kingdoms
B. Species
C. Order
D. Class
Answers
Species
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When your cell makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by which action?
Answers
When cells makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by removing a phosphate group from ATP, producing energy plus ADP plus phosphate.
What is ATP?This is referred to as adenosine triphosphate and is the energy currency of the cells.
This is usually formed from the synthesis of ADP and a phosphate group thereby making it the most appropriate choice.
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Which is NOT connective tissue?
A. Bones
B. Fat
C. Blood
D. Neurons
Answers
In which part of the flower does the fertilization take place
Answers
Answer:
it is take place in the
ovary
Please describe this picture using directional terminology, body planes and body movements.
Answers
The human body is a complex organism and understanding its structure and functions requires a thorough knowledge of directional terminology, body planes, and body movements. In this image, we can see a person performing a side plank exercise which is an effective core-strengthening exercise.
We can also use directional terminology to describe the person's movements. The person is performing a lateral flexion to the side while maintaining an isometric contraction of the core muscles. The movement involves the transverse axis of the body, which runs from front to back, perpendicular to the frontal plane.
In conclusion, this picture shows a person performing a side plank exercise, positioned on the frontal plane and performing a lateral flexion movement. The person is using their core muscles to maintain the position while one arm is supporting their weight and the other arm is extended towards the ceiling.
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Use your percentages to create a graph (on the attached spreadsheet) of the amount of time a cell spends in each stage of cell division, based on a 24 hour day (or 1,440 minutes). The spreadsheet will be premade to do this calculation for you and produce the graph. You only need to type in the numbers of cells you identified per stage here manually for the graph to be created. Percent of cells in stage X 1,440 minutes = minutes of cell cycle spent in stage
Answers
The graph can be created by following the steps below based on the information given in the question.Use your percentages to create a graph (on the attached spreadsheet) of the amount of time a cell spends in each stage of cell division, based on a 24 hour day (or 1,440 minutes). The spreadsheet will be premade to do this calculation for you and produce the graph. You only need to type in the numbers of cells you identified per stage here manually for the graph to be created.Percent of cells in stage X 1,440 minutes = minutes of cell cycle spent in stage
Step 1:
Enter the percentages of cells in each phase of the cell cycle into the spreadsheet.Step 2:
Calculate the amount of time each phase takes based on the percentage of cells in that phase.To do this, multiply the percentage of cells in each phase by the total number of minutes in a day (1,440 minutes). The result is the number of minutes spent in that phase.
Step 3:
Enter the values calculated for each phase into the spreadsheet.Step 4:
Create a graph using the values entered into the spreadsheet. The graph should show the amount of time spent in each phase of the cell cycle based on a 24-hour day (or 1,440 minutes).About CellsThe cells is the smallest unit that composes the bodies of living things and is the place where the functions of life are carried out. Cells were first discovered by an English scientist named Robert Hooke in 1665.
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