Answer:
nondisjunction can lead to aneulodies by results in daughter cells with abnormal chromosome numbers (aneuploidy). (if u want a more in depth answer just look it up and you'll find one, but i hope this was somewhat helpful lol)
PLEASE HELP ME I WILL MAKE YOU BRAINLIEST!!!!!!! Need help with number 31!!
Explanation:
A is 6H2O
B is C6H12O6
C is 6O2
A series of strong storms opened a stream channel between two lakes. The western lake contains a large, diverse population of a species of minnow (these are small fish). The eastern lake has never been populated by fish. When the channel opened, a small group of fish migrated to the eastern lake. Soon after, the stream channel dried up and was never opened again. The fish in the eastern lake thrived and continued to reproduce, building a large population over time. Compared with the fish in the western lake, what characteristics would you expect the population in the eastern lake to exhibit
Answer:
Same characteristics of fishes are present.
Explanation:
Same characteristics of fishes are present in both western and eastern lakes because in eastern lake the present fish species were migrated from the western species so the characteristics of fish population will be same. If the fishes that is present in western lake are small in size so it has same size in eastern lake. Their eating behavior and other characteristic show resemblance with the fishes present in western lake.
_______identify the organ or structure Opening (valve) between stomach and small intestine.
Answer:
The pyloric sphincter valve
Explanation:
The pyloric sphincter is a thin, circular band of visceral muscle surrounding the pyloric opening at the inferior end of the stomach. It is found at the border of the stomach's final segment , the pylorus, and the small intestine's first segment, duodenum.
Cereals and legumes are complementary in the diet because Group of answer choices Cereals counteract the antinutritional factors in legumes A diet combining legumes and cereals will have a good balance of essential amino acids Cereals are high in lysine Legumes are high in cysteine and methionine
Answer:
A diet combining legumes and cereals will have a good balance of essential amino acids
Explanation:
Cereals are grains that are rich in vitamins, carbohydrates, protein and other essential nutrients, they include wheat, rice, sorghum etc. Legumes include a wide range of seeds, fruits, nuts, vegetables that are rich in proteins, carbohydrates and other nutrients, examples include peas, beans, lentils etc.
Cereals and legumes are referred to as staple foods, they are usually used to complement each other because combining them will result in a good balance of essential amino acids. In cereals, lysine is a limiting amino acid but is usually in high amounts in legumes. However, in legumes cysteine, trypthophan and methionine are the limiting amino acids but are found in cereals. Therefore, this makes legumes and cereals complementary in the diet as it significantly increases the protein quality of the diet.
Which substance would most likely form sedimentary rock? cooled lava melted rock changed igneous rock small pebbles
Answer:
Small pebbles.
Explanation:
Sedimentary rock is formed by small sediments that, under pressure, join to form a larger rock. Things such as fossils, sand, pebbles, and shells can be found in sedimentary rock.
Hope this helps!
The substance would most likely form sedimentary rock - small pebbles
Sedimentary rocksare formed by the accumulation of sedimentsSedimentation is the collective name for processes that cause these particles to settle in place.Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped.If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.small Pebbles can be called a rock when they are cemented and create a conglomerate – a clastic sedimentary rock.Thus, The substance would most likely form sedimentary rock - small pebbles
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Within a flock of birds, some birds have long narrow beaks, and other birds have short wide beaks. Environmental changes happen that make it harder for birds that have short wide beaks to find food. After several generations, most of the flock has long, narrow beaks. Which statement best describes the trait of the type of beak that a bird in this flock has
Answer:
Explanation:
Based on this scenario it the statement that represents this is that "Having a long, narrow beak is an inherited trait that is genetically passed down." An Inherited trait is a specific feature or characteristic of an organism that has been passed on to it in its genes through its ancestors. This usually happens as an adaptation to certain changes in the organism's environment in order for it to survive better.
Answer:
A: Having a long, narrow beak is an inherited trait that is genetically passed down.
Explanation:
The questions are on the image
Answer:
9 no. ans = 1. plastids.
2. cell wall.
10 no. ans
i)= nerve cell helps the body to receive impulse from affected part brain and response from brain to affected part.
ii)= palisade helps plants to carry out photosynthesis efficiently.
iii)= root hair cell helps in absorption of minerals ion and water from root to other parts of plant.
iv) = red blood cell helps in transporting oxygen to different parts of body.
11 no. ans
12 no.ans
i) = the group of cells having similar function and structures is called tissue.
ii)= organs are the group of various tissue working together to perform a particular task .
iii)= thecollection of organ which works or function independently is called organ system.
hope it helps..
Answer:
9. There are chloroplasts in a plant cell but not in animal cells. (plants need chloroplast for photosynthesis)
There is a cell wall around a plant cell (that gives it a fixed shape) but animal cells don't have any cell walls.
10. i- Nerve cells transmit and process information.
ii- palisade cells allow photosynthesis to take place. They contain numerous chloroplasts which help in absorbing light energy.
iii- The role of root hair cell is to absorb mineral salts and water from the soil.
iv- red blood cells help transport oxygen across the body.
11. divide the number of cells by the diameter of field view.
10 cells/3.5 mm = 2.86 mm/cell
12. i-a tissue is a group of similar cells (which work together to perform a certain function)
ii- An organ is made of a few types of tissues that work together to perform a specific function. (e.g the stomach)
iii- several organs working together for a common purpose makes an organ system. (e.g the respiratory system or the digestive system)
Which statement is not true about prokaryotic cells? They are always single-celled organisms, and they never contain mitochondria. They have a circular loop of DNA instead of multiple linear DNA molecules. They lack a nucleus, but they do have ribosomes. They may have flagella, but they never have cilia. They all have a rigid cell wall instead of a plasma membrane.
Answer:
They lack a nucleus, but they do have ribosomes.
Explanation:
Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid.
Which of the following are likely impacts of
overfishing?
-The populations of higher order consumers decrease
-Oxygen dissolved in sea water decreases
-The biodiversity of the ecosystem decreases
-Large numbers of producers are removed from the
ecosystem
Answer:
-The populations of higher order consumers decrease
Explanation:
More fish are being killed meaning less food for consumers which means that tertiary consumers will be left with less food. One small problem can have a devastating effect.
The pathogenesis of pneumonia includes the inhalation of microbial agents and the resulting of which of the following? (Select all that apply.) Inflammation Lung consolidation Formation of exudates Alveolar wall thickening Decreased lung compliance
Answer:
Inflammation
Lung consolidation
Formation of exudates
Explanation:
Pneumonia could be caused by Bacteria, viruses, and fungi. The air sacs are usually affected and characterized by presence of pus in the sacs. It could be serious and life threatening and can be treated with antibiotics.
The pathogenesis of pneumonia includes the inhalation of microbial agents, Inflammation , Lung consolidation and Formation of exudates.
A maternal condition defined by the progressive dilation and effacement of the cervix that begins after 20 weeks and before term (the 37th week of pregnancy). This condition occurs because risk factors that are known or unknown cause uterine contractions and the cervix to dilate and efface prior to the time that the fetus is considered Term or 37-41 weeks. Many known and unknown causes for the condition exist. This condition is the leading cause of morbidity and mortality of newborns.
Answer:
preeclampsia
Explanation:
Answer:
preeclampsia
Explanation:
What major factors play a role in global warming? decrease in human activity and normal climate conditions natural factors and human activity natural factors and normal climate conditions decrease in human activity and natural factors
Answer:
natural factors and human activity
Explanation:
Global warming is the gradual increase in the earth's atmospheric temperature. It is a cause of concern for every country as it affects the whole planet. Global warming is caused by the production and release of Greenhouse gases into the atmosphere.
Greenhouse gases like C02, methane, nitrous oxide etc. are gases that have the ability to trap heat energy, hence, the increased accumulation of these gases in the atmosphere leads to a rise in global temperature.
The emission of greenhouse gases, which in turn induces global warming effect, is majorly contributed by natural factors and human activities. Natural occurrences like volcanic eruption etc release these gases into the atmosphere. Also, on a large part, the emission of CO2 caused by the burning of fossil fuels is the major problem. This burning of fossil fuels is carried out by humans. Coals, petroleum and other non-renewable source of energy are used daily, which creates havoc to the environment.
Therefore, the contribution of natural factors and human activities play a huge role in global warming.
Answer:
B
Explanation:
A person has eaten the following vegetables over the past week: carrots, pinto beans, corn, cauliflower, coleslaw, and potatoes. Which of the following vegetables should he eat to be sure that he has included vegetables from each of the subgroups for the week? a. Iceberg lettuce b. Green peas c. Broccoli d. Eggplant e. Mushrooms
Answer:
B
Explanation:
Green Peas
Answer:
Green plants broccoli Eggplant
The map shows regions of Africa Europe Asia and Australia. It also shows a range of deforestation zones in these continents. On the map, red stands for high deforestation dark green stands for medium deforestation blue stands for low deforestation and pink stands for unavailable data identify the areas where species are most at risk of habitat loss.
Answer:
Red area stand for high deforestation
Explanation:
The species are most risk of habitat loss at red zone that stands for high deforestation.
Because of high deforestation, the natural habitat is getting lost at faster rate in red area which will affect the natural vegetation and animals living in the forest.
Hence, the correct answer is red zone stands for high deforestation.
Answer:
Anything in a red zone
Explanation:
For me it was, Africa and Australia
During cytokinesis plant cells form a cell plate instead of pinching apart like an animal cell, propose a reason why there is this difference.
Options are not given in the question. So, the complete question is as follows:
During cytokinesis plant cells form a cell plate instead of pinching apart like an animal cell, propose a reason why there is this difference.
A. The plant cells do not contain centrioles do they cannot pinch apart
B. Plant cells have rigid cell walls so they form a cell plate instead of pinching apart.
C. Plant cells do not divide as rapidly as animal cells
D. In plant cells the large central vacuole prevents the cell from pinching apart.
Answer:
B. Plant cells have rigid cell walls so they form a cell plate instead of pinching apart.
Explanation:
Plant cells and animals cell are somehow different from each other in their structure as well as in functions such as plant cells form a cell plate while animals cells, pinching apart the cells during cytokinesis.
This difference is because plant cells have rigid cell walls that form a cell plate unlike complex cells like animals that being pinch into halves.
Hence, the correct option is "B".
Answer:
Plant cells have rigid cell walls so they form a cell plate instead of pinching apart.
Explanation:
How are the alleles for sex-linked traits inherited? They are passed from the Y chromosome in parents to the X chromosome in offspring. They are passed from the X chromosome in parents to the XY chromosome in offspring. They are passed from parents to offspring on the X and Y chromosomes. They are passed from any chromosome in the parents to the X or Y chromosome in the offspring.
Answer:
they are passed from parent to offspring on the X and Y chromosomes
i just took this test on ed :D
Alleles for sex-linked traits are inherited in such a way that they are passed from parents to offspring on the X and Y chromosomes.
Generally, sex-linked traits are traits or genes that are found on the sex chromosomes only. In humans, females have XX sex chromosomes while males have XY sex chromosomes.
Thus, X-linked traits are passed from parents to offspring via the X chromosomes only. Since both males and females have X chromosomes, it means both genders can have X-linked traits.Y-linked traits are passed from parents to offspring via the Y chromosomes only. Since only males have Y-chromosomes, it means that only the male gender can have Y-linked traits.More on sex-linked traits can be found here: https://brainly.com/question/1381309
In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion. What does this say about the conclusion? It is well supported. It is weakly supported. It is inconclusive. It is refuted.
Answer:
It is weakly supported.
Explanation:
All the factors in each experiment are different. There are not any controls to ensure the results are reliable. When all the factors vary, it cannot be determined whether the factor being tested was the cause of the result, or another factor was the cause. Although all the reasearchers reached the same conclusion, it cannot be proven whether it was caused by the specific factor being tested, or if it was merely a coincidence.
During multiple experiment, if the results are the same or indicate the same conclusion then the reliability of the conclusion increases. Thus option A is correct.
What is the conclusion?The conclusion is the sum of all the observations during our experiment that gives the outcome of our investigation.
During cancer research on the different types of cells, conditions, and different experimental designs end up with the same conclusion which makes it more reliable. So option A is correct.
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I heard that mitochondria increase if we exercising. So, if i was exercising and suddenly stop exercising. Will the number of mitochondria same, and more food neededbfor energy and more energy not use and more fats produce?
Will i produce more fats when i stop exercising than when i never do exercise?
Please answer with the explanation
Answer:
I believe the amount of mitochondria in our body only increases after long term exercising.
When you are exercising, you do not produce more mitochondria straight away. Even after you stop, the amount of mitochondria will be the same.
I believe the production of mitochondria and the improvement of your muscles is the same. You need to exercise for awhile before you can get more mitochondria in your body.
As for your amount of food needed, it is not according to the amount of mitochondria you have. It is according to how much energy you need.
You should be able to tell how much food you need. So, you actually wont produce more fats. As long as you eat the correct and moderate amount of food.
You will not produce more fat when you stop exercising than when you never exercise. Like I said, the amount of fat produced is according to your food intake. Your food intake is according to your energy needs. As long as you eat moderately, you will not produce more fat. In fact, you will be able to burn fats better after long term exercise because your body will be healthier and able to moderate itself.
Which of these conclusions is most likely correct about the two pairs of atoms?
Answer:
D. Carbon and oxygen form covalent bonds but sodium and chlorine form ionic bonds
Explanation:
Chemical bonds form between the atoms of elements. The types of chemical bondings that form are: covalent bond, ionic bond and more. Covalent bonds are bonds formed when atoms share valence electrons rather than transfer it. The shared bonding is in such a way that the outermost shell of both atoms are filled. This is the case of carbon and oxygen atoms in the diagram.
On the other hand, ionic bonding involves the transfer of electrons from one atom to another in order to form electrically charged ions that are bound to one another. This is the case of sodium atom, which has one valence electron in its outermost shell and transfers it to chlorine atom, which has seven electrons in its outermost shell. The sodium atom becomes a positively charged ion (+1) while the chlorine atom becomes negatively charged (-1).
Match the name of the greenhouse gas with one of the human activities that produces it.
carbon dioxide
industrial processes
fluorinated gases
agricultural and industrial activities
methane
production and transport of oil and natural
gas
nitrous oxide
burning fossil fuels
Answer:
carbon dioxide- burning of fossil fuels
fluorinated gases- industrial processes
methane- production and transport of oil and natural
gas
nitrous oxide- agricultural and industrial activities
Explanation:
Greenhouse gases are gaseous components that induces greenhouse effect. This means that due to their structural ability to trap heat energy in the atmosphere, they contribute to the global warming effect on the Earth. However, this greenhouse gases are produced in large amounts as a result of the day-to-day anthropogenic activities. The following are the greenhouse gases and how they are produced.
Carbondioxide (CO2)- Carbondioxide is the most common and important greenhouse gas. It is generated via natural processes like respiration but also produced when fossil fuels e.g coal, petroleum etc. are burned.
Fluorinated gases- This is another greenhouse gas caused by activities of man. Fluorinated gases are produced in industries during the production of certain products.
Methane- Methane is a gaseous hydrocarbon and the principal constituent of natural gas. Therefore, the production and transportation of oil and natural gases can lead to the escape of methane into the atmosphere.
Nitrous oxide- Nitrous oxide is an oxide of nitrogen. It is mainly produced via agricultural processes such as nitrification and denitrification or use of fertilizers etc. and also industrial actions.
Answer:answer in pic
Explanation:
Dark skin (a result of increased melanin production in equatorial peoples) is likely a response to ultraviolet (UV) radiation, because UV radiation can cause Group of answer choices skin cancer. hypothermia. rickets. hypoxia.
Answer:
skin cancer
Explanation:
because a human skin system is not evolved to handle the harsh conditions invoked by ultraviolet rays
Some people have sustained brain damage and lost the ability to identify color. Other people sustained different brain damage and lost the ability to detect motion. What does this indicate about our visual system
Lethal genes (genes that result in the failure to develop a vital organ or metabolic pathway) are nearly always recessive. Animal breeders who discover a unique trait and selectively breed to increase the occurrence of that trait often encounter a noticeable increase in lethal genes. Why
Answer:
Though these genes are recessive, it is still very much possible for the offspring to inherit this, and the lethal gene is no different.
Explanation:
Suppose this animal breeder picked a dog who appeared to be happy and healthy and paired with another healthy dog. One of these healthy dogs may have this recessive lethal gene, though they have not been affected by it, their offspring may be likely to.
Egg membranes from three eggs were carefully taken out and labeled as a, b , c. Each of these membranes were filled with 1% solution of sugar. Membrane A was immersed in 0.5% sugar solution, Membrane B was immersed in 1% sugar solution and Membrane c was immersed in 2% sugar solution. Predict the behavior of the three membranes?
Answer:
The correct answer would be -
Membrane A - Hypotonic solution - the movement of water towards inside the cell
Membrane B - Isotonic soltion - there will be no movement of water
Membrane C - Hyertonic solution - the movement of water towards outside of the cell
Explanation:
This experiment deals with tonicity as this solution will affect the tonicity of the egg membrane. In membrane A there are more solutes inside the cell than outside the cell so it is hypotonic solution so the movement of water will be towards inside the cell.
In membrane B the solutes are equal in both sides so there will be no movement as its isotonic condition while in membrane C the solution is in hypertonic situation as the solutes are more outside than inside.
Thus, the behavior of the membranes are-
Membrane A - Hypotonic solution - the movement of water towards inside the cell
Membrane B - Isotonic soltion - there will be no movement of water
Membrane C - Hyertonic solution - the movement of water towards outside of the cell
Which of the following is an example of adaptive radiation? One population of squirrels becomes two separate species over a long time. One population of lizards forms 15 separate species over a short time. One species of birds becomes better suited to its environment over time. One species of fish forms when two species of fish begin to breed with each other.
Answer:
B. One population of lizards leads to 15 separate species over a short time.
Explanation:
Adaptive radiation is a process in which organisms diversify rapidly into a multitude of new forms, particularly when a change in the environment makes new resources available, creates new challenges and opens environmental niches.
Adaptive radiation occurs when a single ancestral species diversifies into a variety of different species, each with different adaptations to fit different ecological niches.
When does the adaptive radiation occur ?This often occurs when a group of organisms colonizes a new, relatively unexploited environment, and the different ecological niches available in that environment drive the evolution of different adaptations in different subgroups.
The example of one population of lizards forming 15 separate species over a short time is a classic example of adaptive radiation. In this case, the ancestral population of lizards likely colonized a new area with many different ecological niches.
Over time, different subgroups of lizards evolved adaptations that allowed them to exploit these niches in different ways, leading to the diversification of the group into many different species.
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can someone help plz!?
Answer:
Biotic factors and abiotic factors, plant and light energy, herbivores, heterotrophs, omnivores, carnivores, primary consumer, decomposers and tertiary consumers.
Explanation:
Both biotic and abiotic factors are interacting with each other in an ecosystem. Plants use light energy from the sun to produce their own food. Herbivores are the organisms that feed on producers (plants). Heterotrophs are those organisms which are unable to make their own food. Omnivores are the organisms that eat both plants and animals. Carnivores feed on animals only. Primary consumers are the consumer which feed on plants. Decomposers helps in the breakdown of dead bodies of plants and animals. Tertiary consumers feed on secondary consumer.
Covalent modification:_____.
a. can involve the addition of phosphate groups.
b. can activate an enzyme.
c. produces modifications that can sometimes be reversed.
d. affects the activity of an enzyme by adding or removing a chemical group.
e. all of these are correct.
Answer: Option E.
All is correct.
Explanation:
A. can involve the addition of phosphate groups.
b. can activate an enzyme.
c. produces modifications that can sometimes be reversed.
d. affects the activity of an enzyme by adding or removing a chemical group.
Because Covalent modifications are enzymes catalyzed changes in the production of protein that involve the removal or addition chemical groups.
Covalent modifications can target a single or many Amino acids and it will alter their chemical properties.
Addition of phosphate group is a covalent modification because it control enzymes activity.
Covalent modification is reversible because it involves addition or removal of phosphoryl group to enzymes.
covalent attachment of another molecule can affect the activity of enzymes and many other proteins. In these occurence, the molecule that act as donor provides a functional moiety that modifies the properties of the enzyme.
A person with the genetic disorder Klinefelter's syndrome has an extra x-chromosome (genotype XXY). What can you predict is the most likely genetic mutation that results in Klinefelter's syndrome?
Answer:
The correct answer is non-disjunction at the time of meiosis.
Explanation:
A disorder, which takes place in males exhibiting an additional X-chromosome and is an outcome of an error in cell differentiation resulting in anomaly known as the Klinefelter's syndrome. Due to non-disjunction the egg or the sperm may acquire an additional X-chromosome. When these unusual cells take part in the genetic makeup of a person, then that individual most probably suffers from the condition termed as Klinefelter's syndrome.
In the majority of the circumstances, the division of the cells takes place generally during the development of the sperm, and at the same time, there may be certain errors at the time of egg development. Generally, the condition is mostly seen in the offspring of women that conceive after the age of 35.
Maureen is writing a report on how the brain may use dreams to consolidate and organize the information, stimuli, and memories observed and collected over the course of the day. Which theory of dreams is Maureen researching? a) psychoanalytic theory of dreams b)information processing theory c)physiological function theory d)neural activity models
B) Information Processing Theory
The information processing theory states that dreaming is a process to deal with information and observations collected from daily life and memories. It creates images, impressions, and narratives inside a person’s head.
Question 4 of 18
These box plots show the prices for two different brands of shoes.
65 70 75 80 85
Brand A
HTH
20
65
80 85
95
Brand B
TH
TT
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Price ($)
Which statement is the most appropriate comparison of the spreads?
Answer:
Brand B
Explanation:
brand B is correct