Answers
Answer:
Root hairs appear in the root maturation zone and differentiate from unspecialised cells called trichoblasts.
Explanation:
Root hair arises as a small protrusion surrounded by a cell wall, they are found in the piliferous area; they can originate in unspecialised epidermal cells, in some called trichoblasts. The bump begins to elongate and moves away from the epidermis, forming root hair. The root hairs as they lengthen, it is seen that their content shows a polarized distribution, the apical part is constituted mainly by vesicles secreted by the Golgi apparatus that contain the precursors of the cell wall that are to be released by exocytosis. Trichoblasts can be arranged in different ways, there are roots where any of the cells that are part of the rhizodermis can give rise to a root hair. In other roots, trichoblasts and atricoblasts have been seen to be distinguished alternately along a row of cells.
Related Questions
Keystone species are those that are a necessary component to the stability of the ecosystem, and without them, many
other organisms would not survive and the ecosystem can collapse. Which of these is NOT an example of a keystone
species and the role it plays in Georgia's ecosystems?
-0)
A)
beaver; their dams create small ponds to help other species have a place to
Live and helps to stimulate the growth of plants
B)
kudzu; kudzu was introduced from Japan as an ornamental plant, and the
Civilian Conservation Corps used it to help reduce soil erosion
alligators; their tails dig holes that hold water during times of drought, and
this water is used as a source for drinking water by many species
D)
red cocaded woodpecker; they drill deep nests into Georgia's pine trees,
and when not in use by the woodpecker, many other organisms will use
them
Answers
Answer:
The correct answer is - option C. alligators; their tails dig holes that hold water during times of drought, and this water is used as a source for drinking water by many species.
Explanation:
Beavers are keystone species as they help other species to get habitat and also help plants to grow by the holes or dams they make. Kudzu is a keystone species of an ornamental plant which lowers the soil erosion in their abundance.
Red cocaded woodpecker is a keystone species as they create pits in the pine trees that are helpful for other species to live.
Alligators also keystone species but not for digging holes and hold water but the influencing the prey and maintaining the animals in the ecosystem.
Answer: B
Explanation: USATestPrep
explain the difference between a natural fertilizer and a artificial fertilizer
Answers
example of primitive plant in kingdom plantae
Answers
Answer:
A) Thallophytes
B) Bryophytes
C) Pteridophytes
D) Gymnosperms
Explanation:
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the inclusive wealth index was created as a replacement for gdp for which reason, failure of GDP to account for literacy rate, unemployment rate, wealth, or resources within a nation
Answers
Answer:
failure of GDP to account of wealth.
Explanation:
the main reason for the creation of inclusive wealth index as a replacement for GDP because GDP can't tells us about the multi-dimensional nature of development. The inclusive wealth index measures the wealth of nations with the help of comprehensive analysis of production of a country. That is, it measures all of the assets including manufactured, human and natural capital of the country GDP is an indicator of a standard of living of a society while on the other hand, inclusive wealth index is an indicator of the wealth present in a country/
A new virus has been identified by DNA sequencing methods in a remote location in the South Pacific. The World Health Organization is very concerned because infection with this virus has a death rate of 20% of all infected individuals and no vaccine is available. This is an example of a(n) _____ disease.
Answers
Answer:
an emerging infectious disease
Explanation:
According to the World Health Organization (WHO), an emerging infectious disease can be defined as a newly identified and previously unknown infection in a population that may lead to serious public health concerns at local and/or international level. Emerging infectious diseases usually are caused by pathogenic organisms (like viruses) already present in the environment that acquire the ability to infect a new host species as an adaptive response to changes in ecological conditions. Some examples of emerging infectious diseases include, among others, Ebola virus disease, Chikungunya virus disease, H1N1 Influenza virus disease, etc.
What were the main lessones you learned about living things
Answers
Answer:
- Most living things need food, water, light, temperatures within certain limits, and air. Living things have a variety of characteristics that are displayed to different degrees: they respire, move, respond to stimuli, reproduce, grow, and are dependent on their environment.
Which of the following would be a good way for a college student to reduce his or her intake of added sugars?
A. Choose grilled or baked chicken instead of fried chicken.
B. Choose a cup of whole fruit instead of a cup of fruit punch.
C. Choose skim milk instead of whole milk.
D. Choose potato chips instead of corn tortilla chips.
Answers
Choose grilled or baked chicken instead of fried chicken A" can reduce intake of added sugars.
What is the cause of sugar in the body?Glucose comes from two major sources food and the liver. Sugar is absorbed into the bloodstream where it enters cells with the help of insulin. The liver stores and makes glucose. When glucose levels are low such as when you haven't eaten in a while the liver breaks down stored glycogen into glucose.
High blood sugar causes many of the warning signs of diabetes listed above:
Heavy thirst.Blurry vision.Peeing a lot.More hunger.Numb or tingling feet.Fatigue.Sugar in your urine.Weight loss.Therefore excess of sugar in the body can lead to high blood pressure such diabetes but student can reduce his or her intake of added sugar by choose grilled.
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what differences if any, would assay show if performed using milk that was past its expiration date and had an off-putting odor.
Answers
Answer:
The color will disappear.
Explanation:
Due to the absence of oxygen in the expired milk, the actual color of milk disappear. There are certain bacteria such as Pseudomonas present in the milk which is responsible for the change in color. With the passage of time, Pseudomonas starts growing in the milk and release certain toxin which spoils milk. They grow in both condition i. e. in the presence and absence of oxygen. Change in color is due to chemical releases by Pseudomonas.
50
Which of these does not apply to the human microbiome?
Select one:
of
O A. It is 10 human cells to one microbial cell.
estion
O B. It affects our health.
C. Includes all microbes.
O D. Our diet affects our microbiome.
Answers
A solution that has a low concentration of H+ Ions is consider basic 7?
Answers
An acid is a substance that
imagine that they have been invited to speak to a
group of parents with very young children. Using
research in the text as a guide, describe
environmental factors that promote favorable
mental development in infants and toddlers. What
environmental factors tend to undermine mental
development? Why is high-quality child care or
early intervention especially important for infants
and toddlers living in persistent poverty
Answers
2. Some environmental factors can undermine mental development in infants and toddlers, including:
Neglect Exposure to toxins.Lack of stimulation:3.Why is high-quality child care or early intervention especially important for infants and toddlers living in persistent poverty?
High-quality child care and early intervention can help to mitigate some of these negative factors and provide children with the support and stimulation they need to develop strong cognitive and social-emotional skills.
Solutions to questions:1. Infants and toddlers' mental development is significantly influenced by environmental factors, such as the quality of the child's interactions with caregivers, the availability of stimulating toys and activities, and the overall safety and stability of the child's environment. Here are some specific factors that can promote favorable mental development in infants and toddlers:
Responsive caregiving: Infants and toddlers need responsive and sensitive caregivers who are attuned to their needs and provide consistent, nurturing care. This kind of caregiving helps to build a strong foundation of trust and security, which is essential for healthy social and emotional development.Safe and stable environment: Infants and toddlers need a safe and stable environment to explore, learn, and play. This means that the environment should be free from hazards and provide ample opportunities for exploration and play.Stimulating toys and activities: Infants and toddlers need toys and activities that are age-appropriate and provide opportunities for exploration, discovery, and learning. These toys and activities should be engaging and challenging but not overwhelming.2. On the other hand, some environmental factors can undermine mental development in infants and toddlers, including:
Neglect and abuse: Infants and toddlers who experience neglect or abuse may develop a range of developmental delays and emotional problems. These children may have difficulty forming healthy attachments, regulating their emotions, and developing language and social skills.Exposure to toxins: Infants and toddlers who are exposed to environmental toxins, such as lead or pesticides, may experience developmental delays and cognitive impairments.Lack of stimulation: Infants and toddlers who experience a lack of stimulation may miss out on crucial opportunities for learning and development. This can occur in situations where the child is isolated or not given enough opportunities for social interaction and play.3. High-quality child care and early intervention are particularly important for infants and toddlers living in persistent poverty. Research has shown that children growing up in poverty are more likely to experience negative environmental factors, such as neglect, abuse, and exposure to toxins. High-quality child care and early intervention can help to mitigate some of these negative factors and provide children with the support and stimulation they need to develop strong cognitive and social-emotional skills.
NOTE: High-quality child care can provide children with a safe and stable environment and access to stimulating toys and activities, which can further promote positive mental development.
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characteristics of contaminated water
Answers
Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.
Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.
Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.
Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.
Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.
Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.
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which feature of earth's crust is an effect of compression over a long period of time?
A. Tilting of rock layers
B. Fault-block mountains
C. Folded mountains
D. Motion at transform faults
Answers
Answer:
Folded mountains
Explanation:
it's correct
The feature of the earth's crust that is an effect of compression over a long period of time is folded mountains, which is in Option C, as the folded mountains are formed when rock layers are subjected to compression over a long period of time.
What is a folded mountain?Folded mountains are formed when rock layers are subjected to compression over a long period of time. This causes the rock layers to buckle and fold, forming large, uplifted mountain ranges, and the process of folding can occur at convergent plate boundaries, where two tectonic plates are moving towards each other and causing compression in the rock layers in between them. The Himalayan mountain range, which spans several countries including India, Nepal, and China, is an example of a folded mountain range that was formed by the collision of the Indian and Eurasian tectonic plates.
As a result, the folded mountains in Option C are a feature of the earth's crust that is the result of long-term compression.
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explain how a kidney machine works if you have a kidney failure
Answers
Answer:
Explanation:
A kidney machine, also known as a hemodialysis machine, filters your blood through a dialyzer, which works like a kidney and filters out extra salt, waste, and fluid. The machine has built-in safety checks to ensure the process is safe and effective. A pump in the machine slowly draws out your blood, then sends it through the dialyzer. Your cleaned blood is sent back into your body through the second needle in your arm.
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Where is the gene for eye color found in a cell
Answers
Answer:
OCA2 and HERC2
Explanation:
What is one reason why life probably does not exist on Jupiter, Saturn, Uranus, and Neptune?
A.) They have no gravity
B.) They are the gas planets
C.) They are the giant planets
D.)They are the rocky planets.
Answers
Answer:
I would say your best answer choice would be B - They are the gas planets.
C and D are just stu.pid, and you should have enough common sense to rule those out
With A, we can survive without gravity (hence space stations, astronauts, ect)
Explanation:
- Eijiro <3
Love your pfp btw! :D
What do you think is the most
dangerous time period for a patient with
CF? Justify your answer.
Answers
I think that the most dangerous time period for a patient with cystic fibrosis is;
Age 35 - 44.Cystic fibrosis is a disease that results when there is a malfunctioning of the epithelial cells that line the walls of the sweat glands, lungs, digestive, and reproductive systems.
It causes the skin to taste salty. The patient suffers from shortness of breath and recurrent pneumonia.
In the graph shown, ages 35-44 seem most dangerous for patients with cystic fibrosis because that is the time when the various bacteria that affect the lungs of patients reach their peak and maintain a constant rate.
Therefore, the patients have a high rate of succumbing to the disease during this period.
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In the image below, identify the correct descriptions for structures A and B.
1. Structure A is a protein, while Structure B is cholesterol.
2. Structure A is cholesterol, while Structure B is a protein.
3. Structure A is hydrophobic, while Structure B is hydrophillic.
4. Structure A is hydrophillic, while Structure B is hydrophobic.
Answers
Answer:
D
Explanation: Structure A is hydrophillic, while Structure B is hydrophobic.
In the image below, the correct descriptions for structures A and B is Structure A is hydrophilic, while Structure B is hydrophobic. Thus, option D is correct.
What is hydrophillic and hydrophobic?
Hydrophilic is defined as the material with the special affinity of water and it has been spreads just across the maximizing contact and it has been known as the hydrophilic. The hydrophobic are defined as the natural repel of water that has been caused due to droplets to form are called hydrophobic.
An experiment has been defined as process that has designed to diagnose the hypothesis which has the portion of the scientific method or procedure. Scientific experiment has done by testing the particular medicine on an animal and by observing the impact of medicine on the animal as well as the reaction of the animal. The hydrophobic are defined as the natural repel of water that has been caused due to droplets to form are called hydrophobic.
Therefore, In the image below, the correct descriptions for structures A and B is Structure A is hydrophilic, while Structure B is hydrophobic. Thus, option D is correct.
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I give you brilliant
Answers
Answer:
Adenine and Guanine
Explanation:
These two bases are included in the 4 types of nitrogenous bases. Which are the two purine bases (which are Adenine and Guanine)
a researcher has 15 pure bred wild mice which were bron and all were females. they were all mated with a male called Bob.All the offspring were brown/ these were then crossed among themselves with the the following results 293 brown and 115 white. determine the color of bob
Answers
Answer:
1. Brown.
2. Brown colour is dominant.
3. 2.5 : 1
Explanation:
The colour of Bob is brown because the offspring produced from mating are also brown. The dominant colour in these mice are brown due to presence of this brown colour in all mice. We know that dominant traits always appear in the form and structure of an organisms and we see all mice have brown colour so we can say that the dominant colour is brown. The ratio of brown to white in the 'grandchildren' are 2.5 : 1 means more mice has brown colour as compared to white.
Which two sentences describe the somatic cells in a multicellular organism
Answers
Answer:
They all have identical sets of genetic instructions
and They have a variety of specialized functions are functions of somatic cell.
Thus, In contrast to sperm and egg cells, which are referred to as germ cells, somatic cells are any other cells in the body..
Somatic cells in humans are diploid, which means they have two sets of chromosomes, one from each parent. Somatic Cell DNA mutations can have an impact on an individual, but they cannot be passed on to the individual's progeny.
All living things are composed of somatic cells, which are the basic building blocks of all organisms. Somatic cells in humans are diploid, which means they have two sets of chromosomes,one set from each parent.
Explanation:
If it helped uh please mark me a BRAINLIEST :)The correct sentences that describe somatic cells in a multicellular organism are:
C. They have a variety of specialized functions.
D. Their DNA is different from that of the original zygote.
Somatic cells are the non-reproductive cells in a multicellular organism, which means they are not involved in the production of gametes (sperm or eggs). These cells make up the majority of cells in the body and perform various specialized functions to contribute to the overall functioning of the organism.
Sentence C is accurate because somatic cells exhibit a variety of specialized functions. Throughout development, somatic cells differentiate into specific cell types, such as muscle cells, nerve cells, skin cells, and so on. Each type of somatic cell has a distinct structure and performs specific functions necessary for the organism's survival and proper functioning.
Sentence D is also correct because the DNA of somatic cells is different from that of the original zygote. During the process of development, somatic cells undergo genetic changes and modifications through mechanisms like gene expression, DNA methylation, and epigenetic modifications.
These changes result in different patterns of gene expression, leading to cellular specialization and diversification of cell types in the organism. Therefore, the correct answer options are C and D.
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The Question was Incomplete, Find the full content below :
Which two sentences describe the somatic cells in a multicellular organism?
A. They all have identical sets of genetic instructions.
B. They require the same proteins throughout their lives.
C. They have a variety of specialized functions.
D. Their DNA is different from that of the original zygote.
Which action involves mixing soil with organic materials to improve soil quality?
A.
crop rotation
B.
conservation
C.
composting
D.
terracing
Answers
C. composting
it is the process of mixing of biodegradable organic material to the soil to inc the soil fertility
Fresh milk has several parts that a farmer can separate and sell. A farmer removes the top layer of fat from fresh milk. What property does the farmer use to separate the fat from the rest of the milk?
A. density
B.Magnetism
C. Boiling Point
D. Electrical Conductivity
Answers
The fats present in the top layer of fresh milk can be separated from the rest of the milk by the help of density gradient. Thus, the correct option is A.
What is density gradient?Different molecules present in a cell or liquid can be separated on the basis of density gradient. Density gradient is the difference in the density of compounds. It is a spatial variation in density over an area in a compound or cell. It is used to describe the changes in the densities of matter. This is used widely in laboratory for the purpose of the separation of compounds such as DNA, RNA, proteins, cell organelles.
The fats present in milk does not mix well due to difference in their densities with the other parts of the milk. The fats in milk has a lower density than the other compounds present in the milk.
Therefore, the correct option is A.
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hi i am swag? dghfjyfhvfhtd
Answers
Answer:
yes brainliest
Explanation:
step by step explanation:
Northern flickers (a kind of woodpecker) live on Santa Catalina Island in California. Let's say a population of 1000 flickers lives on the island. If over a 3-year period, the birth rate remains stable at 500 flickers per 1000 individuals per year and the death rate remains stable at 300 flickers per 1000 individuals per year, what would be the size of the population at the end of 3 years, assuming no migration to or from the island
Answers
Answer:
Population in 3rd year = 1,728
Explanation:
Given:
Population = 1,000 flickers
Birth rate = 500 per 1,000
Death rate = 300 per 1,000
Number of year = 3
Computation:
Population in 1st year = 1,000 + 500 - 300
Population in 1st year = 1,200
Population in 2nd year = 1,200 + [1,200][500/1,000] - [1,200][300/1,000]
Population in 2nd year = 1,440
Population in 3rd year = 1,440 + [1,440][500/1,000] - [1,440][300/1,000]
Population in 3rd year = 1,728
How many kingdoms are there in the domain Bacteria?
OA. 3
OB.A
OC. 2
OD. 4
Answers
Answer:
c
Explanation:
The classification system for bacteria has undergone several revisions, and different sources may give slightly different answers. However, based on the most widely accepted classification system, there are 2 kingdoms in the domain Bacteria:Kingdom Eubacteria (true bacteria)Kingdom Archaebacteria (ancient bacteria or archaea)Therefore, the answer is option C, 2.
In the domain Bacteria, there are two recognized kingdoms: Eubacteria and Archaebacteria. Eubacteria includes the vast majority of known bacterial species, while Archaebacteria includes a smaller group of bacteria that are often found in extreme environments such as hot springs, salt flats, and deep-sea hydrothermal vents.So, the correct answer is C, 2.
An idividual has the following genotypes: AABbccDd.
ABcD is a possible genotype for a gamete, list 2 other possible genotypes for the gametes.
Answers
Answer:
Abcd & AbcD
Explanation:
Abcd
AbcD
Just swap out some letters
Q3: Classify the parasites that cause human disease; give an example for each one
.and Mention the name of disease, location in host, and the mode
transmission of these parasites .
Answers
Parasites that cause human disease can be classified into different groups based on their characteristics and the diseases they cause. Here are some examples:
1. Protozoa:
- Example: Plasmodium falciparum
- Disease: Malaria
- Location in Host: Plasmodium parasites reside and multiply within red blood cells.
- Mode of Transmission: Mosquitoes (Anopheles species) transmit the parasite to humans through their bites.
2. Helminths (Worms):
- Example: Ascaris lumbricoides
- Disease: Ascariasis
- Location in Host: Adult worms reside in the small intestine.
- Mode of Transmission: Ingestion of eggs present in contaminated food, water, or soil.
3. Nematodes (Roundworms):
- Example: Enterobius vermicularis
- Disease: Enterobiasis (Pinworm infection)
- Location in Host: Adult worms inhabit the large intestine, while females migrate to the perianal area to lay eggs.
- Mode of Transmission: Ingestion of infective eggs, which are usually transferred from contaminated surfaces or through direct contact with an infected person.
4. Trematodes (Flukes):
- Example: Schistosoma mansoni
- Disease: Schistosomiasis (Bilharzia)
- Location in Host: Adult worms reside in the blood vessels surrounding the intestines and liver.
- Mode of Transmission: Contact with water bodies infested with freshwater snails that release the parasite larvae, which can penetrate the skin of humans.
5. Cestodes (Tapeworms):
- Example: Taenia solium
- Disease: Taeniasis (Tapeworm infection)
- Location in Host: Adult worms reside in the human intestine, where they attach to the intestinal wall.
- Mode of Transmission: Consumption of undercooked or raw contaminated meat containing the larvae or ingestion of food or water contaminated with eggs.
It's important to note that this list provides only a few examples, and there are numerous other parasites that can cause diseases in humans. The diseases mentioned here represent a fraction of the many parasitic infections that can occur, and each parasite has its unique characteristics, geographical distribution, and mode of transmission. Proper diagnosis, treatment, and preventive measures are essential for managing these parasitic infections.
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I need help asap please help me I will give brainlist
Answers
Answer:it will wither
Explanation:
any parasite will kill living organimes
An error during S phase would be most likely to affect a multicellular
organism in what way?
A. The organism develops cells that are too small.
B. The organism develops cells that are too large.
C. The organism develops cells with DNA that contains errors.
D. The organism develops cells with too few or too many organelles.
Answers
Answer: D
Explanation: Hope this helps! excuse me if i'm wrong:)