Answer:
tonicity
Explanation:
this i the ability of a solution to change the shape (tone) of a cell by altering it's internal water volume
which insect is recognized by nod like receptors?
Answer:
It is used for detecting bacteria
If a man with type AB blood conceives a child with a woman with type O blood, what are their chances of producing a type A baby?
Answer:
A or B
Explanation:
What difference would it make if the southern sea otter (Core Case Study) became extinct primarily because of human activities?
Are humans a dead end host for streptococcus pneumonia? If yes please explain why. Thank you!
Answer:
No, because Pneumonia can be transferred from one person to another.
Explanation:
Because humans are the only natural host for S. pneumoniae, our data suggest that the CbpA-mediated recruitment of complement FH may contribute to host tropism of this pathogen. A person can spread the germs that cause pneumonia when he or she coughs and expels the bacterial or viral infections that caused the disease. The droplets containing the virus or bacteria can land on a common surface, such as a table, telephone, or computer. Anyone can get pneumococcal disease, it occurs more frequently in infants, young children, the elderly or in people with serious medical conditions such as chronic lung, heart or kidney disease. Others at risk include alcoholics, diabetics, people with weakened immune systems and those without a spleen.
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Which two formulas contain 4 atoms of oxygen
Answer:
Methane CH4 1 carbon atom : 4 hydrogen atoms
Sulfuric acid H2SO4 2 hydrogen atoms : 1 sulfur atom: 4 oxygen atoms
Which of the following is true about the sugar molecules in plants
1. The sugar molecules are made by plants and animals for energy
2. The sugar molecules are the result of a chemical reaction called photosynthesis
3. The sugar molecules are used by the cells as energy
4. The sugar molecules are made from molecules of water and carbon dioxide during cellular respiration
Answer:
2
Explanation:
Plants make sugar from the sun, water, and carbon dioxide in the air. a chemicls reaction happens causing photosynthesis
a human organ is being prepared for transplant. in what type of solution must it be bathed?
A. A hypertonic solution
B. A hypotonic solution
C. Pure water containing solutes
D. A solution with the same osmolarity as the organ tissue
it must be bathed in a solution with the same osmolarity as the organ tissue.. inorder for it not to gain or lose its solute concentration.
I it is placed in a hypotonic solution it will gain water and eventually burst and if placed in a hypertonic solution it will lose water and shrink.
it must be bathed in solution with the same osmolarity as the organ tissue.
Osmosis allows for the diffusion of water from the region of higher concentration to the region of lower concentration.
Osmolarity measures the amount of solute concentration
For an organ place in a hypertonic solution i.e solution that has a higher solute
organ bathed in a hypertonic solution will continue to absorb in more water which can eventually burst the organ when it is too muchFor organ in hypotonic solution i.e solution that has a lower solute concentration
organ bathed will have to lose more solution because itself has more solute than the solution and can lead to shrinkagebut when the osmolarity is the same the Organ will have the same solute concentration as the solution and will help keep the organ in its original form, it will not absorb or lose any solution.
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If you make mutations in the nuclear localization signal of a nuclear protein, what will happen to the protein
Answer:
What would happen if the operator sequence of the trp operon contained a mutation that prevented the repressor protein from binding to the operator? a. In the absence of tryptophan, the genes trpA-E will not be transcribed. b. In the absence of tryptophan, only genes trpE and trpD will be transcribed. c. In the presence of tryptophan, the genes trpA-E will be transcribed. d. In the presence of tryptophan, the trpE gene will not be transcribed.
Explanation:
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In animal cells, cytokinesis is accomplished by using cell plate.
true
false
Answer:
true
i hope its help
carry on learning
In animal cells, cytokinesis is accomplished by using cell plate.
TRUE
False
Answer:
True
Which of the following best describes the carbon cycle as a whole?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
the flow of carbon through the trophic levels of an ecosystem
(Choice B)
B
the flow of carbon between inorganic and organic sources in the environment
(Choice C)
C
the flow of carbon from rocks on land to oceans during weathering
The flow of carbon between inorganic and organic sources in the environment is best description of the carbon cycle as a whole. Thus, option B is correct.
What is carbon cycle ?It is the process in which carbon compounds are interchanged among the biosphere.
For example the elemental form of carbon such as diamond and graphite in a combined state are mostly found as carbonates and as carbon dioxide gas.
It act as a blanket over our earth, by balancing the energy and also absorb sun's long wave length radiation.
It also involve in plant photosynthesis, bioaccumulation of carbon occur in animal body by consuming plant material, after the death of the animal it can decomposed and carbon is released back into the atmosphere.
The carbon which is not released back will form fossil fuels.
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El acero es homogénea,heterogénea,elemento,compuesto?
Answer:
El acero es una mezcla homogénea, sin embargo, está hecho de hierro y carbono. Una sustancia pura es diferente de una mezcla homogénea porque una sustancia pura tiene un solo componente.
What is extinction?
What are the causes of the extinction of animals?
How the extinction of animals It can be fixed?
Answer:
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. ... A typical species becomes extinct within 10 million years of its first appearance, although some species, called living fossils, survive with little to no morphological change for hundreds of millions of years.
Explanation:
# CAUSES OF ANIMAL EXTINCTION
Demographic and genetic phenomena.
Destruction of wild habitats.
Introduction of invasive species.
Climate change.
Hunting and illegal trafficking.
# Basic causes of extinction are as follows
2. Excessive hunting and killing of wild animals.
3. Poaching for purpose of meat, skin, fur, ivory, and rhino horns etc.
4. Capture and export of new species in large number.
5. Introduction of exotic species.
6. Excessive use of pesticides, fungicides, and other toxic chemicals.
7. Conversion of fertile land in the desert by overgrazing of domestic animals.
8. Deforestation leading to loss of covers or shelter to wild animals.
9. Excessive use of plant wood for timber, charcoal or fire purpose.
A hummingbird may need to consume up to 50% of its body weight in sugar each day, just to meet its energy needs. Some of this energy is stored and some is used for metabolic activities, but much of the energy is
A)
converted into amino acids needed for the production of starch
B)
released as heat energy back into the hummingbird's environment
C)
changed into radiant energy, which can be used by plants for photosynthesis
D)
used to synthesize inorganic compounds necessary for cellular respiration
Answer:
A
Explanation:
If you were to hike up Mount Kilimanjaro in Tanzania, you would pass through several habitats, including savanna at the base, forest on the slopes, and alpine tundra near the top. Explain how such diverse habitats can be found at one location near the equator.
Given our knowledge of ecosystems, we can confirm that the diverse habitats found at one location near the equator are due to the changes in elevation.
The effects that elevation has on the climate are what enable the diversity of habitats on a single mountain. As elevation increases, atmospheric pressure decreases. This decrease in pressure then causes a decrease in temperature.
The base of the mountain is a dry and hot habitat, while as we travel upwards towards higher elevation we see a transition in habitats into a more tropical forest style and then eventually an alpine tundra, further proving the claim that elevation lowers the temperature.
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An operation that wants to serve clams that are displayed in a tank until prep must?
Operation that wants to serve clams that are displayed in a tank until prep
must obtain a variance from the regulatory authority.
A variance is usually gotten from the regulatory authority when the use of
property by the owners contradicts some laws. The variance is used as a
waiver for some of the laws within that jurisdiction.
This is why operation that wants to serve clams that are displayed in a tank
until prep must obtain the variance from the regulatory authority to ascertain if there is any potential hazard before granting it.
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Petroleum and natural gas
form from
Answer:
formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. Heat and pressure over millions of years turn it into natural gas.
The potential difference across a piece of wire is 2.1V
The current in the wire is 0.30A
Calculate the resistance of the wire
Write any equation that you use
Answer:
Given: V=2.1 I = 0.30 A
Using V=IR
2.1 = 0.30 R
2.1/0.30 =R
R= 7 Ohm
How does the mass of an object hitting you affect the force you feel on the hit? Provide evidence from your life.
Answer:
Momentum is a concept or law that says if you ad speed or mass or both to a given object, the force you receive will be greater. so if a basball, say is coming at you you could easily catch it. But if a bowling ball was coming at you the same speed it would probably nock your head off.
Explanation:
Here is your equation for momentum
P=v*m
where P is momentum, V is velocity and M is mass.
if a plant cell and animal cell were placed in a dilute salt solution and than transferred to distilled water what will happen to the cells
higher water concentration outside the cell to a lower water concentration inside the cell
Explanation:
water will defuse from a higher water concentration outside the cell to a lower water concentration inside the cell. Red blood cells are placed in a solution with a lower water Concentration compared to content 1.7% salt solution will lose water by the osmosis and shrink
explain why calcuim and phosphorus from bone are important to the human body
Answer:
the mineral calcium helps your muscles, nerves, and cells work normally. Your body also needs calcium (as well as phosphorus) to make healthy bones. Bones are the main storage site of calcium in the body
1. Alpha-gamma coactivation
A. is critical for preventing contraction of an antagonist muscle when the other muscle is contracting during voluntary
movement
B. is critical for maintaining the appropriate tension on the spindle organ during contraction of extrafusal fibers.
C. is the process by which Ca2+ is released from the sarcolemma when nicotinic acetylcholine receptors are activated
at the neuromuscular junction
none of the above
The correct option is B.
Alpha gamma coactivation is critical for maintaining the appropriate tension on the spindle organ during contraction of extrafusal fiber.
Alpha‐gamma coactivation is a process that the muscle use to keep or maintains it's length. It works in a way that when the muscle contracts or relaxes , the sensory neuron send the information to the central nervous system about what happen to the muscle. This lead the intrafusal and extrafusal fibers to contract.
Alpha-gamma coactivation enhance the muscle spindles ensure its sensitivity to stretch the muscle lengths.
Therefore, Alpha gamma coactivation is critical for maintaining the appropriate tension on the spindle organ during contraction of extrafusal fiber.
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Name two nutrients that plants need.
Answer:
Sunlight and water.
Explanation:
The sun is the plant's most important nutrient. Plants convert sunlight into sugars in order to grow. Water is needed in two ways, it serves as both a solvent for mineral salts that are carried inside plant cells, and it is an essential component of photosynthesis. The questioner might have asked "name one" so they don't have enough information to answer with any greater certainty - but the answer remains the same regardless of how many nutrients they ask about.
Minerals are also required by plants in order to function properly including calcium, potassium, iron, magnesium just to name a few minerals which are found in healthy nutritious produce!
Answer:
sunlight and water
Explanation:
is the two nutrition that plant need
5. Why do you think it's important to look at the impact on the ecosystem as a whole, instead of just the individual"?
Answer:
Ecosystem Services are the benefits nature provides to human well-being. The term is frequently thrown around in academic circles, but why should you care about them?
Although the term is quite new, our connection to nature is not. We depend on nature for our survival - without healthy ecosystems, our drinking water isn’t clean nor is the air we breathe. We also enjoy nature... studies show that people who spend time in nature tend to be happier than those that don’t. It can even act as a natural anti-depressant. With industry and urban sprawl expanding at unprecedented rates, Ecosystem Services attempt to translate the benefits we receive from nature into economic terms so we can better understand the trade-offs we are making between nature and industrial development.
This brings us to the reasons why we feel Ecosystem Services are important to each and every person:
1. Boundless Benefits
Understanding nature in economic terms, while not perfect, allows us to put everything into the same comparison unit. Despite nature being such an integral part of the human existence, it is sometimes an afterthought in today’s economy. Nature and money are often on competing terms, so to make a more level playing field, environmental economists have tried to bridge this gap by placing a monetary value on the benefits nature provides.
A recent study estimated the combined benefits of nature to people at well over $100 USD trillion per year. To put this in perspective, the top 50 most profitable companies globally combine to make just under $10 USD trillion per year.
Valuing nature in a way that can speak to decision makers, may help promote conservation efforts in the future. It brings nature back into the cost-benefit discussion in a way that can be easily understood.
2. The Foundation For Sustainable Development
Ecosystem Services help measure the true cost of industrial development. Often, the impact industrial development has on the economy and job creation overshadows the cost it will have on surrounding lakes, forests, keystone species, and so on. Assigning a dollar value to these lakes and forests, and the Ecosystem Services they provide, helps adjust the cost benefit analysis by evaluating the negative effects development will have on the natural environment.
Companies have also started to use Ecosystem Services in conservation offset planning, where they can buy and sell credits to offset a development or set aside land to meet a specific offset. Sustainable development supports the maintenance of a healthy economy while also protecting the ecological process for future generations.
3. Essential For Our Survival
Whether you live in rural Newfoundland or downtown Los Angeles, your dependence on Ecosystem Services is the same. As a society, we depend on healthy ecosystems to do many things; to purify the air so we can breathe properly, sequester carbon for climate regulation, cycle nutrients so we have access to clean drinking water without costly infrastructure, and pollinate our crops so we don’t go hungry. As the world’s population continues to grow, so too does our dependence on healthy ecosystems to provide the necessities essential to our survival.
Don’t we all want to leave the planet in a good condition for our successors? Ecosystem Services valuation and assessment is one way to help make this happen. By clearly understanding their value, we can make the best and most informed decisions about how to manage our landscape to ensure this value isn’t lost.
Explanation:
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Answer:
probably 2.....
..
.
........
What were Mendel's 4 ideas explaining the inheritance pattern he observed? Which one of them is considered the Law of Segregation?
Answer:
1) Principles of Paired Factors
2) Principle of Dominance
3) Law of Segregation or Law of Purity of Gametes (Mendel's First Law of Inheritance)
4) Law of Independent Assortment (Mendel's Second Law of Inheritance).
Explanation:
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How does the cardiovascular system/ respiratory system/ nervous system/ digestive system work together?
Your respiratory system takes in oxygen from the air. It also gets rid of carbon dioxide. Your digestive system absorbs water and nutrients from the food you eat. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body.
(1) Inhales (breathes in) Oxygen - good for the body - gives it to the Circulatory System to be transported throughout the body through the blood.
(1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go.
Answer:
Explanation:
Hope its help you. I wrote kinda more information thou
The human body contains trillions of cells, 78 different organs and more than 60,000 miles of blood vessels if you stretched them end-to-end. Incredibly, all of these cells, vessels and organs work together to keep you alive.
Each organ belongs to one of ten human body systems. These body systems are interconnected and dependent upon one another to function. Your heart does not beat unless your brain and nervous system tell it to do so. Your skeletal system relies on the nutrients it gains from your digestive system to build strong, healthy bones.
There are 10 body systems:
Circulatory
Respiratory
Nervous
Muscular
Skeletal
Digestive
Endocrine (hormones)
Lymphatic, or immune system
Reproductive
Integumentary (skin, hair)
A body system is a group of parts that work together to serve a common purpose. Your cardiovascular system works to circulate your blood while your respiratory system introduces oxygen into your body.
The human body contains trillions of cells, sels if you stretched them end-to-end. Incredibly, all of these cells, vessels and organs work together to keep you alive.
Each organ belongs to one of ten human body systems. These body systems are interconnected and dependent upon one another to function. Your heart does not beat unless your brain and nervous system tell it to do so. Your skeletal system relies on the nutrients it gains from your digestive system to build strong, healthy bones.
Stylized human body anatomy chart: skeletal, muscular, circulatory, nervous and digestive systems. Flat cartoon style.
There are 10 body systems:
Circulatory
Respiratory
Nervous
Muscular
Skeletal
Digestive
Endocrine (hormones)
Lymphatic, or immune system
Reproductive
Integumentary (skin, hair)
A body system is a group of parts that work together to serve a common purpose. Your cardiovascular system works to circulate your blood while your respiratory system introduces oxygen into your body.
Each Body System Works with the Others
Each individual body system works in conjunction with other body systems. The circulatory system is a good example of how body systems interact with each other. Your heart pumps blood through a complex network of blood vessels. When your blood circulates through your digestive system, for example, it picks up nutrients your body absorbed from your last meal. Your blood also carries oxygen inhaled by the lungs. Your circulatory system delivers oxygen and nutrients to the other cells of your body then picks up any waste products created by these cells, including carbon dioxide, and delivers these waste products to the kidneys and lungs for disposal. Meanwhile, the circulatory system carries hormones from the endocrine system, and the immune system’s white blood cells that fight off infection.
Each of your body systems relies on the others to work well. Your respiratory system relies on your circulatory system to deliver the oxygen it gathers, while the muscles of your heart cannot function without the oxygen they receive from your lungs. The bones of your skull and spine protect your brain and spinal cord, but your brain regulates the position of your bones by controlling your muscles. The circulatory system provides your brain with a constant supply of oxygen-rich blood while your brain regulates your heart rate and blood pressure.
Even seemingly unrelated body systems are connected. Your skeletal system relies on your urinary system to remove waste produced by bone cells; in return, the bones of your skeleton create structure that protects your bladder and other urinary system organs. Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells.
Working together, these systems maintain internal stability and balance, otherwise known as homeostasis. Disease in one body system can disrupt homeostasis and cause trouble in other body systems. If you become ill with the AIDS virus that affects your immune system, for example, you may develop pneumonia in your respiratory system, a yeast infection in your reproductive system, Candida that affects your esophagus in your digestive system or the skin cancer known as Kaposi’s sarcoma.
describe the features of the endocrine system for control in the example given.
- endocrine gland
-negative feedback mechanism
-produce hormone -> travel via blood-> target specific cells organs
Please expand these bullet points
Answer:
The endocrine system is a major system in the body composed of glands that secrete hormones, which are substances produced by the body to stimulate an organ or group of cells. The endocrine system controls essential bodily functions, which include movement, sexual development, sensory perception, and even growth.
Explanation:
Hormones are chemicals that are produced by the glands in the endocrine system and coordinate distinct bodily functions by carrying important messages throughout the body. They send signals to receiver cells in organs, muscles, and tissues.
Role of Hormones
Hormones have very essential roles in the body, as they regulate metabolism, growth, and sex development. For example, testosterone and estrogen are sex hormones that are released in the body to initiate sex development during puberty. The rate at which these hormones are produced and released must also be highly controlled for optimal development and growth. Hormones also control levels of hunger or exhaustion. Overall, they are very important in telling the body what to do and how to do it.
Function of Hormones
As previously mentioned, hormones serve several important functions throughout the body. They are responsible for the function of organs, in addition to controlling how the body stores and uses energy. Hormones only target specific organs or cells: for example, thyroid-stimulating hormones are released by the pituitary gland, and only target the thyroid gland. Some hormones can affect several kinds of tissues at once; for instance, the thyroid hormone, produced by the thyroid gland, can affect several bodily functions, such as heart rate and metabolism.
Hi , what is example of light source
Answer: sun
light bulbs
me lol just kidDing
Answer:
Sun , fire , light bulbs , electricity in storms, stars , fireflies
Drag each item to indicate whether it exhibits fracture or cleavage.
Answer:
From left to right
Explanation:
Cleavage, cleavage, fracture
The first item exhibit a cleavage. The second item exhibit a cleavage. The third item exhibit a fracture.
In mineral science, Cleavage is the process by which a mineral breaks or splits through smooth planes with a pattern because the material is stratified in a layered pattern. It generally seems regular since it fractures along its plane of weakness.
A fracture happens when a mineral splits with fractures and does not produce a particular definite shape. It frequently emerges in an erratic and irregular pattern.
From the three picture given, the first and the second item exhibit cleavage, and the third item exhibit fracture.
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The undigested part of the food is called
Diet
Nutrients
Roughage
Starch
Answer:
Roughage!
Explanation:
Which substance is transported by haemoglobin?
A. Nitrogen
B. Oxygen
C. Urea
D. Water
Answer:
B. Oxygen
Explanation:
Oxygen is a substance transported with the assistance of red blood cells
Answer:
B. Oxygen
Explanation:
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