answer :
disease-causing organisms ( pathogens )
could be in the water system.
The presence of high levels of fecal coliform bacteria in a water source indicates that the water: is contaminated with human waste.
High coliform counts in the water indicate human waste contamination.
Escherichia coli, or coliform bacteria, can be found in the intestines of humans. It is an efficient bacteria. These microorganisms enter the water when feces are released by people near water bodies.
The count of E. coli colonies per 100 milliliters of water is used to measure water contamination. Coliform microbial density is the name of the test. There should be no colonies in drinking water, 200 in bathing and swimming pool water, and 1000 in recreational (fishing and boating) water, according to the standards for water quality.
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Describe the changes in the wolf population:
a) From 1965 to 1970
b) From 1970 to 1975
Answer:
Explanation:
1965-70 there population dropped majorly and from 1970-75 the wolf population sprung back up
Answer:
AThere was a steady decrease and then a sudden increase in population.
B It increased slowly for a few years and suddenly decreased.
Explanation:
endocrine glands are called ductless gland give scientific reason
Answer:
their secretions reach the blood directly without ducts
Fossil fuel dependence has an impact on which of the following?
A)
the environment
B)
economics
C)
poverty
D)
international security
E)
all of the above
Base your answer to this question on the following information: You have isolated a primary signal factor from the blood of a space alien, which you name XFF (for X-files factor). You also have Isolated various types of alien cells which appear to Interact with XFF. Based on preliminar data, you think that XFF could be similar to one of three compounds normally found in human blood: epidermal growth factor (EGF), epinephrine, or estrogen. Which of the following would best be used to demorstrate XFF is most like EGF?
A. exposure of cells to tyrosine kinase inhibitors
B. microinjection into cells of nonhydrolyzable GTP analogues
C. exposure of cells to ryanodine
D. exposure of cells to radioactive XFF
E. receptor binding assays
Answer:
The correct answer is - A. exposure of cells to tyrosine kinase inhibitors.
Explanation:
EGF or epidermal growth factor is a protein compound found in human blood responsible for signaling is the member receptor tyrosine kinase family of proteins.
EGF signaling leads to activation or stimulation of various pathways such as Phosphatidylinositol 3-kinase, Ras and or Raf signaling, and or Akt signaling chain of reactions, or STAT pathway. By exposing the cells to the tyrosine kinase inhibitors leads to any of the given pathways then XFF is most likely similar to EGF.
Help me pls!! (I will give brainliest)
Answer: Your answer is Sexual reproduction
Explanation:
The sperm and eggs produced with sexual reproduction provide genetic diversity because their gene combinations differ from those in the parent organisms. Asexual reproduction is called asexual reproduction because the person splits into two people that have the same genes, as opposed to sexual reproduction.
Can raccoons eat Newts and salamanders?
Answer:
yes
Explanation:
Different species often have structures that are used differently but are very
similar in form. Which of the following hypotheses is supported by this
evidence?
HELP PLEASE
Answer:i think its d
Explanation:
What is a nucleotide?
O A matched pair of amino acids
O A building block of the nucleus
O A single "letter" of DNA
An entire strand of DNA
Answer:
A single letter of DNA.
Explanation:
On what structures are genes located and what is their primary function?
Explanation:
Genes are located on chromosomes, which are large pieces of DNA contained in a eukaryotic cell's nucleus.
PLEASE HELP ME!!!! I'M ALMOST OUT OF TIME!!
Answer:
Impact metamorphism-3
Dynamic metamorphism-2
contact metamorphism-1
regional metamorphism-4
Any substance that is acted upon by an enzyme is called:
A. Coenzyme
B. Vitamin
C. Substrate
D. Polypeptide
Answer:
C. Substrate
Explanation:
this should be the right answer :)
please help lol.... condon chart amino acid mRNA
Can you determine the relationship between the risk of contracting Lyme disease and the concentration of ticks that act as vectors for the disease?
Answer: Since the vector transmitting the disease is the tick, the higher the density of ticks, the higher the rate of transmission of the disease.
Explanation:
Lyme disease is an infection caused by a spirochete-like bacterium of the Borrelia species and is transmitted by a vector, which is a living being (almost always an arthropod) capable of transmitting a disease to vertebrate hosts, including humans.
In this case, the disease is transmitted to humans through the bites of deer ticks that are infected with this bacterium. The ticks live in forests or grassland areas, woodlands and swamps near rivers, lakes or seas. Infections generally occur from late spring to early fall because infected deer ticks live in regions that have extreme temperatures (very low and very high) and high levels of humidity.
The first and most obvious symptom of Lyme disease is a localized rash that begins as a pink or red circle that expands over time and may appear 3 to 30 days after the bite. Although the disease can also affect the skin, nervous system, joints, muscles and heart.
Therefore, since the vector transmitting the disease is the tick (without ticks there is no transmission), the higher the density of ticks, the higher the rate of transmission of the disease.
Plsssss help meh ASAP
Answer:
Cost
Explanation:
Answer:
The answer Is D = Cost
Explanation:
Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties. So the only one left is D. Cost :)
How are physical properties of matter observed?
Using your five senses.
Through experiments.
Only using a microscope.
Only using a telescope.
Identify the kind of response to the following argument: Argument: In nature, a species is more likely to survive when its weak members die out, so we should let the weak in our society die out. Response: In nature, a species is more likely to survive when it lives in its natural habitat, so we should live in our natural habitat. A. refutation by parallel reasoning B. refutation by reduction to absurdity C. refutation by counterexample D. not a refutation
Answer:
A. refutation by parallel reasoning
Explanation:
A refutation by parallel reasoning is an analogical inference between two arguments. This type of refutation occurs when an argument is invalidated by showing that the argument's conclusion is not supported by its premises, thereby the structure of the argument is incorrect. The parallel argument should demonstrate that the premises of the target argument are founded in a fallacy or don't provide a strong enough rationale to support/accept its conclusion.
fill in the blank
"blank are the structure and functional units common to all living organisms the cell is the basic unit of blank .organisms having only one cell are called blank organisms with more than one cell are called blank "
Suppose you are a politician representing the interest of a small community whose economic health depends on the fishing industry. How would you approach the problem of the overfishing of nearby species?
Answer:
To create more jobs in other fields.
Explanation:
As a politician, more jobs has to be created in other fields such as industries, education sector etc in order to avoid overfishing in the areas because the people related to fish industry will move to join other jobs that gives good pay as compared to fishing. If there are more jobs in other fields then more people will leave the fish industry and join jobs in other fields. In this way, we can avoid overfishing problems in the region that causes decrease in the population of fish species in water.
What do you think accounts for the higher risk of earthquakes in Los Angeles than in Chicago?
Answer:
Los Angeles, California, rests on a major (and active) fault line known as the San Andreas Fault. It's the line between the Pacific and North American tectonic plates, and more seismic activity is measured daily than on the New Madrid Fault, which runs through New Madrid, Missouri, and around the mid-west. Chicago is still at risk, of course, but not nearly as much, given the small activity of the fault line.
The San Andreas Fault, a significant (and active) fault line, runs through Los Angeles, California.
Why is a higher risk of earthquakes in Los Angeles?There is more seismic activity recorded there every day than on the New Madrid Fault, which passes through New Madrid, Missouri, and other midwestern cities.
It is the boundary between the Pacific and North American tectonic plates. Chicago is still in danger, of course, but not nearly as much as before due to the fault line's low level of activity.
Therefore, movement along the San Andreas Fault and its numerous accompanying faults, which define the tectonic border between the Pacific and North American tectonic plates, is what causes earthquakes in California.
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help!!! will give brainlyest
Answer:
I think the answer is A and Reminder to be happy, go drink some water, eat some food and relax! You are loved :) <3
Explanation:
a. If you were designing a pigment to maximize light capture in a new kind of solar array what light absorbing properties would have?
b. what molecule in the sumary equation for photosynthesis ends up in the sugars made by photosynthesis?
c. When Jasmine was a baby, her parents planted a jasmine plant weighing 1 kg in a container in their yard with 50 kg of soil. When Jasmine was 18, the plant was estimated to weigh 75 kg. Then it was time to transplant the plant into the family yard so it could continue growing. When the soil in the container was weighed, its mass was 50 kg. Over the years Jasmine's parents neither added nor removed soil from the container with the plant in it. How did the plant increase in mass by 74 kg while the soil did not change in mass and never needed adding to over the years?
Answer:
Following are the solution to the given points:
Explanation:
In point a:
When a light absorption dye was to be introduced to optimize the plant's absorbing capacity, the paint could absorb wide different wavelengths besides the observable light spectrum. It must also absorb the UV only at IR light rate to maximize the fluorescence intensity.
In point b:
Its molecule in the production of pentose sugar is the nitrogen and hydrogen atoms of carbon dioxide and water ions of air. Its water oxygen atoms are emitted through oxygen atoms during this phase.
In point c:
Its plant increased with weight while decreasing the weight of the earth, so because manufactured goods needed for plant growth are carbon dioxide from water and air, provided to a plant every day and nitrogen extracted from of the atmosphere through means of microbial materials into nitrogen. So, even if the plant raised its weight, the soil does not change the weight.
How do viruses reproduce during the lysogenic cycle?
Slow cycles release nutrients back into rapid eyeles through mechanisms, such
as
weathering
Answer:
mvghchxufududydyd6d6d6d
Explanation:
ujgjvjvkvjgchfvvh
A deer can run 22 m/s. How long would it take to run 44 meters?
Describe the temperature, moisture and air pressure associated with a Continental Polar air mass.
Use this and the picture to help
Continental Polar Air Masses
cold temperatures and little moisture
Those who live in northern portions of the United States expect cold weather during the winter months. These conditions usually result from the invasion of cold arctic air masses that originate from the snow covered regions of northern Canada. Because of the long winter nights and strong radiational cooling found in these regions, the overlying air becomes very cold and very stable. The longer this process continues, the colder the developing air mass becomes, until changing weather patterns transport the arctic air mass southward.
Answer:
Continental polar has very low temperatures, little precipitation, and air pressure varies with the pressure system moving through
The variation in the US continental region is due to the change in the weather during the day and the night.
These are the reasons for the polar air mass:-
BreezeHigh humidityThe low temperature at the nightContinental Polar air usually forms during the cold period of the year over extensive land areas.
The upper part of the region has a cold breeze while the lower part has a warm breeze.
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Two ramps of equal height are placed 1 m apart, and balls of equal mass are released from the top of each ramp. What happens to the motion of the balls when they meet in the middle?
The balls will move in a random direction.
The balls will stop.
The balls will continue moving forward.
Answer:
The ball will stop
Explanation:
I don't know much about it.
Answer:
the balls will continue moving forward
Which is used to make cell walls
Answer:

Figure 3 : Plant plasma membrane and cell-wall structure
A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein. These components are organized into three major layers: the primary cell wall, the middle lamella, and the secondary cell wall (not pictured). The cell wall surrounds the plasma membrane and provides the cell tensile strength and protection.
© 2008 Nature Publishing Group Sticklen, M. B. Plant genetic engineering for biofuel production: towards affordable cellulosic ethanol. Nature Reviews Genetics 9, 433-443 (2008). All rights reserved. 
Figure Detail
Besides the presence of chloroplasts, another major difference between plant and animal cells is the presence of a cell wall. The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall. Plant cells have high concentrations of molecules dissolved in their cytoplasm, which causes water to come into the cell under normal conditions and makes the cell's central vacuole swell and press against the cell wall. With a healthy supply of water, turgor pressure keeps a plant from wilting. In drought, a plant may wilt, but its cell walls help maintain the structural integrity of its stems, leaves, and other structures, despite a shrinking, less turgid vacuole.
Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth. Cellulose fibers are long, linear polymers of hundreds of glucose molecules. These fibers aggregate into bundles of about 40, which are called microfibrils. Microfibrils are embedded in a hydrated network of other polysaccharides. The cell wall is assembled in place. Precursor components are synthesized inside the cell and then assembled by enzymes associated with the cell membrane (Figure 3).
What Are Vacuoles?
Plant cells additionally possess large, fluid-filled vesicles called vacuoles within their cytoplasm. Vacuoles typically compose about 30 percent of a cell's volume, but they can fill as much as 90 percent of the intracellular space. Plant cells use vacuoles to adjust their size and turgor pressure. Vacuoles usually account for changes in cell size when the cytoplasmic volume stays constant.
Some vacuoles have specialized functions, and plant cells can have more than one type of vacuole. Vacuoles are related to lysosomes and share some functions with these structures; for instance, both contain degradative enzymes for breaking down macromolecules. Vacuoles can also serve as storage compartments for nutrients and metabolites. For instance, proteins are stored in the vacuoles of seeds, and rubber and opium are metabolites that are stored in plant vacuoles.
Conclusion
Plant cells have certain distinguishing features, including chloroplasts, cell walls, and intracellular vacuoles. Photosynthesis takes place in chloroplasts; cell walls allow plants to have strong, upright structures; and vacuoles help reg
Most non-vascular plants are small because they-
A. Can only transport water short distances
B. Have thick leaves
C. Usually grow in deserts
D. Are unable to perform photosynthesis
PLEASE HELP I NEED THIS ASAP!!!
Answer:
A. Can only transport water short distances
Explanation:
Nonvascular plants are very short because they cannot move nutrients and water up a stem
Hope this helps! =w=
What are the yellow arrows showing . Please no links :) ill mark brainlest if you give correct answer
Answer:i am not 100 percent sure but i think the yellow arrows are showing the wasted carbon
How are photosynthesis and cellular respiration connected as a cycle?
Answer:
Photosynthesis is when energy, carbon dioxide and water react to produce glucose and oxygen. It is an endothermic reaction (takes in more energy than it gives off).
glucose + oxygen + (energy) → carbon dioxide + water
C 6 H 12 O 6 + 6 O 2 → 6 CO 2 + 6 H 2 O
Respiration is the process of producing energy from glucose. It uses glucose and oxygen to give water, carbon dioxide and energy (thus making it exothermic).
carbon dioxide + water + energy → glucose + oxygen
6 CO 2 + 6 H 2 O → C 6 H 12 O 6 + 6 O 2
As you can see from the equations, they are essentially the reverse of each other.
Another difference is how they are used. Respiration occurs in the mitochondria of all living cells, whereas only plants photosynthesize.
In plants, they make their own glucose using the sun's energy, then respire to allow them to use the glucose for the energy they can use. The glucose can also be stored and used in many other ways other than in respiration.