Which statement about water quality is true?
o A. water with pH level range of 6.5-8.5 best supports aquatic life
OB. warm water contains more dissolved oxygen than cool water
o c. high turbidity lowers the temperature of water in streams
OD. fast flowing streams have low levels of dissolved oxygen
Answers
Answer:
I believe it would be D
Explanation:
Why is temperature, pH, and dissolved oxygen
important to water quality?
Temperature – Temperature affects aquatic organisms in a variety of
ways. The body temperature of most aquatic organisms is the same as
the surrounding water and fluctuates with the water temperature.
Most aquatic organisms are adapted to live in a narrow temperature
range and they die when the temperature becomes too low or too
high. Temperature affects their metabolism, reproduction and
emergence. Temperature also affects the rate of photosynthesis of
aquatic plants, the base of the aquatic food web. Pollutants can
become more toxic at higher temperatures. The amount of dissolved
oxygen becomes lower as the water becomes warmer. Temperature is
measured in degrees Fahrenheit or Celsius (Centigrade).
pH – pH is the measure of hydrogen ions, or acidity, in the water.
Water has hydrogen ions and hydroxyl ions. When there are equal
numbers of both, the water is neutral. As the hydrogen ions increase,
the water becomes more acidic; as the hydroxyl ions increase, the
water becomes more basic. pH is measured on a logarithmic scale of
0 – 14: 7 is neutral; below 7 is acidic; above 7 is basic. Most aquatic
organisms have a narrow pH tolerance range of 6.5 – 8.5. Acidic
waters can cause toxic heavy metals to be released into the water.
Acid rain and mining operations can lower the pH of water bodies.
Dissolved Oxygen – Most aquatic organisms need oxygen to survive.
Dissolved oxygen is the oxygen present in water available to aquatic
organisms. It is not the oxygen that is part of the water molecule but
rather oxygen gas. Oxygen enters the water from the air through rain,
turbulence and wind, and through the photosynthesis of aquatic
plants. Organisms absorb the oxygen through structures such as gills
or their skin. Waters with higher dissolved oxygen have ecosystems
that are generally more diverse and stable. Decomposition of organic
material is a major cause of low dissolved oxygen resulting in fewer
species. Dissolved oxygen is measured in parts per million (ppm) or
milligrams per liter (mg/L).
Related Questions
Identify the steps of the lysogenict
Answers
Answer:
cycle:
1. Attachment: A bacteriophage attaches to the surface of a bacterial cell.
2. Entry: The viral DNA is injected into the bacterium and integrates into the host chromosome.
3. Prophage: The integrated viral DNA is known as a prophage and is replicated along with the bacterial chromosome.
4. Replication: The prophage replicates along with the bacterial DNA during cell division.
5. Induction: A trigger, such as stress or UV radiation, causes the prophage to leave the bacterial chromosome and enter the lytic cycle.
6. Lytic cycle: The viral DNA begins replicating and producing new phages, which lyse the host cell and release new viruses.
7. Release: The newly produced phages are released into the environment to find other bacterial cells to infect.
Note: The lysogenic cycle can sometimes be followed by the lytic cycle, in which the virus uses the host cell to produce new viruses, ultimately leading to lysis of the host cell.
You will be researching a virus that infects humans, animals, or plants. If you are into history you may pull a virus that has occurred (like one of the flu pandemics) To share your research you will be creating a digital poster. You may use any type of poster program you like as long as it can be shared! You may also use google slides. I will provide a template for google slides (link will be here) if you need help getting started! To get full credit, your poster must include the following: At least 8 of these 10 items Name of virus Time span (is it currently out there infecting things? Is this from the past?) What it infects How does it spread? What are the symptoms? How dangerous is it? At least one relevant image (with a citation if you did not create the image) A description/caption for the image explaining the relevance How does it reproduce? (lytic or lysogenic) What are its viral relatives? Did it evolve from another known virus? AND A list of references all while using academic grammar and spelling! Post a link to your poster or upload your poster here in the Discussion Board. This discussion board will not be much of a discussion - it will be more of a sharing of work!
Answers
Answer:
yes
Explanation:
The blood testis barrier is to newly formed sperm cells as the blood thymus barrier is to ________.
A) plasma cells
B) white pulp
C) T lymphocyte precursorsr
D) mast cells
Answers
The blood-testis barrier and blood-thymus barrier are two examples of specialized blood-tissue barriers in the body. These barriers are important for protecting developing cells from harmful substances circulating in the blood.
The blood-thymus barrier is to T lymphocyte precursors. The thymus is an important organ of the immune system that plays a crucial role in the development and maturation of T lymphocytes. The blood-thymus barrier is formed by a layer of epithelial cells surrounding the thymus. This barrier prevents the entry of harmful substances such as toxins, pathogens, and foreign proteins from the bloodstream into the thymus. This is important because T lymphocytes are particularly sensitive to these substances and can be easily damaged. The barrier also helps to maintain a specialized microenvironment within the thymus that is necessary for the maturation of T lymphocytes.
Overall, both the blood-testis barrier and blood-thymus barrier play important roles in protecting developing cells from harmful substances and maintaining a specialized microenvironment necessary for their development and maturation.
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how does the addition of sodium dodecylsulfate (sds) to proteins affect the basis of separation of the proteins via electrophoresis? (select all that apply.) sds binds to proteins via non-specific adsorption, giving a charge proportional to the protein mass. sds allows proteins to migrate based on their native tertiary structure. sds binding gives proteins a net negative charge. sds treatment yields proteins with roughly the same shape, which is a random coil. sds alters the protein's primary structure into a random form. none of the above.
Answers
Sodium dodecylsulfate (SDS) to proteins affects the basis of separation of the proteins via electrophoresis including binding of SDS gives proteins a net negative charge, SDS treatment yields proteins with roughly the same shape, which is a random coil and SDS alters the protein's primary structure into a random form.
The addition of sodium dodecylsulfate (SDS) to proteins affects the basis of separation of the proteins via electrophoresis by:SDS binding gives proteins a net negative charge.SDS treatment yields proteins with roughly the same shape, which is a random coil.SDS alters the protein's primary structure into a random form.Therefore, the correct options are (c), (d), and (e).Sodium dodecyl sulfate (SDS) is a detergent used in the laboratory to denature proteins and provide a uniform negative charge to them. SDS works by binding to hydrophobic amino acid residues in the protein's primary structure, resulting in its unfolding into a random coil form. As a result, proteins lose their structure, but SDS provides a consistent negative charge to the denatured protein, allowing for electrophoretic separation based on molecular weight.Learn more about electrophoresis: https://brainly.com/question/6885687
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how can less stomata on the leaves affect the rate of transpiration
Answers
Answer:
because stomata helps in transpiration.
one kind of evidence that supports wegeners hypothosis is that
Answers
Answer: One kind of evidence that supports Wegener's hypothesis is that: fossils of the same organism have been found on different continents Based on this finding, we can draw a conclusion that million years ago, all the lands on the face of the earth were not separated by sea so the animals could migrate from one continent to
Photosynthesis reactants
Answers
Answer:
The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.
which statement accurately describes type 2 diabetes? a. type 2 diabetes accounts for 65-75 percent of all diabetes cases. b. early on in the disease, the pancreas stops secreting insulin. c. the primary defect is insulin resistance. d. the adipose cells remove too much glucose from the blood.
Answers
The following describes type 2 diabetes :
Type 2 diabetes accounts for 65-75 percent of all diabetes cases.The primary defect is insulin resistance.What is diabetes?Diabetes is a chronic medical condition that influences how the body converts food into energy. Our bodies metabolizes most of the food we eat into sugar and release it into the bloodstream. When blood sugar increases, it signals the pancreas to release insulin. Type 1 diabetes occurs when the body's defense system, the immune system, attacks and destroys the insulin-producing beta cells in the pancreas. Scientists believe type 1 diabetes is caused by environmental factors such as genes and viruses.Although there is no cure yet, our scientists are working on groundbreaking weight management research to help people go into remission from type 2 diabetes to get back into range. This does not mean that diabetes is gone forever.To learn more about diabetes from the given link :
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(Decreases, increases)
(Under the surface, in the atmosphere)
(Decreases, increases)
(Under the surface, in the atmosphere)
Answers
When humans burn the fossil then it increases the amount of carbon that is stored under the surface and increases the amount of carbon flowing in the atmosphere, This is totally like burning of fuels and combustion.
What is combustion ?It is defined as the process which involves the burning of carbon sources and it is of two types that is complete and incomplete.
When the fossil fuels such as petroleum, natural gases and fuel with the coal as well is burned out in atmosphere then in this condition it obviously increases the amount of carbon out in nature and decreases the carbon availability down the Earth.
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Actively pumping fresh air through the tracheal system is known as.
Answers
a rounded articular projection supported on a constricted portion (neck) of a bone is called a a) foramen b) condyle c) tuberosity d) head e) trochanter
Answers
A rounded articular projection supported on a constricted portion (neck) of a bone is called a head (option d). In skeletal anatomy, a head refers to the rounded, ball-like end of a bone that fits into a socket to form a joint, allowing for movement and articulation. This type of joint is commonly found in the hip and shoulder regions. The head of a bone is typically supported by a narrower part called the neck, which connects it to the shaft of the bone.
In contrast, the other terms mentioned refer to different features of bones:
a) Foramen: A small hole or opening in a bone that allows the passage of nerves or blood vessels.
b) Condyle: A rounded projection found at the end of a bone that articulates with another bone.
c) Tuberosity: A raised, rough area on a bone where muscles or ligaments attach.
e) Trochanter: A large, protruding bony prominence found on the femur (thigh bone), where several muscles attach.
Remember, a head (option d) is the correct answer for a rounded articular projection supported by a constricted portion (neck) of a bone.
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if you wished to observe chiasmata forming during meiosis, what stage of meiosis would have the best cells to use?
Answers
The chiasmata formation occurs during the diplotene stage of the Prophase 1.
Chiasmata are the points where the non sister chromatids attach attaches to the homologous chromosomes. It leads to exchange of segments and creates variation. The chiasma is a structure that forms between a pair of homologous chromosomes by crossover recombination and physically links the homologous chromosomes during meiosis. The chiasmata become visible during the diplotene stage of prophase I of meiosis, but the actual "crossing-overs" of genetic material are thought to occur during the previous pachytene stage.
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Which is used to view the internal structures
of cells?
Answers
The electron microscope is used to view the internal structures of cells.
What is electron microscopy?Electron microscope is any of several forms of microscope that use a beam of electrons, rather than one of light, and has a much greater resolving power.
The electron microscope makes use of electrons to view the structures of the cell and because of its high resolution, the electron microscope can view the internal structures of cells.
Electron microscopy is a technique that can be used to examine not just whole cells, but also the subcellular structures and compartments within them.
Therefore, the electron microscope is used to view the internal structures of cells.
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Name of the element whose chemical symbol is Mg?
a
microgram
b
malorganite
c
magnesium
d
manganese
Answers
Answer: Magnesium is the correct answer
The diagram shows the structure of an ATP molecule with its bonds labeled. Which bond is responsible most often for the production of energy during cellular respiration?
Answers
Answer: the answer is D. 4
Explanation: i got it right
3. What factors (race, class, gender, "the times") do you think were responsible for Henrietta's
cells being taken from her without her permission? What factors do you think were responsible
for her family being kept in the dark about the many ways in which the study of her cells were
contributing to medical science?
Answers
Factors such as race, class, and gender contributed to Henrietta's cells being taken from her without her permission.
What are Henrietta cells?Henrietta cells or HeLa cells are immortalized cancer cell lines obtained from Henrietta Lacks, an African-American woman.
An immortalized cell line reproduces indefinitely under specific conditions.
The factors that contributed to Henrietta's
Henrietta'scells being taken from her without her permission include;
race - being a black, she had been granted no rights at the time class - being of the poor class, she did not have many rightsgender- women were not empowered thenthe times then were not a time of social freedom.Her family was kept in the dark too as those involved felt she had no rights to those cells as well to prevent them from getting any benefits.
Therefore, race, class, and gender contributed to Henrietta's cells being taken from her without her permission.
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From the nutrition facts label, determine how many calories are in one serving of this breakfast sandwich. O 170 mg O 130 calories 290 calories 820 mg
Answers
Answer:
1410!
Explanation:
Answer:
1410
Explanation:
if you add everything together you get the answer
There is a(n) _____ vaccine (which is available for all genders at the UHC), painless sores can pass the bacterial infection ____ through skin-to-skin contact; and _____is a common STI that is passed through fluid and which can infect the genitals, eyes, throat, and rectum.
Answers
There is a vaccine called the HPV Human Papillomavirus vaccine, which is available for all genders at the UHC, painless sores can pass the bacterial infection syphilis through skin-to-skin contact and Gonorrhea is a common STI that is passed through fluid and can infect the genitals, eyes, throat, and rectum.
What is syphilis?The bacterium Treponema pallidum is the source of the STI known as syphilis. Including vaginal, and oral sex, sexual contact is the main method of transmission. It can, however, also be passed from mother to kid when she is pregnant or giving birth.
If untreated, syphilis advances through multiple phases. Chancres, which are painless sores or ulcers, first form on or near the genitalia, anus, or mouth during this period. These sores are very contagious and spread the infection very rapidly.
Syphilis can advance to the secondary stage, which is characterized by a number of symptoms like rash, fever, sore throat, muscle aches, and swollen lymph nodes, if it is left untreated. These symptoms could fluctuate over the course of weeks or months.
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Following the path of urine, summarize every structure
in order and briefly explain what is happening there.
Answers
The path of urine involves several structures in the urinary system. Here is a summary of each structure in order, along with a brief explanation of what happens at each stage:
1. Kidneys: The kidneys are responsible for filtering waste products, excess water, and toxins from the blood to form urine. They regulate water balance and electrolyte levels in the body.
2. Ureters: The ureters are muscular tubes that transport urine from the kidneys to the urinary bladder. Peristaltic contractions help propel urine forward.
3. Urinary Bladder: The urinary bladder is a muscular sac that stores urine until it is ready to be expelled. It expands as it fills and contracts during urination to release urine.
4. Urethra: The urethra is a tube that carries urine from the bladder to the external environment. In males, the urethra also serves as a passage for semen during ejaculation.
During this process, the kidneys filter waste and excess substances from the blood, forming urine. The ureters transport urine from the kidneys to the urinary bladder, which stores it until the urge to urinate arises.
When urination occurs, the bladder contracts, and urine is expelled through the urethra. The entire process helps eliminate waste and maintain fluid and electrolyte balance in the body.
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The first fuel Paul’s body uses is ________________________ from Paul’s last meal, which are stored in his _____________ & his ______________ (technically the bits in his BLOOD are used up before that even). The body turns them into ____________, which is burned in ____________. That fuel lasts Paul about ________________.
Answers
1. The first fuel Paul’s body uses is carbohydrate, which is generated from Paul’s last meal.
2. These carbohydrates are stored in his liver and muscles (technically, the bits in his blood are used up before that even).
3. The body turns the carbohydrates into glucose, which is burned in mitochondria during an aerobic cellular respiration.
4. That fuel lasts Paul about 3 miles, 40 minutes (\(\frac{2}{3} \;hours\)).
A fuel can be defined as the resources that power the body of a living organism such as a human being. Also, the three (3) main types of fuel that power the human body include the following:
OxygenWaterFoodFat is a nutritional element of food and it is beneficial to the body of a living organism because after the body exhausts its carbohydrates, it then uses its own fat as a fuel to power the body.
In this context, the first fuel Paul’s body uses is carbohydrate, which is generated from Paul’s last meal. These carbohydrates are stored in his liver and muscles (technically, the bits of carbohydrates in his blood are used up before the storage).
Furthermore, the body turns the carbohydrates into glucose, which is burned in mitochondria during an aerobic cellular respiration. Also, the fuel would only last Paul for a distance of about 3 miles, 40 minutes (\(\frac{2}{3} \;hours\)).
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How are eggs made? OOF.
Answers
Answer:
what do you mean how are they born or how are they cooked?
Explanation:
Answer:
they just come when the chicken is old enough
Explanation:
The chicken has to be about 18 weeks old and the type of egg depends on what they eat. They eat just about anything:)
What is a cactus' environmental pressures?
Answers
Explanation:
high temperature and low rainfall this leads to the need for adaptation to conserve water and tolerate extreme heat one of the main environmental pressures for cacti is water
Explain the ff.
Demographic factor affecting the business environment
Economic factor affecting the business environment
Sociocultural factor affecting the business environment
Legal and Political factor affecting the business environment
Technological factor affecting the business environment
Answers
Answer:
I don't know what the answer ais
short-term solution to sex ed
Answers
Answer:
I'm not sure what you mean.
Explanation:
Answer: go to the sex ed class or invite a girl (or guy) over and find out
Explanation:
-
1) What types of specialized cells (cells with a specific purpose such as
cardiac or nerve cells) do you think the daphnia have? What are their
functions? List at least 2 types of cells and their function.
on systems (s
Answers
Answer:
alle and the daphina cell
whitchbof the following is a function of nucleic acids
Answers
Answer:
To store and transmit genetic information.
They give instructions for proteins.
Explanation:
Which of the following statements is/are true regarding adaptations of the human upper limbs for bipedalism? Check All That Apply 1.They are shorter than the lower limbs 2.Good hand mobility allows for manipulating objects 3.They are adapted for locomotion 4.The shoulder joint hos less mobility than the hip joint
Answers
The true statements regarding adaptations of the human upper limbs for bipedalism are:
1. They are shorter than the lower limbs.
2. Good hand mobility allows for manipulating objects.
1. They are shorter than the lower limbs - This statement is true. One of the adaptations of the human upper limbs for bipedalism is that they are shorter than the lower limbs. This is because the lower limbs support the body weight and need to be longer to provide stability and balance, whereas the upper limbs are used for manipulation and do not require as much length.
2. Good hand mobility allows for manipulating objects - This statement is also true. One of the advantages of bipedalism is that it frees up the hands for manipulating objects. The human upper limbs are adapted for grasping, manipulating, and carrying objects, which is made possible by good hand mobility.
3. They are adapted for locomotion - This statement is somewhat ambiguous and could be interpreted in different ways. If by "they" we mean the upper limbs, then this statement is partly true. While the primary function of the upper limbs is not locomotion, they are still involved in the act of walking and provide balance and counterbalance during movement. However, if by "they" we mean the human body as a whole, then this statement is true. Bipedalism is a form of locomotion, and the human body is adapted for this mode of movement.
4. The shoulder joint has less mobility than the hip joint - This statement is false. The shoulder joint is actually one of the most mobile joints in the human body and allows for a wide range of movements, including flexion, extension, abduction, adduction, and rotation. In contrast, the hip joint is a ball-and-socket joint that provides stability and support but has less range of motion than the shoulder joint.
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a cell is placed in an environment that results in the cell having an increased internal pressure. what membrane model could explain this observation? (1 point)
Answers
A cell is placed in an environment that results in the cell having an increased internal pressure. The membrane model could explain this observation is that water passes through and enters the membrane into the cell because the cell's internal salt concentration is greater than that of the environment.
The cell is the smallest unit of living things and has three main parts, namely the cell membrane, cell nucleus and cytoplasm. The cell membrane is the outermost layer consisting of phospholipids and proteins. The cell membrane is semipermeable or selectively permeable, which means it can regulate the entry and exit of substances into the cell.
Endocytosis is the process of entering substances into cells, one of the events of endocytosis is pinocytosis. Pinositois occurs when the cell's internal salt concentration is greater than that of the environment, so water will enter the cell. The cell membrane will form indentations, then the indentations form bubbles and the substance is transferred into the cell.
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Write a paragraph that explains what might happen to a bacterium when environmental
conditions become too dry for survival.
Answers
i need help plzzzzzzzzzzzzzz
Answers
Answer:
Nucules
Explanation: