Answers
The appropriate magnification for a manual RBC cell count using a hemocytometer is to use a microscope and focus on the grid lines of the hemocytometer with a 10X objective.
Through the use of a hand tally counter, you can count the live, unstained cells in one set of 16 squares. While counting, employ a system whereby cells are only counted when they are set within a square or on the right-hand or bottom boundary line. If the same guidelines are followed, then the dead cells stained with Trypan Blue might also be counted for a viability estimate when required.
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Related Questions
HELP PLEASE. What phase is missing from the data table above? What is a possible reason
that the students chose NOT to consider that phase in their experiment? [2pt]
Answers
The phase of mitosis that is missing from the data table given is prometaphase.
A possible reason that the students chose NOT to consider that phase in their experiment could be that it is not easily distinguishable like the other phases.
What does the term "prometaphase" mean?
The second stage of mitosis, known as prometaphase, occurs when a parent cell's nucleus divides into two identical daughter cells using genetic material that has been copied.
The nuclear envelope, which serves as the nucleus' physical shield, is destroyed during prometaphase.
Additionally, the transition between prophase and prometaphase can be gradual and difficult to distinguish, as the nuclear envelope begins to break down and the spindle fibers start to interact with the chromosomes.
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What happens to all the weight of the food we eat? Where do the atoms in the food molecules go?
Answers
Answer:
The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change.
Explanation:
The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change.
What are the functions of small intestine?Three sections make up the small intestine: the jejunum, ileum, and duodenum. It aids in the continued digestion of stomach-derived food. It takes in water as well as vitamins, minerals, carbohydrates, fats, and proteins.
The digestion of food, absorption of body-needed nutrients, and elimination of waste are the primary functions of the small intestine.
The organ of the gastrointestinal tract known as the small intestine or small bowel is responsible for the majority of the absorption of nutrients from food. It receives bile and pancreatic juice and is located between the stomach and large intestine.
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Milk
Lactose Free Milk
Milk + enzyme
What is the % Glucose
Concentration
Answers
Answer:
100gram
Hope it helps
Have a good day
Select the correct answer.
What term refers to communities that remain unchanged for long observable periods of time?
A.
successive communities
B.
stable communities
C.
climax communities
D.
secondary communities
Answers
Answer:
C.
climax communities
example forest where animals & plants have adapted to living with each other
Explanation:
urn shaped = low birth rate = declining population
example japan great health care for old people & many women working instead of being moms
why do you add chilled methylated spirits to the filtrate
Answers
Answer:
The detergent breaks apart the cellular membranes and the salt binds to the DNA to make it less able to remain soluble in water (it neutralizes the charge of the DNA and it is less able to bind to water).
Explanation:
hope this helps
Can anyone help on this please?!?
Answer asap!
Answers
- lower density
- less volume displaced
- only foil displaces water
Box: -sinks
-higher density
-foil and air displace water
- more volume displaced
For both of them:
-mass.
(Yw..)
explain how the bark of a tree is found how does it act as protective tissue
Answers
evidence that two organisms share a common ancestor?
Answers
There are several lines of evidence that can indicate two organisms share a common ancestor:
Comparative Anatomy: If two organisms have similar structures, it suggests a common ancestral origin. Homologous structures, such as the pentadactyl limb (five-fingered limb) found in mammals, reptiles, birds, and amphibians, indicate a shared ancestry despite variations in function or form.Comparative Embryology: Studying the development of embryos can reveal similarities between organisms that indicate a common ancestor. For example, vertebrate embryos exhibit similar features at early stages, such as pharyngeal pouches, suggesting a shared ancestry.Fossil Record: Fossils provide direct evidence of organisms that lived in the past and can show evolutionary connections between species. Transitional fossils, like Archaeopteryx, which exhibits characteristics of both reptiles and birds, demonstrate a gradual transition between different groups of organisms.Molecular Biology: DNA and protein sequence comparisons can reveal the degree of similarity between organisms. The more closely related two organisms are, the more similar their genetic sequences tend to be. Molecular phylogenetics uses this information to construct evolutionary trees and determine common ancestry.Biogeography: The geographic distribution of organisms can provide evidence of common ancestry. For example, species on isolated islands often resemble closely related species on the nearest mainland, indicating a common ancestral source population.Genetic Homologies: Shared genetic information between organisms, such as the presence of specific genes or genetic markers, can indicate a common ancestry.Vestigial Structures: Vestigial structures are remnants of organs or traits that were functional in ancestors but have lost their original purpose in descendants. Examples include the human appendix or hind limbs in some snake species. The presence of these vestigial structures suggests a shared ancestor with organisms in which these structures are still functional.By examining and analyzing these various types of evidence, scientists can build a compelling case for the shared ancestry between different organisms, highlighting the evolutionary relationships that connect them.
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Which organism is likely to carry out the process shown in the diagram?
CO, + H,O
Heat
www
Chloroplast
Mitochondrion
MASS
Respiration
OA. Barn owl
OB. Mushroom
C. Alligator
-0₂
Sugar
ATP
Answers
Answer:
C
Explanation:
took the test
Which base does Cytosine pair with?
A. Adenine
B. Guanine
C. Uracil
D. Thymine
Answers
Cytosine, a nitrogenous base found in DNA and RNA, pairs with guanine. The correct answer is option B.
This pairing is based on the complementary base pairing rule in which cytosine forms three hydrogen bonds with guanine. The other base pairs in DNA are adenine with thymine, and in RNA, adenine pairs with uracil. The complementary base pairing is crucial for DNA replication and transcription processes. Cytosine and guanine, along with adenine and thymine/uracil, form the base pairs that make up the rungs of the DNA double helix structure.Understanding base pairing is fundamental to understanding the structure and function of nucleic acids. Therefore, the correct answer is option B.For more questions on DNA
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Cytosine pairs with Guanine.
Explanation:The base Cytosine pairs with the base Guanine in DNA. This base pairing is a key component of the double-stranded DNA structure.
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Living in the northern hemisphere, you decide to plant tulip bulbs in the spring. You are disappointed in the summer when they do not bloom. You had forgotten that tulip bulbs need a period of vernalization in order for them to bloom. What change should you make?
a) Plant the tulip bulbs in soil that has an abundance of nutrients, especially phosphorus.
b) Make sure that the tulips are kept in shady areas as too much sun will not allow them to sprout
c) Be careful to give the tulips plenty of water while they are germinating, but reduce the amount as the plants grow.
d) Ensure the plants are established in a region that will receive long periods of dark as this is required for the tulips to bloom.
e) Plant the tulip bulbs in the fall as opposed to the spring.
Answers
Answer:
b) Make sure that the tulips are kept in shady areas as too much sun will not allow them to sprout
Name the body system and organs muscular disorders affects.
Answers
1. Skeletal muscles: These are the muscles that attach to bones and enable movement of the body. Muscular disorders affecting skeletal muscles can lead to weakness, stiffness, cramps, and pain.
2. Smooth muscles: These are the muscles that line the walls of organs and blood vessels. Muscular disorders affecting smooth muscles can lead to problems with digestion, urination, and blood pressure regulation.
3. Cardiac muscle: This is the specialized muscle that makes up the heart. Muscular disorders affecting the cardiac muscle can lead to heart failure, arrhythmias, and other cardiovascular problems.
Examples of muscular disorders include muscular dystrophy, myasthenia gravis, fibromyalgia, and multiple sclerosis.
A sole proprietorship is distinguished by the fact that it has (1 point)
O limited liability
O higher tax burden.
O only one owner.
o multiple owners.
Answers
Answer: only one owner
Explanation: I just did the quick check!
A sole proprietorship is distinguished by the fact that it has only one owner.
What is Sole proprietorship?
This type of business is usually owned and run by one individual and there is no legal distinction between the business and the individual.
This type of business is common among traders who typically run businesses on their own and it therefore makes the option C the most appropriate choice.
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Complete the following chart with the speed, wavelength, or frequency of sound waves in different mediums.
Answers
Answer:
Explanation:
100m
500m
2500m
What is not true about parasite-host relationships? A. Both can be animals B. One can be a plant and the other an animal C. Both can be plants D. One must be an animals and the other one a plant
Answers
Answer:
one can be a plant and the other an animal
Some experts attribute the increase in ADHD diagnoses to an increased awareness of the disorder, while others attribute the increase to ______ diagnoses.
Answers
Answer:
incorrect
Explanation:
Attention-deficit/hyperactivity disorder (ADHD) is one of the most common neurodevelopmental disorders affecting children. ADHD is characterized by different behaviors that include one or more of the following symptoms: inattention (poor concentration), impulsivity (interrupting behavior) and hyperactivity (state abnormally active). It has been reported that DHD diagnoses in children between 4 and 17 years of age dramatically increased from 6 percent (6%) during the period 1997-1998 to 10 percent (10%) during the period 2015-2016. Although the causes of this increase have not been established, the American Psychiatric Association (APA) indicates that the increase might be due to the increased access of communities historically relegated to receive care and decreased stigma to be diagnosed with ADHD. Other possible causes range from chemical factors to unhealthy habits during pregnancy (e.g., smoking, substance abuse, poor nutrition). On the other hand, it has also been proposed that this increase may be as a result that ADHD is often misdiagnosed and confused with other conditions (e.g., bipolar disorder, autism, kids being kids, etc).
Neurons are able to keep the inside negatively charged and the outside positively charged because:there are more sodium ions outside than inside the neuronthe membrane of the neuron is nearly impermeable to sodium ions.the sodium-potassium pump uses ATP to pump sodium ions out of the neuron.All of these choices are correct.
Answers
The neuron is capable of maintaining its inside negatively charged because of the joint action of all the factors mentioned above, which also helps to change this state to allow the nervous impulse.
Therefore, all the choices are correct.
which type of inhibitor will achieve saturation point at alower substrate concentration? With a reason
Answers
The molecule in question is classified as an enzyme inhibitor because it interferes an enzymatic reaction. There are two types of inhibitors; competitive and noncompetitive inhibitors. Competitive inhibitors bind to the active site of the enzyme and control substrate from binding.
What do competitive and noncompetitive inhibitors do?
The competitive inhibitor binds to the occupied site and prevents the substrate from binding there.
The noncompetitive inhibitor binds to a separate site on the enzyme; it doesn't block substrate binding, but it causes other differences in the enzyme so that it can no extended catalyze the reaction efficiently.
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92ml 3.0 fl oz what is the ratio
Answers
The ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.
To find the ratio between 92 mL and 3.0 fl oz, we need to convert the units to a common measurement. Let's convert 3.0 fl oz to milliliters (mL).
1 fluid ounce (fl oz) is equal to approximately 29.5735 milliliters (mL).
Therefore, 3.0 fl oz is equal to 3.0 * 29.5735 = 88.72 mL (rounded to two decimal places).
Now we can express the ratio between 92 mL and 88.72 mL:
92 mL : 88.72 mL
Simplifying the ratio by dividing both sides by the greatest common divisor, we get:
46 : 44
So, the ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.
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Forested floodplain wetlands benefit from periodic flooding from rivers. When floodwaters spill into the wetland, they bring water and nutrients and leave both behind. But humans have often cut off floodplains from rivers by building roads, levees, berms, etc. Think about what would happen if a river could no longer flood into these areas. How would the resulting increased amount of water and nutrients in the river affect soils, hydrology, and life downstream?
Answers
The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.
If a river can no longer flood into forested floodplain wetlands due to human interventions, it would have significant consequences for the downstream areas in terms of soils, hydrology, and life.Without periodic flooding, the increased amount of water and nutrients in the river would not be able to disperse and be deposited in the floodplain wetlands. As a result, downstream soils would experience a decrease in nutrient inputs, leading to decreased fertility and altered composition. The absence of regular flooding would disrupt the natural hydrological cycle, reducing the recharge of groundwater and altering the flow patterns in the river system. This could result in decreased water availability, increased erosion, and changes in the overall ecosystem dynamics downstream.The disruption of nutrient flows and hydrological patterns would also have a significant impact on the life forms downstream. Aquatic plants, fish, and other organisms that depend on floodplain wetlands for breeding, feeding, and shelter would face habitat loss and reduced food availability. This, in turn, could disrupt the food chain and impact the abundance and diversity of aquatic and terrestrial species in the downstream areas.The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.For more such questions on flooding
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What do you call an organism that eats both plants and animals
Answers
Answer:
A omnivore
Explanation:
PLZ help quick I really really really really really really need help
Answers
:)
A "healthy ecosystem" can also be described as:
Answers
Answer:
water and rocks; energy source, break down dead plants and animals, returning vital nutrients to the soil.
Explanation:
Circulatory System
Label the following parts:
Heart
Vein
Artery
Capillary
10
Answers
The circulatory system, also known as the cardiovascular system.
What is the circulatory system?The heart is a muscular organ located in the chest. It acts as a pump, continuously contracting and relaxing to circulate blood throughout the body. The heart has four chambers: two atria (left and right) and two ventricles (left and right).
Veins transport deoxygenated blood back to the heart from the body tissues. Arteries carry oxygenated blood away from the heart to various organs and tissues. Capillaries the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues.
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Assume you were given competent cells of known transformation efficiency (TE). Assume TE= 1x10[6] (note 10[6] means 10 to the power of 6). You want to have about 1000 colonies on the P-200 plate. How many nanograms of plasmid should you use in the transformation reaction?
Answers
Therefore, approximately 0.001 ng of plasmid DNA should be used in the transformation reaction to obtain approximately 1000 colonies on a P-200 plate with a known transformation efficiency of \(1*10^6\).
How to determine the amount of plasmid DNA?To determine the amount of plasmid DNA required for the transformation reaction, we need to calculate the amount of DNA that will result in approximately 1000 colonies on a P-200 plate using the known transformation efficiency of \(1*10^6\).
Assuming the transformation efficiency is defined as the number of colony-forming units (CFUs) per microgram (μg) of DNA, we can use the following equation to calculate the amount of DNA required:
(Number of colonies desired / Transformation efficiency) x 1 μg/1,000,000 ng = Amount of DNA required in ng
Plugging in the given values, we get:
(1000 colonies / \(1*10^6\) CFU/μg) x 1 μg/1,000,000 ng = 0.001 ng
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Which step is part of the engineering design process but is not part of a
scientific investigation?
Answers
The step which is a part of the engineering design process but is not part of a scientific investigation is to imagine
What is scientific investigation?Scientific investigation simply refers to those steps and procedures used to in unraveling the science behind a particular naturally observed phenomena.
So therefore, the step which is a part of the engineering design process but is not part of a scientific investigation is to imagine
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Grace is a pregnant woman in an area of Africa that is experienced many years of drought civil unrest and poverty Grace is underweight and has been unable to eat enough nutrients during her pregnancy based on your knowledge of Grace and her living condition which of the following situations is most likely to occur
Answers
The most likely situation to occur would be: Grace may be at an increased risk of complications during pregnancy and childbirth.
What is the pregnancy?Given that Grace is thin and has happened unable to eat enough vitamins during her gestation, her overall strength and happiness may be negotiated.
Malnutrition can bring about a range of adverse belongings on two together the mom and the cultivating fetus.The lack of approach to an enough and equalized diet, combined accompanying the disputing living environments in an area overwhelmed by dryness, civic unrest, and want, can increase the possibility of complexities during pregnancy.
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choose all that are principal veins of the portal system carrying blood from the gastrointestinal organs to the liver.
Answers
Gastric veins, splenic veins, inferior/superior mesenteric veins, and hepatic portal veins are the principal veins of the portal system carrying blood from the gastrointestinal organs to the liver. Thus, all options are correct.
What is the portal system?Capillary blood is transported to the liver by the portal venous system from the esophagus, stomach, small and large intestine, pancreas, gallbladder, and spleen.
Thus, gastric veins, splenic veins, inferior/superior mesenteric veins, and hepatic portal veins are the principal veins of the portal system. Hence, all options are correct.
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Your question is incomplete, most probably the full question is this:
Choose all that are principal veins of the portal system carrying blood from the gastrointestinal organs to the liver.
A. Gastric veins
B. Splenic vein
C. Inferior/superior mesenteric veins
D. Hepatic portal vein
Thad rolls his bowling ball down the lane with a
force of 63 Newtons. If his ball has a mass of 7 kg,
what is the resulting acceleration of the ball?
35.
Answers
The acceleration of the ball is, 9m/s.
How, explain your answer briefly?Given data:
The mass of the bowling ball is, m = 7 kg.
The magnitude of force offered by ball is, F = 63 N.
The above problem is based on the Newton's second law of motion. According to the Newton's Second law of motion, the applied force is equal to the product of mass and acceleration of the body.
So,
F = ma
Solving as,
a = F/m
a = 63/7
Thus, we can conclude that the acceleration of the ball is, 9m/s.
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El Ninos tend to result in cooler,wetter conditions across Texas.Which is likely to occur in Texas during El Ninos
Answers
El niño causes a drop in temperatures and increases in rainfall across Texas.
What is El niño?The unusual warming up of the surface of the water in the eastern tropical region of the Pacific ocean is termed El niño. El niño is a phase of the phenomenon called the El niño Southern Oscillation (ENSO).
El niño is the warmer phase of this phenomenon. The cool phase of the ENSO phenomenon is called the La niña. It results in the cooling of the regions of the water's surface.
El niño impacts the currents of the oceans starting from Australia to Southern America. It is an irregular event and can happen once from two to seven years.
Therefore, in texas, it results in a drop in temperatures and increases in rainfall.
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