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Select the correct answer.
Which of the blood reagent tests result in a blue-green color when it touches blood?
OA Phenolphthalein
O B. Luminol
OC. Fluoresceln
OD HemaStix
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Answer:
The correct answer is - D. Hemastix
Explanation:
HemaStix is a blood reagent test to test the blood present in a sample with the help of strips of tetramethylbenzidine and hydrogen peroxide. It is a presumptive color test. A presumptive color test that detects blood.
In this test, the plastic pad of TMB and hydrogen peroxide gets a sample from a wet swab, initially, it gives yellow color but if there is blood and it touches with blood it will turn green or blue-green. It does not require to destroy the DNA of the blood cells.
When there is no pattern to a
population's growth, it is known as
A. irregular
B. stable
C. irruptive
D. cyclical
When there is no pattern to a population's growth, it is known as stable. The correct option is B.
What is population growth?The rise in the number of people on Earth is referred to as population growth. The majority of human history saw a relatively steady population size. Energy, food, water, and medical care, however, became more accessible and dependable as a result of innovation and industrialisation.
The predicted population expansion is due in part to factors like an increase in young, unmarried mothers, high fertility rates for specific ethnic groups, and a lack of access to contraception and sexual education.
When age-specific fertility and mortality rates are constant over a long period of time, there is a stable population growth.
Contrarily, an irregular population increase is one in which there is no structure and the population size behaves chaotically.
Thus, the correct option is B.
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_________ is a mitochondrial disorder.
Answer:
cell malfunction
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1. Explain the contributions of Nicholaus Steno to geology.
Why is it important for the aorta be to be as wide as it is?
Answer: It distributes oxygenated blood to the different tissues, it has to be wide enough to fit everything through as efficiently as it can.
essentially its like a tunnel and tunnels have to be wide to fit everything through
Answer:
Aorta is a major vessel that distributes oxygenated blood to the different tissues in the circulatory system. It is also the largest known blood vessel in humans
Explanation:
I think it’s tree am I right?
Answer:
mm yes tre.........
Explanation:
Galaxies that are moving away from earth are?
Answer:
The galaxies are moving away from Earth because the fabric of space itself is expanding. While galaxies themselves are on the move — the Andromeda Galaxy and the Milky Way, for example, are on a collision course — there is an overall phenomenon of redshift happening as the universe gets bigger.
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2. Which statement does not accurately describe natural selection?
A. Individual organisms change their genes to adapt to their environment.
B. The genetic composition of a population changes from one generation to the next.
C. More advantageous traits become more common in populations.
D. Beneficial and useful traits are inheritable.
Answer:
It is individual organisms change their genes to adapt to their environment.
correct answer is A
⦁ Arrange these statements in the right order to describe process of inhalation.
____ Air is drawn into the lungs
____ Air pressure in the chest cavity decreases
____ Lungs expand
____ The diaphragm contracts and flattens
____ The muscles between the ribs contract to move the ribs up and out
Answer:
air is drawn into the lungs
lungs expand
the muscles between the ribs contract to move the ribs up and down
air pressure in the chest cavity decreases
the diaphragm contracts and flattens
Inhalation has been part of respiration. It includes drawing air into the lungs that expand the lung cavity by pulling the ribs leading to contracting the diaphragm followed by a decrease in lung pressure. Thus the correct order is 1, 3, 5, 4, and 2.
What is inhalation?Inhalation is the respiratory process to inhale oxygen inside the respiratory system for the cellular and respiratory processes. At first, the air is drawn into the lungs followed by expansion of the lungs.
This causes the ribs muscles to move up and down to accumulate the volume. This movement causes the diaphragm to flatten and contract which allows the oxygen to take place in the lungs that decreasing the air pressure in the cavity.
Therefore, the air is drawn inside the lungs in inhalation.
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What colour does bicarbonate indicator change to in presence of oxygen and carbondioxide
Answer:yellow
Explanation:
Hydrogen bicarbonate is an indicator that is use to test the amount of carbondioxide and oxygen in the aquatic body. It's main color is red.
It normally turn to yellow when there is more carbondioxide present in the atmosphere of the water body. It turn yellow when respiration is much because carbondioxide is exhaled out.
bro like can someone actually help please
Oh, it's easy. Basically, this is all you need to know:
C matches with G, and A matches with T.
So wherever you see a C, write "G."
Wherever you see a G, write "C."
Wherever you see an A, write "T."
Wherever you see a T, write "A."
B
Name the part of the the brain labeled "C".
A)
frontal lobe
B)
temporal lobe
C
parietal lobe
D)
medulla oblongata
Answer:
B- Temporal lobe
Explanation:
The temporal lobe is one of the four significant flaps of the cerebral cortex. It is the lower flap of the cortex, sitting near ear level inside the skull. The fleeting flap is generally liable for making and protecting both cognizant and long haul memory.
brainliest?
Is the following sentence true or false? During meiosis, the two alleles for each gene stay together.
Answer:
False
Explanation:
During meiosis, a cell goes from a diploid stage to a haploid stage. So no, the alleles do not stay together.
The Meiosisi is basically a process by which the number of chromosomes is reduced by half to form a sex cell.
1. All animals except sponges have , groups of cells that work together to perform a specific function. 2. All animals eat other organisms in order to gain building materials for the body. This makes them , since they obtain necessary energy and chemical building blocks from the environment. 3. One key adaptation of animals was the evolution of a(n) , a fluid-filled gap between the outer wall of the body and the outer wall of the digestive system. 4. All animals are , organisms with cells that are relatively large, complex, and contain membrane-enclosed organelles such as the nucleus. 5. Cnidarians are the only animal phylum to display , meaning that their bodies can be divided any way through the center point to yield two even halves.All other adult animals display , meaning that their bodies can only be sliced lengthwise through the midline to produce two even halves.
Answer:
1. Tissues
2. Heterotrophic
3. Body cavity
4. Eukaryotes
5. Radial symmetry; bilateral symmetry.
Explanation:
1. All animals except sponges have tissues, groups of cells that work together to perform a specific function.
Sponges are sea animals which are found attached to surfaces. They are multicellular and heterotrophic like other animals, but they lack true tissues and organs.
2. All animals eat other organisms in order to gain building materials for the body. This makes them heterotrophic, since they obtain necessary energy and chemical building blocks from the environment.
Heterotrophs are organisms that cannot manufacture their own food, but obtain it from their environment instead.
3. One key adaptation of animals was the evolution of a body cavity, a fluid-filled gap between the outer wall of the body and the outer wall of the digestive system.
A body cavity is a space found inside the body that is filled with fluid and which holds and protects internal organs. There are several cavities found in the human body and they are separated by membranes as well as many other structures.
4. All animals are eukaryotes, organisms with cells that are relatively large, complex, and contain membrane-enclosed organelles such as the nucleus.
5. Cnidarians are the only animal phylum to display radial symmetry, meaning that their bodies can be divided any way through the center point to yield two even halves.All other adult animals display bilateral symmetry, meaning that their bodies can only be sliced lengthwise through the midline to produce two even halves.
Infer why base substitutions in the third position are least likely to cause a change in the amino acid for which it coded.
Answer:
Because of the codon oscillation.
Explanation:
The formation of codons is susceptible to the occurrence of oscillation, which is the term that corresponds to the fact that many codons have synonyms in the third position, that is, in the third letter. For example, the codon CUA, which represents leucine, will also represent leucine if it is presented in CUU, CUC and CUG forms, due to the oscillation in the third position. This allows the tRNA to recognize any of these codons and pair with the anticodon smoothly and without errors.
what is the function of the periwinkle leaf?
Answer:
periwinkle is used for “brain health” (increasing blood circulation in the brain, supporting brain metabolism, increasing mental productivity of leef
Are humans an example of a placental mammal? Justify
Answer: Humans, of course, are also placental mammals
Explanation: Placental mammals include such diverse forms. They are also some of the most familiar organisms to us, including pets such as dogs and cats, as well as many farm and work animals, such as sheep, cattle, and horses. Sense they are most familiar to us human beings are also placental mammals.
(b) Identify the dependent variable in the experiments. Identify a control group missing from the second experiment. Justify the need for this control group in the second experiment.
Hello. You have not submitted the experiments to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
A dependent variable is one that is influenced by an element, in order to present a result, that is, it is a variable that does not establish itself, being dependent on another variable to establish itself. An example of a dependent variable can be seen in an experiment that seeks to determine the differences in growth rates of bean plants that were fertilized with different organic fertilizers. As you can see, this is an experiment where the different organic fertilizers influence differences in the growth rate of bean plants. Thus, the growth of these plants depends on the fertilizer, this growth being the variable dependent on the experiment.
A control group, in turn, is an element of the experiment that does not receive the element that is being tested in the same experiment. The control group is important, because it allows the researcher to see the results of a system where the tested element does not exist, thus being able to determine the real differences that the tested element is capable of causing. Using the same example presented in the paragraph above, we can see that the different organic fertilizers are the elements tested in the experiment. These fertilizers will be applied to the plants, however it is important that at least one of these plants does not receive any fertilizer, so that the difference between a system with fertilizer and a system without fertilizer can be evaluated. This plant that received no fertilizer is the control group.
how most of our excretory system is not dedicated to excreting; it’s dedicated to reabsorbing.
Answer:
Not all animals use the same routes or excrete their wastes the same way humans do. Excretion applies to metabolic waste products that cross a plasma membrane.
The excretory system works with the respiratory, endocrine, urinary and digestive system. It works with the respiratory system because it helps the lungs get rid of carbon dioxide and water vapors. It works with the digestive system to help get rid of wastes that you eat through the anus.
what is the function of the seed producing in mosses plants?
Explanation:
Ecologically, mosses break down exposed substrata, releasing nutrients for the use of more complex plants that succeed them. They also aid in soil erosion control by providing surface cover and absorbing water, and they are important in the nutrient and water economy of some vegetation types.
What are the spikes on my potatoes? I have had them on my counter for a min and it looks like they are turning into mutants
What do the circles represent
Answer:
nothingkekwowkwo
Explanation:
nothingsjejskskwko
describa la evolución de los seres humanos a partir de los primates iniciales. incluye en su análisis características como la visión binocular, las manos que sostenían los objetos, la locomoción bípeda, la vida social, la fabricación de herramientas y el aumento del tamaño del cerebro
What is the volume of a square pyramid with a base edge of 14 m and a slant height of 25 m
Answer:
length of base(l) = 14m
slant height (s)=25m
we know,
slant height(s)=√(l/2)^2 + h^2
or, 25= √(14/2)^2+ h^2
or, 25 = √49+h^2
or, 25^2 = 49+h^2
or, 625 = 49 + h^2
or, 625-49=h^2
or, √576 =h
h=24
Therefore vertical height (h)= 24m
Again,
Volume of square pyramid (v) = 1/3 L^2h
or, v =( 1/3) 14^2×24
or, v= 4704 / 3
Therefore, V= 1568 cubic meter.
Please help <3 Will give brainliest
Answer:
blood group
Explanation:
If you cross an AAbb individual with an aabb individual, what will the genotype ratio be in the next generation? What will be the phenotype ratio?
Answer:
Genotype of offspring = Aabb
Genotype ratio will be 100 % as all the offspring will have the same genotype
Phenotypic ratio = 100% all the offspring will have the same phenotype
Explanation:
Genotype of First parent - AAbb
Genotype of Second Parent - aabb
Gamete of first parent - Ab, Ab, Ab, Ab
Gamete of second parent - ab, ab, ab, ab
All the offspring will have genotype Aabb
Phenotypic ratio = 100% all the offspring will have the same phenotype
Mitochondrial DNA is passed directly from father to child
true or false
Which statement describes only biotic factors in a forest ecosystem?
Answer:
A bird and a squirrel are living in a tree.
Explanation:
Competition for food is an example of a biotic factor in an ecosystem. A red squirrel and a grey squirrel living in the same habitat will compete for the same food source. 2. Predator-prey relationships are examples of biotic factors.
Can you please help me
Answer: the last one
Explanation: yuh
Answer:
i think the last one would be the right answer
which is not an example of capillary actions ?
A. a paper towel absorbing a spill .
B. plant absorbing CO2 through Stomata .
C. a mop absorbing water from a puddle from the ground.
Help Asap!
Answer:
B
Explanation:
capillary actions are related with water movement. co2 is a gas absorbed.