Answer:
In 1884, Hans Christian Gram described a method of staining bacterial cells while not staining surrounding animal tissues. However, he thought that the staining method he developed was faulty because not all bacteria stained. ... Not all bacteria stained because some have walls that prevents the staining.
What’s the most significant greenhouse gas increase
Answer:
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.
What is cell answer it thank u good day
Why do oxygen levels drop sharply during eutrophication?
Explanation:
during eutrophication, there is a presence of excess algae in the water body. this causes an excess overconsumption of available organic materials by algae, causing the oxygen levels to reduce rapidly.
When the algae population grows rapidly, it may hinder sunlight from reaching other lifeforms and cause dissolved oxygen levels to fall.
What is eutrophication?Eutrophication is the substantial increase in phosphorus, nitrogen, and other organic material in an ageing aquatic environment such as a lake.
As the amount of organic material that can be subdivided into nutrients increases, so does the efficiency or fertility of such an ecosystem.
When the algae population grows rapidly, it may prevent sunshine from reaching other organisms and cause dissolved oxygen levels to fall.
The primary environmental impacts of eutrophication are an increase in suspended particles caused by extensive macroalgal blooms, a decrease in water clarity, and an increase in precipitation rate, which has resulted in the destruction of benthic habitat due to shading of submerged vegetation.
Thus, this way, oxygen levels drop sharply during eutrophication.
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Need help someone knows the answer
Answer:
I believe it is B
An object with a mass of 12.59 grams was immersed in water in a graduated cylinder. The volume of the water before was 56.7 mL. After the object was placed in the water, the volume read 63.0 mL. If density = mass/volume, calculate the density of the object to the correct sig figs.
Answer:
[tex]\boxed {\boxed {\sf \rho \approx 2.00 \ g /mL}}[/tex]
Explanation:
The density is the mass per unit volume. It is calculated using the following formula.
[tex]\rho = \frac{m}{v}[/tex]
The mass of the object is 12.59 grams.
The volume was found using water displacement. A known quantity of water was placed in a graduated cylinder (56.7 mL), then the object was added and the water level was recorded again (63.0 mL)The volume of the object is the difference between the initial water volume and the final water volume.
v= final water volume - initial water volume v= 63.0 mL - 56.7 mL v= 6.3 mLNow we know the mass and volume of the object and we can substitute the values into the formula.
[tex]\rho = \frac{12.59 \ g }{6.3 \ mL}[/tex]
Divide.
[tex]\rho = 1.998412698 \ g/mL[/tex]
The original measurements have 4 and 3 significant figures. We always round our answer to the least number of sig figs, which is 3. For the number we found, that is the hundredth place. The 8 in the thousandth place tells us to round the 9 up to a 0 (hundredth place), then the 9 up to a 0 (tenth place), and the 1 up to a 2 (ones place).
[tex]\rho \approx 2.00 \ g/mL[/tex]
The density of the object is approximately 2.00 grams per milliliter.
proteins have a function in
a. giving form to the cell b. providing stored energy and directing movement within a cell C. providing a scaffold for chemical reactions to take place d. catalyzing chemical reactions within a cell e. all of the above. friend thinks e but i wanna make sure
Answer:
c
Explanation:
sustitución de una es estructura que el animal ha perdido
Answer:
we'll need a translator to get what you expressing
what is meaning of H2O and compound
Explanation:
H2O is water and compound is an opposite of elements
Carbohydrates have three different types of building blocks that differ in their
complexity and size, ranging from simple sugars to complex starches. Which of
the following foods represents the most complex carbohydrates comprised of
polysaccharides?
Describe how the earth maintains greenhouse effect ?
Answer:
The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. ... The absorbed energy warms the atmosphere and the surface of the Earth.
Một các thể của một loài sinh vật khi giảm phân tạo giao tử. Trong số giao tử được sinh ra người ta nhận thấy số loại giao tử mang 2 NST có nguồn gốc từ mẹ là 6. Quá trình giảm phân diễn ra bình thường, không xảy ra trao đổi chéo.
a. Xác định bộ NST 2n của loài và tên loài.
b. Tính tỷ lệ loại giao tử nói trên?
Cho rằng tỉ lệ thụ tinh của giao tử đực và cái đều là 100%. Toàn bộ các hợp tử đều phát triển thành cá thể con.
Answer:
i cant understand
Explanation:
because your language in vietnam
In almost all criminal cases, eyewitnesses are used in order to build a case for someone’s innocence or guilt. Should eyewitness accounts be the sole evidence used to convict the accused? Explain your view.
Answer:
Explanation:
No never.
There is a famous psychology experiment where people sit in classroom in such a way that the person on either side of you can't hear what you say. This works best with more than 20 people.
The first person composes a sentence that has 3 facts in it. He whispers it to the second person who relays it to the third until the last person is told. The point of the experiment is to show that the last person isn't normally able to correctly repeat the 3 facts. In fact, most often what is given is quite mixed up and incorrect.
That's what's wrong with eye witness accounts. You can be certain of what you saw. You can also get it all mixed up.
Pls I need help with this question they didn’t say anything about it
Answer:
I don’t know
Explanation:
Plant
cell can be identified by the process of
A) Choloroplast
B) plasma membrana
c) cell wall
D)Mitochondria
A )i and ii (B) i and iii
(c) ii and iii (0) iv only
Explanation:
i think it is choloroplast
1.Explain what makes a scientific experiment reliable. Be sure to include at least three reasons to support your answer.
2.During research, why is it important to use peer reviewed evidence when collecting background information during a scientific investigation?
An experiment is reliable when its repetition produce always the same result. In science, peer review is fundamental because this process ensures that there is not misleading data that may lead to erroneous results.
In sciences, reliability is a term used to evaluate the quality of research. Reliability refers to the probability that an experiment or result is correct, thereby preventing and mitigating failures over time.
An experiment whose successive repetitions conduct the same result is 100% reliable.
Three examples of reliability in science: the same measurement of the size of the leg of a spider. the observation of the same behavior of birds populations on different days and at different times of the day. the same byproducts from a given chemical reaction when an experiment is repeated two or more times.
Peer review is the most widely accepted process used to validate scientific data. This process (peer review) is fundamental to facilitate the growth of scientific knowledge.
During peer review, independent scientists assess the originality, reliability, and significance of a scientific work before its publication.
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Answer:
i hade this assesement i aced it but this is only one part of it there is more
Explanation:
What are the physical characteristics that all specimens have in common
The physical characteristics that all specimens have in common can be presence of cells, as there is no specimen given, let's take animals. A dichotomous key can be used to find the similarity.
What is a specimen?A specimen can be anything that is displayed regarding the subject. In labs the specimens can be chemicals, animals, plants, any objects, etc.
Specimens are displayed to learn about them, to see the actual version of that animal that can not be seen easily.
Thus, Because no specimen is provided, let's take animals as an example, the presence of cells is a trait that all specimens share. To find the similarity, a dichotomous key might be utilized.
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Natural selection generally results in ________. Group of answer choices an increase in the size of a population a population that is adapted to its current environment a population that is better adapted to a future environment increased genetic variation
Answer:
Natural selection, process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution
hope it helped!
Natural selection generally results in a population that is adapted to its current environment. The correct option is B.
What is natural selection?Natural selection is the process through which population numbers of living organisms adapt and change.
Individuals in a population are naturally variable, which means they differ in some ways. This variation indicates that some people have traits that are better suited to their environment than others.
As long as there is some difference between them and that difference is heritable, there will inevitably be a selection of individuals with the most advantageous differences.
Natural selection is a process of evolution in which lifeforms that have beneficial traits procreate more effectively than those lacking the traits, leading to an increase in the frequency of the advantageous things over time.
Thus, the correct option is B.
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write at least 4 dyes used for staining?
Answer:
Staining dyes are dyes used for staining in microbiology and histology.
The ovals above represent mangrove islands of various sizes and distances from shore. According to the MacArthur/Wilson Island Biogeography Model, which island is expected to have the LOWEST number of insect species at equilibrium
There are few island on earth which are insect free due to atmosphere and sea breeze which do not complements the insects breed.
These islands attract tourists more because of no or very few insects, tourist have no fear of getting sick during their stay on these islands.
Antarctica is mosquito free continent. The island in Antarctic ocean are mosquito and have very few insects due to lack of stagnant water available for their breeding.
Iceland, Seychelles and few other island are insect free or have very low amount of insects there. The coral island is all surrounded by water and there is no connection of this island with the land.
There is very less stagnant water and ponds which can cause the insects to survive.
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According to the food pyramid what contains large amounts for the making of cell membranes
Fatty acids
Explanation:
Essential fatty acids need to be consumed through the diet and are important building blocks of cell membranes.
As carnes lombinas e animais de bom porte alimenticio e apropiados para "consumo"(no caso , que pode ser ingerido).
Which of the following is an example of uniform dispersal?
(A) one large buffalo herd
(B) random elephant groups
(C) school of silverside fish
(D) territorial jaguar pairs
Answer:
The correct answer is D. territorial jaguar pairs
Describe how urine is formed, beginning with the blood. Make it 5th grade not avanced
Urine is formed in the kidneys of a human being. The urine is passed from kidney to bladder through the ureters. The urine is stored in the bladder. On urination, it is passed from bladder to urethra followed by excretion from the body.
Step by step explanation-
Inside the kidney are present numerous cells called nephrons. Each nephron consists of a small tube called a renal tubule. When urea, ammonia and other waste materials combine, it forms urine and it passes through the nephrons and down the renal tubules of the kidney.
I have made this as short as possible for 5th standard students.
Jurassic park book summary
Answer:
En una isla remota, un grupo de hombres y mujeres emprende una carrera contra el tiempo para evitar un desastre mundial provocado por la desmedida ambición de comercializar la ingeniería genética. Pero todos los esfuerzos resultarán vanos cuando el inescrupuloso proyecto quede fuera de control y el mundo a merced de unas bestias monstruosas...
Explanation:
What is science DO NOT COPY AND PASTE!!!
Accorfing to me science is all about logic and imagination.First, imaginating and putting own views then finding reasons behind it and proving.........
Answer:
Science is the study of both living and non-living things that are present in the huge diversity in this mysterious yet unique world.
Quiz
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How many amino acids must be obtained in the diet because they cannot be made by the body?
Оооо
10
20
Answer:
10
Explanation:
The body is unable to produce essential amino acids. Because the body is unable to produce 9 amino acids, they must be received through diet. Thus, option A is the best choice.
What are Essential amino acids?An obligatory amino acid, also known as an essential amino acid, is one that the body cannot produce quickly enough to meet need and must thus be obtained from the food.
Humans and other animals cannot generate essential amino acids from metabolic intermediates. The body lacks the metabolic processes necessary to produce these amino acids, thus they must be obtained from an external diet.
The body is unable to produce essential amino acids. They must therefore originate from food. Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are the nine essential amino acids.
Therefore, option A is the best choice.
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Your question is incomplete, most probably the complete question is :
How many amino acids must be obtained in the diet because they cannot be made by the body?
91020What are true of multicellular organisms
Answer:
hope this answer help you
3. A heat insulating substance is;
Plastic, rubber, wood, and ceramics
If everyone on the planet used the same amount of resources as an average American, what percent of the Earth would
need to be used to support everyone?
A. 75%
B. 50%
C. 150%
D. 200%
Answer:
D. 200%
Explanation:
While Americans constitute the 5% of the world population, they use around the 24% of the world's energy.
Then, if the 100% of the population were like the Americans, we have:
5%*x = 100%
x = 100%/5% = 20
the whole population is 20 times the population of the US, then the total energy used is 20 times the energy used in the US.
Then the energy that the 100% of the population would use is equal to:
20*24% = 480%
So we actually would need like 5 Earths.
The option is 200%
Can a person’s genotype be determined by their phenotype? Why or why not?
Answer:
i hope it help
Explanation:
A person's genotype is not determined by their phenotype. The genotype is the genetic makeup of an individual and is the basic instructions for how the cell should make proteins that make up our traits. The phenotype is the physical appearance or characteristics of the person.
Why is the sequence of amino acids important to the properties of a protein?
It provides structural support; the structure determines the function.
It retains and transmits important biological information.
It stores energy and provides covering to avoid water loss.
It stores energy and provides structural support for cells.
Answer:
it provides structural support, the structure determines the function
Answer:
it provides structural support, the structure determines the function
Explanation:
took the test and I got it right :) happy learning everyone
