Answer:
34
Explanation:
You are a virologist interested in studying the evolution of viral genomes. You are studying two newly isolated viral strains and have sequenced their genomes. You find that the genome of strain 1 contains 25% A, 55% G, 20% C, and 10% T. You report that you have isolated a virus with a single-stranded DNA genome. Based on what evidence can you make this conclusion
Answer:
See the answer below
Explanation:
In double-stranded DNA, the ratio of purine bases (Adenine and Guanine) and that of pyrimidine bases (Thymine and Cytosine) is 1:1 according to Chargaff's rule. This means that the percentage of Adenine must be equal to that of Guanine while that of Thymine must also be equal to Cytosine.
However, in the case of the newly isolated viral strain, the amount of Adenine (25%) and Guanine (55%) vary while that of Thymine (10%) and Cytosine (20%) also vary. This is in contrast to Chargaff's rule. Hence, the isolated virus is a single-stranded DNA virus instead of a double-stranded.
-Give an example of a scientific law.
-Give an example of a theory in science.
Please help :)
Answer:
An example of a scientific law is Newton's first law.
Explanation:
It says that every object will remain at rest or in uniform motion in a straight line unless forced to change direction by the action of an external force.
An example of a theory in science is the Big Bang theory. It is something that someone came up with that is a rational explanation to explain why or how something happened or came into place.
How could you model this process in a different way? Explain how you’d design this model so that the entire process is clear to the reader.
Answer:
Edmentum and Plato sample answer
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An illustrated diagram would be helpful in understanding the transmission. The diagram would show an adult, with the major parts of the nervous system highlighted. The nerve pathways involved in stimuli processing and response would be highlighted in different colors to show autonomic and somatic and parasympathetic and sympathetic parts of the nervous system.
Which theory of plate movement relies on the weight of the subducting crust?
A. Slab-push
B. Slab-pull
C. Mantle convection
D. Hot plumes
Answer:
The answer is slab-pullExplanation:
Got it right on the quiz :))
Why is water important for digestion
Water is essential for good health. Water and other liquids help break down food so that our body can absorb the nutrients. Water also softens stool,which helps prevent constipation.
Select the corre
A community wants to stop pollutants from its farm flelds from reaching the river. What should It do?
A. Use beneficial animals in the farm fields.
B. Use beneficial Insects in the farm fields.
C. Plant grass in the farm fields.
D. Plant trees in the farm fields.
E. Use buffer strips between the farm fields and the river.
Which of the following is qualitative information?
A. The mineral is red and hard
B. The mineral has a hardness of 8
C. The mineral has a mass of 2 grams
D. The mineral has a volume of 4 cm3
Answer:
option A. is correct.
hope it helps
Answer:
A, The Mineral is red and hard
Explanation:
Because the definition of qualitative is describing an object based on looking at it, and the other selections are just weight and feel.
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select the correct answer from each drop down menu. BLANK will develop pharyngeal arches. BLANK will develop a postnatal tail in the embryonic stage.
the first blank the opinions are
1. earthworms
2. barb fish
3. crabs
4. leeches
and for the second the opinions are
1. ladybugs
2. snails
3. sea cucumbers
4. newts
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Actually Welcome to the Concept of the Biology
1) Brab Fish
2) Newts
Describe how the following are important in the makeup of the cell membrane: 1. Phospholipid bilayer 2. Proteins 3. Carbohydrates 4. Cholesterol
Answer:
1. Phospholipid bilayer - The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell
2. Proteins - Membrane transport protein (or transporter) is a kind of membrane protein that involved in the movement of ions, small molecules, or macromolecules across a biological membrane.
3. Carbohydrates - Carbohydrates covalently linked to proteins (glycoproteins) or lipids (glycolipids) are also a part of cell membranes, and function as adhesion and address loci for cells.
4. Cholesterol - Cholesterol reduces permeability of lipid membranes. ... Cholesterol plays has a role in membrane fluidity but it's most important function is in reducing the permeability of the cell membrane.
Explanation:
Someone plss help plss helppp plllsss
Will mark brainliest
Answer and Explanation:
An acid has a pH that is less than 7. A base has a pH that is greater than 7. Something that has a pH of 7 is neutral, but since it doesn't seem that the question is asking about neutral, you can ignore that for this problem.
Situation 1: Base
Situation 2: Acid
Situation 3: Acid
Situation 4: Base
Situation 5: Acid
Situation 6: Base
A. Water directly out of the tap has a pH of 7.2. When you add carbon dioxide (blow into the water), you get a pH of 5.1. This means that the addition of carbon dioxide makes water more acidic.
B. The most basic solution will have the highest pH. This means that it will be water with bleach added to it.
C. The most acidic solution will have the lowest pH. This means that it will be water with instant coffee.
Can someone help me with labels???? If they are correct ill mark u as the best answer
Answer:
1. Nucleolus- inside of the nucleus, makes ribosomes
2. Rough Endoplasmic Rectilium(Rough ER)- synthesizes proteins, has sibosomes
3. Smooth Endoplasmic Rectilium(Smooth ER)- does not have ribosomes, produces protein and lipid(fat)
4. Vacuole- stores water, sugar, and pigment
5. Chloroplast- photosynthesis happens here
6. Cell Wall- provides support
7. Membrane- controls what goes in and out of the cell
8. Mitochondria- power house of the cell, produces power from chemical energy
9. Golgi Bodies- Prepares proteins and lipids for the inside an outside of the cell
10. Ribosome(the little black dots)- attaches to Rough ER, transfer RNA to protein(protein synthesis),
A car drives with a constant speed of 28 miles per hour. How far can it travel in 2 3/4 hours?
All we need to do is multiply.
Note that 2 3/4 = 2.75
28 * 2.75 = 77 miles
Best of Luck!
Answer: 77
Explanation:
All you have to do is multiply 28 by 2 and 3/4
What organelle creates rRNA for synthesizing ribosomes?
Answer:
nucleus
Explanation:
The nucleus contains the cell 's DNA and directs the synthesis of ribosomes and proteins.
Answer:
nucleolus
Explanation:
Some scientists believe Earth's orbit around the sun has changed contributing to global warming.
is suger a monomer and suger cube a polymer?
Why is sample size important?
Why were Oparin and Darwin's ideas about the Origins of Life not immediately considered to be part of a scientific theory about the origins of life on Earth?
Answer:
Darwin's opinion seems to have changed over time from his original remark in the 1861 3rd edition of The Origin of Species.
Oparin and Darwin’s ideas about the Origins of life are not immediately considered to be part of a scientific theory about the origins of life on earth because the ideas they proposed were difficult to test or observe.
What is Oparin's hypothesis regarding the origin of life?According to the Oparin hypothesis life originate from inorganic molecules, like amino acids considered to be formed first, and then combines to form complex polymers.
This hypothesis has no scientific proof due for this reason the idea of Oparin idea was not immediately considered to be part of a scientific theory.
The theory given by Darwin challenged the idea that God is the creator of all animals and plants that are present on earth and there were no proper pieces of evidence to prove this theory when it is published to convince several scientists.
Due to a lack of pieces evidence and scientific proof, Oparin and Darwin's ideas about the Origins of Life on earth are not immediately considered to be part of scientific theory.
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Mercury is a toxin that is of significant concern due to biomagnification. Explain how mercury found in an aquatic environment can accumulate in
biomagnification, and explain how limiting consumption of large predatory fish, such as swordfish, may be necessary for individuals trying to avoid high
mercury concentrations
Answer: Mercury has been well known as an environmental pollutant for several decades. As early as the 1950's it was established that emissions of mercury to the environment could have serious effects on human health. These early studies demonstrated that fish and other wildlife from various ecosystems commonly attain mercury levels of toxicological concern when directly affected by mercury-containing emissions from human-related activities. Human health concerns arise when fish and wildlife from these ecosystems are consumed by humans.
During the past decade, a new trend has emerged with regard to mercury pollution. Investigations initiated in the late 1980's in the northern-tier states of the U.S., Canada, and Nordic countries found that fish, mainly from nutrient-poor lakes and often in very remote areas, commonly have high levels of mercury. More recent fish sampling surveys in other regions of the U.S. have shown widespread mercury contamination in streams, wet-lands, reservoirs, and lakes. To date, 33 states have issued fish consumption advisories because of mercury contamination.
These continental to global scale occurrences of mercury contamination cannot be linked to individual emissions of mercury, but instead are due to widespread air pollution. When scientists measure mercury levels in air and surface water, however, the observed levels are extraordinarily low.
Explanation:
Mercury can accumulate in biological systems and then pass to humans after consumption (in this case, fish consumption).
What is bioaccumulation?Bioaccumulation can be defined as the process of accumulation of chemical nocive substances in biological systems.
Mercury is a toxic metal that bioaccumulates in life forms such as fish and then passes to humans, which is a serious threat to health.In conclusion, mercury can accumulate in biological systems and then pass to humans after consumption (e.g., fish consumption).
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In what form does carbon move from the atmosphere into the biological
food webs?
Answer:
Carbon enters all food webs, both terrestrial and aquatic, through autotrophs, or self-feeders. Almost all of these autotrophs are photosynthesizers, such as plants or algae. Autotrophs capture carbon dioxide from the air or bicarbonate ions from the water and use them to make organic compounds such as glucose.
Write one scientific question about the organism in the photo.
Answer:
why would this organism a close ancestor of humans evolve differently than us.
4. Monosaccharides are to polysaccharides as
are to
amino acids : proteins
phosphates: lipids
nucleic acids : nucleotides
glycerol : fatty acids
Answer:
C
Explanation:
C
Monosaccharides are to polysaccharides as are AMINO ACIDS to PROTEINS.
Polysaccharides are carbohydrates composed of many subunits called monosaccharides, which are linked together by glycosidic bonds.Proteins are biomolecules consisting of many subunits called amino acids, which are linked by peptide bonds.Lipids represent a broad class of organic molecules composed of a glycerol backbone that attaches to one or more fatty acids.Nucleic acids (either DNA or RNA) are biomolecules composed of long chains of nucleotides linked by phosphodiester bonds.In conclusion, monosaccharides are to polysaccharides as are AMINO ACIDS to PROTEINS.
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Which describes a group of organisms that are members of a species?
Answer:
Population is defined as a group of organisms, which belong to the same species. Example- Human population includes a group of organisms that all belong to the species sapiens
Explanation:
Urgent I’m so confused
Homeostasis is when an internal stimulus causes an external response.
True or False???
Suppose I am TASTE testing two types of energy drinks to see what people prefer. 1. What will the Idependent variable be ? 2. What will the Dependent variable be? 3 Will the data I collect be Qualitative, Quantitative or both?
Answer: 1. Energy drink
2. What people prefer to drink.
Explanation:
1.The independent variable can be referred to that variable that can be manipulated in an experiment. The energy drinks can be changed to see that what people prefer to drink.
2.The dependent variable can be referred to that variable which is the result of the experiment it is influenced by the independent variable. What people prefer to drink is the dependent variable.
3.The data being collected in this experiment will be quantitative. As we can calculate the response of people what they prefer to drink in numbers.
explain why it is important for a scientist to be both logical and creative.
11. Using the diagram to the left,if line n bisects QR find QP
Answer:
QP = 41
Explanation:
Its geometry its easy...
Since its getting cut through the middle that means they equal each other
3x + 5 = 5x - 19 (Use a calculator)
x = 12
Since your solving to find QP you plug it into QP
3(12) + 5 = 41
:)
help me if you can please and ty
If an antiport carrier moving solutes in opposite directions across a cell membrane without requiring energy, this is called
Answer: Countertransport
Explanation:
Cotransport is a type of active transport of substances through a biological membrane. It is characterized by the simultaneous transport of two or more substances, hence its name, and is common in small organic molecules, such as glucose or amino acids, especially in epithelia of absorption and secretion, such as the small intestine and renal tubules. The cotransport can be of two types, simporte or antiport.
Simporte: the two transported molecules move in the same direction, for example both are transported into the cell. Antiport: the two molecules move in the opposite direction, one towards the outside of the cell and the other towards the inside.In both cases, one of the substances moves in favor of its gradient and the other against it. In electrochemical gradients there is potential energy stored and when a substance moves in favor of its gradient this energy is released.
In contransport, the transmembrane protein responsible for co-transportation, is able to use the energy stored in the electrochemical gradient of a substance to move the other substance against its gradient. The electrochemical gradient from which the energy for transport comes is maintained by ATPases, which consume ATP. Since the co-transporter does not directly consume ATP, the co-transport is classified as secondary active transport, while the ATPases perform primary active transport. So, ATPases consume energy to create a gradient and then co-carriers use the energy from the gradient to transport another substance.
In the case of Countertransport, the cell transports two types of molecules in the opposite direction across the membrane. Countertransport is a type of antiport exchange. The key point regarding countertransport is that it transports ions or molecules in opposite directions. Thus, one molecule leaves the cell while the other enters at the same time through the membrane. In addition, this is a type of secondary active transport that uses electrochemical gradient to drive the movements (as it was explained before). Countertransport can mediate the exchange of the same solutes or different solutes. The sodium-calcium exchanger, the Na+ / H+ exchanger and the Cl- / bicarbonate exchanger are examples of countertransport.
Suppose you have two liquids. One has a pH of 2. The other has a pH of 9. What can you tell from those pH?
Answer:
The liquid with a pH of 2 is an acid. The liquid with a pH of 9 is a base.
Explanation:
pH Scale:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
A pH scale ranges from 1 - 14.7 is neutral.Any number on the scale less than 7 is acidic (acid).Any number on the scale more than 7 is basic (base).How many amino acids must be obtained in the diet because they cannot be made by the body?
5
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Answer:
Nine (9) amino acids must be obtained