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.
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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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).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.
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
:)
Write one scientific question about the organism in the photo.
Answer:
why would this organism a close ancestor of humans evolve differently than us.
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:
What is a trophic cascade?
Urgent I’m so confused
Homeostasis is when an internal stimulus causes an external response.
True or False???
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),
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:
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.
What is the importance of studying fossils? * A. To provide information about current life forms and current environmental conditions B. To provide information about how life and environmental conditions may have changed C. To provide information about how previous life forms would exist in current environmental conditions D. To provide information about how current life forms would exist in previous environmental conditions
Answer:
The answer D
Explanation:
Paleontologists find and study fossils all over the world, in almost every environment, from the hot desert to the humid jungle. Studying fossils helps them learn about when and how different species lived millions of years ago. Sometimes, fossils tell scientists how the Earth has changed.
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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Why is sample size important?
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:
Which sphere was impacted the most?
Humans are part of the biosphere because we are living things. The biosphere includes ALL living things.
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
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
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 :))
explain why it is important for a scientist to be both logical and creative.
whos trying to helps me ?
Answer:
1.9mL to 8.7mL (Answer A)
Answer:1.9ml to 8.7ml
Explanation:
how do we know energy is transferred in an energy pyramid?
Answer:
While food chains and food webs show relationships between organisms, and energy pyramid quantifies the amount of energy transferred from one trophic level to the next, when one organism eats another, wherein approximately 10% of the energy available is retained and passed along.
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.
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
Like and Rate
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.
is suger a monomer and suger cube a polymer?
name the following the plant hormone which is responsible for the ripening of fruits
Answer:
ethylene
Explanation:
plant hormone responsible for fruit ripening as well as senescence of vegetative tissues.
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.
Hope This Helped
is Wood Block a mineral or non-mineral
Answer:
Non-mineral
Explanation:
Wood is not a mineral. Minerals are rock and other types, but wood is not a rock.
-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.
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4. What statement best describes the composition (parts that make up) of an
ecosystem?
a. Animals and rocks
b. Bacteria and fungi
C. Sunlight and water
d. Biotic and abiotic factors
Answer:
D
Explanation:
This includes all things living and not.