Answer:
DNA are important for inheritance, coding for proteins and the genetic instruction guide for life and its processes
Explanation:
DNA are well known for cellular life. It also helps in the storage of information for long term. In it, has the information for the making of different components of cell. i.e. protein and RNA molecules. They have information like from the development, to reproduction til the death of the cell. It works by replication transcription and translation. The genetic information's are stored like bookshelf or may say like a hard drive which is found to be quite boring. They are made up of nucleotide.
why mammal embroys and dinosaur embroys have placodes
They came to the conclusion that birds, mammals, and reptiles all inherited placodes from the very same antiquity reptilian ancestor.
What is an ancestor?An ancestor is a parent or (recursively) the parent of an antecedent, also known as a forefather, fore-elder, or forebear.
An ancestor is anyone from whom one descends. In law, the person who has inherited an estate.
According to a new study, the ancestor of all placental mammals, the diverse lineage that includes almost all species of mammals living today, including humans, was a tiny, furry-tailed creature that evolved shortly after the dinosaurs died.
Modern humans evolved from their most likely common ancestor, Homo erectus, which means "upright man," in Africa within the last 200,000 years.
Birds, mammals, and reptiles all inherited placodes from the same ancient reptilian ancestor, according to both mammals and dianosaurs.
Thus, mammal embryos and dinosaur embryos have placodes.
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What are genotypes and phenotypes
Genotypes are your genetic "makeup" and phenotypes are your physical "makeup"
As you add drops of water to the surface of the penny, each drop sticks to the other
water droplet forming a large drop on top of the penny. This is caused by which
water property?
adhesion
cohesion
O capillary action
Answer:
Cohesion property.
Explanation: Cohesion refers to the attraction of molecules for other molecules of the same kind, and water molecules have strong cohesive forces thanks to their ability to form hydrogen bonds with one another.
Answer:
As you add drops of water to the surface of the penny, each drop sticks to the other water droplet forming a large drop on top of the penny. This is caused by (B) Cohesion.
Explanation:
The pure substance molecule attracts each other. Their sticking process to each other is called cohesion. Their depending property shows whether the substance is cohesive or not. Hydrogen bond easily attracts each other because of this property and due to this, water is very cohesive. In liquid form of water, they easily break and reform it. The cohesive property of water is what we can see in our daily life. We can see it in forms of droplets and streams.
E
DNA is composed of repeating structural units
called
T .
is the five-carbon sugar found in
DNA.
Answer:
DNA is composed of repeating structural units called nucleotides.
Deoxyribose is the five-carbon sugar found in DNA.
Explanation:
Each DNA (deoxyribo nucleic acid) molecule has two strands and they are made up of monomers called nucleotides. The nucleotide in DNA contains a phosphate group attached to a five-carbon deoxyribose sugar molecule and one of the four nitrogenous bases: adenine, guanine, cytosine and thymine. DNA has a phosphate-sugar backbone from which the nitrogenous bases project. This backbone is made by the nucleotides that are combined together by covalent bonds between the sugar of one nucleotide and the phosphate of the next. The two strands are held together by hydrogen bonds between the base pairs (adenine bonds only with thymine and cytosine with guanine) to form a double helix structure.
Answer:
1. nucleotides
2. Deoxyribose
Explanation: :)
Which of the following is the goal of the peer review process?
O
A. Reconnection with long-lost friends
O
B. Memorization of a list of facts
O
C. A fair assessment of an experiment
O
D. The appearance of productive activity
A fair assessment of an experiment is the goal of the peer review process
Explanation:
The method of quality control of scientific discoveries and research work is is referred as the process of peer review. In this process the work of scientists undergoes the expert scrutiny before publishing.
They check whether the work is properly formulated and is valid for publishing. Its main purpose is to assess the experiment of researchers and to give permission of acceptance to the writing for publishing in a journal.
Answer:
C. A fair assessment of an experiment
I just did it on Ape.x
A rabbit eats a carrot. What happens to the matter in the carrot?
A.
The matter is completely consumed by the rabbit.
B.
The matter is completely eliminated by the rabbit as waste.
C.
The matter is converted to energy and carbon molecules.
D.
The matter is converted to energy only.
Answer:
Answer to this question is option C i.e. The matter is converted to energy and carbon molecules.
Explanation:
All the living beings from plants to animals are made up of carbon, and so is carrot, being a part of a plant. When an animal, say rabbit, consume this carrot, they receive the carbon from the carrot in the form of carbohydrates and proteins. This carbon combines with the oxygen in the animal cell to produce energy and also releases residual carbon in the form of carbon dioxide. Hence, after consumption of carrot by the rabbit, the matter in the carrot is converted to energy and carbon molecules.
Answer:
carbon molecules
Explanation:
Explain why sex-linked traits show up in males more often than females. Draw a punnett square
for the following scenario: Hemophilia is a sex linked recessive trait. Cross a mother who is a
carrier for hemophilia and a father who does not have hemophilia. Explain the chance for a
daughter or a son to have the hemophilia trait?
A landscape planting plan...
A)Shows the location of the project in the particular sub-division, section of town of community
B)Shows specific contour lines with recommended chonges.
C)Shows location of walks, walls, drives and plonters.
D)Shows where all the plants are located, bed areas, turt areas etc.
A landscape planting plan shows where all the plants are located, bed areas, turt areas etc.
Option D
Explanation:Landscape planting plans are the plans that are made to plant new trees or plantations in an area systematically. At first, a plan is made to make sure the plants are planted well, and they get perfect nutrition and water, and don’t hamper each other in case of availability of nutrition and sunlight.
Each tree is given a definite area around them to grow into a full plant. Then they are allotted on the map with particular name and batch codes. Thus the planting maps also called as landscape planting plans are made.
How do phythophtora infestans reproduce
Answer:
Phytophtora infestans is host-specific pathogen and can reproduce both asexually and sexually.
Explanation:
Asexually: The spores (sporangia) of P. infestans are transported via wind or water. Once they land on the plant tissue, the zoospores are released. When conditions are warmer, zoospores are germinated. Here, a germ tube is formed which penetrates into the plant tissue and allows the newborn to get nutrients from plant sap for its own growth and development.
Sexually: Sexual reproduction takes place when both male and female are present. Here, antheridium and oogonium nuclei (haploid) fuse together to form a diploid oospore. The oospore then develops into sporangium and the rest of the cycle follows the same pattern as of asexual reproduction.
Which muscles act involuntarily? (i)Striated muscle (ii) Smooth muscle (ii)Cardiac muscle (iv) Skeletal muscles (a) I and ii (b)ii and iii (c)iii and iv (d) I and iv
Answer:
ii and iii
Explanation:
All the others are voluntary
Which fact is true about the inner core layer of the earth?
The inner core __________________
A) Is earths thinnest layer.
B) Provides the magma for volcanoes.
C) Is hotter than the surface of the sun.
D) Contains the least amount of pressure.
Answer:
C
Explanation:
It is hotter than the sun's surface.
(Spit Open)
Plants are able to continue to grow and develop
once the starch supply in the seed is gone,
because they
mog
beit
A)
B
A) produce more seeds, which contain additional
food reserves
B) develop roots to absorb starch from the
environment
C) have chloroplasts and use light energy to
make more food
D) grow leaves, which use light energy for cell
respiration
Answer:
C
Explanation:
The answer is C because they are Photosynthetic
Plants are able to continue to grow and develop once the starch supply in the seed is gone, because they have chloroplasts and use light energy to make more food. The correct option is C.
What is chloroplast?Since photosynthesis occurs in chloroplasts, which are organelles in plant cells that contain chlorophyll, chloroplasts are essential for life on Earth.
Proplastids give rise to chromoplasts, leucoplasts, and other plastids, including chloroplasts.
Organelles found in plant cells called chloroplasts use the photosynthetic process to change light energy into relatively stable chemical energy.
They maintain life on Earth in this way. Additionally, chloroplasts support a variety of metabolic processes in plant cells, such as the production of starch, fatty acids, and membrane lipids.
When the starch supply in the seed is depleted, plants can still grow and develop because they have chloroplasts, which utilise light energy to produce more food.
Thus, the correct option is C.
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In the Watson-Crick model of a double helix, the "steps" of the "spiral staircase" are composed of:
A- sugars
B- nitrogen bases
C- phosphates
Answer:
Explanation:
DNA’s famous double helix is often depicted as a spiral staircase, with two long strands twisted around each other and steps composed of four chemical building blocks called bases. Each of these bases contain rings of carbon, along with various configurations of nitrogen, oxygen, and hydrogen. The arrangement of these atoms allow G to pair with C and A to pair with T, like interlocking gears in an elegant machine.
Answer:
The answer is C
Explanation:
Which statement best describes how the availability of minerals affects human activity?
Humans tend to migrate toward areas with plentiful mineral resources.
Humans must find new mining areas in order to protect the environment.
Humans must depend on the mineral resources that are easy to access.
Humans tend to seek out the rarest minerals for the greatest economic benefit.
Answer:
D would be my answer, if it's multiple choice, D and A
Explanation:
Humans love rare minerals and we as humans tend to move closer to them
Hope this helps:)
The statement that best describes how the availability of minerals affects human activity is : (A). Humans tend to migrate toward areas with plentiful mineral resources.
Meaning of Mineral ResourcesMineral resources can be defined as those element, materials, substances that is contained in a certain proportion or amount in the earth crust or on the earth crust which can be extracted for the good of mankind.
Minerals has so much importance and has majorly shaped man's existence.
In conclusion, The statement that best describes how the availability of minerals affects human activity is Humans tend to migrate toward areas with plentiful mineral resources.
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Which of the following is the term for
the substances which are involved in
order to make the formula of
photosynthesis work?
A. products
B. organelles
C. reactants
D. synthesis
The correct answer to the question is C. reactants.The substances involved in making the formula of photosynthesis work are called reactants. The main reactants for photosynthesis are water and carbon dioxide. Thus, the correct term in the context of the question is reactants.
The substances involved in making the formula of photosynthesis work are called reactants.
During photosynthesis, the main reactants are water (H2O) and carbon dioxide (CO2), which, in the presence of light energy, produce glucose (C6H12O6) and oxygen (O2) as products. The chemical equation for photosynthesis can be summarized as:
6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2.
Therefore, the correct answer to the question is C. reactants.
Which is a disaccharide?
glucose
fructose
sucrose
cellulose
Answer:
Its C: Sucrose
Explanation:
A disaccharide is a polymer made of two monomer units linked and bonded together. A sucrose molecule is an example of a disaccharide carbohydrate. Thus, option C is correct.
What are disaccharides?Disaccharides are the carbohydrates that constitute of two sugar or monomeric units linked by a glycosidic linkage. They are simple sugars that can get dissolved in water.
Sucrose is a simple and most abundant sugar that comprises one glucose and one fructose molecule. The monomeric units are linked by ether bonds between the reducing ends of both sugars.
Glucose and fructose are monosaccharides that comprise only one sugar molecule, whereas cellulose is a polysaccharide that is insoluble sugar with various monomeric units.
Therefore, option C. sucrose is a disaccharide.
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A person has begun eating a meal that contains starches, fats, proteins, and a
small portion of a plastic spoon. Describe the journey of the food from the
beginning to the end of the digestive system. Indicate what happens to it
physically and chemically. Identify all the major organs it travels through and the
accessory organs that assist in the digestion. BE THOROUGH!
The journey of the food through the digestive system will actually digest the food. The rest will be given out as feces.
Explanation:The digestive system actually consists of digestive tract and Digestive glands. The processes that are associated with digestive system is - ingestion, digestion, absorption, assimilation and egestion.
The food that is taken is first smashed and chewed into a rough bolus by mixing with saliva. The salivary amylase slightly digests the starch into dextrin.
Then the food is engulfed through the oesophagus into stomach. Inside stomach, the food is mixed with an enzyme pepsin and HCl. Pepsin digests the proteins into peptones and peptides. The food is converted into a bolus and transported into duodenum.
In duodenum, there are several enzymes from small intestine and pancreas breaks the fats into fatty acids, proteins into peptides and starch into carbohydrates like glucose. They are absorbed and the undigested substances are left over ad feces.
Cells go through a repeating cycle of events in growth regions such as plant root tips and animal embryos.
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Question 24 of 25
2 Points
Which human activity has the most negative effect on the stability of a river
environment?
O
A. Driving a car near the river
O
B. Boats leaking oil into the river
O
c. Sailboats being stored in the river
O
D. People picnicking along the bank of the river
if a DNA strand is found to be 22.6% cytosine, what percentage of that strand is thymine?
Answer:
27.4% Thymine
Explanation:
Guanine amount is equal to the amount of Cytosine
Adenine amount is equal to amount of Thymine
22.6 + 22.6 = 45.2
100 - 45.2 = 54.8
54.8% of the DNA is made up of Adenine AND Thymine
54.8/2 = 27.4
Which characteristics are used to describe air? Select three options.
altitude
density
mass
pressure
radiation
Answer:
Density, Pressure and Mass are used to describe air.
Answer:
Density, Pressure and Mass.
Explanation:
Air is a fundamental element, being formed by a combination of gases, water vapor and suspended particles, it can be described using the terms density, pressure and mass. It is therefore a vital substance for the maintenance of life on earth, alongside water and soil.
In addition, air is essential for climate, rain distribution and seed dispersion which favor agricultural production. On the other hand, it favors the development of various diseases by viruses, bacteria and microorganisms, which are carried by drafts.
The main elements that make up air are essentially nitrogen (78%) and oxygen (21%) and in small amounts argon (0.94%), carbon dioxide (0.03%), neon (0.0015%). Although it has weight and takes up space in the atmosphere, note that air is a collection of substances that has no color, smell, taste and that we cannot see or touch.
the weight of a given vapor as compared with an equal volume of air with air having a value of 1.0, is a measurement of
Answer:
Archimedes principle
Explanation:
It is a measure of upthrust or specific gravity
Final answer:
The weight of a given vapor compared with an equal volume of air is a measurement of vapor density. Specific measures such as specific humidity and absolute humidity are used to understand the moisture content in the air, with the latter being more reliable because it is less influenced by temperature and pressure changes.
Explanation:
The weight of a given vapor as compared with an equal volume of air, with air having a value of 1.0, is a measurement of the vapor density. This concept is important in understanding how air and other gases mix and how they behave in different conditions of temperature and pressure. When considering the Earth's atmosphere, we know that,
This relationship means that, on average, at sea level, a column of air above 1.00 m² of the Earth's surface has a weight of 1.01 x 10⁵ N, equivalent to 1 atm.
In terms of humidity, we use different measures such as specific humidity and absolute humidity. Specific humidity is measured as the weight of water vapor in the air per unit weight of air, which includes the weight of water vapor and is expressed in grams of water vapor per kilogram of air. It is a more useful measure because it is not significantly influenced by temperature or atmospheric pressure. Absolute humidity, on the other hand, is expressed as the weight of water vapor per unit volume of air, usually measured in grams per cubic meter, but it changes with temperature and pressure which makes it less reliable for certain calculations.
As you add drops of water to the surface of the penny, each drop sticks to the other water droplet forming a large drop on top of the penny. This is caused by which water property? Question options: adhesion cohesion capillary action
Answer:
the water molecules are like magnets for each other.
Explanation:
This cohesion property results in surface tension. Because water molecules at the surface of the water puddle attract more to one other than they do to the air molecules above them, they cling together and form a dome shape on the coin. Surface tension prevents the water molecules from falling out and spilling
The cohesion property of water causes each drop of water to stick to the other water droplet forming a large drop on top of the penny.
PROPERTY OF WATER:
Water is a unique molecule owing to the fact that it possess specific properties that distinguishes it from other molecules. Majority of these unique properties of water is attributed to the hydrogen bond that forms between water molecules. One of the properties of water is COHESION, which is the ability for water to attract other water molecules i.e. like attraction. Cohesion is the reason why water molecules join to one another and move together. According to this question, as one adds drop of water to the surface of a penny, each drop sticks to the other water droplet forming a large drop on top of the penny. This is caused by the cohesion property of water.Learn more at: https://brainly.com/question/4119473?referrer=searchResults
How many food chains make up the food web?
Answer:
hi the answer is 3
i hope this helps!!
Explanation:
Final answer:
A food web consists of multiple intersecting food chains and represents the flow of energy and matter through an ecosystem. On the other hand, a food chain is a simplified diagram that shows the feeding interactions in an ecosystem through a single pathway. Both food chains and food webs are valuable concepts to describe ecosystems.
Explanation:
A food web consists of multiple intersecting food chains and represents the flow of energy and matter through an ecosystem. It shows the feeding relationships between many organisms, demonstrating that most organisms eat and are eaten by more than one species. A complete food web can include hundreds of different feeding relationships.
On the other hand, a food chain is a simplified diagram that shows the feeding interactions in an ecosystem through a single pathway. It follows the linear model of energy transfer. While food chains are easier to follow and experiment with, food webs provide a more holistic and complex representation of ecosystem dynamics.
Both food chains and food webs are valuable concepts to describe ecosystems, with food chains being more straightforward and food webs offering a more accurate and comprehensive depiction of feeding relationships.
Why are pesticides used?
Answer:
Pesticides are used to kill insects,for proper cultivation etc
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When platy materials have a parallel alignment a rock is ____ APEX
Answer:
The rock texture with aligning parallel platy grains is to exhibit metamorphic foliation.
Most metamorphic rocks have a platy or planar structure which is caused by the parallel alignment of micas and/or other flat mineral so this structure is called foliation.
Metamorphic rocks can be foliated or non-foliated.
Foliated metamorphic rocks will display banding or layering of its mineral constituents while non-foliated metamorphic rocks will not.
Answer:
The answer is: Foliated
Does any one know number
7.
8.
9.
Answer:
7-B) Plantae, 8-D) Fungus, 9-B)
Explanation:
Most multi-cellular, nucleated autotrophs that carry on photosynthesis are belong to the Plantae kindom. This kingdom includes- mosses, ferns, algaes.
The Heterotrophic eukaryote that associated with the decomposition of dead organisms are Fungus. It is a multi cellular and multi nucleated cell.
Protists are prokaryotic organisms and bacteria are eukaryotic. Protists are not plants or animals , bacteria are microbes.
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Answer:
The greatest reaction for this enzyme will be in tubes 4 and 5
Explanation:
Enzymes found in a particular environment tend to work best in the conditions of that environment. For example, enzymes from human cells usually work at an optimum temperature of 37C, our body temperature.
In this example, the bacterium is found in conditions of 50-80C. Therefore, we assume the bacteria will work best at these conditions. In the experimental set up, the tubes that correspond to these temperatures are 4 and 5.
Ore is feeling cold, and he is clenching his fists together to stay warmer. He then releases his grip a little bit because he feels that it is too tight. Which two particular sensory receptors are activated through this experience?
Explanation:
The thermoreceptors in Ore’s skin detect low blood temperatures in the skin blood vessels due to the loss of heat from the skin to the cold environment. The receptors send signals to the brain, and the brain sends motor signals to the muscles (including those of the fist) to react to the stimuli. This is why Ore clenches his fists to reduce heat loss.
However, as his clenched fist gets tighter the mechanoreceptors in the skin become depolarised when the signal (the pressure) surpasses the required threshold. This sends a signal to the brain and the brain responds by sending a motor signal to the fist muscle so Ore relaxes the fist a bit and this softens the clenching.
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Answer: The correct answer is B thermoreceptors and mechanoreceptors.
Explanation: EDG2023
If the parent strand of DNA is 5'atggcttac'3 what will the daughter strand be?
Answer:
If the parent strand of DNA is 5' atggcttac 3', then the daughter strand will be 3' taccgaatg 5' .
Explanation:
The DNA (deoxyribo nucleic acid) has a double helix structure with the two strands running in antiparallel directions to each other, and the nitrogenous bases in them are adenine (A), thymine (T), cytosine (C) and guanine (G). In DNA, the complementary base pairs are adenine (A) with thymine (T) and cytosine (C) with guanine (G).
DNA replication is the process in which DNA is copied during the cell division cycle. During replication, the complementary strands of the original double helix DNA are separated and one of the two strands in the original molecule is saved in the new DNA molecule. The process where part of the DNA is saved during replication is known as semi conservative replication. Thus the new DNA molecule is made of an original strand and a newly synthesized strand. During DNA replication, an enzyme known as DNA helicase breaks the hydrogen bonding between the base pairs, adenine with thymine and cytosine with guanine. This unwinds the parental DNA double helix into two separate strands and thus creates a Y shaped replication fork, where the template for replication begins.