What was Friedrich Miescher's contribution to the discovery of the genetic code? He created the first photograph of the structure of DNA. He discovered how the DNA bases pair together. He created the first accurate model of DNA's structure. He extracted and observed DNA from white blood cells.
Answers
Answer:
He extracted and observed DNA from white blood cells.
Explanation:
Friedrich Miescher, who is a Swedish Botanist, is the scientist who isolated for the first time. In 1869, Miescher isolated a chemical he called NUCLEIN, which is called Nucleic acid now.
He discovered this so called "NUCLEIN" substance from the nuclei of white blood cells. Nucleic acids are the DNA and RNA we know today, hence, Miescher's discovery was significant to the genetic code as he even agitated for the inclusion of his discovery into inheritance.
Answer:
D. He extracted and observed DNA from white blood cells.
Explanation:
I took the test
Related Questions
Is the body mass evolution in horses an example of microevolution changes or macroevolution? Explain your answer by citing examples of both micro and macro evolution.
Answers
Answer:
This scale of evolution occurs above the level of the species. Fossils provide evidence for evolution at this scale. The evolution of the horse family. Micro evolution is evolutionary change within a species or small group of organisms, especially over a short period. And Macro evolution is major evolutionary change. The term applies mainly to the evolution of whole taxonomic groups over long periods of time.
Explanation:
1. What kinds of pollution do you know? Which is the worst? Discuss in group.
2. What are fossil fuels? Give examples. Where are they used? Can they be replaced?
3. Some factories dump waste water in rivers and ocean. How can we prevent this?
4. People throw away tons of garbage everyday. How can we reduce the amount of garbage?
5. Do you drink bottled water? Why or why not? What is its effect on the environment?
pls 3-5 sentence and then explain briefly the answer. ty
Answers
Answer:
1. There's air pollution, water pollution, noise pollution, and light pollution. The worst pollution is air pollution because it can cause severe health problems like respiratory diseases or even cancer.
2. Fossil fuels are resources that are formed from the remains of dead plants and animals. An example would be coal, oil, and natural gas. These fuels are used to generate electricity, power vehicles, heat homes and buildings. Yes, there many other energy sources that can replace fossil fuels.
3. One way to prevent factories from dumping waste water in rivers and oceans is to implement stricter regulations and penalties for those who violate them.
4. One of the best ways to reduce the amount of garbage is to reduce, reuse, and recycle.
5. Yes, I drink bottled water because it's more water to drink from a bottle and its effect on the environment is recycling and being reused.
1. Pollution can be of many types such as air pollution, water pollution, noise pollution, and land pollution. In my opinion, air pollution is the worst because it affects people's health and can cause breathing problems, heart diseases, and even cancer. Discussing this issue in a group can help us understand different perspectives and find solutions to reduce pollution.
2. Fossil fuels are non-renewable sources of energy that are formed from the remains of dead plants and animals. Examples of fossil fuels include coal, oil, and natural gas. They are used to generate electricity, fuel vehicles, and heat homes. However, they are a major contributor to air pollution and climate change. Fossil fuels can be replaced by renewable sources of energy such as solar, wind, and hydro power.
3. Factories dumping waste water in rivers and oceans can have a negative impact on aquatic life and the environment. To prevent this, factories can treat their waste water before discharging it into the environment. Governments can also enforce strict regulations and penalties for factories that violate environmental laws.
4. To reduce the amount of garbage, we can follow the three R's - reduce, reuse, and recycle. We can reduce the amount of waste we generate by using reusable bags, bottles, and containers. We can also compost organic waste such as food scraps and yard waste. Recycling can also help reduce the amount of garbage by turning waste into new products.
5. I try to avoid drinking bottled water because it generates a lot of plastic waste that can take hundreds of years to decompose. Plastic waste can also harm wildlife and pollute the oceans. Instead, I use a refillable water bottle and fill it with tap water. Tap water is safe to drink in most developed countries and can be a more sustainable choice.
Giving BRANLIEST!!!
Answers
Answer: c
Explanation:
They are different organisms.
Answer:
c
Explanation:
i think
I will give brainiest to whoever can give me something that i can turn in (im in 7th grade so nothing too smart)
Answers
Answer: These two tissues are similar because they both need nutrients to heal and grow. They both use sugar molecules, whether it be from digestion or from photosynthesis. without the sugar molecules, the cell in the tissue will die and the tissue will die.
Explanation: hopefully this can be of use.
PLEASE ANSWER: The photo shows green moss growing on a rock. Which term describes the group of plants that mosses belong to?
A. Vascular
B. Pollinating
C. Flowering
D. Nonvascular
Answers
Answer:
The answer is D
Explanation:
twitch Kietsu_lol
Nguyen uses a triple beam balance to measure the mass of each rock. Read the values on the balance for rocks X, Y, and Z.
Answers
Answer:
X = 120
Y= 710
Z= 620
Explanation:
The Density of Rocks Part A Nguyen uses a triple beam balance to measure the mass of each rock. Read the values on the balance for rocks X, Y, and Z. Rock Balance Reading of Rock Mass (g) X triple beam part of mass balance with top beam with pointer at 20, middle beam with pointer at 0, and lowest beam with pointer at 1 Y triple beam part of mass balance with top beam with pointer at 10, middle beam with pointer at 0, and lowest beam with pointer at 7 Z triple beam part of mass balance with top beam with pointer at 20, middle beam with pointer at 0, and lowest beam with pointer at 6
y = 710
z = 620
What is the structure found on roots that allows plants to absorb more water and nutrients from the soil?
Answers
Hope this helps!!!
Answer:
Roots hairs
Explanation:
I believe it could be this because it is well hard to find out but with roots hairs it is a hair forming cell on the epidermis of a plant root. They can be found only in a region of maturation of the root, also the structures will allow the plant to get water and nutrients from the soil.
I hope this helps sorry if it was wrong but also good luck!
HEEEELLLLLLLLPPPP PPPLLLZZ T^T
Answers
Answer:
1. A satellite is any small objects that orbits a larger objects
2. The space shuttle was developed as a reusable means of transporting people and materials between Earth and space.
3. A lander touches down on a planet’s surface.
4. A rocket is a spacecraft sent to explore without humans.
5. A space probe uses exhaust to propel itself
Hope this helps.
A satellite is any small object that orbits a larger object. The space shuttle was developed as a reusable means of transporting people and materials between Earth and space. A lander touches down on a planet's surface. A space probe is a spacecraft sent to explore without humans. A rocket uses exhaust to propel itself.
Any small object that orbits a bigger object is a satellite. Satellites can be man-made or natural, such as moons orbiting other planets or man-made objects sent into space to carry out certain functions.
A reusable method of moving people and cargo between Earth and space was established with the space shuttle. It was a spaceship that NASA utilised for a variety of tasks, such as setting up satellites, carrying out research, and maintaining the Hubble Space Telescope.
On the surface of a planet, a lander touches down. It is a spaceship intended to safely touch down on the surface of a celestial body, like a planet, the moon, or an asteroid.
In order to learn more about the surface and surroundings of the body they land on, landers are often fitted with instruments and experiments.
A spaceship launched to explore without humans is called a space probe. Unmanned robotic spacecraft known as probes are launched to collect data in space or undertake scientific examinations of celestial entities.
They have a range of devices and sensors that they may use to gather data and send it back to Earth.
Thus, exhaust is used by a rocket to propel itself. Rockets are autonomous vehicles that move forward by ejecting high-velocity gases from their engines.
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"Gametes are haploid cells." What does this sentence mean?
Answers
The sentence “gametes are haploid cells” means that gametes/sex cells have a single set of unpaired chromosomes
“Gametes are haploid cells.” This sentence means that gametes contain half the total number of chromosomes that are present in the other cells of the organism.
What are gametes?Gametes are the reproductive cells of an organism that are involved in sexual reproduction. They are specialized cells that are produced with the process of meiosis.
In animals, the male gamete is called sperm while the female gamete is called ovum or egg. Sperm is typically a smaller and motile gamete which fertilizes the egg to form a diploid zygote (2n) by the process called fertilization.
Gametes are important for sexual reproduction and the maintenance of genetic diversity in populations. They are also the key to the process of evolution, which can lead to genetic variations that can be passed on to the future generations.
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Limestone is a common form of calcium carbonate. When limestone is subjected to high heat, it becomes calcium oxide and releases carbon dioxide gas. This change in limestone, at a given temperature, is an example of:
A. a physical change like the melting of ice
B. a chemical change like the rusting of iron
C. an igneous change like the melting of rock in a volcano
D. a reversible change such as hardening melted butter
Answers
The change in limestone at high temperature is an example of a chemical change like the rusting of iron.
I want us to understand that a chemical change is said to occur when there is a change in the composition of a substance. We must also note that a chemical change is not easily reversible once it occurs. New substances are formed in a chemical change.
Considering the decomposition of limestone, two new substances are formed, carbon dioxide and calcium oxide. This is a chemical change just like the rusting of iron.
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Professor Parsons says
that Cramwood made a
mistake with his BAAD.
What could it have been?
What do you predict the
court will say? Write your
answer to the question
below on the other side
of this page
Answers
By adding tape to his BAAD, Cramwood increased its mass and increased
its inertia. The bigger BAAD requires more force to stop and ends up smacking Cramwood in the head when he applies the brakes.
What is inertia?Inertia is the tendency of an object to resist a change in its motion. Specifically, it is the property of matter that causes an object to maintain its state of rest or uniform motion in a straight line unless acted upon by an external force.
In other words, an object at rest will remain at rest, and an object in motion will continue to move at a constant speed and in a straight line, unless acted upon by an external force.
The amount of inertia an object has depends on its mass, with more massive objects having more inertia than less massive objects.
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Jane observes that a shark detects its prey without actually touching it. Based on her observation, which conclusion is correct?
a The shark is unable to apply any force.
b The shark applies a contact force on the prey.
c The shark is unable to apply force at a distance.
d The shark applies a non-contact force on the prey.
Answers
Answer:
D. The shark applies a non-contact force on the prey.
Reasoning:
Sharks can hear and smell from a far distance. Making it easier to find their prey without touching it.
Unlike humans who have 5 senses, sharks actually have 7. So they could be using any of there senses other than touch to detect there prey. (The senses they could be using are sight, smell, hearing, taste, electroreception, and/or there lateral line.)
This is due tomorrow when I go back to school and I don't know what to do because I wasn't at school the day we did this..
List 4 factors that affect the amount of damage that occurs in a collision.
Please help
Answers
Answer:
momentum, speed, weight and tension
im not 100% sure this is right but i tired. sorry if its incorrect
Explanation:
HELP ASAP!!
Research how coral reefs are formed. What types of animals live there? What important roles do cnidarians play in coral reefs? How do the tiny animals get their food? How do algae help the corals? Write three paragraphs describing coral reefs. Include the information listed above plus any other information you find.
Answers
Fish, corals, lobsters, clams, seahorses, sponges, and sea turtles are only a few of the thousands of creatures that rely on reefs for their survival.
Cnidaria have important ecological roles as reef structure builders, and as predators and prey in planktonic and benthic ecosystems.
At night, coral polyps come out of their skeletons to feed, stretching their long, stinging tentacles to capture critters that are floating by. Prey are pulled into the polyps' mouths and digested in their stomachs.
Algae belonging to the group known as dinoflagellates live inside the corals' tissues. The algae use photosynthesis to produce nutrients, many of which they pass to the corals' cells. The corals in turn emit waste products in the form of ammonium, which the algae consume as a nutrient.
Coral reefs begin to form when free-swimming coral larvae attach to submerged rocks or other hard surfaces along the edges of islands or continents. As the corals grow and expand, reefs take on one of three major characteristic structures — fringing, barrier or atoll.
Fish, corals, lobsters, clams, seahorses, sponges, and sea turtles are only a few of the thousands of creatures that rely on reefs for their survival.
Cnidaria have important ecological roles as reef structure builders, and as predators and prey in planktonic and benthic ecosystems.
At night, coral polyps come out of their skeletons to feed, stretching their long, stinging tentacles to capture critters that are floating by. Prey are pulled into the polyps' mouths and digested in their stomachs.
Algae belonging to the group known as dinoflagellates live inside the corals' tissues. The algae use photosynthesis to produce nutrients, many of which they pass to the corals' cells. The corals in turn emit waste products in the form of ammonium, which the algae consume as a nutrient.
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate.[1] Most coral reefs are built from stony corals, whose polyps cluster in groups.
Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian.[2]
Sometimes called rainforests of the sea,[3] shallow coral reefs form some of Earth's most diverse ecosystems. They occupy less than 0.1% of the world's ocean area, about half the area of France, yet they provide a home for at least 25% of all marine species,[4][5][6][7] including fish, mollusks, worms, crustaceans, echinoderms, sponges, tunicates and other cnidarians.[8] Coral reefs flourish in ocean waters that provide few nutrients. They are most commonly found at shallow depths in tropical waters, but deep water and cold water coral reefs exist on smaller scales in other areas.
Coral reefs have declined by 50% since 1950, partly because they are sensitive to water conditions.[9] They are under threat from excess nutrients (nitrogen and phosphorus), rising ocean heat content and acidification, overfishing (e.g., from blast fishing, cyanide fishing, spearfishing on scuba), sunscreen use,[10] and harmful land-use practices, including runoff and seeps (e.g., from injection wells and cesspools).[11][12][13]
Coral reefs deliver ecosystem services for tourism, fisheries and shoreline protection. The annual global economic value of coral reefs has been estimated at anywhere from US$30–375 billion (1997 and 2003 estimates)[14][15] to US$2.7 trillion (a 2020 estimate)[16] to US$9.9 trillion (a 2014 estimate).[17]
Sorry I gave you more than 3 paragraphs.
Triangle DEF is shown below. What is the measure of
Answers
Answer:
26°
Explanation:
a triangle is 180°
180-(122+32)
=26
Infectious Disease Investigation
The students are to investigate an infectious disease.
They will choose a specific infectious disease, such as the flu, common cold, or
COVID-19, and research its causes, symptoms, and preventive measures.
Students are to create informative posters or presentations about the disease,
including its transmission methods and ways to protect oneself from infection.
They will explain the importance of personal hygiene and vaccination in preventing
the spread of infectious diseases.
Following the summer vacation, the students will be given an opportunity to present
their findings to the class or organize an "Infectious Disease Awareness Campaign"
where they can share their posters or presentations with their peers.
Answers
Answer:
The common cold is an illness affecting your nose and throat. Most often, it's harmless, but it might not feel that way. Germs called viruses cause a common cold.
Often, adults may have two or three colds each year. Infants and young children may have colds more often
HELPPPPPP I NEED ASAP
Question: What is the role of photosynthesis in the cycling of matter and the flow of energy into and out of organisms?
Answer: Some organisms transform solar energy into chemical energy through the process of photosynthesis, which is subsequently used to the production of carbohydrates.
Why does the evidence support your claim? Justify your evidence and how it supports your claim. A few sentences that explain the science behind WHY and HOW the evidence supports the claim:
Academic vocabulary
Make connections
Introductory sentence stems:
Based on the evidence…
It can be concluded…
The evidence reveals/indicates…
Concluding statement stems:
This confirms…
Therefore,
All this proves…
In conclusion…
As a result
*****THE PICTURE IS MY EVIDENCE I JUST NEED A REASONGING FOR MY EVIDENCE******
Answers
Answer: By the process of photosynthesis, some organisms convert solar energy into chemical energy, which is then used to produce carbohydrates.
Using the evidence above a plain which color guppies would survive in each environment (prefator and no predator) and why
Plz will be marked BRAINLIEST and thanks
Answers
Answer:
As we can see from the graph above, brightly colored guppies would only survive in environments without predators, as they have worse camoflague thanks to their bright tail fins. In an environment with predators, guppies with plain/not brightly colored tail fins would survive better, seeing how while even placed in the predator's sight the guppies were less likely to be attacked when not brightly colored.
I may need some help on a lot of these questions
Answers
Answer:
number three is ghe real answer
Please Answer FAST ASAP
Type your response in the box. Do you think humans go through a simple life cycle? Explain your reasoning.
Exact Answer From Edmentum Plsss
Answers
Answer:
No
Explanation:
The human body constantly develops and changes throughout the human life cycle, and food provides the fuel for those changes. The major stages of the human lifecycle include pregnancy, infancy, the toddler years, childhood, puberty, older adolescence, adulthood, middle age, and the senior years. Hope this helps you! Have a great day to whoever reads this!
Johnny finds a hunk of something. It appears to be an element. It melts at 500*C and when it was run over by a train, it flattened out. What is it likely to be? *
Metal
Nonmetal
Metalloid
Answers
Answer: Metal I'm not even sure man don't
trust me
Explanation: Metal is very hot and is heated to be made and also it is a conductor that absorbs heat. I am smart and so are you
Which has increased at about the same rate as global temperatures over the past 100 years?
A sunlight reaching Earth
B Volcanic eruptions
C Tree rings
D carbon dioxide
Please help thank you
Answers
Answer: D is the answer.
Explanation: Carbon dioxide significantly impacts the global temperature, and is partially the reason why it has been increasing over the past 100 years.
50 POINTS!
Energy is transferred into the ecosystem when
1.when bacteria absorbs nitrogen from other organisms
2. dead organisms decay and form organic matter
3. rodent prey on invertebrates
4.plants grow from the soil
Answers
Answer:
2
Explanation:
Energy is transferred between organisms in food webs from producers to consumers.
The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
Answer: between organisms in food webs from producers to consumers.
Explanation:
How is a Food Web different than a Food Chain?
Provide an example of a Food Chain.
Answers
eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.
Example: Nectar (flowers) ——> butterflies ——> small birds ——>foxes
There are three questions:
1. Which of the following statements is NOT true regarding Ambulocetus?
A. It could hear well underwater.
B. It lacked hind limbs.
C. Its teeth resemble modern whale teeth.
D. It was slow.
2. How can scientists determine whether an extinct animal gave birth on land or underwater?
A. Location of the hind limbs of the fetus
B. Position of the nostrils
C. Position of the head of the fetus
D. Location of the fossils
3. Fossils of Basilosaurus resemble that of modern whales because–
A. there are similarities in both anatomy and size.
B. they both have the exact same fossil coloring.
C. they lived during the same time period.
D. there are similarities in where the fossils were found.
Answers
Answer:
B,C,A
Explanation:
The statement that is not true regarding Ambulocetus is it lacked hind limbs. The correct option is B.
What are Ambulocetus?This cetacean ancestor was semiaquatic. It spent most of its time in the water but reproduced on land. Thewissen worries Ambulocetus natans resembled modern crocodiles in appearance and hunting style, consuming marine fish and maybe ambushing animals that wandered too near the water's edge.
It could have observed prey above water even while submerged thanks to the high, sideways-facing eyes on its head that resemble hippos.
2. Scientists can determine whether an extinct animal gave birth on land or underwater by the position of the head of the fetus.
3. Fossils of Basilosaurus resemble that of modern whales because there are similarities in both anatomy and size.
Therefore, the correct option is B, C, and A.
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How are isobars and isotherms alike?
Answers
Answer:
Isobars and isotherms are lines on weather maps which represent patterns of pressure and temperature, respectively. They show how temperature and pressure are changing over space and so help describe the large-scale weather patterns across a region in the map.
Which of the following statements is true?
A. Aspirin causes less stomach upset than salicin.
B. Aspirin does not have the same medical applications as salicin.
C. Aspirin is less effective than salicin for treating pain and fever.
Answers
Suppose you were asked to research information about a potentially dangerous synthetic food product. How would you evaluate the credibility of the sources you found?
Answers
Environmental factors (biotic and abiotic), which determine the types and number of organisms of a species in an ecosystem, are called
Answers
Answer:
limiting factors
Explanation:
They are called limiting factors, because they limit the amount of food resources and/or organism amount in an area or ecosystem.
Analyze this weather map and provide five specific dxamples of weather conditions found in this map. Use the textbox below to record your observations and number your examples. Give detail.
Answers
Answer: 1. cold fron heading south east.
2. High pressure in Arkansa.
3. warm front heading northwest from Florida.
4. Low pressure in north florida
5. Extreme heat around Texas/Oklahoma state lines
Explanation:
Answer:
Explanation:
cold fron heading south east.
2 High pressure in Arkansa.
3 warm front heading northwest from Florida.
4Low pressure in north florida
5 Extreme heat around Texas/Oklahoma state line