The three important features proposed by Watson and Crick are as follows:
a phosphate groupa deoxyribose sugara single nitrogen-containing baseHow is the structure of DNA formed?DNA is a biological molecule that stores genetic information in living cells.
The structure of these DNA molecule was built and proposed by a duo scientist named James Watson and Francis Crick in the 1950s.
However, they determined three important features of the DNA molecule and are as follows:
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A taxon that includes a single common ancestor and all its descendants is a _____ group.
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monophyleticWhy do viruses only infect specific types of cells?.
The circulatory system helps maintian homeostasis by interacting with the
Answer:
Blood vessels
Explanation:
Why are scientific observations important?
1. Every experiment uses quantitative observations.
2. Every experiment begins with observations.
3. Every experiment ends with observations.
4. Every experiment uses qualitative observations.
Scientific observations are important as all scientific experiments begin with observations hence option 2 is the correct option.
Why are scientific observations important?Scientific observations are used by scientists to collect and record data, which allows them to put forth and test certain hypotheses and theories.
Scientific observations are done in many ways – by human senses or with machines and tools like microscopes, digital scanners or amplifiers to enhance their vision or hearing.
Observations make what scientists call data and they inspire, support or deny a scientific theory or hypothesis.
Hence, Scientific observations are important as all scientific experiments begin with observations hence option 2 is the correct option.
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Answer:
every experiment begins with obeservation
Explanation:
Pernicious anemia is most common in older people. Which choice lists the correct relationships among the factors that cause this disorder?
Pernicious anemia is most common in older people as The reduced secretion of intrinsic factor means that vitamin B12 cannot be absorbed, and macrocytes are produced instead of erythrocytes.
What is Pernicious anemia?Pernicious anaemia is the maximum not unusualplace motive of nutrition B12 deficiency. Pernicious anaemia is an autoimmune circumstance that influences your belly. An autoimmune circumstance manner your immune device, the body's herbal defence device that protects towards contamination and infection, assaults your body's healthful cells.
As human beings get older, their cappotential to take in nutrition B12 decreases. This is due to the fact ageing adults regularly broaden issues with the acids and belly enzymes had to method the nutrition.
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Practice 2: which answer best describes another function of the
cell membrane?
a. the cell membrane helps to protect only plant cells from larger
molecules
b. the selective barrier allows small molecules to enter and exit in animal and plant cells
c. animals cells have as thick cell membrane to keep the cells rigid
d. the cell membrane keeps material from entering and exiting the cell
Answer:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Explanation:
How the dorsal/ventral pattern is initially established in drosophila development
The dorsal/ventral pattern is initially established in drosophila development by the gradient of a transcription factor called dorsal protein.
What do you mean by Dorsal protein?Dorsal proteins are synthesized after fertilization, when dorsal is translated, it forms a complex with a protein known as cactus in the cytoplasm.
The dorsal/ventral axis in the Drosophila is determined by morphogenesis which is established by 12 maternal effect genes along with the dorsal and cactus.
Therefore, the dorsal/ventral pattern is initially established in drosophila development by the gradient of a transcription factor called dorsal protein.
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What is the desired temperature for incubation?
Answer:
the desired temperature for incubation is between 99° and 100°F.
List three different ways that bacteria are helpful to human
Answer:
Creating products, such as ethanol and enzymes.
Making drugs, such as antibiotics and vaccines.
Making biogas, such as methane.
Cleaning up oil spills and toxic wastes.
Killing plant pests.
Transferring normal genes to human cells in gene therapy.
Explanation:
Answer: Heyaa! ~
1. Help digest food
2. Makes vitamins
3. Cleaning up oil spills and toxic wastes.
Hopefully this helps you!
-Matthew ^^
What do you call the system that categorizes organisms by using a naming system that includes the genus and species?.
Answer:
binomial system of nomenclature ....
Answer:
Binomial Naming System.
Explanation:
Scientists name animals and plants using the system that describes the genus and species of the organism. so they came up with the name "Binomial Naming System"
According to the theory of evolution by natural selection, which of these statements is correct?
A. Structures and behaviors evolve at the individual level.
B. Structures and behaviors evolve at the population level.
C. Structures evolve at the individual level, but behaviors evolve at the population level.
D. Structures evolve at the population level, but behaviors evolve at the individual level.
Where on the chromosome is the “purple eye” gene located?
Answer:
Chromosome 2
Explanation: Have any amazing day!
When you use electricity in your home, which resources are powering it? Research the energy resources used to power your state’s electrical grid (that’s what supplies your home with electricity). In the space below or on a separate sheet of paper, create an informative handout to provide to the people of your state.
Include the following information in your handout:
• Which state do you live in?
• What is the population of your state?
• What percent of the electricity in your state comes from
nonrenewable resources?
• What percent of the electricity in your state comes from
renewable resources?
• What percent of the electricity in your state comes from
nuclear energy?
• Which renewable resource is used the most in your state?
• What is an interesting fact about energy usage in your state?
Answer:
Comment which state you live in an I'll be able to help
Explanation:
The graphs show two types of
growth patterns. Which of the
growth curves best explains the sea
otter population growth?
Answer:
Where are the graphs?
Explanation:
The question is directing you to look at two graphs and compare them. Without the graphs this question cannot be answered.
Which statement accurately describes the tissues indicated by the line in the microscopic image?
The connective tissues that protect the inside of arteries and veins
The epithelial cells on the inside of arteries and veins
The smooth muscle on the outside of arteries and veins
Sponges possess feeding cells and structural parts that are called.
Answer:
choanocytes (“collar cells”).
Explanation:
The structure of a choanocyte is critical to its function, which is to generate a directed water current through the sponge and to trap and ingest microscopic food particles by phagocytosis.
Geological Distribution- definition
Answer:
the natural arrangement and apportionment of the various forms of animals and plants in the different regions and localities of the earth.
Explanation:
hope this helped
Answer:
the natural arrangement and apportionment of the various forms of animals and plants in the different regions and locations of the earth.
Explanation:
you can search it up
True or False In addition to earth, many of the other planets in the solar system have atmospheres.
Answer:
true
Explanation:
however this is true the atmosphere cannot support any human life because of its content
Answer: True, some others planets too have an atmosphere.
Explanation:
Yes, it is true. Some other planets such as Mars, Jupiter, Saturn have atmospheres.
What does Tay-Sachs disease cause?
A. the inability to breakdown fatty tissues around the brain and effects the brain's abilities
B. the wrong shape of hemoglobin and therefore less oxygen in the body
C. a thick layer of mucus in the respiratory tract and struggle to digest food
D. a decreased mental ability and uncontrollable movements
Answer:
A.
Explanation:
It's caused by the absence of an enzyme that helps break down fatty substances. These fatty substances, called gangliosides, build up to toxic levels in the brain and spinal cord and affect the function of the nerve cells
Taxonomy is the type of classification that names and identifies different organisms primarily by their
Explanation:
taxonomy is the scientific study of naming, defining and classifying groups of biological organisms based on shared characteristics.
Which of the following is something you should do after severe weather occurs?
Clean up flood waters.
Cleaning up will always be the step after the storm. Assuming they're talking about a hurricane, then the flood waters would need to be cleaned up. Besides for the last choice (which is utterly ridiculous!), those should be before and during the storm.
Depending on where you live and what kind of sever weather you encounter, a safety plan for you and your family is a must. You should always know where you can go to be safe from the elements and what to do during severe weather.
During the storm, stay away from windows. This pertains to all weather, including those with wind and lightning. Wind could blow debris that could possibly shatter glass and hurt you or others. With lightning, if it strikes the window, it will shatter it, merely from the heat of the contact.
46. Yawning may be caused by
A. high oxygen concentration in the blood.
B. high lactic acid concentration in the blood.
C. high carbon dioxide concentration in the blood.
D. high urea concentration in the blood.
Which bond type shares electrons
between the atoms?
A. ionic bond
B. covalent bond
C. proton bond
D. neutron bond
Order the steps of the hydropower plant below.
Answer:
water flows through a pipe, or penstock, then pushes against and turns blades in a turbine to spin a generator to produce electricity.
Answer:
Explanation:
ANSWER: water flows through a pipe, or A penstock, then pushes against and turns blades in a turbine to spin a generator to produce electricity.
can anyone help with this??
Answer:
50%
Explanation:
Dd Dd dd dd
25% + 25%
Select the correct answer.
Historically, the earth's ocean had a pH of 8.2. In recent years, it has dropped to 8.1. How might this change affect the ocean environment?
OA. The skeletons of coral will become soft due to increased acidity.
OB. The rise in alkalinity will make the ocean unfit for certain ocean plants.
Oc At 8.1, the ocean has reached neutral pH, making it identical to pure water.
OD. The ocean's CO2 content will decrease, improving the environment for animals.
The effect of this change of pH value in the ocean environment will be experienced by: (A). The skeletons of coral will become soft due to increased acidity
Meaning of pH value
pH value can be defined as the values that tells us how acidic or basic a mixture is.
pH is the measure of how acidic or how basic water is.
pH values ranges from 1-14, and each has its own significance. number 7 stands for the neutral point.
In conclusion, The effect of this change of pH value in the ocean environment will be experienced by: The skeletons of coral will become soft due to increased acidity
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Why is the sustainability of water for the future generations to come so important
Answer:
The sustainability of water for future generations is important because water is the source of life, the substance that enables all living things to survive and develop. Water is at the core of sustainable development and is critical for socio-economic development, healthy ecosystems, and for human survival itself. It is vital for reducing the global burden of disease and improving the health, welfare, and productivity of populations. Therefore, water must be sustained for future generations in order to protect and preserve the environment and to move towards a sustainable development model.
Explanation:
I hope this helps!
IANADADisdfiodpcamscayduaefasiouoias.
Answer:
The producers (plants) would be greatest in number and the tertiary consumers (carnivores) would be least in number. Because energy available to higher trophic levels decrease as we go higher.
HELP! Me!
Peppered moths live on lightly colored trees, lay around 100 eggs and don’t live longer than a year. How does that help them adapt and survive?
Answer:
They camouflage
Explanation:
The peppered moths adapt to their surroundings. They blend in with their surroundings to avoid being eaten by their predators. Blending in with their surrounding also helps them to sneak up on and catch their prey.
I'm not too sure why they lay 100 eggs at a time but i think it's because the parents want to increase the survival of their eggs. Eggs sometimes are eaten by other animals and the parents want at least a few to survive.
The sides of the dna molecule are made up of repeating nitrogen bases and sugars.
Answer:
BRAINLY
ME p l z
Explanation:
T or F - The sides of the DNA molecule are made up of repeating nitrogen bases and sugars. T or F - The letters that make up the DNA molecule code for genes. T or F - Replication results in two strands of DNA, each of which has half of the original strand.
