Answer:
microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants). More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.
which part of the bone is a hollow cylinder that makes the bone strong
Explanation: diaphysis
what human activities have thrown the carbon cycle off balance?
Answer:
burning fossil fuels
Explanation:
As people burns fossils fuel, the carbon cycle is obstructed and the atmospheric conditions tempered with
Which statement describes a positive effect of selective breeding?
Answer:
desirable traits are passed down into future generations
Explanation:
Cellular respiration in plants does not require atmospheric oxygen because
Answer:
Oxygen produced during light reaction of photosynthesis is partially consumed during cellular respiration by plants and unconsumed oxygen is released in atmosphere. Thus plants produce oxygen in presence of light.
Answer:
it uses the oxygen generated in photosynethesis
Explanation:
Please help me
will give the brainliest!
Please answer correctly
the thick mucus secreted by the tissues lining the respiratory passages is known as
¿De qué manera comprobarías el funcionamiento del filtrador de agua?
Answer:
La forma más eficaz de determinar si su filtro de agua funciona correctamente es analizar el agua antes y después de que pase por el filtro.
please solve fast in 5 min
Answer:
(C)
Explanation:
answer"A" can be cancelled as prokaryotic cells don't possess a nucleus.
answer"B" can be cancelled as animal cells don't have cell walls.
answer"D" can be cancelled if you know the cell theory.
The movement of water across a cell membrane that does not require
energy is called what?
Which of these claims is true of Venus?
A. Venus has two moons.
B. On Venus, a day is longer than a year.
C. Venus is the fourth planet from the sun.
D. The atmosphere of Venus is capable of supporting life.
Answer:
B.) On Venus, a day is longer than a year, is the answer to your question. I hope this helps.
Answer:
b
Explanation:
took the test
to stimulate muscle contraction acetylcholine is released from the
Answer:
motor neuron
Explanation:
what happens when air masses of different temperatures meet?
Answer: When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. ... Winds are common at a front. The greater the temperature difference between the two air masses, the stronger the winds will be.
Explanation:
Astrology is pseudoscience. What can you conclude about the claims made by astrology? A. They are based off of critical thinking. B. They are based on unscientific methods. C. They are based on repeated evaluation. D. They are based on logical reasoning.
Answer:
B
Explanation:
Astrology has not demonstrated its effectiveness in controlled studies and has no scientific validity.
the red blood cells and brain are two body tissues that derive most of their energy from
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The red blood cells and brain are two body tissues that derive most of their energy from glucose.
Glucose is the answer.
The red blood cells and brain are two body tissues that derive most of their energy from carbohydrates. The correct option is C.
What are carbohydrates?Sugar molecules make up carbohydrates, or carbs. Carbohydrates are one of the three primary nutrients included in foods and beverages, along with proteins and fats.
Glucose is created by your body's breakdown of carbs. The primary source of energy for the cells, tissues, and organs in your body is glucose, sometimes known as blood sugar.
Under normal conditions, glucose serves as the brain's main energy source.
Using either glycolysis or oxidative phosphorylation—the latter of which is 15 times more efficient—glucose is used to create energy in the form of adenosine triphosphate (ATP).
In the absence of glucose, the brain has backup energy sources, such as ketones created by fatty acid metabolism, which predominantly takes place in the liver.
These include 3-hydroxybutyrate, acetone, and acetoacetate (3BHM).
Thus, the correct option is C.
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Your question seems incomplete, the missing options are:
fat
protein.
carbohydrate.
iron.
where in eukaryotic cells does the calvin cycle take place?
Answer:
chloroplasts
The two parts of photosynthesis—the light-dependent reactions and the Calvin cycle—have been described, as they take place in chloroplasts.
Explanation:
How is cross pollination carried out in nature?
A, B, or C?
OPTION B is the correct answer
Cross-pollination is carried out by bees and other pollinators, which is present in option B, as cross-pollination is a process in which pollen from the male reproductive organs of a plant (such as the stamen) is transferred to the female reproductive organs.
Cross-pollination is facilitated by various agents, including insects, birds, wind, and even water. These agents inadvertently carry pollen from one plant to another as they move between flowers or plants. Insect pollinators, such as bees, butterflies, and beetles, are the most common and efficient carriers of pollen in cross-pollination. They visit flowers to obtain nectar or pollen as a food source, and in the process, pollen grains get attached to their bodies and are transported to other flowers.
Learn more about cross-pollination here.
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How are a hypothesis and a theory similar?
Answer:
A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors.
The tail of a comet always points towards the sun true or false
Segments of DNA transferred from parent to offspring are called
Answer: Genes
Explanation:
A covalent bond forms due to _____.
a. Sharing of electrons
b. Transfer of electrons
c. Losing or gaining electrons
d. All of the above
Which of the following is correct?
Insulin is a protein, and the monomers of
proteins are fatty acids.
Insulin is a protein, and the monomers of
proteins are nucleotides
Insulin is a protein and the monomers of
proteins are glucose,
Insulin is a protein and the monomers of
proteins are amino acid
Answer:
Insulin is a protein and the monomers of
proteins are amino acid
Explanation:
A. Identify what parameters are not within normal ranges.
Answer:
A normal range is the restricted set of values that is optimally healthful and stable.
A reference range is usually defined as the set of values 95 percent of the normal population falls within (that is, 95% prediction interval). It is determined by collecting data from vast numbers of laboratory tests.
Poly sheets with ultraviolet light inhibitors last 10 to 12 years before they need
to be replaced
Answer:
Plastic is mostly decomposed by UV radiation, and it takes two years to more than 1 million years to decompose it. While many pure plastics cannot absorb UV radiation, the presence of catalyst residues and other impurities will often act as receptors
Explanation:
Hope this helps my G.
How does pH affect plant growth?
Answer:
Soil pH directly affects the life and growth of plants because it affects the availability of all plant nutrients. Between pH 6.0 and 6.5, most plant nutrients are in their most available state. A nutrient must be soluble and remain soluble long enough to successfully travel through the soil solution into the roots.
Use the graph below to determine the range of values in which the LD50 of this pollutant lies. Dose-response curve shows twenty percent of the population died when exposed to thirty-eight milligrams of pollutant A per kilogram of water. Forty percent of the population died when exposed to forty-two milligrams of pollutant A per kilogram of water. Sixty percent of the population died when exposed to fifty-five milligrams of pollutant A per kilogram of water. Eighty percent of the population died when exposed to sixty milligrams of pollutant A per kilogram of water. One hundred percent of the population died when exposed to one hundred milligrams of pollutant A per kilogram of water.
Between 0 and 20 mg/kg
Between 20 and 40 mg/kg
Between 40 and 60 mg/kg
Between 60 and 80 mg/kg
Answer:
The answer is C, Between 40 and 60 mg/kg
Explanation:
I just took the test and it was right :)
__________________________ a. A laboratory in a major university surveys all the reactions involving bromine. __________________________ b. A pharmaceutical company explores a disease in order to produce a better medicine. __________________________ c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. __________________________ d. A pharmaceutical company discovers a more efficient method of producing a drug. __________________________ e. A chemical company develops a new biodegradable plastic. __________________________ f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system.
Basic research generates basic knowledge. Applied research solves practical problems. Technological development provides tools and artifacts for research. A: basic research. B, C, F: applied knowdelge. B, D, E: technological development.
----------------------------------------
Let us first review some framework.
Basic research is directed to understand fundamental problems or issues. It is about generating basic knowledge. It constitutes the theoretical basis of knowledge on which applied science or technology is based.Applied research makes use of the knowledge generated by basic science to solve practical problems. It generates knowledge that has practical use.
Technological development is one of the main tools of science. Its main function is to create useful tools and artifacts to facilitate the scientist's work.
Now let us classify each item.
a. A laboratory in a major university surveys all the reactions involving bromine. BASIC RESEARCH
b. A pharmaceutical company explores a disease in order to produce a better medicine. APPLIED RESEARCH and TECHNOLOGICAL DEVELOPMENT
c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. APPLIED RESEARCH
d. A pharmaceutical company discovers a more efficient method of producing a drug. TECHNOLOGICAL DEVELOPMENT
e. A chemical company develops a new biodegradable plastic. TECHNOLOGICAL DEVELOPMENT
f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system. APPLIED RESEARCH
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Which two statements describe force?
A. Force causes an object's motion to remain constant.
B. A force can have mass or weight.
C. Force is the ability to change an object's motion.
D. A force can be a push or a pull.
Answer:
D. a force can be a push or a pull and A.
viruses are not considered living organisms because they are not composed of:
Answer:
Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things
Explanation:
Answer:Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.
Why is the sequence of amino acids important to protein function?
Multiple choice question.
A)
The sequence of amino acids doesn't have an effect.
B)
The order of amino acids determines the shape a protein will take.
C)
The order of the amino acids can be read like a code to assemble DNA.
D)
Amino acids can only be combined in a specific order, otherwise the bonds will fall apart.
Answer:
b
Explanation:
mutations in an amino acid sequence affect the function of its protein
how is a microscopes total magnification calculated
Answer:
rtr greggryrwufwffvtyfjggakakakakakrfckvwtnhurtehjnsgberwghebhj
Explanation:
