Answer:
4
Explanation:
All statements presented are true.
Nitrogen is the main component in nucleic acids
Nitrogen is about 78% of the atmosphere
Nitrogen in the soil is the only way for plants to get nitrogen
Hope that helps
Science is the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process. Lizards with the longest legs are able to climb in order to reach high sources of food and escape the ground when floods or storms occur. Weather conditions for seven years are shown below.How might natural selection act on the lizard population if this pattern continues over time?
Solution:
Note that according to the table, the rainfall increased each year, which will endanger organisms that are above ground and cannot climb. Now, because the longer-legged lizards can climb to reach high food sources and escape from the ground when floods or storms occur, then these members of the population have better characteristics, depending on the environment they are adapted to (lots of rain ). Therefore, according to natural selection, these lizards will probably have a higher survival rate and therefore will be more likely to prevail and their genes to be inherited from generation to generation.
Which kind of signal is produced by the heart cardiacs and triceps of the arm
Answer:
Bones also protect the organs in our bodies. The skull protects the brain and forms the shape of the face. The spinal cord, a pathway for messages between the brain and the body, is protected by the backbone, or spinal column. The ribs form a cage that shelters the heart and lungs, and the pelvis helps protect the bladder, part of the intestines, and in women, the reproductive organs.
Explanation:
Bones are made up of a framework of a protein called collagen , with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it's needed by other parts of the body. The amounts of certain vitamins and minerals that you eat, especially vitamin D and calcium, directly affect how much calcium is stored in the bones.
Answer:
The heart cardiacs produces ElectroCardiogram Signals (ECG)
Triceps produce ElectroMechanical Signals
Explanation:
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What is the correct order for the levels of organization in living systems from the simplest to the most complex? (Note that not all levels of organization are included.) A elements → molecules → cells → tissues → organs B molecules → tissues → cells → organs → organisms C molecules → elements → tissues → organs → organisms D cells → organs → tissues → organisms → molecules
The major levels of organization of body, from the simplest to the most complex are atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
Many individual organisms can be organized into the following levels are cells, tissues, organs, organs systems, and organisms. There are also levels of organization above the individual organism population, community, ecosystem, biome and biosphere.
Understanding the classification of these levels, provides context to the complexity of the human organism. The simplest level of organization is the chemical level of organization. At this level, simple atoms combine to form relatively simple molecules.
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2. A student conducts several tests of reaction time, resulting in the histogram below. What can be inferred from the histogram?
OA. The sight data has a greater mean and a larger standard deviation than the sound data.
OB. The sight data has a greater mean and a smaller standard deviation than the sound data.
OC. The sight data has a lower mean and a larger standard deviation than the sound data.
O D. The sight data has a lower mean and a smaller standard deviation than the sound data.
The sight data has a greater mean and a smaller standard deviation than the sound data.
The correct option is B.
What is histogram?The histogram is one often used graphing tool. It is used to display summaries of either discrete or continuous data that have been intermission. It is widely applied to easily represent the key features of the distribution of data.
What diagram has a histogram in it?A graph called a histogram uses squares to show how frequently numerical data occurs. The width of a rectangle (the vertical axis) indicates the distribution frequency of the a variable (the amount, or how often that variable appears).
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Whick of the following is the best tittle for this passage ?
The life of a blind person is the best title for this passage.
The text describes a blind person's life. It says nothing about the person's desire to see the world or their dread of going blind. There are no issues related to the doctors in the text, hence it cannot be a biography because it does not go into detail about Mary's life history.
Aside from navigation, blind persons can carry out nearly all of the daily tasks performed by sighted people. They are independent and capable of cooking and doing makeup. With the use of accessible products or technologies and their own willpower, blind people can live independent lives.
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Albedo is the reflectivity of a surface. Surfaces that are very reflective, have high albedo. Which BEST describes the historical albedo of the earth?
A. More than 50 percent
B. Less than 50 percent
C. Exactly 100 percent
D. Exactly o percent
The correct answer is option B.
When the light hits the Earth, a particular amount of light is reflected back. This reflected rays of light is called albedo.
There are few places through which the light gets reflected and these are the lighter places.
The surface that reflects the most are lighter places like ice and the places that doesn't reflect are the dark places like soil.
The best historical albedo was seen in 1970s. During that period, the reflection was high and also during winters the amount of ice formation was also good.
After that due to the global warming, the percentage went down. Albedo is the reflecting light and if the light isn't trapped then the temperature tends to come down. We can say, the higher the albedo of the surface, the cooler will be the surroundings.
The best percentage of albedo in 1970s was around 30% which was historical albedo of the Earth.
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Which of the following is a health effect of air pollution?
A. cholera
B. lung damage
C. roseola
D. influenza
Answer:
it has to be lung damage trust ne
What is the process where the mitochondria converts chemical energy into food stored into compounds?
Is it cellular respiration or oxidative phosphorylation?
Answer:
oxidative phosphorylation
Explanation:
Question: Are there any cells we can see with our unaided eyes? Write a Claim: Evidence:Reasoning:
There are many cells we can see with our unaided eyes in the ovum.
The human eye can see objects as small as 100 microns. Objects below 100 microns cannot be seen with the eye. Cells in our bodies are 10 microns in size and cannot be seen with the eye. Eggs, like single cells, can be seen without a microscope. In all mammals, the egg is the only cell visible to the human eye.
Cells are so small that they are usually invisible to the eye. As we age, the vitreous jelly-like substance in the eye liquefies and shrinks. When this happens, the microscopic collagen fibers within the vitreous tend to clump together. This scattered debris cast small shadows on the retina. The smallest object visible to the human eye is approximately 0.1 mm in length.
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Earth has major land biomes.
Yes earth has major earth biomes.
What is earth biomes?
biomes . A biomes is an area classified according to the species that live in that location. Temperature range, soil type and the amount of light and water and are unique to a particular of the place and form the niches are for the specific species allowing scientists to define the biomes .
There are five major types of biomes aquatic, grassland, forest, desert, and tundra, though some of these are biomes can be further the divided into more specific categories, such are the e.g like - freshwater, marine, savanna, tropical rainforest, temperate rainforest, and the taiga. Aquatic biomes and include both freshwater and marine biomes.
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What is the correct steps involved in the process of making a protein?
The steps for protein synthesis are:
-Unziping
-Transcription
-Translation
-Elogation
-Termination
1) Unziping: DNA double strand unwinds to expose a sequence of nitrogenous bases (4 the base pairs along a length of DNA separate, exposing binding sites of the bases);
2) Transcription: A copy of the DNA strand is made creating a RNA strand (1 RNA bases bind to DNA bases);
3) The exit of the mRNA made up in the second step to the cytoplasm (5 An RNA copy of the gene leaves the nucleus);
4) Translation: (2 amino acids are brought to the RNA, the mRNA and the tRNA meet to translate the nitrogeneous bases in amino acids);
5) Elogation and Termination: (3 The amino acid string folds and form a protein) the protein information from the mRNA, translated with the help of the tRNA is used for the protein synthesis in the cells cytoplasm.
Therefore, the final order for the question is: 4-1-5-2-3
Why might it not always be possible to determine the reactants and the products in a reaction? Explain your answer in terms of chemical equilibrium.
It might not be possible to always determine the reactants and products in reactions because reactants can be products just as products can be reactants in some reactions.
What are reversible reactions?Reversible reactions are reactions that proceed in both forward and backward directions.
The forward reaction is for the synthesis of products while the backward reaction synthesizes the reactant back as they are known in non-reversible reactions.
For example, consider this reaction: [tex]A + B < --- > C + D[/tex]
In the forward reaction, A and B are acting as the reactant while C and D are the products. In the backward reaction, C and D are the reactants while A and B are the product.
In reversible reactions, the forward reaction proceeds, but as soon as products are formed on the other side, both forward and backward reactions occur simultaneously, although at an unequal rate.
Reaction continues until a chemical equilibrium is reached. Both the forward and backward reaction proceeds at an equal rate.
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Plant cells, unlike human cells, have rigid "cell walls" that contain the rest of the cell components. What are cell walls analogous to in the human body?
membranes
cytoplasm
blastiopores
mitochondria
12. Use a model to explain how matter changes during
biochemical reactions like photosynthesis and respiratio
In the process of photosynthesis, oxygen and glucose are produced from water and carbon dioxide. As a consequence of consuming glucose, the plant creates oxygen. Oxygen and glucose are transformed into water and carbon dioxide during cellular respiration. By-products of the process include carbon dioxide, water, and ATP, which is turned into energy.
What are Cellular Respiration and Photosynthesis?Commonly used notation for photosynthesis is: 6CO2 + 6H2O C6H12O6 + 6O2. This means that the products, a sugar molecule and six oxygen molecules, are produced when light energy, which is harvested as chemical energy during photosynthesis, is converted from the reactants, six carbon dioxide molecules and six water molecules, into a sugar molecule and six oxygen molecules. The byproduct is the emission of oxygen. In the process of breaking down glucose during cellular respiration, oxygen is consumed, which also produces heat and chemical energy.To learn more about Photosynthesis and Cellular Respiration refer to:
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Standard NCES.7.L.2.1-In which process do animals make reproductive cells?
Group of answer choices
meiosis
homeostasis
protein synthesis
cellular respiration
Answer:
cellular respiration because when we give birth our reproduction cells reart
What’s the correct answer answer asap for brainlist
Answer:
c
Explanation:
Answer:
c
Explanation:
none of those other things affect the air
Which of the following correctly describes the development of Earth's atmosphere?
A Hydrogen and nitrogen gas, oxygen formed, hydrosphere forms, ozone layer formed
B Hydrogen and helium gas, hydrosphere forms, oxygen formed, ozone layer forms
C Hydrogen and helium gas, hydrosphere forms, ozone layer forms, oxygen formed
D Hydrosphere forms, oxygen formed, ozone layer forms, hydrogen and helium gas
The answer is A because oxygen Hydrogen and Nitrogen are what are in the atmosphere
Which of the following is a way that
bacteria play an integral role in
ecosystems?
O
the make up most of the food that we eat
they act as decomposers to break down
organic matter
they spread disease across ecosystems
is RNA that copies the coded message from the DNA inthe nucleus and carries the message into the cytoplam
The messenger RNA (mRNA) is the one responsible for copying the coded message from the DNA present in the nucleus and move it to the cyto
Which element can form multiple strong bonds with other atoms and makes
up the backbone of most biomolecules?
A. Carbon
B. Oxygen
C. Nitrogen
D. Hydrogen
Answer:
A. Carbon
Explanation:
Because all macromolecules consist of carbon. For example CHO for carbon, hydrogen, and oxygen. CHONP for the macromolecule Nucleic Acids which is also considered DNA consists of carbon. hydrogen. oxygen, nitrogen, and prosperous.
I hope this helped!!
What is the difference between basidium and paraphrase?
Basidium is a microscopic sporangium found in the ascospore of the fruiting body of Basidiomycetes, also known as the tertiary mycelium, which developed from the secondary mycelium. The tertiary mycelium is the highly coiled secondary mycelium.
The presence of a basidiomycete is one of the most important features of basidiomycetes. Basidium usually has four called basidiospores but can have two or eight. In typical basidia, each basidiospore is born at the tip of a thin prong or horn called a sterigma and is forced out upon maturity.
The basidium genius serves as the site of nuclear fusion and meiosis the function at which gametes fuse exchange nuclear material, and divide to reproduce basidiospores. The fungi of the phylum Basidiomycota are easily recognized under the light microscope by the swollen end cells of the hyphae, club-shaped fruiting bodies called singular. Basidium-producing structures are formed by the fusion of two vegetative/somatic cells of different lineages or genotypes.
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A football player kicks a ball with a mass of 0.42 kg. The average acceleration of the football was 14.8 m/s².
How much force did the kicker supply to the football?
The kicker supply to the football is 6.22 N.
Solution:
F = m*a - A
F = Force = ?
m = mass = 0.42 kg
a = acceleration = 14.8 m/[tex]s^{2}[/tex]
Plug the values in equation A:
F = 0.42 * 14.8
F = 6.216 N
F = 6.22N.
An NFL kicker's foot average force during a kick is about 450 pounds 2002 N and the ball can even deform on contact so kicking is a large power imbalance. A soccer ball is kicked with the power of the leg muscles. Therefore, the forces exerted are muscle forces. Strength is the force produced by using a body part such as an arm or leg. Since there is contact between surfaces, it is the contact force created by muscle activity. This phenomenon is commonly seen in soccer games when a player tries to catch a ball that has been thrown into the air.
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I added a picture of my question :) also thank you so much for being able to help me I really appreciate it.
Molecules (DNA) < Organelles (Mitochondria) < Cells (nerve cell) < Tissues (nervous tissue) < Organs (Brain) < Organ systems (Nervous system)
Name ONE Australian plant and ONE viral or fungal pathogen that invades this plant.
Describe how the plant named responds to the pathogen
Answer:
Common Name: Potato Plant; Scientific Name: Ipomoea costata
Fungal Pathogen: Phytophthora Infestans
Explanation:
Late Blight (or Potato Blight).
The specific response of potato plant is that their pattern recognition receptors can recognize beta-glucans that is present on the phytophthora infestans’ cell wall.
This is physical science
Pressure and Pascal's Problems
1. A bronze statue weighs 2400 N. It's base is about 2m². What is the pressure the statue
exerts on the floor?
(P=FA P = F A) Pressure is equal to force divided by area. The equation demonstrates that whereas area and pressure are inversely related, respectively, to force. Pressure grows at a constant area as the size of the force exerted grows as well.
Pressure (p=F/A) is the force applied divided by the area perpendicular to the plane on which it is applied.
Explanation:
Force x Area= Equals Pressure
P = 2400 / 2
P = 1200 Nm^-2
Answer:
1200 pa
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What’s the correct answer answer asap for brainlist nobody will help me or answer
The water cycle is grouped as biogeochemical cycle. The water cycle is often taught as a simple circular cycle of evaporation, condensation, and precipitation.
Why is water cycle a biogeochemical cycles?Water and components like carbon and nitrogen are recycled, whereas energy moves through an ecosystem. The environment is continually recycling nutrients and water. A biogeochemical cycle is the term used to describe the continuous recycling of a chemical element or water within an ecosystem. Both living creatures (biotic components) and nonliving objects (abiotic elements) in the ecosystem are involved in this recycling process. Water and other chemical elements are continuously transferred through living things to non-living things and back again through biogeochemical cycles. The water cycle, carbon cycle, and nitrogen cycle are three significant biogeochemical cycles.
The biogeochemical cycle that recycles water is the water cycle.
What is biogeochemical cycle?Any of the natural processes by which the fundamental components of biological stuff are transferred. The phrase "biogeochemical" is an acronym for the idea of taking each cycle's biological, geological, and chemical components into account.
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Why will the loss of photosynthetic organisms eventually cause a problem for animals ?
Approximately 30 - 32 molecules of ATP are produced from the complete oxidation of one molecule ofglucose (C6H12O6) in aerobic cellular respiration. Explain reasons why the number of ATP is not knownexactly
One glucose molecule produces 4 ATP, 2 NADH, and 2 pyruvate molecules during glycolysis. Although 4 ATP molecules are produces in the second half, the net gain of glycosis is only 2 ATP because 2 ATP molecules are used in the first half of glycolysis. If the cell cannot catabolize the pyruvate molecules further via the citric acid cycle, it will harvest only 2 ATP molecules from one molecule of glucose.
Glycolysis is the sole source of ATP. If glycolysis is disrupted, the RBC fail their ability to control their Na-K pumps that need ATP to function, and eventually, they die. If the second half of glycolysis slows or stops in the absence of NAD+ or when NAD+ is unavailable, RBC will not produce a sufficient number of ATP in order to survive.
The number of ATP has been estimated between 35 to 30. The total number of ATP is not known exactly due to variance in the degree of coupling between the flow of protons through the ATPase and electron transport ATP which is the energy currency of the cell.
What reflects the primary routes of exposure to bloodborne pathogens?
Answer:needlestick injuries
Explanation:
Blood borne pathogens are the infectious microorganisms inside human blood that cause disease in humans. The primary route is mucous membranes and the fluids through the body.
What is mucous membrane ?The moist, inner lining of some organs' body cavities such as internal organs . Glands of the mucous membrane have mucus also called mucosa.
For a blood borne pathogen to spread, the bodily fluids of an infected person must enter into the bloodstream of another person. The most important agent of transmission in the workplace is when an infected person's blood enters another person's bloodstream through an open wound.
Unprotected openings of skin. Blood borne pathogens can be transmitted through cuts, scrapes, or any other open wounds. Mucous membranes and Penetration of skin.
Blood borne diseases should be clearly checked if there is any kind of pathogenic results or the outcomes happening in the blood.
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what animals have long lifespan and why
One of the features that can make an animal to have a long lifespan is the size, due to the protection conferred by its size. Also, some animals like the elephant and the whale, have a slow cell replication rate, what reduces the risk of cancer, because the less they replicate, the fewer mutations can be caused.
Moreover, many animals have developted many ways of protecting themselves from mutations, such as having several copies of an important gene.
A list of some animals with long lifespan:
- Bowhead whale: potentially 200+ years old.
- Rougheye rockfish: 200+ years old.
- Freshwater pearl mussel: 250+ years old.
- Greenland shark: 272+ years old.
- Tubeworm: 300+ years old.
- Glass sponge: 10,000+ years old.
- Hydra: also potentially immortal.
