Which of the following substances is not an element?Iron, oxygen, water, carbon,hydrogen

Answers

Answer 1

The substance that is not an element is water, it is formed by one atom of the element oxygen and two atoms of the element hydrogen.

The rest of the substances, iron, oxygen, carbon and hydrogen, are pure elements formed by equal atoms.


Related Questions

1.90 Particles or energy given off in a nuclear reaction are called​

Answers

Answer: The answer to this would be heat and radiation

Explanation: radiation would probably be the best answer

Which one of the following statements about intracellular transport is TRUE?
a. kinesin and myosin move substances along microtubules
b. kinesin moves substances along microfilaments
c. kinesin and dynein move substances along microtubules
d. kinesin and dynein move substances along microfilaments

Answers

The true statement about the intracellular transport is option C. kinesin and dynein move substances along microtubules.

Intracellular transport is the movement of vesicles and materials within a cell. Intracellular shipping is needed for preserving homeostasis in the cellular by responding to physiological alerts.

The primary difference between intercellular and extracellular fluid is that intracellular fluid is the liquid found in the cell whereas extracellular fluid refers to all the frame fluids outdoor the cell. Intracellular transport is important for maintaining the right mobile function in maximum eukaryotic cells, with perturbations in lively shipping ensuing in several kinds of sickness.

Cytoskeleton Determines the location of Organelles inside the mobile. Intracellular shipping of molecules and organelles is liable for their delivery to vacation spot websites.

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Which of the following is not a function of the cardiovascular system?
What’s the correct answer answer asap for brainlist

Answers

Answer:

I think its b not 100% certain but its what I think it is.

Explanation:

A scientist diluted a blood sample with distilled water and waited two hours before looking at the cells under a light microscope.
The blood cells
O remained the same size since they were placed
in an isotonic solution
O gained water because they were placed in a
hypotonic solution
• gained water because they were placed in a hypertonic solution
O lost water because they were placed in a
hypotonic solution

Answers

El agua destilada y el agua de chorro son hipotónicas comparadas con la sangre. Si el glóbulo rojo se sumerge en una solución que tiene una osmolaridad menor a 0.32, el agua entra al glóbulo rojo, haciendo que éste se hinche (turgencia) y rompa si el agua que entra es considerable (proceso de hemólisis).                                                                                              ESPERO QUE TE AYUDE :)

When a blood sample is placed in distilled water for two hours. The blood cells gained water because they were placed in a hypotonic solution. Thus, the correct option for this question is B.

What is a Hypotonic solution?

A Hypotonic solution may be defined as a type of solution that possesses a lower osmotic pressure than the solution through which it is compared.  This type of solution generally has a lower solute concentration.

Distilled water significantly behaves hypotonic to the red blood cells. Due to this, the red blood cells swell, and red-colored pigment known as hemoglobin leaks from it as a cell increases its size. Due to this, the color of the solution changes into transparent red-pink.

Therefore, when a blood sample is placed in distilled water for two hours. The blood cells gained water because they were placed in a hypotonic solution. Thus, the correct option for this question is B.

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identify the choices that best complete the statement or answer the question

Answers

Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres."

1. Atmosphere

2. Biosphere

3. Hydrosphere

4. Geosphere

Based on what we learned so far from the article, what can you say about the peas we eat or purchase?

Answers

Based on the article, the color, length, and taste of peas that we eat or purchase is based on hormones and enzymes that affect the peas' development. If there is a presence of mutation, an enzyme will not be produce making the pea remain as green instead of yellow. Mutation is also the reason behind the taste of peas that are extra sweet because of the different enzyme produced. The length of peas is also based on an enzyme production. If such enzyme is not present, there is a mutation making the peas short.

Question 12
Where would you expect to find the most seismic activity (earthquakes/volcanic
eruptions)?



in the mountains

at a plate boundary

in the middle of a plate

Answers

The most seismic activity occurs in earthquakes .

Seismic waves are caused by the sudden movement of things that are present within the Earth, also considered as fault during an earthquake. Other reasons may includes Volcanic eruptions, explosions, landslides, avalanches, and even rushing rivers can also cause seismic waves.

For example The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, present at the edges of the Pacific Ocean. Mainly  two types of plate boundaries that produce volcanic activity are divergent plate boundaries and convergent plate boundaries. Divergent Plate Boundaries the tectonic plates move apart from one another.

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PARTS OF THE PLANT Write the words from the box in the correct place: transported absorb food Support sunlight (ground) reproductive organs Flower The flower contains the plant's pes Port
ed​

Answers

Answer:

Explanation:

The part of a plant that remains under the ground is the root system and the part of a plant that remains above the ground is the shoot system.

Match the following processes in respiration with their location within a cell.

Answers

The following processes in respiration with their location within a cell are: -

A. Proton moves into - Thylakoid Lumen

B. Respiration - Mitochondria

C. C3 Cycle - Stroma

D. PS I and PS II - Thylakoid Membrane

Thylakoid Membrane- The light processes of photosynthesis are carried out by a system of connected internal membranes called thylakoid membranes in a chloroplast. They are organized into stacked & unstacked sections, grana & stroma thylakoids, which are differently enriched with photosystem I & II complexes.

Mitochondria- The mitochondria, membrane-bound cell organelles, generate the majority of a chemical energy needed to power a cell's metabolic processes. The small molecule adenosine triphosphate serves as a reservoir again for chemical energy produced by mitochondria (ATP).

The given question is incomplete, find below the complete question,

Q. Match the following processes in respiration with their location of their occurrence within a cell.

A. Proton moves into  I. Mitochondria

B. Respiration                II. Thylakoid membrane

C. C3 cycle                        III. Thylakoid lumen

D. PS I and PS II            IV. Stroma

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In watermelons, the genes for green color and for short shape are dominant over their alleles for striped fruit and long shape. Suppose a plant that has genes for long striped fruit is crossed with a plant heterozygous for both these traits. What would be the phenotypic ratio of offspring from this cross?

Answers

Based on the genotype of the parents, the phenotypic ratio of the offspring is 1 : 1 : 1 : 1

What is the genotype of the parents of the cross?

The genotype refers to the sum total of the genes present in an organism.

The genotype may also refer to the sum total of the genes that an organism has for a particular trait.

The genotype of the parents of the cross of the watermelons is determined as follows:

Let the allele for green be G, and the allele for stripped will be g.

Let the allele for short shape be S, and the allele for long shape will be s

Therefore, the genotype of a plant that has genes for long-striped fruit is ggss, and the genotype of a plant heterozygous for both these traits will be GgSs

The cross will be as follows: ggss x GgSs

The offspring of the cross will be: GgSs, GgSs,GgSs, GgSs, Ggss, Ggss, Ggss, Ggss, ggSs, ggSs, ggSs, ggSs, ggss, ggss, ggss, ggss.

GgSs = green and short

Ggss = green and long

ggSs = striped and short

ggss = striped and long

The phenotypic ratio is 1 : 1 : 1 : 1

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How does running affect the human (Homo sapiens) heart rate? And is that affect negative, positive, or insignificant? (Answer Question Below)

What are the Confounding Variables?

Answers

Answer: During exercise/running, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps. Generally speaking, your heart beats both faster and stronger to increase cardiac output during exercise. It shows a positive effect. therefore, Physical activity is a confounding factor of the relation between eating frequency and body composition.

Explanation:

The density of gold is 19, 320 kg/m³ and the density of
mercury is 13, 500 kg/m³. If a cube of gold that measures
0.100 m on each side is placed in a tank of mercury and
weighed while under the surface, what is the apparent weight
of the cube?

Answers

The apparent weight of the submerged gold is 57N.

What is apparent weight?According to physics, an object's perceived weight is a characteristic that describes how heavy it is. When the force of gravity acting on an object is not counterbalanced by a force of equal but opposite normality, the apparent weight of the object will differ from the actual weight of the thing.The weight of a passenger on an elevator is one illustration. When the elevator starts to rise, the object starts to apply downward force. If a scale were used, it would be clear that the downward force is making the object heavier and changing its apparent weight.

So, the weight of mercury is 13500kg/m³ × (0.1m)³ = 13.5kg = 132.3N.

The initial weight of gold is 19320kg/m³ × (0.1m)³ = 19.35kg = 189.3N.

Then, the apparent weight of submerged gold is:189.3N - 132.3N = 57N

Therefore, the apparent weight of the submerged gold is 57N.

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What is the defining characteristics of monotreme mammals?A. They carry highly immature young in a pouchB. They develop a placenta during pregnancyC. They lay eggsD. They lactate (produce milk)

Answers

The best option would be C. They lay eggs

How do the cells of alzheimer's compare and contrast with peoples cells without Alzheimer's?

Answers

The brain of someone with alzheimers considerably smaller than the average brain of someone who is healthy, the more the disease progresses the more the brain of someone with alzheimers shrinks (can possibly shrink up to 1/3 the original size)

Aside from cell membrane, where else can you find a bilayer of lipid?

Answers

Answer: Lipid Enveloped Viruses

Explanation:

Lipid enveloped viruses contain a lipid bilayer coat that protects their genome to help facilitate entry into the new host cell.

hat is true about the relationship between cells and the organism they are part of?

Answers

The direct connection which exist between cells and the organisms they are part of is: Cells make up the basic structure of an organism, and they perform basic life functions for the organism.

The correct answer choice is option a

How is cell part of an organism?

All living organisms are composed of cells. This goes to say that just as a building is made of bricks, so also the cells are the building blocks of living organisms and part of an entire organism.

A cell is the structural and functional unit of life. There are two major types of organisms based on the numbers of cells they possess. These are:

Unicellular organismMulticellular organisms

So therefore, the relationship between cells and organisms is that the cells are the basic structure which is life wire of an organism.

Complete question:

What is true about the relationship between cells and the organisms they are part of?

a. Cells make up the basic structure of an organism, and they perform basic life functions for the organisms.

b. Cells make up the basic structure of an organism, but they do not perform basic life functions for the organisms.

c. Cells perform basic life functions for the organisms, but they do not make up the basic life structure of an organism.

d. Cells do not make up the basic structure of an organism, and they do not perform basic life functions for the organisms.

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How does budding produce more yeast?

Budding produces reproductive cells called spores.
Budding splits the DNA of yeasts in two separate cells.
Budding produces egg and sperm cells to create yeast cells.
Budding causes the cells of the yeast to split into two separate yeast cells

Answers

Budding produces more yeast by: (2) Budding splits the DNA of yeasts in two separate cells.

Budding is among the forms of asexual reproduction where only one parent is required to give rise to daughter cells and no formation of gametes occurs. In budding, a small projection comes out from the parent body which eventually grows into an adult and separates from the parent body.

Yeasts are the eukaryotic unicellular species. They belong to the kingdom fungi. There are several species of yeasts in existence. The major use of yeasts can be seen in baking and making of alcoholic beverages.

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Thirty radish seeds moistened with plain
tap water all sprouted in three days. However,
NONE of a group of thirty radish seeds
moistened with salty tap water sprouted in that
time. What is the best way to investigate whether
the salt in the water killed the second group of
seeds or just prevented them from sprouting?
A. Repeat the experiment with all new seeds
B. Repeat the experiment with new seeds, but
use a greater amount of salt in the water
C. Rinse all salt off the unsprouted seeds and
moisten them with plain tap water
D. Rinse all salt off the unsprouted seeds and
moisten them again with salt water

Answers

C your welcome …………………..

Which of the following is located inside the brainstem in between your ears
A. Hypothalamus
B. Hippocampus
C. Thalamus
D. Reticular formation

Answers

Answer:

The answer is d, Reticular formation

Have a great day!

Which of these statements best describes what scientists do?
• study things only in nature
• explain events that occur in space
• experiment to solve problems in space and the world around us
• design strong bridge architecture

Answers

Answer:  experiment to solve problems in space and the world around us

The purpose of scientists is to try and understand why things in the universe, including the earth and other bodies in space, work and behave the way they do and for what purpose.

What is an antibiotic?A. a chemical substance produced by microorganisms that helps the growth of other microorganismsB. a chemical substance produced by microorganisms that inhibits the growth of or kills other microorganismsC. a naturally occurring substance produced by microorganisms that helps the growth of other microorganismsD. a naturally occurring substance produced by microorganisms that inhibits the growth of or kills other microorganisms

Answers

Antibiotics are substances that inhibit the growth of other organisms, such as bacteria, but also our very own cells. These molecules are naturally produced by fungi and were discovered by Fleming in 1928. The answer option that better describes this is the last one: "D. a naturally occurring substance produced by microorganisms that inhibits the growth of or kills other microorganisms".

Antibiotics are substances that inhibit the growth of other organisms, such as bacteria, but also our very own cells. These molecules are naturally produced by fungi and were discovered by Fleming in 1928. The answer option that better describes this is the last one: "D. a naturally occurring substance produced by microorganisms that inhibits the growth of or kills other microorganisms".

List similarities of digestive system of human and of a frog digestive system

Answers

Frogs and humans have the same organs in its digestive system, and their functions are the same. That means that, except a few differencies, frogs and humans digestive systems are mainly the same. Both of them consists of esophagus, stomach, small intestine and large intestine, as well as the mouth. The organs work together in a similar way, digesting food since the mouth until the intestine.

The subject is Kudzu An invasive speciesReview the pic Then answer the “•”Give two predictions, in your own words, as said in the photo

Answers

Invasive species are those that have been lost to areas outside their original range and that may cause damage in their new range.

. Answer: "Plants of this ecosystem will be affected"

Explanation: invasive species such as Kuduzu can displace native species by competing for resources or habitat, which alters community structure and can result in the extinction of native species.

In the photo we can see that Kuduzu is a trailing plant that takes away the light from the plants that are below and therefore they do not survive.

.Answer: "Negative consequences are produced in the environment, leading to a loss of biodiversity"

Explanation: each species is related to the rest of the living beings. An autotrophic plant will be at the beginning of a food chain and if it is completely extinguished it will affect each link that continues. All living beings that depended on the presence of the plant will be negatively affected, decreasing their number and therefore leading to a loss of biodiversity.

5. What are two advantages of glycolysis?

Answers

Answer:  

1. it generates cellular energy

2. it can be carried throughout the cell which gives it an advantage over the TCA and oxidative cycles

In developing countries with high population rates, at which trophic level do people generally thrive?

Answers

In developing countries with high population rates, people generally thrive at a trophic level of 2.2.

Trophic levels are the positions that feed in a food chain or web. The population size diminishes as you move up the trophic levels of an environment.

Numerous consumers consume food at various trophic levels. When people eat plants like vegetables, they are the primary consumers. When they eat cows, they are incidental consumers. When they eat fillets, they are secondary consumers.

Higher trophic levels typically have fewer creatures since there is less energy there. At higher trophic levels, organisms are often greater in size, but because there are fewer of them, there is less biomass produced. The total mass of all trophic-level creatures is known as biomass.

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Round seeds are dominant over wrinkled seeds. Yellow seeds are dominant
over green seeds. Cross a round yellow seed, which is heterozygous for both
traits with a wrinkled green seed, which is homozygous for both traits. Show
your work.

Answers

Cross a round yellow seed, which is heterozygous for both traits with a wrinkled green seed, which is homozygous for both traits.

Fusion of gametes Yy (yellow seeded) and yy (green seeded)

Thus, in F1 generation the ratio of yellow seeded plants to that of green seeded plants is 50:50.This cross is called as test cross where F1 generation is crossed with recessive parent.

In other case When a homozygous yellow round seeded plant(YYRR) is crossed with another homozygous pea plant with green wrinkled seeds(yyrr). The offspring's formed in the F1 generations are heterozygous Yellow round seeds(YyRr)

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Which of the following is/are not a condition affecting the Hardy-Weinberg equilibrium?Recessive traitsGenetic driftMutationNatural selection

Answers

Hardy-Weinberg equilibrium tells that the variation in genetics present in a certain population will remain constant in the absence of any disturbing events from one generation to another. Conditions that are not affecting this principle are natural selection, genetic drift, and mutation. These forces if present in a population will affect the equilibrium which is being maintained by this principle. and will eventually lead to an evolution. Natural selection is present when the organism adapt and change. Genetic drift is present when there are variants forms of genes. Mutation is present when there are permanent changes in the DNA sequence. These processes should be absent in order to mantain the principle of Hardy-Weinberg equilibrium.

Answer - recessive traits

If your digestive system is damaged or fails, how are other body systems or the body as a whole affected?

Answers

Body systems must work together. If one system will be damaged or fails, the other systems will be affected. If the digestive system will be fail, digestion will fails. Water will not be absorb that will lead to the circulatory system to have difficulty in the consistency of blood. If there is a presence of digestive disease, there will be an interference in the digestion as well. Other organ functions will be affected, too. Several effects will be seen such as dehydration, poor absorption of nutrients, blocked blood flow, etc. If the digestive shuts down due to damage of muscles or nerves, it may cause nausea, vomiting, lack of appetite and malnutrition. The nervous and circulatory systems work with the digestive system and these systems are greatly affected if it will not work properly.

The respiratory system is affected if the digestive system fails. These two systems work together to provide power to the entire body system. If digestion fail due to overeating, it can cause abdominal bloating. Bloating can lead to shortness of breath.


A cell with an 02 concentration of 8 mM and a CO2 concentration of 5 mM is placed in a solution
of 10 mM 02 and 1 mM CO2. Describe the direction of diffusion of each gas.

Answers

As the concentration of O2 is higher in solution it moves from solution to the Cell, whereas CO2 moves from cell to solution.

Cell- As in the case of bacteria and protozoans, a single cell can be an entire organism in and of itself. In multicellular creatures like higher plants and animals, specialized cell groups are arranged into tissues and organs. Prokaryotic and eukaryotic cells are the two main subtypes of cells.

Solution- A continuous variation of a number of substances in their relative proportions up to what is known as the limit for solubility. Although mixtures of gases & solids are possible, the term "solution" is most frequently used to refer to the liquid condition of matter.

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What type of organism could have an exoskeleton?A. WormB. InvertebrateC. HumanD. Vertebrate

Answers

As we know exoskeleton is a characteristic of arthropods and other invertebrates, all vertebrates like us humans have an endoskeleton so they could not present such characteristics, finally, worms do not possess an exoskeleton, true that they are invertebrates however their phylum implies a soft body. Therefore the correct answer is option B.

the answer is b i took the quiz
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