Propane is burned to provide the heat in many cooking grills. The chemical
reaction for this process is shown in the equation below.
C3H8 +502 → 3 CO2 + 4H2O + energy
What are the products in this chemical reaction?
A. C3H8 +502
B. 4H₂0 +502
C. 3C0₂ + 4H₂O + energy
D. C3H3 +3CO2 + energy
Answer: it's 3CO2+4H2O+Energy
Propane is a linear alkane of formula C3H8. It is mainly used as fuel (this is the main component of liquefied petroleum gas) in cooking and chemical industry reactions.
The reaction of its complete combustion by the presence of oxygen is:
C3H8 (gas) + 5O2 ==> 3 CO2 + 4H2O + energy (2220⋅kJ)
As we can see, propane can release carbon dioxide and water as every combustion reaction, and a lot of energy in the form of heat.
which type of cells are spherical and contain energy molecules?
The type of cells that are spherical and contain energy molecules are fat cells
What is a fat cell?A fat cell is a connective cell in the body that is spherical in shape that is use to store and produce energy, fatty acids and help to store fat. Fat cells are a form of connective tissues in the body that generate ATP and also store fat in adipose tissue.
Therefore, The type of cells that are spherical and contain energy molecules are fat cells
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A husband and wife have two sons. One boy has a straight thumb, while the other has a bent thumb. What causes this difference?
Help me anyone, please !!!!
When a person needs transfusion, the link on compatibility (option A) is most apt.
What is genotype?The genotype of an individual is the number of genes that the individual possess.
Using the Mendel crossing, we can see that if the parents are AB and AO one offspring will have type A blood.
If we look at the chart, we can see that the blood type A and B are both codominant and are dominant over O hence option K is correct.
When a person needs transfusion, the link on compatibility (option A) is most apt.
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4. One student designed an experiment with sugar, water, and sand. The steps of the experiment are shown below.
• Make a thumb size hole at the bottom of an 18 oz styrofoam cup.
• Roll a piece of paper into a tube and place it in the middle of the cup over the hole.
• Fill the tube with sugar and surround the tube with sand.
• Pull out the paper tube slowly from the cup and then dip the cup into a beaker of water.
• Watch the sugar cubes dissolve in water to form gaps in the sugar layer.
The student's experiment demonstrates the formation of (1 point)
wells
O geysers
Osprings
sinkholes
The student's experiment demonstrates the formation of sinkholes; option C
What are sinkholes?Sinkholes are holes which appear on the land surface as a result of gaps between layers of earth underneath the ground.
These holes could be as a result of erosion of land
The student's experiment demonstrates how holes are dissolution of the sugar cube occurs due to hole allowing water in.
Therefore, the student's experiment demonstrates the formation of sinkholes.
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Answer:
Sinkholes
Explanation:
Endospores are resistent structures that contain cytoplasm and genetic material, and can ____________ when favorable conditions resume.
The blank space in the task content should be filled with; develop into new organisms.
What are endospores?Endospores as their name implies are formed within the cells of bacteria as an alternative reproduction mode. The spores in discuss are formed within bacteria vegetative cells or mother cells known as sporangia. The endospores therefore are able to develop into new organisms provided that the conditions become favourable.
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18. What important cellular process produces water
molecules as it breaks down glucose in the presence of
oxygen?
Answer:
Aerobic cellular respiration
Which instrument is best suited for measuring the dimensions of a shoebox?
a triple-beam balance
a volumetric flask
a ruler
a caliper
Answer:
a ruler
Explanation:
I say A ruler because think how small a shoebox is a shoebox is not that big so you would measure it with a ruler
in addition to glucose and chloride, which electrolyte is a component of peritoneal dialysate fluid?
In addition to glucose and chloride, other electrolytes that are components of peritoneal dialysate fluid are magnesium, sodium, and calcium.
What are electrolytes?Electrolytes are solutions or molten substances which conduct electricity as a result of ions present in the them.
The ions present in body fluids such as blood and interstitial fluid are known as electrolytes.
The peritoneal diasylate fluid contains several electrolytes such as chloride, sodium, calcium and Magnesium.
Therefore, electrolytes are present in body fluids.
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(a) Explain why red blood cells burst when placed in some solutions of sodium chloride.
Answer: Red blood cells placed in a solution with higher water concentration compared to their contents will gain water by osmosis that will then swell up and then burst.
Explanation:
Osmosis causes red blood cells to release water when they are exposed to sodium chloride solutions that are more concentrated than their internal environment (hypertonic solutions).
Hemolysis is the term for this process. In an attempt to balance the solute concentration, water is pulled out of the cells by the high concentration of sodium chloride outside the cells, creating an osmotic gradient. The result is that the cells shrink and may eventually rupture or burst. Lack of water reduces internal pressure and destabilizes cell membranes, causing red blood cells to burst.
This phenomenon underscores how important it is to maintain the correct balance of solute concentrations to protect the structural and functional integrity of red blood cells.
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When using Triple Sugar Agar, select the coloration that can be expected with different bacterial growth (select all that apply). Group of answer choices Yellow butt with a red slant Yellow butt with a yellow slant Yellow butt with a green slant Purple slant Red butt with a red slant Black and red slant Metallic green slant Red butt and slant with bubbles
The coloration that can be expected with different bacterial growth when using Triple Sugar Agar are:
Yellow butt with a yellow slantYellow butt with a red slantWhat is bacteria?Bacteria are simple and microscopic organisms which are mostly pathogens of different infectious diseases
For growth to occur in bacteria, different kinds of nutrients are needed in the process called growth media.
Two different growth media which bacteria uses to grow are:
Liquid growth mediaSolid growth mediaIn conclusion; The coloration that can be expected with different bacterial growth when using Triple Sugar are Yellow butt with a yellow slant and Yellow butt with a red slant
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how is an action potential generated ?
The action potential generated through a threshold or suprathreshold stimulus on a neuron.
Where is the action potential generated?The action potential (AP) originates thanks to a disturbance of the resting state of the cell membrane, with consequent flow of ions through the membrane and alteration of the ionic concentration in the intra and extracellular environments.
In this case, is a rapid change in the electrical potential of neuron membranes.
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Which two processes cycle carbon directly between the atmosphere and biosphere?
a. Combustion and cellular respiration
b. Photosynthesis and cellular respiration
c. Chemosynthesis and decomposition
d. Decomposition and combustion
During double fertilization, what is made when a sperm cell combines with the polar nuclei
Answer:
The endosperm is formed
Explanation:
double fertilization, in flowering plantreproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and two polar nuclei that ultimately results in the formation of the endosperm (the food-storage tissue) of the seed. This is called double fertilization because the true fertilization (fusion of a sperm with an egg) is accompanied by another fusion process (that of a sperm with the polar nuclei) that resembles fertilization. Double fertilization of this type is unique to flowering plants (angiosperms) and is responsible for the formation of both the embryo and its potential food source in the seed.
CR
Pre-Test
Active
1
2
Which event signals the birth of a star?
A core shrinks and explodes in a supernova.
A protostar collapses, becoming dense and hot.
Extreme heat and pressure causes nuclear fusion.
A mass of gas and dust grows and forms a protostar.
Mark this and return
Hydrogen and helium atoms fuse together to generate stars. The heat produced by this process releases a lot of energy. Four hydrogen atoms and one helium atom are fused together in this procedure. Thus, the correct option is C.
What is helium?Hydrogen and helium atoms fuse together to generate stars. The heat produced by this process releases a lot of energy. Four hydrogen atoms and one helium atom are fused together in this procedure. The nuclear fusion processes are caused by the external heat, pressure, and gravitational force. The pressure produced by the heat allows the helium atom to fuse with carbon. These fusions are required to give the star its form.
The nuclear fusion processes are caused by the external heat, pressure, and gravitational force. The pressure produced by the heat allows the helium atom to fuse with carbon. These fusions are required to give the star its form.
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why do the potato strip in pure water get bigger?
Answer:
The incoming water in the potato cells pushes on the cell walls and makes the cells bigger , that's how the strips of potato in pure water becomes bigger .
.All cells share common traits that help scientists draw conclusions about the basic needs and functions of living organisms. What is the meaning of cell theory?
O proves that all cells have all the same structural parts
Ost
The connotation of the cell theory is that a cell is the structural and functional division of an organism. A cell is the smallest unit of all living entities. All living organisms whether it is plants or animals are constructed up of cells.
Who proposed the cell theory?The cell theory was proposed by a German botanist M.J Schleiden and a German zoologist T. Schwann.
The cell theory was further distilled in 1855 by German biologist R. Virchow. According to him, "All cells are arising from pre-existing cells."
Therefore, it is well described above.
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What geological change and event occurs at a transform boundary?
A. Plates collide, and a trench is formed.
B. Plates move apart, and a rift is formed.
C. Plates collide, and a mountain is formed.
D. Plates slide past one another, and a fault is formed.
The following steps are involved in the process of RNA synthesis: I. Elongation II. Termination III. initiation Rearrange them in the ascending order of the process.
Explanation:
1 initiation
binding of RNA polymerase
2 élongation
synthesis of chain
3 termination
end of synthesis and production of rna
Herbivores have teeth designed for
eating...
A. Plants only
B. Animals only
C. Plants and animals
Answer:
A. Plants only
Explanation:
Herbivores are animals that only eat plants. So therefore A. Plants only is the answer. Brainliest?
Answer:
A. Plants only
Explanation:
Hope It Helps!!!
Select the correct location on the graph.
The graph shows the area of land deforested in a certain region each year from 1990 to 2004. Which bar on the graph corresponds to the year in
which human activity would have caused the greatest single-year change in biodiversity in the
region?
40,000
30,000
20,000
10,000
miles)
Area Deforested
(square
1990
1991
1992
1990
1991
1992
1993
1994
1996
1995
1997
1998
1999
Year
2001
2000
2002
2003
2004
Answer:
10,000
Explanation:
How does sucrose move in the sieve tube?
The sucrose move in the sieve tube by active transport.
What is active transport?Active transport is a type of transport in which the cell expends energy to move solutes against their concentration gradients. The sodium-potassium pump is an example of active transport. Active transport differs from passive transport in that the cell does not expend energy.
In this case, the sucrose moves from companion cells into sieve tube elements by active transport. This reduces the water potential of the sieve tube element by osmosis, which increases the hydrostatic pressure.
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Natural resources are spread equally within a city is that true ?
Anemia is a medical condition in which the affected person lacks enough red blood cells. What two effects will such a condition have on the patient?
The two effects will such a condition have on the patient are as follows:
The patient will have less hemoglobin in the blood.The patient will have a reduced oxygen supply to the cells.What is Anemia?Anemia may be defined as a condition that leads to a deficiency of hemoglobin or Red blood cells in the blood.
The complete question is as follows:
The patient will have less hemoglobin in the blood.The patient will have less immunity against bacteria.The patient will have a reduced oxygen supply to the cells.The patient will have a thicker blood composition.The patient will have increased platelets in the body.Red blood cells are accountable for carrying oxygen to cells and when a patient is suffering from anemia it leads to a reduced oxygen supply throughout the body.
Therefore, the correct options are A and C.
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In the nebular hypothesis, why did the nebula start to collapse?
Answer:
The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger. Eventually, the clump of dust and gas gets so big that it collapses from its own gravity.
Explanation:
During eccentric muscle contraction, the muscle __________.
Answer:gets longer as it contracts
Explanation:
Which lipoprotein is made inside the small intestinal cells and transports dietary fats through the circulatory system to the liver and other tissues?.
Answer:
Chylomicrons
Explanation:
These are big triglyceride-rich particles produced by the colon that help transport dietary triglycerides and cholesterol to peripheral tissues and the liver.
what are tissues composed of in addition to cells?
There are four types of tissues in the organism (epithelial, muscular, connective, and nervous). Tissues are composed of cells and extracellular matrix.
What are tissues composed of?
Tissues are cells organized and associated, accomplishing different functions in the organism.
There are four types of tissues: epithelial, muscular, connective, and nervous.
All of them are composed of the same components that might vary according to the tissue and its functions.
CellsCells are the main component of tissues. Their shape, size, organization, and closeness vary from tissue to tissue.
Extracellular matrixThe extracellular matrix is the space between cells. It varies in size, state, and composition depending on the tissue.
It contains proteins, water, salts, and other macromolecules. This composition also varies.
Among their many different functions, we can mention hydration, mechanical pressure resistance, reproduction and cell differentiation, motility, substances diffusion, communication between cells, and damaged tissue repairing, among others.
In addition to cells, the extracellular matrix compose tissues.
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Which of the following is NOT true of the Wada test? Group of answer choices It entails the injection of amobarbital. It can be used to determine which hemisphere is language dominant. It determines the extent to which the corpus callosum has been resected. It is used before elective surgery for the treatment of epilepsy.
The option that isn't true of the Wada test is D. It is is used before elective surgery for the treatment of epilepsy.
What is Wada test?It should be noted that Wada test is used to evaluate how important each side of the brain is with respect to language and memory function.
In this case, the option that isn't true of the Wada test is that is is used before elective surgery for the treatment of epilepsy.
In conclusion, the correct option is D.
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A car with a mass of 1,324 kilograms, traveling at a speed of 20 meters/second, crashes into a wall and stops. What is the kinetic energy after this perfectly inelastic collision?
Answer:
0 joules
Explanation:
I think the correct answer from the choices listed above is 0. The kinetic energy after the perfectly inelastic collision would be zero Joules. A perfectly inelastic collision occurs when the maximum amount of kinetic energy of a system is lost. Hope this answers the question.
