The following chemical equation shows the combustion of ethane. Balance the equation by filling in the coefficients.
Answer:
2 C2H6 + 4 O2 → 2 C + 2 CO2 + 6 H2O
Explanation:
2 C2H6 + 4 O2 → 2 CO2 + 6 H2O is the balance equation for the combustion of ethane. In the question, the equation for combustion of methane is unbalanced i. e. C2H6 + O2 → CO2 + H2O so by putting coefficient 2 in front of ethane, 4 in front of oxygen, 2 in front of carbondioxide and 6 in front of water which can balance the unbalanced equation for combustion of ethane
How many eggs are initially produced; approximately how many eggs does Melinda still have at the age of 317
ANSWER: But Melinda created all her eggs when she looked like this, a fetus in her mother's womb. Within a couple of months, she created several million eggs. And then, the eggs began to die. At the age of 31, Melinda may only have a few thousand left.
why potassium not an amino acid
(just give me a simple answer)
Potassium is an atom......
Select the correct answer. Which statement is an example of a focused topic? A. Fruits from rainforests are known to heal diseases that affect people around the world. B. Fruits from rainforests are enjoyed by people all over the world. C. Fruits from rainforests are part of a healthy diet. D. Fruits from rainforests in the Amazon are effective remedies for the common cold.
Answer:
I think D
Explanation:
Answer:
D. Fruits from rainforests in the Amazon are effective remedies for the common cold.
Explanation:
What are four economically important sediment resources?
Answer: lithogenous, biogenous, hydrogenous, and cosmogenous
Explanation:
Many bacteria, including E. coli, are capable of growing under both anaerobic and aerobic conditions. Some mutations are introduced into an E. coli strain that inactivate several enzymes involved in DNA repair. The mutant strain grows normally when kept in an incubator with a 100% nitrogen gas atmosphere. However, the strain dies when exposed to a normal laboratory atmosphere. Why
Answer:
Due to inability to survive in aerobic condition.
Explanation:
The strain dies when exposed to a normal laboratory atmosphere instead of nitrogen gas atmosphere because the mutation causes change in the capability of the strain to survive in the aerobic conditions. This mutation inactivate several enzymes which is also responsible for their capabilities of surviving under both anaerobic and aerobic environment so that's why the strain dies when exposed to normal atmosphere..
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A. The steel wool should be burned inside of a sealed jar or other closed system.
B. The steel wool should be burned over a long period of time (at least two hours).
C. The steel wool should be burned in a room that is at room temperature (20–25°C).
D. The steel wool should be burned in its entirety so that no iron is left in its original state.
Answer:
1) Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
Explanation:
The explanation for number 1 is in the link below and the answer is provided also:
https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020
An organ ________ is a combination of several organs that perform together for a common function. a. basic b. cells c. living d . molecules e. organ f. organism g. system h. tissue
Explanation:
System is a combination of several organs that perform together for a common function.
Hope it will help :)❤
Food webs in ecosystems become very complicated very fast. Explain why.
Answer:
Food webs are more complex than food chains, yet equally as useful in understanding the processes of ecological communities. A food web shows the flow of nutrients between different types of organisms which can help us understand the energy transfer as described before.
Explanation:
Food webs in an ecosystem involves the combination of two or more food
chains. This involves all the relationship an organism has with the others.
This makes the food web complex.
Food webs have different types of organisms present which ranges from
plants which are regarded as the primary producers to animals such as Lion
which can be regarded as a Secondary/tertiary consumer in the ecosystem.
The occasional change in the geography and seasons in the ecosystem
also makes it very complex as some animals exhibit different traits when
subjected to certain conditions. This makes analysis of energy flow and relationship sketchy to determine.
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Which of the two parts of the light microscope magnify image of an object?
Answer:
eye piece lense
objective lens
An inflated basketball hold 6 liters of air at 3 ATM. How much air at 1 ATM went into the ball
Answer:
18 litres
Explanation:
Using Boyle's law equation as follows:
P1V1 = P2V2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (litres)
V2 = final volume (litres)
According to the information in this question, An inflated basketball hold 6 liters (V1) of air at 3 atm (P1). The volume of air (V2) at 1 atm (P2) that went into the ball can be calculated thus:
Using P1V1 = P2V2
3 × 6 = 1 × V2
18 = V2
V2 = 18 litres.
True or False: Just one change in the sequence of nucleotides or bases in DNA can change the code.
Answer:
true
Explanation:
Cystic fibrosis is inherited with the autosomal recessive allele c. Individuals with the autosomal dominant allele C do not have the disease. Jessica does not have cystic fibrosis but she has a brother with the disease. Her husband Jerry also does not have cystic fibrosis but has a sister with the disease. a. What is the probability that Jessica carries the c allele
Complete question:
Cystic fibrosis is inherited with the autosomal recessive allele c. Individuals with the autosomal dominant allele C do not have the disease. Jessica does not have cystic fibrosis but she has a brother with the disease. Her husband Jerry also does not have cystic fibrosis but has a sister with the disease.
A- What is the probability that Jessica carries the c allele?
B- What is the probability that Jerry carries the c allele?
C- What is the probability that Jessica and Jerry could have a child with cystic fibrosis?
Answer:
A) The probability that Jessica carries the c allele equals 2/3.
B) The probability that Jerry carries the c allele equals 2/3.
C) The probability that Jessica and Jerry could have an affected child is 1/9
Explanation:
Due to technical problems, you will find the complete question, answer, and explanation in the attached files.
What practice helps scientists avoid bias in their findings
Answer and I will give you brainiliest
Answer:
Answer is in picture.
Explanation:
Hope it is helpful.....
Match the body systems and interaction descriptions:
1. Circulatory and Respiratory
2. Digestive and Circulatory
3. Nervous, Muscular, and Skeletal
4. Circulatory and Integumentary
5. Muscular and Digestive
6. Respiratory and Muscular
7. Circulatory and Skeletal
8. Excretory and Circulatory
9. Nervous and Integumentary
10. Muscular and Circulatory
_. Nutrients pass into the circulatory system to be carried to body cells
_. Lungs supply oxygen carried by blood to cells of the body
_. Production of blood cells in bone marrow
_. Chewing, swallowing and movement of food through the digestive tract
_. Pumping of the heart & blood
_. Daily movement and coordination
_. Kidneys remove wastes from blood
_. Cooling through dilation of blood vessels near the surface of the skin
_. Sense of touch
_. Movement of the diaphragm in breathing
2. Nutrients pass into the circulatory system to be carried to body cells
1. Lungs supply oxygen carried by blood to cells of the body
7. Production of blood cells in bone marrow
5. Chewing, swallowing and movement of food through the digestive tract
6. Pumping of the heart & blood
3. Daily movement and coordination
8. Kidneys remove wastes from blood
4. Cooling through dilation of blood vessels near the surface of the skin
9. Sense of touch
10. Movement of the diaphragm in breathing
There are numerous parts to the human body. Every physical portion serves a distinct purpose.
What is body systems and their interaction?There are numerous parts to the human body. Every physical portion serves a distinct purpose. To better comprehend how the human body's components interact with one another and work together as a whole, scientists divide the body into systems. A group of bodily parts that cooperate to carry out a specific task is known as a body system.
For instance, the integumentary system, that shields the body from its surroundings, is made up of the skin, hair, and nails. Another instance of an organ that guards the body is the immune system.
1. Lungs supply oxygen carried by blood to cells of the body
2. Nutrients pass into the circulatory system to be carried to body cells
3. Daily movement and coordination
4. Cooling through dilation of blood vessels near the surface of the skin
5. Chewing, swallowing and movement of food through the digestive tract
6. Pumping of the heart & blood
7. Production of blood cells in bone marrow
8. Kidneys remove wastes from blood
9. Sense of touch
10. Movement of the diaphragm in breathing
Therefore, there are numerous parts to the human body. Every physical portion serves a distinct purpose.
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Help plzzz I’ll give Top Brainiest
Answer:
A
Explanation:
Just think about it, you have to heat the tomatoes on the stove to be a sauce, the heat makes it soft.
what is the function of a membrane protein
Answer:
Membrane proteins can allow hydrophilic molecules to pass through the cell membrane.
Explanation:
Answer:
Explanation:
Membrane proteins are common proteins that are part of, or interact with, biological membranes. Membrane proteins fall into several broad categories depending on their location. Integral membrane proteins are a permanent part of a cell membrane and can either penetrate the membrane (transmembrane) or associate with one or the other side of a membrane (integral monotopic). Peripheral membrane proteins are transiently associated with the cell membrane.
I would appreciate help please thank you
Answer:
i am fairly sure the last option isn't true.. i hope i'm correct
A new trait that was never in the gene-pool before is called a
A) Adaptation
B) Mutation
C) Genetic Variation
D) normal
Answer:
B) Mutation
Explanation:
Mutation is a mistake in the Gene's I doesnt mean it's a bad thing or a good thing. It could be both
You perform an experiment in which chromatin is isolated from sea urchin sperm cells and briefly digested with micrococcal nuclease. When the chromatin proteins are removed and the resulting purified DNA is analyzed by gel electrophoresis, you observe a series of DNA fragments that are multiples of 260 base pairs in length (that is, 260 bp, 520 bp, 780 bp, and so forth). a) Although these results differ somewhat from the typical results discussed in the chapter, explain why they still point to the likely existence of nucleosomes in this cell type. b) What can you conclude about the amount of DNA that is associated with each nucleosome
Answer:
a) DNA fragments associated with histone proteins are all multiple in length (i.e., 260 bp, 520 bp, 780 bp, etc), thereby suggesting the presence of a pattern of organization in the chromatin
b) it suggests that each unit of organization (ie, each nucleosome) consists of 260 bp associated with chromatin proteins
Explanation:
The nucleosome is considered as the basic unit of chromatin. A nucleosome consists of approximately two turns of DNA wrapped around a core of eight histone proteins (i.e., a histone octamer). The histone octamer consists of two copies of each of the histones H2A, H2B, H3, and H4. Moreover, the nucleosomes are connected together by linker DNA sequences which vary between 10 and 100 bp in length.
Glucose is a large molecule that is transported across the cell
membrane through a gated channel, a type of transport protein
used during what
diffusion
The type of transport protein used during glucose transportion across the cell membrane is facilitated diffusion.
Glucose is the main energetic substrate of the cell and requires a transporter protein in the cell membrane for its entry.
Proteins found on the surface of the membrane intervene in facilitated diffusion, which, when they make contact with the molecules, bind to them and allow their entry.
This route is used by molecules that are larger in size, with properties other than the membrane (polar), or are charged and do not cross the membrane freely; for example glucose.
The transport of glucose across the cell membrane is carried out by two families of membrane proteins:
Sodium-coupled glucose transporters are expressed mainly in epithelia that are responsible for the absorption and reabsorption of nutrients.Glucose transporter (GLUT) are expressed in all cells of the body and allow glucose to move from one compartment to another.
Therefore, we can conclude that glucose enters cells through facilitating transport systems, glucose transporter are expressed in all tissues of the organism and transport glucose through its concentration gradient, hence the name of facilitated diffusion.
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The modern cell theory doesn't say
A all living things are multicellular
B cells are the smallest living unit in all organisms
C all cells come from other cells
D all living things are made of cells
Answer:
A
Explanation:
Modern cell theory states: cells are the basic unit of structure and function for all living things, all cells come from preexisting cells, and all living things are made from cells. It does not state that all living things are multicellular, in fact there are plenty of unicellular organisms. Therefore the answer is A.
Which of the following does not provide new genetic combinations?
The text box below contains facts about salmon:
juvenile salmon migrate from freshwater streams and rivers to the ocean.
in the ocean, juvenile salmon d.r.i.n.kk. salt water.
Special cells on the salmon's gills called chloride cells help the salmon to excrete salt.
How do populations of juvenile salmon respond to changes in salinity as they migrate?
The juvenile salmon utilize special structures but do not alter their behavior.
The juvenile salmon alter their behavior and utilize special structures.
The juvenile salmon utilize special structures to alter their behavior.
The juvenile salmon alter their behavior but do not utilize special structures.
Answer:
due to the salmons body and biology the salinity doesnt matter because they can change whats around them using the salt from inside their body
Explanation:
they both utilize and alter behavior
The populations of juvenile salmon respond to changes in salinity as they migrate the juvenile salmon utilize special structures to alter their behavior. Therefore, option C is correct.
What is salinity ?The amount of dissolved salt in a body of water is known as salinity. It makes a significant contribution to conductivity and influences many aspects of the chemistry of natural waters as well as the biological activities that take place there.
In soils and seas, primary salinity is a natural occurrence. Salt lakes, salt pans, salt marshes, and salt flats are a few examples of naturally occurring salty landscapes. Salting caused by human activity, typically land development and agriculture, is known as secondary salinity.
Salinity is the buildup of salt to a degree that harms the built environment and the ecosystem in general. While there are many areas of the Australian terrain that are naturally salty, human activity has the potential to raise salt levels. Water and salinity go hand in hand.
Thus, option C is correct.
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A segment of mRNA has the sequence UGACAUAGC. Which of the following would represent the
strand of DNA from which this piece of mRNA was made?
O ACTGTATCG
O ACUGUAUCG
O CGAUACAGU
O GTACAGATT
Answer:
B
Explanation:
U(uracil) pairs with A(adenine), G(guanine) pairs with C(cytosine)
WILL GIVE BRAINLIEST!!!!!!
the last one I guess
Explanation:
i checked internet
6. If a DNA sequence reads TCCA, a deletion mutation would look like...
a. TCTA
b. TCA
C. TCCCA
d. UCCA
I
I
Which best describes the structure of DNA?
A.It has a double helix with repeating bases
B.It has a triple helix with repeating bases
C.it has a double helix with a single base
B.It has a triple helix with a single base
Answer: A
Explanation:
The double helix describes the structure of DNA.Apr
Which symbol represents a dominant allele?
t
Tt
T
tt
Answer:
Tt
Explanation: