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Related Questions
Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction: Fe + O2 → Fe2O3
Answers
Answer:
This question is incomplete, the complete part is as follows:
This equation is unbalanced. Which of the following is the correct balanced equation for this reaction?
A. 4Fe + 3O2 → 2Fe2O3
B. 3Fe + 4O2 → 2Fe2O3
C. 2Fe + 4O2 → 3Fe2O3
D. 3Fe + 3O2 → 4Fe2O3
E. 4Fe + 4O2 → 3Fe2O3
The answer is A. 4Fe + 3O2 → 2Fe2O3
Explanation:
This question involved a chemical reaction between iron element (Fe) and atmospheric oxygen (O2) to produce iron oxide. The equation is given as follows:
Fe + O2 → Fe2O3
However, this chemical equation is NOT balanced and not in accordance with the law of conservation of matter. To balance this equation, we have to make sure that the number of atoms of each element on the reactant side is equal to that on the product side. Hence, we use COEFFICIENTS. The balanced equation is given below;
4Fe + 3O2 → 2Fe2O3
Uhm help pleaseeee. It's for bio but med students can help too!
5. Cystic fibrosis is a disease. Find out a little about what it does, whether it is dominant or recessive, and whether or not gender has any bearing on the risk of inheriting the disease. Report your findings here.
Answers
Explanation:
I found the answer I think ??
Answer:
Modes of inheritance of the altered gene can be autosomal dominant, autosomal ... In contrast, autosomal recessive disorders result in illness only if a person ... Examples of autosomal recessive disorders are cystic fibrosis (CF), Tay-Sachs disease, ... mutations have been identified, screening for all mutations is not feasible.
Explanation:
interglacial period definition
Answers
Answer:
An interglacial period is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periods within an ice age.
Explanation:
im smart :)
3. How many layers does our skin have? *
3
5
7
Answers
Answer:
3
Explanation:
i looked it up i hope that helped!
A. What are the two main types of seismic waves that are created during an
earthquake? p waves s waves surface waves
Answers
Explanation:
There are two broad classes of seismic waves: body waves and surface waves. Body waves travel within the body of Earth. They include P, or primary, waves and S, or secondary, waves. P waves cause the ground to compress and expand, that is, to move back and forth, in the direction of travel.
The respiratory system brings in _________ and the digestive system breaks down _____________ so that both substances are available to cells to make __________.
Answers
Answer:
Oxygen; food; adenosine triphosphate (ATP).
Explanation:
Cellular respiration can be defined as a series of metabolic reactions that typically occur in cells, so as to produce energy in the form of adenosine triphosphate (ATP). During cellular respiration, high energy intermediates are created that can then be oxidized to make adenosine triphosphate (ATP).
All living organisms such as plants and animals require energy to function properly (life activities). The cell organelle where energy from nutrients are released is generally referred to as mitochondria. Animals and plants retrieve energy using mitochondria to do cellular respiration because they typically act like a digestive system by taking in nutrients, breaking them down and obtaining energy rich molecules for cell-life activities.
This ultimately implies that, mitochondria provides all the energy required in the cell by transforming energy forms through series of chemical reactions; breaking down of glucose into Adenosine Triphosphate (ATP) used for providing energy for cellular activities in the body of living organisms.
Generally, oxygen goes into the body of a living organism such as plants, humans and animals when they breathe (respiratory system) while glucose is absorbed by the body when they eat (digestive system).
Hence, the respiratory system brings in oxygen and the digestive system breaks down food so that both substances are available to cells to make adenosine triphosphate (ATP).
13. What are the two parts of a scientific name? *
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Answer:
1. genus
2. species ............
Body fossils are remains of ancient organisms that have not been dramatically altered.
True
False
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Describe how restriction enzymes and ligase enzymes are used to make the plasmids that are introduced to bacteria cells during transformation. Include the words sticky ends and complementary in your response.
Answers
Answer:
DNA restriction enzymes cut the DNA molecule, while DNA ligases join the resulting DNA fragments
Explanation:
Transformation is a naturally occurring process by which bacteria incorporate exogenous genetic material from their surrounding environment. This process (transformation) is used for DNA cloning via plasmid vectors. In DNA cloning, transformation occurs after restriction enzymes cut the DNA at specific sequences named palindromic sequences (i.e, sequences that can be read the same in opposite direction). Restriction enzymes can generate sticky-ends, where enzymes make staggered cuts in the two strands (e.g., BamH), or blunt ends, where the resulting strands are of the same length (e.g., HaeIII). In general, sticky-end enzymes are more useful because they generate a 3' overhang in one molecule and a complementary 5' overhang in the other, increasing the yield and specificity of ligation. During ligation, a DNA ligase is used to join both DNA strands by forming phosphodiester bonds in the plasmid. Following transformation, bacteria can be selected on antibiotic plates.
In the African savanna, more wildebeests are born than the environment can support. Which is most likely to happen over a period of years as a result?
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Answer:
Eventually, the environment will be unable to support the production of wildebeests, this will cause there to be a loss of vegitation that then causes a food shortage, and then the wildebeests will starve.
Explanation:
It's a very unhappy process, but those herds who don't migrate to another pasture will starve and die. The death will depopulate the savanna and give the fields some time for regrowth and the cycle will begin again.
Hope this helps! :)
HELP!! ILL MARK BRAINLIEST!
30. Are lipids hydrophobic or hydrophilic? Are they polar or nonpolar molecules?
31. Describe a simple test to detect lipids in a substance. (Think about the last time you got a
burger and fries from Cookout)
32. What are the major elements found in proteins?
33. What is the basic subunit monomer of a protein?
34. What is the name of the bond that forms between amino acids when building a polypeptide
or protein?
35. What is a polypeptide?
I
36. What are the functions of proteins?
37. What foods contain high amounts of protein?
38. What are the four levels of structure found in proteins?
Answers
30.Water molecules are polar because they have positive and negative ends, rather like little magnets. Most lipids are non-polar (having no charged areas) or only slightly polar, with a very few charged areas. Water mixes with hydrophilic (water-loving) compounds by sticking to their charged groups.
31.Lipids are detected using the emulsion test. This is what happens: The test substance is mixed with 2 cm 3 of ethanol. An equal volume of distilled water is added.
32.In addition to carbon, hydrogen, and oxygen atoms, all proteins contain nitrogen and sulfur atoms, and many also contain phosphorus atoms and traces of other elements. Proteins serve a variety of roles in living organisms and are often classified by these biological roles.
33.amino acids
For example, proteins are composed of monomers called amino acids. They are linked together to form a polypeptide chain, which folds into a three dimensional (3D) structure to constitute a functional protein
34.Peptide Bonds
Section 3.2Primary Structure: Amino Acids Are Linked by Peptide Bonds to Form Polypeptide Chains. Proteins are linear polymers formed by linking the α-carboxyl group of one amino acid to the α-amino group of another amino acid with a peptide bond (also called an amide bond).
35.A polypeptide is a single linear chain of many amino acids (any length), held together by amide bonds. A protein consists of one or more polypeptides (more than about 50 amino acids long). An oligopeptide consists of only a few amino acids (between two and twenty).
36.Here are 9 important functions of protein in your body.
Growth and Maintenance. Share on Pinterest. ...
Causes Biochemical Reactions. ...
Acts as a Messenger. ...
Provides Structure. ...
Maintains Proper pH. ...
Balances Fluids. ...
Bolsters Immune Health. ...
Transports and Stores Nutrients.
37.Here is a list of 20 delicious foods that are high in protein.
Eggs. Whole eggs are among the healthiest and most nutritious foods available. ...
Almonds. Almonds are a popular type of tree nut. ...
Chicken breast. Chicken breast is one of the most popular protein-rich foods. ...
Oats. ...
Cottage cheese. ...
Greek yogurt. ..
Milk.
Broccoli.
38.The four levels of protein structure are primary, secondary, tertiary, and quaternary.
5. In which of these areas would you expect
to find the largest population of rabbits?
Please help meee
Answers
Answer:
B
Explanation:
Rabbits are herbivore, so they can live better and obtain more food there
Where is the intertidal zone located?
A. where the ocean meets the shore
B. where the ocean floor starts to slope downward
C. the ocean floor
D. where the ocean floor drops sharply
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Answer:
its where the ocean meets high and low tide sooooo I'd say A? sorry if I'm wrong
please answer fast I need the answer by 11.00pm tonight
please plase plase answer
i'll give you BRAINLIEST
=)
Which ethical view do you most agree with? Why?
Answers
Answer:
I think you forgot to add the picture
Using a path of your choice, list steps required for nitrogen to perform one complete cycle beginning and ending in the atmosphere:
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What would happen if cytokinesis did not occur?
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Answer:
Cytokinesis takes place in both meiosis and mitosis and performs the separation of he cell in half and form one nucleus into each daughter cell.
If cytokinesis did not happen, it will from multinucleated cells which means that their will be multiple nuclei in single cell and cell will not get separate in half, and no new daughter cells will form.
Cycling mater of plants and animal cells
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true or false? Depletion of water can lead to political and military conflicts.
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Answer:
true
Explanation:
What are similarities about Early earth and Modern earth
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Answer:
Crust, mantle and core.
Water availability.
Volcanic eruptions.
Explanation:
The main similarities about Early earth and Modern earth is their layers of soil such as crust, mantle and core means that the both Early earth and Modern earth are made up of these three layers. At that time water is present in huge amount while on the other hand, in Modern earth water is also present in large amount as compared to land. Volcanic eruptions occurs in both early and Modern earth.
Which of the following statements is true as the moon goes from new moon to full moon
phase? Choose all that apply.
We see more of the lighted side of the moon.
We see less of the lighted side of the moon.
The time it takes to go from new moon to full moon is 2 weeks.
The time it takes to go from the new moon to full moon is 4 veeks.
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Answer:
We see more of the lighted side of the moon because it is growing, so we see more
The time it takes to go from new moon to full moon is 2 weeks, because it takes a whole month (4 weeks) to go from new moon to full moon to new moon
P.S. PLEASE give me Brainliest?
What is the greatest carbon reservoir?
A:geosphear
B:hydrophear
C:atmosphere
D:biosphear
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Answer:
B: hydrosphere!!!!!!!!!!!!!!!!!!!
please help y'all 15 pts!
Answers
Answer:
B
Have a good day!Answer: B
Explanation:
Evolution has changed the phisical atributes of all animals
Scientists use bacteria to make ________
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Answer:
insulin
Explanation:
the simple mould that grows on aging food is used to make insulin
Hope this helps :)
PLEASE HELP I WILL MARK BRAINLIEST!!!!!!
To get a pure bred colored, you choose several colored flower plants, and let them self-fertilize,
then you plant and grow the seeds. Many of the self-fertilized plants have some colored and
some white flower offspring. You choose one of the plants from a family of all colored flower
plants, let it self-fertilize, then you plant and grow its seeds. All the plants you get have colored
flowers. Now what?
A. This colored flower
plant is pure-bred.
B. This isn't a pure-bred plant, you
need to start all over again.
C. The white flower plant (after it self-
fertilizes) will give pure-bred colored
flowers in the next generation.
Answers
Answer:
They are easy to grow & they have many traits that distinguish strains of pea ... Choose several of the colored flower plants, self-fertilize them, then plant and ... To get a pure-bred colored, you choose several colored flower plants, and let ... Many of the self-fertilized plants have some colored and some white flower offspring.
Explanation:
How did Franklin's X-ray photograph affect the work of watson
and crick?
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Answer:
Franklin took Photo 51 after scientists confirmed that DNA contained genes. Maurice Wilkins, Franklin´s colleague showed James Watson and Francis Crick Photo 51 without Franklin´s knowledge. Watson and Crick used that image to develop their structural model of DNA.
Explanation:I took that but if ya read it you will know what it is trust me.
n the Watson-Crick model of DNA, the two strands of the double helix are united by hydrogen bonds between
a.
nitrogenous bases
b.
phosphate groups
c.
nitrogen atoms
d.
sugar molecules
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What kinds of cells are there? Explain.
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Answer:
There are lots like the
Explanation:
brain cells, ,Stem cells. Stem cells are cells that are yet to choose what they are going to become. ...
Bone cells. There are at least three primary types of bone cell:
Blood cells. There are three major types of blood cell:
Muscle cells. ...
.
Fat cells. ...
Nerve cells.
Blood cells.
Brain cells.
Prokaryotes cells.
Eukaryotes cells.
What is the shape of the Earth.
[1 mark] ;)
1. Flat
2. Doughnut
3. Sphere
4. Earth is fake
Answers
Answer:
sphere
................................
this is obviously number 4
(its a sphere)
Algae are green plants.
The figure below shows the number of algae in a lake in the United Kingdom during
one year.
number of
algae
Jan
Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
month
Explain the changes in the number of algae in the lake from February to June (3)
ANSWER
Answers
Answer:
Kindly check explanation
Explanation:
According to the graph given the number of algae is represented on the y axis while the month of the year is represented on the x - axis of the graph. The change in the number of algae from February is clearly depicted by an upward slope along the y-axis which means that there is continous increase in the Number of algae in the lake during this period, that is between February to June . It could also be seen that around June the optimal number of algaae is achieved as the number of algae tend to fall as we move beyond June.
1. Which of the following statements best describes how genes relate to traits? a. Genes code for the production of specific proteins. These proteins lead to different traits. b. Genes and traits function together to produce proteins c. Traits contain instructions for making proteins, and genes are the observable outcome of such proteins. d. Genes are expressed according to instructions in traits.
Answers
PLS TELL ME THE ANSWER NOWWWWWW >:(
Genes code for the production of specific proteins. These proteins lead to different traits. The correct option is a.
What are traits?A trait, as it relates to genetics, is a unique feature of an individual. Genes, environmental factors, or a combination of both can influence traits.
Qualitative traits (such as eye color) and quantitative traits (such as height or blood pressure).
A gene is the most fundamental physical and functional unit of heredity. DNA is the building block of genes.
Some genes serve as blueprints for the creation of proteins. Many genes, however, do not code for proteins. Genes in humans range in size from a few hundred DNA bases to over 2 million bases.
Genes encode instructions for the production of specific proteins. These proteins result in various characteristics.
Thus, the correct option is a.
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