Solve the problem. use what you learned from the model.
each molecule of carbon dioxide contains 2 oxygen atoms
and 1 carbon atom. write equations that can be used to find
the number of oxygen atoms when given the number of
the number of carbon atoms when given the number of
use a table, diagram, or graph to show the two relationships.
then describe the relationships. explain whether or not the
relationships are functions.
show your work. use tables, diagrams, or graphs as well as
words and numbers to explain your answer.
• answer alle
The main energy source for photosynthesis comes from the sunlight. The plant has the ability to change the energy from sunlight into chemical energy that was stored by forming glucose.
2. lungs are to breathing as d.mitochondria are to cellular respiration.
Lungs breathe to take oxygen from the atmosphere to accommodate the aerobic cellular respiration. The last two process of cellular respiration will happen in mitochondria. Mitochondria is an important organ because it involved in the electron transport thayieldsld highest ATP of cellular respiration.
3. When a car engine burns gasoline, the results of the reaction are similar to when cells burn glucose. both reactions release carbon dioxide and water. in cells, the chemical energy in food is converted to atp and heat. in a moving car, the chemical energy in gasoline is converted to kinetic energy and heat.
The reaction will use chemical energy stored in the gasoline/glucose that become the reactant. The chemical energy is used to move the car/muscle, which gives the kinetic energy. Heat should be the side product which will make the car/body warmer during exercise.
4. given the relatively modest number of calories burned by anything but the most vigorous activities, why can people consume over 2,000 kilocalories a day, yet maintain a healthy body weight?
a.most of the energy consumed in food is spent maintaining the body's functions, so only a fraction of food energy needs to be burned in exercise.
The body needs the energy to do their daily function, called basal metabolic rate. If the energy from consumed food is equal or less than BMR, there is no excess energy that will be stored as fat.
5. a molecule that functions as the electron donor in a redox reaction a.loses electrons and becomes reduced.
Oxygen is highly reactive because it has a tendency to take/receive electrons from other substance. Since oxygen loses it electrons, it is become reduced.
A molecule that reacts with oxygen is the electron donor. The donor will give electron and those who lose the electron will be oxidized.
6. In cellular respiration, glucose loses electrons, whereas oxygen gains electrons.
The carbon atoms of glucose will lose electrons in cellular respiration and become carbon dioxide. The electron comes from the oxygen which will become the water. This reaction will produce ATP.
7. Oxidative phosphorylation could not occur without glycolysis and the citric acid cycle, because these two stages supply the electrons needed for the electron transport chain.
Oxidative phosphorylation produces most of the ATP from cellular respiration. But it will need electrons from the electron transport chain. The electrons will be provided by NADH and FADH2 which will be formed in the glycolysis, transition and Krebs cycle.
8. glycolysis is the only stage of cellular respiration that requires ATP to make ATP.
When glycolysis process is simplified, it doesn't seem to require ATP because it produces 2 more ATP than it uses. But there is two reaction in glycolysis called phosphate ester synthesis which an endothermic reaction. This reaction will need ATP for hydrolysis.
9. We inhale o2 and we exhale co2. carbon dioxide is produced b.in the reaction that creates acetyl coa (coenzyme a) from pyruvate
After glycolysis, one molecule of glucose will produce two pyruvates. Every one pyruvate will produce one acetyl coa, one NADH, and one carbon dioxide in transition reaction. Carbon dioxide also produced in Krebs cycle(citric acid cycle).
10. a scientist wants to study the enzymes of the citric acid cycle in eukaryotic cells. what part of the cell would she use as a source of these enzymes?
The reaction of the citric acid cycle happens in the matrix of mitochondrial and its inner membrane. A prokaryotic organism that doesn't have mitochondria will have to it in the cytosol and the cell surface.
11. Each turn of the citric acid cycle generates one ATP and four additional energy-rich molecules: 3 NADH and 1 FADH2.
NADH and FADH could undergo Oxidative phosphorylation which will give much more ATP than glycolysis or citric acid cycle combined. Each NADH could produce 3 ATP while each FADH2 could produce 2 ATP. NADH could produce more ATP because it bind with complex I while FADH2 bind to complex II.
((100−35)/100)×5.5 grams =
There are several ways you can do this. The equation above shows you subtracting 35% from 100% before you convert the result to a fraction. That is an appropriate expression for solving the problem.
The other offered choices do not respect either the order of operations or the units of the problem. (The first and third choices are the same--both wrong.)
((100-35)/100) x 5.5grams=3.575grams of oxygen
Since ha sample contains 35% carbon which means (100-35)=65% is oxygen in the sample. In order to calculate the mass of oxygen in the sample we have to find the 65% of 5.5g which means we have to multiply 65/100=0.65 with 5.5g i.e 0.65*5.5. so the mathematical expression we use will be:
((100-35)/100) x 5.5grams=3.575grams of oxygen
Humans cause environmental problems by influencing the carbon cycle in two ways. Firstly, the removal of forests has caused depletion in plants and trees that absorb carbon dioxide. Humans cause great carbon emissions to the atmosphere, which take place during industrial processes, such as coal and oil combustion.
I hope this helps.
The concentration of Carbon will be 0.0% near the central surface of the alloy.
Iron makes alloy with carbon to form a compound called cementite i.e., Fe3C. Sometimes they combine to form steel and sometimes cast iron. The combination gives a cubic lattice in which carbon plays an important role as the central position taken by carbon and corner is from iron. At the place, The carbon will take the central surface position.
If the mass of oxygen that is used to combust carbon is 35 g
then the moles of oxygen = mass of oxygen ÷ molar mass of oxygen
= 35 g ÷ 32 g/mol
= 1.0938 mol
Now, the mole ratio of oxygen : carbon monoxide based on the balance equation is 1 : 2
⇒ If the mole of oxygen = 1.0938 mol
then the mole of carbon monoxide = 1.0938 × 2
= 2.1876 mol
Mass of CO is = mol of CO × molar mass of CO
= 2.1876 mol × 28 g/mol
= 61.25 g
∴ when a certain mass of carbon is combusted in 35g of oxygen then it produces approx. 61.25 g of Carbon Monoxide.
each molecule of carbon dioxide contai...