Which of the following summarizes photosynthesis?A. glucose + carbon dioxide → oxygen + water
B. carbon dioxide + water → glucose + oxygen + water
C. oxygen + water → glucose + carbon dioxide + water
D. carbon dioxide + oxygen → glucose + oxygen + water
Answers
Answer : The correct option is, (B)
Explanation :
Photosynthesis : It is a type of process which takes place in the plant cell. In this process the light energy converted into chemical energy.
As we know that the plant needs carbon dioxide, water and light. During the photosynthesis the carbon dioxide, water and sunlight react to gives glucose, oxygen and water as a product.
The balanced reaction will be,
Hence, the correct option is, (B)
The answer is B because that is how plants give off oxygen.
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Which of the following atoms releases more energy than oxygen when an electron is added to its valence energy level? Select one: a. helium (He) b. fluorine (F) c. carbon (C) d. nitrogen (N)
B: U carries 2 e- and 2 H+, cytochrome C carries 1 e- and no H+
C: U pumps 2 H+ into IMM from matrix, cytochrome C pumps 1 H+
Answers
The correct Statement is B: U carries 2 e- and 2 H+, cytochrome C carries 1 e- and no H+. It claims that ubiquinone carries 2 electrons and 2 protons, whereas cytochrome C carries 1 electron and no protons, is not a difference between the two but a similarity.
The statement that is NOT a difference between cytochrome C and ubiquinone (U) is Option B: U carries 2 e- and 2 H+, cytochrome C carries 1 e- and no H+. This is because both molecules act as electron carriers, with ubiquinone carrying two electrons and two protons (H+), while cytochrome C can only carry one electron without carrying a proton.
Moreover, in Statement A and Statement C, ubiquinone and cytochrome c play different roles in the electron transport chain, therefore those statements describe actual differences between ubiquinone and cytochrome C.
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Answers
Answer: D) Petroleum Jelly
Explanation: Petroleum jelly is also known as white soft paraffin or Vaseline. It's a semi-solid mixture of hydrocarbons that can be used as a lubricant and protective ointment for dry or chapped skin. It can also be used to protect against minor cuts and burns.
Answers
ºF = 19 x 1.8 + 32
ºF = 34.2 + 32
= 66.2ºF
hope this helps!
B. The average energy increases.
C. The average velocity of the particles increases by a factor of sqrt 2 .
D. The average energy remains constant but the velocity of some particles increases
Answers
Final answer:
When the temperature of a gas rises, the average energy of the particles increases. According to the Kinetic Molecular Theory, kinetic energy is proportional to its temperature. However, a rise in temperature doesn't directly double the energy.
Explanation:
The behavior of particles in a gas is very much affected by temperature changes. When the temperature of a gas increases, so too does the energy that the gas's particles have. This is defined by the Kinetic Molecular Theory, which states that the kinetic energy of a gas is proportional to its temperature. Therefore, when the temperature of a gas rises from 23°C to 46°C, the average energy of the particles increases. However, it doesn't double as an increase in temperature is not responsible for directly doubling the energy. Additionally, this increase in energy results in an increase in the velocity of the particles, but not necessarily by a factor of sqrt(2).
Learn more about Kinetic Molecular Theory here:
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A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects.
B.
Most of the dust and gas contracted into a central mass—the Sun; half the mass of the cloud condensed to form Jupiter; asteroids and comets crashed into the sun to form the smaller planets.
C.
A spinning cloud of dust began to compress to form the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets.
D.
Gravitational force held the newly formed planets around the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets.
Answers
The statement about the formation of the solar system that are true and in a correct order are Gravitational force held the newly formed planets around the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets. The answer is letter D.
B. They appear uniform, like a pure substance.
C. They have fixed ratios between their components.
D. They are made up of two or more pure substances that can be separated only by chemical processes.
Answers
The right answer is the option A. They are made up of two or more pure substances that are not chemically bonded. A classicall expample ot heterogeneous mixtures are sugar and salt. Sugar is a pure substance, salt is also a pure substance, when you mixe them you form mixture where salt is still salt and sugar is still sugar, that is what "they are not chemically bonded" means. So you can separate them by physical media.