BIOLOGY HIGH SCHOOL

Which statement about photosynthesis is correct? a Plants get the energy they need for photosynthesis from soil. b Plants get the energy they need for photosynthesis from sunlight. c Plants get the energy they need for photosynthesis from water. d Plants do not require energy to perform photosynthesis.

Answers

Answer 1
Answer:

The true statement about photosynthesis is that "plants get the energy they need for photosynthesis from sunlight"

PHOTOSYNTHESIS:

  • Photosynthesis is a unique process undergone by the cells of autotrophic organisms like green plants, in order to produce their own food.

  • Green plants make use of the light photons from the sun as their energy source.

  • A pigment called CHLOROPHYLL, which is enclosed in the chloroplast organelle is responsible for capturing the light energy.

  • Therefore, the true statement about photosynthesis is that "plants get the energy they need for photosynthesis from sunlight"

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Answer 2
Answer:

Answer:

B) plants get the energy they need for photosynthesis from sunlight

Explanation:

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What is required for reactants to form bonds?

Answers

Initial energy input that meets or exceeds the activation energy (the amount of energy needed for this is different for all reactions).
This is true for both endothermic and exothermic reactions, because energy must be supplied to break the bonds holding the atoms of the reactants together before they can rejoin in a different combination (to form the products)

Final answer:

For reactants to form bonds, there must be an initial energy input to drive the collision of atoms, ions, and molecules. This collision enables the breaking and formation of bonds. Both synthesis and exchange reactions demonstrate this process.

Explanation:

In order for reactants to form bonds during a chemical reaction, a few conditions must be met. Firstly, an initial investment of energy is required. This energy, often in the form of heat, provides the kinetic energy necessary to fuel the collisions of atoms, ions, and molecules. This collision must occur in an orientation that allows contact between the atoms that will become bonded together in the product. Secondly, the particles of reactant must come into contact with each other before they can react. This could be a direct collision or through another medium that facilitates the interaction.

Once the reactants collide, bonds are broken in the initial molecules, and new bonds are formed to create the product. Energy is required for breaking old bonds and is released when new ones are formed. This process can be seen in both synthesis reactions (two components bond to form a larger molecule) and exchange reactions (bonds are both formed and broken as components of the reactants are rearranged).

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Which statement correctly explains the molecular structure of water?

Answers

One is oxygen and two is hydrogen atoms are joined by a covalent bond.
hope this help!!!!!!!!

How many variables should you have in a control experiment?

Answers

It depends on the case, but usually two variables should be in a controlled experiment.
you should do three variables so you can note the difference

Which of the following is not true of saliva?A. cleanses the mouth
B. contains enzymes that begin the breakdown of proteins
C. moistens food and aids in compacting of the bolus
D. dissolves food chemicals so they can be tasted

Answers

The answer is B. contains enzymes that begin the breakdown of proteins.

Saliva is watery substance secreted by salivatory glands. It cleanses the mouth and maintenance oral hygiene. It moistens the food, so the created food bolus could easier pass into the esophagus. It also carries food chemicals to taste receptors so they can be tested. It contains enzymes involved in the food digestions. Some of them are amylase, which begins the breakdown of the starch, and lipase, which begins the breakdown of triglycerides. There are no enzymes in the saliva that break down proteins.

Final answer:

Saliva cleanses the mouth, moistens and compacts food, and dissolves food chemicals for taste.

Explanation:

Saliva is a clear liquid that is produced by the salivary glands in the mouth. It serves several important functions in the digestive process. It keeps the mouth clean by cleansing it and helps to remove food particles. Saliva moistens food and aids in the compacting of the food into a bolus, which can be easily swallowed. Additionally, saliva contains enzymes such as amylase that begin the breakdown of carbohydrates, not proteins. Lastly, saliva dissolves food chemicals so they can be tasted.

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Light from distant galaxies most likely show

Answers

Light from distant galaxies can help us calculate how old the galaxies are. By analyzing how the how the light has changed by the time it reached us, we can find out how old the star system from which it originates is.

A student wants to compare how long a flashlight will continue to shine using different brands of batteries. How can the student make sure that the test is fair?

Answers

Answer:

start with unused fresh out of the pack batteries

Answer:

THE TYPE OF FLASHLIGHT USED

Explanation:
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