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3 years ago

Compare the relationship between elements, atoms, molecules, and compounds.

Biology

1 answer:

lara31 [8.8K]3 years ago

4 0

Answer:

Atoms are the building blocks of elements which means elements made up from large number of atoms having similar size and shape. Compound is made of more than one element which combines in a fixed ratio. The elements inside the compound makes bond with each other. Molecules is also made up of more than one elements. The main difference between molecule and compound is that molecules is formed from same elements while compound is formed from different types of elements.

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True or False. Sound first enters the ear, then passes through the eardrum into the ear, and then passes to the ear where the so

Scilla [17]

Answer: TRUE

Explanation:

Sound waves enter the OUTER EAR and travel through a narrow way up to the eardrum, where it vibrates.

The vibrations are sent to the bones of the MIDDLE EAR where they are amplified, and passed to a structure called COCHLEA in the INNER EAR.

Finally, it reaches the sensory cells that passes it to the auditory nerve that transmit the sound to the brain as electrical signals (neural messages) for proper interpretation.

So, it is True because from OUTER EAR to MIDDLE EAR, to INNER EAR.

4 0

4 years ago

Put these steps in the order in which they occur in light-dependent reactions. Electrons are transferred from photosystem II to

Tamiku [17]

Explanation:

Light energy is absorbed and transferred to the reaction center.
A water molecule is split.
Electrons are transferred from photosystem II to photosystem I.
ATP is synthesized from ADP and inorganic phosphate.

Further Explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. This occurs in the thykaloids, where pigment molecules like chlorophyll reside.

The chloroplast is a membrane bound organelle found in plants. It contains several invaginations of a plasma membrane called the thylakoid membrane. This contains chlorophyll pigments, in stacks called granum, while the internal spaces of the organelle are called the lumen. Liquid surrounds the granum, forming the stroma.

During the light reaction:

Light is absorbed by pigments in phosystem II (PSII). This energy is transferred among pigments til it gets to the reaction center, and is transferred to P680; this promotes an electron to a higher energy level where it then goes to an acceptor molecule.

Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent.
the electron moves down an electron transport chain (ti PS I)where it experiences continuous energy loss. This energy fuels the pumping of H+ from the stroma to thykaloid, leading to the formation of a gradient. The H+ move along their gradient and cross through ATP synthase, into the the stroma.
ATP synthase converts ADP and Pi to the energy storage molecule ATP.
The electron gets to photosystem I where it goes to pigments at P700. It absorbs light energy, the electron is promoted to a higher energy level, and passed to an electron acceptor. This leaves a space for another electron which is then replaced by one from photosystem II.
in the ETC, the molecule NADP is reduced to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

5 0

4 years ago

A growth chart is used in monitoring the growth and development of a child. the star on the chart represents a girl who is at th

Yanka [14]

No, her height is within normal range, and her pituitary gland is working normally.

<h3>Why is the pituitary gland called the master gland?</h3>

The pituitary gland is occasionally called the "master" gland of the endocrine system because it maintains the functions of many of the other endocrine glands.

The pituitary gland is no larger than a pea and is found at the base of the brain.

Thus, her height is within normal range, and her pituitary gland is working normally.

To learn more about the pituitary gland click here:

brainly.com/question/4133041

6 0

2 years ago

How is the sun affecting the dead sea

ch4aika [34]

Answer:

In the Dead Sea, they found that the rate of evaporation peaks during the day just a few hours after solar radiation peaks.

6 0

3 years ago

Select the correct answer. Anna’s mother prepares sauerkraut, a fermented dish made from finely cut cabbage and salt. Lactobacil

Vladimir79 [104]

Answer:

The answer is D!

Explanation:

This dish is actually called fermented cabbage. Hence the process of lactic acid fermentation. I also took the test. Good Luck!

Hope this will help :)

8 0

3 years ago

Read 2 more answers