1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lesya [120]
2 years ago
9

Please Help me (About Energy)

Biology
2 answers:
sesenic [268]2 years ago
8 0
The 1st one!

Hope this helps!:)
nataly862011 [7]2 years ago
3 0

who is this Justin Bieber??!

You might be interested in
Put these steps in the order in which they occur in light-dependent reactions. Electrons are transferred from photosystem II to
Tamiku [17]

Explanation:

  1. Light energy is absorbed and transferred to the reaction center.
  2. A water molecule is split.
  3. Electrons are transferred from photosystem II to photosystem I.
  4. 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
3 years ago
Which of the following is TRUE about earthquakes?
Vikki [24]
My answer would be "Earthquakes happen along cracks in the earth's surface, called fault lines, and can be felt over large areas"
3 0
3 years ago
21. List the 4 largest satellites orbiting Saturn from smallest to largest.
Diano4ka-milaya [45]

Dione

Lapetus

Rhea

Titan

Explanation:

Saturn is the sixth planet in the solar system. It is one of the four Jovian planets that are predominantly made up of gas.

Saturn is most notable for its three rings.

  • This solar body has 18 known satellites revolving round it.
  • They are pulled by Saturn gravity.

The four largest satellites orbiting Saturn are:

  name of satellite               diameter(km)

            Dione                             1123

            Lapetus                          1470

            Rhea                               1527

             Titan                              5149

learn more:

Planet brainly.com/question/10934170

#learnwithBrainly

3 0
3 years ago
Please help me with these
olga_2 [115]

those are nucleotides

since all three of them contain deoxyribose (because there's only one hydroxil group) they are DNA nucleotides

the first nucleotide has cytosine as it's nitrogenous base

the second nucleotide has adenine as it's nitrogenous base

the third nucleotide has thymine as it's nitrogenous base

6 0
3 years ago
For example, when the intensity of light entering the eye increases, a ____________ reflex is triggered, and the circular muscle
slamgirl [31]

Answer:An increase in light intensity causes both pupils to contract (see iris) even if only one retina is directly stimulated. This is known as a consensual reflex. Conversely, a decrease in light intensity causes dilation of the pupils

Explanation:

3 0
2 years ago
Other questions:
  • How many electrons does phosphorus have in its valence shell?
    9·2 answers
  • Please help! I am desperate! :) Answer all of the questions please! :)
    9·1 answer
  • The short narrow tube that runs from the auricle to the tympanic membrane
    7·1 answer
  • A scientist is looking at a cell's membrane. she notices that the membrane is composed (primarily) of a certain type of macromol
    13·1 answer
  • Plant cells _______.
    13·1 answer
  • Why do researchers think that seals use visual cues to<br> navigate?
    9·1 answer
  • Why should organisms that produce more offspring have a more likely chance of survival?
    14·2 answers
  • Organización política del mundo
    14·1 answer
  • I’ll mark brainiest if your right need ASAP
    10·1 answer
  • A species of organism has survived in a mild environment for thousands for years. Suddenly, the climate changes and the area bec
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!