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
Lyrx [107]
3 years ago
7

Photosynthesis is divided into two sets of reactions (light-dependent and light-independent). Photosystem I and photosystem II a

re both light-dependent reactions while the Calvin cycle is light-independent. How are the light-dependent and light-independent reactions similar?
A) Both reactions rely on chemical energy.
B) They take place in the stroma of the chloroplast.
C) Both need light energy at all times in order to occur.
D) They occur in the thylakoid membranes of the chloroplast.
Biology
2 answers:
LuckyWell [14K]3 years ago
8 0

Answer:

D

They occur in the thylakoid membranes of the chloroplast.

guapka [62]3 years ago
5 0

Answer:

A) Both reactions rely on chemical energy.

Explanation:

The light-dependent phase of photosynthesis occurs in the chloroplasts' tilacoid membrane, the capture of light energy and the transformation into chemical energy. In this process, the green pigment molecules go into an excited state, emitting part of the absorbed energy. These pigments are organized into two photosystems (I and II), which can be defined as light capture units present in thylacoids.

In this phase, light energy is absorbed by pigments in photosystem II and transferred to chlorophyll molecules in the reaction center. The energized electrons are transferred to an electron receiver. According to the transfer of these electrons, they are replaced by others from water photolysis. Here, too, oxygen is produced.

Some pairs of electrons pass to photosystem I stimulating ATP synthesis. The energy absorbed at that moment stimulates the chlorophyll molecules of the reaction center of this photosystem, and the energized electrons are accepted by a NADP + molecule. The electrons removed from chlorophyll are replaced by others from photosystem II.

The independent light phase occurs in the chloroplast stroma and also depends on the chemical energy. It starts with the process of fixing carbon in an organic compound. In this stage, the molecules of NADPH and ATP produced in the light phase are used for the production of sugars from the reduction of the fixed carbon. The reactions that occur here are called Calvin Cycle and, in the process, most of the fixed carbon is converted into sucrose or starch.

You might be interested in
If the osmotic pressure in the glomerular capillaries increased from 28 mm hg to 35 mm hg, would net filtration increase or decr
katrin2010 [14]
<span>If the osmotic pressure in the glomerular capillaries increased from 28 mm hg to 35 mm hg, net filtration would decrease.</span>
7 0
3 years ago
_____ have highly developed olfactory receptors. Mollusks Sharks Eagles Honey bees
creativ13 [48]

I've checked all the options and I think that the right answer looks like this: Mollusks have highly developed olfactory receptors.

5 0
2 years ago
What can you learn from observing and comparing specific physical traits of different birds
Natali5045456 [20]
When you observe and compare specific physical traits of different birds you will learn that some birds have characteristics that help them live and survive in their own habitat that other birds may not have but make up those birds have characteristics that help them in their own habitat.  
7 0
2 years ago
Why are lipids and proteins free to move laterally in membranes?
Anestetic [448]
D. There are only a week Hydrophobic interactions in the interior of the membrane.
8 0
3 years ago
What statement does NOT pertain to the cephalic phase of gastric secretion? (It controls the rate at which chyme enters the smal
egoroff_w [7]

Answer:

It controls the rate at which chyme enters the small intestine

Explanation:

Cephalic phase is one of the phase of gastric secretion (other two are gastric phase and intestinal phase) that begins even before food enters the oral cavity. Thinking of food stimulates the release of gastric juice via  parasympathetic nervous system). Food that enters the stomach also stimulates the secretion of gastric juice by parietal cells. Partially digested food directly activates  G cells (Enteroendocrine cells) to secrete gastrin which also stimulates the release of gastric juice.

8 0
3 years ago
Other questions:
  • If you ate bacon and frie eggs for breakfast, the largest amount of energy would come from the
    13·1 answer
  • Why does the speaker in "The Courage That My Mother Had" feel as she does?
    14·2 answers
  • Which factors limit the productivity of a marine ecosystem?
    11·1 answer
  • Which substance might lead to potentially dangerous addictions if abused?
    6·2 answers
  • Reaction to a change in the environment it needs to be 8 letters
    11·1 answer
  • HELP PLEASE!!!
    7·1 answer
  • 15 Activation energy is the energy that a system must have before a chemical reaction can occur.?
    6·1 answer
  • What were cells named after
    14·2 answers
  • Summarize the functions of the nervous system. (1 point)
    5·2 answers
  • Name one structure found in an animal cell that is not found in a plant cell.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!