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
Rudik [331]
3 years ago
13

What causes there to be a H+ ion concentration gradient to build up inside the thylakoid space? Check all that apply. a. The ele

ctrons provide energy for the H+ pump to transport more H+ ions into the thylakoid space. b. A special enzyme produces more H+ ions. c. Photons of light create more H+ ions. d. The photolysis of water releases H+ ions into the thylakoid space.
Biology
1 answer:
siniylev [52]3 years ago
8 0

Answer:

a. The electrons provide energy for the H+ pump to transport more H+ ions into the thylakoid space.

d. The photolysis of water releases H+ ions into the thylakoid space.

Explanation:

This question describes the first stage of photosynthesis, which is LIGHT-DEPENDENT REACTION. The light dependent reactions involve creating ATP (energy carrier) and NADPH (electron carrier) needed for the Calvin cycle (light independent stage) to occur.

The ATP is formed by pumping hydrogen ions (H+) into the thylakoid space/lumen, hence, creating a electrochemical gradient needed for ATP synthase to synthesize ATP. The buildup of H+ ions is caused by:

- The electrons that arise when light photons hit a chlorophyll molecule is used to provide energy for the H+ pump to transport more H+ ions into the thylakoid space.

- The photolysis of water results in the production of electrons (e-) and hydrogen ions (H+). These hydrogen ions are released into the thylakoid space.

You might be interested in
Tides on Earth are influenced by
Tems11 [23]

Answer:

The moon only

Explanation:

The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. These bulges of water are high tides.

6 0
3 years ago
What is velocity? <br>the one who answer will be marked brainliest ​
bixtya [17]

Velocity is the speed of an object moving in a definite direction. The velocity of an object can be uniform or variable. When an object moving along a straight line at variable speed, we can Express the magnitude of its rate of motion in terms of average velocity.

Average velocity=Initial velocity+Final velocity/2

The SI unit of velocity is m/s.

6 0
3 years ago
If female deer mates with male deer that have large antlers 2 we are witnessing_____ selection.
valkas [14]
The answer would be natural selection.

The female deer might consider the large antlers of the male deer to show of certain genetic qualities that have a higher probability of reproduction, as well as a higher social status among  deers. 

This means that if she picks him as her mate during this season, their offspring will have a better chance of survival compared to her picking another deer with smaller antlers.

This is called natural selection because she will pick the deer that is most adapted to that environment. Thus their offspring can be ensured to have the highest possible probability to survive. 
3 0
3 years ago
Identify 3 limitations of the tri-component model. (Psychology)<br>thanks, heaps!
Helga [31]
<h2>Three limitations of Tri-component Model </h2>

There is usually discrepancy with behaviors and attitudes of the individuals.

  1. That is the reason there are the attitudes in which effective component, behavioral component and cognitive components.
  2. The sensitive and emotional reactions or feelings of an individual with one another. Though when an individual behaves with others through actions.
  3. The third limitation is when a person has a belief about anything.

These above are three limitations of the tri-component model.

8 0
3 years ago
How many inherited traits are considered in a dihybrid cross? <br>a.)2<br>b. )1 <br>c.)3<br>d.)4​
julia-pushkina [17]
A dihybrid cross allows us to look at the pattern of inheritance of two different traits at the same time.
7 0
3 years ago
Other questions:
  • The part of the cortex that responds mostly to the sensory signals that lead to a movement is the ____.
    9·1 answer
  • 3. What types of cells does the cell theory apply to?
    13·2 answers
  • Why do the organ systems in the body need to work so closely together? What can happen if they dont
    13·2 answers
  • What structures in the cell release energy stored in food
    13·2 answers
  • What are stem cells and how are they being used?
    15·2 answers
  • A picture of a patient’s lung showed it to be shriveled and darker than usual.
    5·2 answers
  • What important layer exists within the thermosphere
    11·1 answer
  • PLEASE HELP ME ASAP!!<br> Earth Science - AP_EX
    14·1 answer
  • Which of the following is true
    15·1 answer
  • PLEASE HELPP!! :)))))
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!