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
KiRa [710]
4 years ago
12

In photosynthesis, the electron that travels through the electron transport chain in the thylakoid membrane comes from____1____

. In cellular respiration, a molecule of supplies the electron that travels through the electron transport chain____2____.
1 2
atp atp
carbon dioxide carbon dioxide
water water
nadh nadh
Biology
1 answer:
Step2247 [10]4 years ago
3 0
Answers:
1) Water
2) NADH

--------

1) Water donates the initial electron in photosynthesis. The process of photolysis splits the water into H+ and O2 (oxygen, a byproduct of photosynthesis), and releases electrons which are taken up by photosystem II.

2) The electron transport chain is in the last step of cellular respiration, oxidative phosphorylation. NADH donates the electrons, which are used to pump H+ against the gradient into the intermembrane space of the mitrochondria. These H+ flow back across the membrane through ATP synthase to generate ATP.

You might be interested in
Early geologists were only able to place rocks in their proper order of formation based on their layering. This is called A) rel
nignag [31]
The answer is A, relative dating.
7 0
4 years ago
A family wants to adopt a dog that has very thick fur and cannot be exposed to temperatures above 90 degrees Fahrenheit. This fa
Levart [38]

Answer:

low average temperatures

Explanation:

low average temperatures so the dog doesn't overheat

5 0
3 years ago
Read 2 more answers
Celiac disease causes the destruction of the villi cells. Which of the following is most likely to happen to people with celiac
Karolina [17]
<span>They lose the ability to gain nutrients.

Hence, people with celiac disease cannot tolerate gluten.  Gluten is a type of protein found as nutrient in food and is released to the digestive system. When the body receives food that contains gluten (e.g. wheat, rye, and barley) the immune systems responds and attacks the small intestines. In the event of this, the linings of the small intestine called villi are damaged. When the villi get damaged, the body cannot properly absorb nutrients. </span>
4 0
3 years ago
Sperm and ova are known as _______, and when they fuse they form a(n) _______. a) undifferentiated cells; zygoteb) zygotes; embr
sergejj [24]

Answer: option C - gametes; zygote

Explanation:

Sperm and ova are known as GAMETES and when they fuse they form a ZYGOTE.

Note: Sperm is the male sex cell,

Ova is the female sex cell. On mating, the sperm fuses with the Ova to form Zygote, which gradually becomes embryo, and then foetus

3 0
4 years ago
Summarize the theory of plate tectonics
enyata [817]
A theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.
6 0
3 years ago
Other questions:
  • Steve is an architect. He wants his new building design to qualify for LEED designation. What does LEED stand for? A. Leadership
    14·2 answers
  • Microorganisms that catabolize sugars into ethanol and hydrogen gas would most likely be categorized as
    9·1 answer
  • The copying mechanism of DNA is most likecarving a figure out of wood.dripping water out of a faucet.taking a picture of yoursel
    11·1 answer
  • Which of the following organelles convert solar energy into glucose and oxygen?
    13·1 answer
  • Formation of the transcription initiation complex begins when general transcription factors bind to a segment of dna called the
    10·1 answer
  • Worlds easiest answer<br> What is environment?
    7·2 answers
  • In which situation would new technology be most likely to cause a change in an existing theory about new structures a cell
    8·2 answers
  • Observable matter makes up about what percentage of the universe?<br> 5%<br> 12%<br> 50%<br> 95%
    10·2 answers
  • He water that comes out of your faucet at home used to be in the ocean. How did water get from the ocean to your water faucet?
    15·2 answers
  • 1. Melissa raises crickets at her pet store that she
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!