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
Fiesta28 [93]
3 years ago
7

How many photosystems are there in photosynthesis?

Biology
2 answers:
GrogVix [38]3 years ago
7 0

Answer:

Two

Explanation:

PolarNik [594]3 years ago
4 0

Answer:

2

Explanation:

There are two kinds of photosystems: photosystem I (PSI) and photosystem II (PSII) (Fig. 3.3).

You might be interested in
What serves as the molecular basis of life
SVEN [57.7K]
DNA serious as the Molecular
Basics for life DNA copies itself VIA the process of replication,
6 0
3 years ago
How do enzymes affect the activation energy of a reaction
Kitty [74]
Catalysts lower the Activation energy for reactions. The lower the activation energy for a reaction,the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrate ms bind.
3 0
3 years ago
A plateau is made of sandstone of varying densities. How is the plateau likely to change over time? PLZZ ANSWER
il63 [147K]
First let me say this, i may be wrong. I think it would change over time because first of all the sandstone has different densities. Different kinds off rocks erode and get broken down by the wind at different rates. If its density is higher, it will take longer to erode
8 0
3 years ago
Which of the following organisms is an autotroph?<br><br> clam<br> grass<br> lion<br> worm
bogdanovich [222]

Clams eat from the things they grow on so clams is the answer

6 0
3 years ago
Which of these terms describes the reaction of a plant to touch?
Cloud [144]

The answer to this question is D

.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which grouping consist of connecting fibers that enable the cell function as a unit
    10·2 answers
  • A demonstration speech typically revolves around a process or sequence of events.
    8·1 answer
  • A person who fakes symptoms for a goal is called a _________, while a person who fakes a disease for no clear goal has a _______
    9·2 answers
  • The ________ of the lungs is an indication of their expandability, how easily the lungs expand and contract.
    14·1 answer
  • What is the result unit if you divided<br> 1 kg • m/s2 by 1kg
    6·1 answer
  • The trade-off that occurs when the stomata are open is best described as:________A. when the stomata are open, oxygen can get in
    13·1 answer
  • Which of the following is not directly connected to the nasopharynx?
    11·2 answers
  • give 2 examples of a physical response to an enviromental change that would enable an organism to maintain homeostasis
    12·1 answer
  • The human body temperature is normally 98.6°F. As a person exercises, the body temperature starts to increase. As a result of th
    15·2 answers
  • Hi guys <br><br><br><br>I'm new here​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!