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
Savatey [412]
3 years ago
11

How many half-lives occur in 4 hours? A. 1 B. 2 C. 3 D. 4

Biology
1 answer:
Solnce55 [7]3 years ago
3 0
I believe the answer is C
You might be interested in
The primary electron acceptor in photosystem II is __________. Group of answer choices P700 P700 P680 P680
sesenic [268]

Answer:

680

Explanation:

When the P680 special pair of photosystem II absorbs energy, it enters an excited (high-energy) state. Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin.

7 0
2 years ago
Identify the following
const2013 [10]
Like D. Codon is the answer
3 0
3 years ago
What is an orginasim that feeds off of a living host?
snow_tiger [21]
<span>Parasites that live in the body are called endoparasites. An example of an endoparasite is a hookworm that lives in the hosts gut. </span>
6 0
3 years ago
Read 2 more answers
What part of the brain is responsible for happiness
victus00 [196]
The limbic cortex. Another area called the precuneus also plays a role.
7 0
2 years ago
What are some of the functions of photosystem i and photosystem ii in plants?
Sidana [21]

Answer:

Photosystem I (PS-I )and photosystem II (PS-II ) are two multi-protein complexes. These complexes contain the pigments used to absorb, harvest and catalyze the photons and light energy in the photosynthetic reactions. The main purpose of photosynthesis reactions to produce high chemical energy compounds.

Photosystem I and II are different from each other because of their absorbing wavelength of light. PS-I absorbs the longer wavelength of light than PS-II.

PS-I plays the major role in the production of high energy carriers ATP and NADPH using light energy (700 nm).

PS-II plays its function in the hydrolysis of water and ATP synthesis using light energy (680 nm).

7 0
3 years ago
Other questions:
  • Which structure would a unicellular organisms most likely have to move around?
    7·1 answer
  • The CRISPR/Cas9 system can cleave genomic DNA at sequences other than the desired target, a phenomenon referred to as off target
    15·1 answer
  • Which of the following represents a metabolic pathway? A. four boxes in a row with arrows between them B. one box on top with ar
    12·2 answers
  • What is the body's response to energy ?
    11·1 answer
  • Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damag
    14·1 answer
  • The female with this karyotype would have which genetic disorder? A. Klinefelter's syndrome B. Turner's syndrome C. trisomy-21 D
    11·1 answer
  • What organs control the amount of water in the body by filtering your blood and excreting waste products through urine? kidneys
    14·1 answer
  • What Amendments affect election or tenure of officeholders?
    7·1 answer
  • Name three different alleles for human hair color
    14·1 answer
  • 1. Sensation is to as perception is to a. vision, olfaction b. conscious, unconscious c. awareness, interpretation d. taste, vis
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!