What is a photosystem?

a structure which contains stroma
b structure where the dark reaction occurs
c structure through which H+ flows to form ATP
d cluster of the light-absorbing molecules called pigment
Thanks!

Answers

Answer 1
Answer:
D) A cluster of the light-absorbing molecules called pigment

Related Questions

1. Energy is the
O weight calculated with the gravitational force
O ability to do work
O mass in a given volume
O circumference divided by 3.14

Answers

Answer:

A is the correct answer, hope this helps

What do the rabbit, fungus, and tree have in common?

Answers

Answer: The rabbit, fungus, and trees have in common are all multicellular organisms.

Explanation:

The rabbit,fungus and trees have several common features among themselves body organisation(unicellular or multicellular), ecological role etc,

What are the common features of rabbit,fungus and trees?

Since all of them are living organism,the common features are as follows:-

All of them have same body organisation ( multicellular).Same mode of fertilization ( anisogamous)All need oxygen for respiration.All shows cellular metabolism.All of them have consciousness.All of them shows cell division by meiosis or mitosis.All of them show growth and reproduction.

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The largest layer of Earth is
O outer core
O mantle
O crust
O inner core

Answers

Mantle is the answer

Answer:

mantle

Explanation:

what is the molar mass of Br2 in grams

Answers

Answer:

159.808 g/mol

Explanation:

Br itself is 79.904 g/mol. So multiply it by two.

The molar mass of [tex]Br_{2}[/tex] is approximately 159.808 grams per mole.

When calculating the molar mass of [tex]Br_{2}[/tex], also known as diatomic bromine, the atomic masses of the two bromine atoms (Br) found in the molecule are added together.

Bromine (Br) has a mass of roughly 79.904 grammes per mole according to its atomic weight.

Because of this, the molar mass of [tex]Br_{2}[/tex] is calculated as follows: 2 times 79.904 g/mol = 159.808 g/mol

As a result, the amount of grammes that constitute one mole of [tex]Br_{2}[/tex] is roughly 159.808.

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Which of the choices below gives the best "big picture" snapshot of what is happening in the body?

Question 10 options:

Specialized cells have specialized DNA that allows them to produce specialized proteins needed by an individual cell


The brain sends mRNA as a messenger to specific cells telling them to send proteins to copy DNA from the ribosomes so other cells can get a copy of those genes.


Every cell in the body contains the entire DNA genome. Specialized cells turn on specific genes to make specific proteins, which are then released for use throughout the body.

Answers

Answer:

that last one

Explanation:

Please Answer These Questions in Complete sentences.

1. using complete sentences, explain why a dog and a wolf might be considered the same species. Then explain why they might not be considered the same species.


2. explain how behavior might make two organisms unable to be part of the same species/population


Answers

Answer:

1.dogs and wolves shares lots of alike qualities like k9 teeth good smelling and they even look similar but they can also not be considered the same because dogs have lots of different color patterns and are less hostile than wolves

Explanation:

cant help with number 2 sorry


One reason farmers often choose genetically modified crops over non-genetically modified crops because genetically
modified crops are?

А a.much safer
B b. more productive
C c. less expensive.
D d. less controversial.

Answers

Answer:

B hopefully it’s right

Explanation:

Answer:

a

Explanation:

how lond does it take harry to go 0.7 miles if he can run 12 miles in 6 minutes

Answers

Answer:

Harry will take 21 seconds.

Explanation:

Speed of Harry = [tex]\frac{\text{Distance covered}}{\text{Time taken}}[/tex]

Since, Harry covers 12 miles in 6 minutes,

Then the speed of Harry = [tex]\frac{12}{6}[/tex]

                                          = 2 miles per minute

If he covers 0.7 miles then time taken by him will be,

Time taken = [tex]\frac{\text{Distance covered}}{\text{Speed}}[/tex]

                   = [tex]\frac{0.7}{2}[/tex]

                   = 0.35 minutes

                   ≈ 0.35 × 60 seconds

                   = 21 seconds

Which of the following is not a function of proteins?
a. gives structure to the cell.
b. forms the cell membrane.
c. composes muscle and organ tissue.
d. controls rates of chemical reactions.

Answers

all of them are a function of proteins but it might be b becuase i think proteins form the cell wall

Amagnetwith alength of 10cmwasgiven to Meera and shewas told to break themagnetinto3 pieces.Before breaking the magnet had 1 north and 1 south pole. How many north and south poles will the magnets now havetotally in all the 3 broken pieces?

Answers

Answer:

3 North poles and 3 South poles

Explanation:

A magnet is a piece of object that produces a magnetic field outside itself. A magnet has a north pole and a south pole. Similar poles repel each other, while opposite poles attract each other.

If a magnet of 10cm is broken into 3 pieces, we will have 3 pieces of magnet. Breaking a magnet does not destroy the properties of the magnet. Rather, each piece becomes a full magnet with both north and south poles.

Breaking a 10cm magnet will give us 3 magnets with 3 north and 3 south poles with equal pole strength.

Should I add more detail to describe the trend?

Answers

No, everything seems simple and easy to understand.

Which statement best describes the effect of global warming on the water cycle?


A. Global warming causes a decrease in evaporation which causes an increase in precipitation, causing an increase in flooding.

B. Global warming causes a decrease in evaporation which causes an increase in precipitation, causing an increase in flooding.

C.Global warming causes an increase in evaporation which causes an increase in precipitation, causing an increase in flooding.

D. Global warming causes an increase in evaporation which causes an increase in precipitation, causing an increase in flooding.

E. Global warming decreases precipitation which decreases evaporation.
Global warming decreases precipitation which decreases evaporation.

F. Global warming only affects the carbon cycle. It does not affect the water cycle.

Answers

Answer:(a)

Explanation:

Which of the following sentences BEST explains what happens when puddles evaporate?
A. The water absorbs into the ground.
B. The particles of matter move more slowly.
C. The water changes from one form to another.
D. The particles of matter move closer together.


Help

Answers

Answer: The correct option is C.

The water changes from one form to another.

Explanation:

This is evaporation is the process water changes from liquid to gas.

Evaporation normally occur in the presence of heat which could be from sun. When puddles are heated, the water present shrink and the water evaporates and changes into vapor or gas. The water changes into gas or gaseous vapor.

Which of the following statements regarding plant speciation is correct?

Animals adapt to their surroundings to improve reproduction rates.
Animals adapt to their surroundings to improve survival rates.
Animals adapt to their surroundings to reduce reproduction rates.
Animals adapt to their surroundings to reduce survival rates.

Answers

Answer:

The answer is Animals adapt to their surroundings to improve survival rates.

Explanation:

This is because even if they increased reproduction rates it wouldn't matter if they are dying.

Answer:

Animals adapt to their surroundings to improve survival rates.

Explanation:

Explain how genetic variation and environmental factors contribute to natural selection

Answers

Explanation:

Increasing genetic variation and the environmental effects on that variation form the basis for natural selection. A species with a great deal of genetic variability is more likely to survive as a species in a changing environment than a species with limited variability.

In pea plants, yellow seeds (Y) are dominant to green seeds (y). In a cross
between two yellow seeded plants, some offspring are produced that have
green seeds. You know that one of the pea plants has the genotype of Yy. What is
the genotype of the other plant?

Answers

The genotype of the of other plant could be: YY or Yy

A diploid cell contains 40 different types of chromosomes.
How many total chromosomes are in the diploid cell?
How many total chromosomes are in the haploid cell?
How many pairs of homologous chromosomes are in the diploid cell?
How many pairs of homologous chromosomes are in the haploid cell?

Answers

46 diploid cell 26 haploid cells

1:States that younger
fossils are on the top
layers of sedimentary
rock:
2:Dating used to
estimate the age of a
fossil:
3:The period of time
known as the "age of
fishes":
4:Charles darwin and
Alfred Russel
Wallace
5:The Age of Dinosaurs 6:The Age of Mammals
Lucy's species
7:The oldest fossil of
human ancestors
8:A helpful mutation:
9:Differences between
members of the same
species
10:Hardened minerals
that form the shape
of the organism:
11:When an organism
has more offspring
than will survive:
12:Finding the exact age
of a fossil
13:A hollow space that
forms the shape of
the original organism
14:The ship that made
the trip to the
Galapagos Islands
Survival &
reproduction of
organisms best
adapted to the
environment

Pls answer all of them I’m desperate

Answers

Answer:

A

Explanation:

I’m confused

What kind of organisms rely
on
respiration for energy? *
Bacteria
Plants
Animals
All living things

Answers

Answer:

D, All living things

Explanation:

Oxygen is required for cellular respiration and is used to break down nutrients, like sugar, to generate ATP (energy) and carbon dioxide and water (waste). Organisms from all kingdoms of life, including bacteria, archaea, plants, protists, animals, and fungi, can use cellular respiration.

Answer:

D

Explanation:

All living things

plants and animals deifinitly do resperation do that means the answer is D

if my answer helps please ark as brainliest.

it is not good for farmers to kill snakes. give reason​

Answers

Answer:

it is both good and bad because if snakes were there the rats will not destroy the fields and if their will much snakes then they will kill humans so it is both bad and good

I hope u may understand the answer

Answer:

it is not good for farmers to kill snakes because

without snakes , the numbers of these specious could become out of control

What is an advantage of a wind energy?
A. The supply of wind for use as a fuel will never run out.
B. The cost of maintaining wind farms is high for the energy generated.
C. Areas with constant winds are needed for the placement of the wind turbines.
D. Large acres of land are needed for the placement of large numbers of turbines.

Answers

The answer is to this question is A

The rising levels of oxytocin during childbirth contractions are an example of what type of feedback?
A. positive
B. negative
C. neither​

Answers

Answer:

A. Positive

Explanation:

The release of oxytocin from the posterior pituitary gland during labor is an example of positive feedback mechanism. Oxytocin stimulates the muscle contractions that push the baby through the birth canal. The release of oxytocin result in stronger or augmented contractions during labor.

A positive feedback is an increase, while a negative feedback is a decrease.

Which of the following best explains why a student researching genetics should use the most recent textbooks available?

A. No technologies from more than ten years ago are still in use.

B. Research in Mendelian genetics began very recently.

C. New discoveries frequently add to older knowledge in genetics.

D. Older textbooks are more difficult to understand. ​

Answers

Answer:

C. New discoveries frequently add to older knowledge in genetics.

Answer:

its C!!

Explanation:

Which statement is the most accurate about cold air?

C. Warm air rises because it is denser.
B. Warm air sinks because it is denser.
A. Cold air rises because it is denser.
D. Cold air sinks because it is denser.

Answers

Answer:

D. Cold air sinks because it is denser.

Answer:

D

warm water rises bc it is less dense

cold water sinks because it more dense

Two males in the Ibex population competing for mating rights will fight. These two organisms are displaying which of the following social behaviors?

A.) Cooperation

B.) Altruism

C.) Social Hierarchy

D.) Agonistic

Answers

Answer:D

Explanation: it is fighting for a mate, it could lead to hierarchical classification after but this is solely for mating rights so D agonistic

What are the characteristics of the material that you think would be best to use for an artificial leg? Explain.

Answers

Answer:

Raw Materials

Explanation:

A prosthesis system should be lightweight in the first place, and thus much of it is plastic. Typically the socket is made of polypropylene. Most of the steel in the pylon has been replaced by light metals such as titanium and aluminum. The most commonly used alloys of these materials.

Various plastics currently act as the most popular materials in prosthesis, but conventional materials like wood, leather, metal and towels also play a part.

On a coordinate plane, 3 parallelograms are shown. Parallelogram A B C D has points (3, 5), (6, 5), (4, 1), (1, 1). Parallelogram A prime B prime C prime D prime has points (3, negative 5), (6, negative 5), (4, negative 1), (1, negative 1). Parallelogram A double-prime B double-prime C double-prime D double-prime has points (negative 3, negative 4), (0, negative 4), (negative 2, 0), (negative 4, 0).
Which rule describes the composition of transformations that maps pre-image ABCD to final image A"B"C"D"?

Answers

Answer:

3

3

they are parallel

Explanation:

i did the lesson

Most plants appear green because chlorophyll:

A. absorbs green light
B. absorbs voilet light
C. reflects green light
D. does not absorb voilet light

Answers

C. reflects green light

Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green.

so its option C.

Hope it helps :)

Concerns about soil management are not the same in all climates. Suppose you own a farm in the state of Washington, where there is a lot of rain throughout the year. Which two issues would be of major concern in managing the soil on your farm?

Answers

Answer:

Soil Erosion

With so much rain coming all year, soil erosion will definitely be a problem if not handled. The splashing of the water on the soil and the subsequent runoff will increase soil erosion. Your farm will lose soil if this is not stemmed and losing soil can lead to a number of negative consequences.

Loss of Nutrients.

One such effect of soil erosion which will be another major concern is the loss of nutrients. This happens when the structure of the soil is broken down by the erosion and the various nutrients in the soil will be carried off as the rain moves away and lost to your farm.

**NEED ASAP** Worth 20 points- What is the largest structure in a plant cell?

I forgot what was the largest structure :(

Answers

it is the central vacuole
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