When oxygen first was released in the early seas it combined with iron to form
A)RNA
B)DNA
C)proteins
D) DNA molecules

Answers

Answer 1
“D” would be the best answer choice for me.... not sure if it’s correct though
Answer 2
in my opinion i would go with answer “D, DNA molecules” hope this helps and have a good day

Related Questions

Which of the following is not a type of scientist

Answers

Hi there! Hopefully this helps!

This answer is Cryptologist.

For context; A cryptologist is a professional skilled in deciphering codes or puzzles or developing them as to protect classified information.

That is not a scientist.

Answer:

This answer is Cryptologist.

For context; A cryptologist is a professional skilled in deciphering codes or puzzles or developing them as to protect classified information.

Explanation:

True or false? Nutrient upwelling in marine ecosystems and a seasonal difference in water temperature of fresh water lakes helps to redistribute organisms ??!!!

Answers

It is true the answer is true

Answer:

yes it is true :)

the advantage to a plant i’m having more than one pigment is shown by the absorption of:

A) Violet and red light by chlorophyl a and blue and orange light by chlorophyl B
B) Violet and blue light by chlorophyl a and orange, and red light by chlorophyl B
C) Violet, blue, green, and red light by carotene
D) Green, and yellow light by chlorophyl a, chlorophyl B, and carotene

Answers

Answer:

B) Violet and blue light by chlorophyl a and orange, and red light by chlorophyl B

Explanation:

Chlorophyll is the pigment present in green plants which is used in the process of photosynthesis by trapping solar energy for use. Chlorophyll comprises of two types namely: Chlorophyll A and Chlorophyll B

Chlorophyll A is known to absorb light in the blue-violet region while chlorophyll B absorbs light in red-blue region. These pigments however don’t absorb green light but they instead reflect it. This makes option C and D invalid. The closest option in their properties is however B.

which step is NOT involved in carbon cycle? a. decomposition b. fossilization c. respiration d. nitrification e. photosynthesis

Answers

The answer is D. Nitrification

Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound microscope?

Answers

Answer:

option A

Explanation:

Answer:

It would be the Zea Mays plant  

Explanation:

The second plant leaf that Stella analyzes is Zea Mays, also known as corn, which is a vascular plant that also produces flowers.

What is regional terminology? a set of vocabulary words that healthcare workers use to refer to specific regions of the body a set of vocabulary words that healthcare workers use to refer to specific areas of the country a set of vocabulary words about the body that are specific to certain areas of the country a set of vocabulary words about the body that are different in different areas of the country

Answers

Regional terminology is a set of vocabulary words that healthcare workers use to refer to specific regions of the body. The regions are based on basic structure and function of the body part.
you are doing an amazing job keep it up:)

What makes up the majority of the solar system?
stars
planets
asteroids
space

Answers

Answer:

space takes up the majority of the solar system.

Explanation:

Why are rainforests particularly vulnerable to environmental degradation from subsistence farmers ?
A. Because their live hoods depend on feeding their families with the food they grow, which requires fertile land that can be acquired by cutting down the forest and burning the brush.

B. Because farmers supplements their diets by hunting large, edible species, which drive some to extension.

C. Because governments are clearing land For agriculture on an industrial scale

D. Because as farmers move to urban areas, vast tracts of land They once occupied are purchased for logging by international corporations.


Please help would be really useful , thank you!

Answers

Answer:

C. Because governments are clearing land For agriculture on an industrial scale

Explanation:

Hope this helps with your test. If I am wrong, I am sorry

according to the evolutionary approach what are the three body tyoes regarding personality

Answers

Answer:

ectomorphs, endomorphs, and mesomorphs

True or false a peptide bond can be formed between the 2 atoms that are indicated by the arrows??? and explain why please!!

Answers

Answer:True

Explanation:

The righ answer is true

Match the hydrologic term to its definition.

Answers

Answer:

1st term- groundwater discharge

2nd term- subsurface runoff

3rd term- surface runoff

4th term- groundwater runoff

Explanation:

I hope this helps:)

Surface runoff: falling rainwater that flows over the ground.

Subsurface runoff: the water that infiltrates in the vadose zone; an example is falling rainwater that gets absorbed into the soil

Groundwater runoff: describes water pulled by gravity across land's surface, replenishing groundwater and surface water as it percolates into an aquifer.

Groundwater discharge: this describes the movement of groundwater from the subsurface to the surface i.e. groundwater returns back to land.

How do you explain surface runoff?

Runoff is nothing more than water "running off" the land surface. Just as the water you wash your car with runs off down the driveway as you work, the rain that Mother Nature covers the landscape with runs off downhill, too (due to gravity). Runoff is an important component of the natural water cycle.

What is a runoff in groundwater?

Runoff is the water that is pulled by gravity across land's surface, replenishing groundwater and surface water as it percolates into an aquifer or moves into a river, stream, or watershed.

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Modern day rockets were most influenced by the: use of nuclear fusion development of SCUBA creation of the telescope use of liquid fuel

Answers

Answer:

true

Explanation:

Answer: True


Explanation:

Which statement describes a parasite?
• A parasite is beneficial to its host.
O Aparasite is harmed in its relationship with the host.
A parasite only benefits when the host is alive.
A parasite always kills its host and takes all the nutrients.

Answers

Answer:

Option C : A parasite only benefits when the host is alive.

Explanation:

Hope my answer is helpful!!

Pls mark me as brainliest

C- parricide only benefits when the host is alive

Sample Response: If the electron transport system did not work, electrons from PSII would not be transferred to PSI. Ferredoxin would then have no electrons to transfer to NADP+ so NADPH would not be produced. This would also affect the light-independent reaction of photosynthesis because NADPH is needed in this reaction. What did you include in your response? Check all that apply. Electrons from PSII would not be transported to PSI. PSI would have no electrons to transport to ferredoxin. Ferredoxin would have no electrons to transport to NADP+. NADPH would not be produced. The light-independent reaction of photosynthesis would be affected.

Answers

Answer:

Check all of em

Explanation:

Answer: all of them

Explanation:

(: brainlest pls

What can plant fossils reveal about the area in which they are found? Question 3 options: A. The air pressure and ocean currents at the time the plant was living B. The type of animals that were present at the time the plant was living C. The types of rocks and minerals in the area at the time the plant was living D. The climate/temperature at the time the plant was living

Answers

Answer:

i think option B is correct answer because plants also gets nutrient from the animal so , there is more chance to get the information about the animals that were found in that area and time.

hope it helps..

the answer to this question is b

Use the drop-down menus to label the parts of a
nucleotide.
Label A

Answers

Answer:

A- phosphate group

B- 5-carbon sugar

C- nitrogenous base (adenine is a purine, just in case)

D- nitrogenous base (uracil is only found in RNA)

E- 5-Carbon sugar

F- phosphate group

Explanation:

Answer:

what the guy above me said

Explanation:

because its true

which is a reason that many organisms that have existed on Earth have left no fossils

Answers

cause they decade , i think

The chemical equation below summarizes the process of photosynthesis.
(604 (1) 0 + 111e13) và (O2 + CK Og
Where is the energy shown in the equation transferred as a result of photosynthesis?
into water
into the air
into sugars
into the ground

Answers

Answer:

The chemical equation of Photosynthesis in the question is not clear but the energy goes into water.

The answer is "Into Water"

Explanation:

Photosynthesis is a metabolic reaction which involves the synthesis of sugars (Glucose) in plants using carbondioxide and water input in the presence of sunlight. Photosynthesis, which occurs in the Chloroplast of plant cells, occurs in two stages viz: light dependent stage and light-independent stage.

The light dependent stage involves the production of ATP and NADPH molecules, which will be used in the light-independent stage. The chemical equation of photosynthesis is as follows:

6CO2 + 6H2O ---light energy--> C6H12O6 + 6O2

The light energy input in this reaction (from sunlight) is used in the light-dependent stage to break down water molecules, a process called PHOTOLYSIS OF WATER. The photolysis of water releases electrons and protons used to build a proton pump for the synthesis of ATP.

Therefore, the energy input from photosynthetic process goes into water.

which is a non-medelian trait A) a trait with a dominant and recessive allele B) A trait with a clearly dominant form C) A trait with four alleles D) A trait controlled by one gene

Answers

Answer: The answer is C. A trait with four alleles.

What term means that organisms are structurally and functionally related?

Answers

Answer:

homologous structure

I’m pretty sure I’m the answer is homologous structure, hope this helps!

An organism changes significantly from the parent generation to the offspring
generation and then stabilizes. What type of evolution is this?

-Graduated speciation
-Allopatric speciation
-Punctuated equilibrium
-Allopatric equilibrium

Answers

Answer:

allopatric speciation

Explanation:

i think 2 one

Answer:

Punctuated equilibrium

Explanation:

This is an example of punctuated equilibrium, in which the development of new species occurs very quickly and then stabilizes in subsequent generations.

What could happen if a person doesn’t get the proper amount of protein in his or her diet? The impact of a diet lacking in protein would be of little consequence. Stored proteins would assist in creating new amino acids that the body needs. The body would break down existing muscle to get the amino acids it needs.

Answers

Answer:

The body would break down existing muscle to get the amino acids it needs.

Explanation:

If a person doesn’t get the proper amount of protein in his or her diet, then the body would break down existing muscle to get the amino acids it needs, which are present in the last option.

What is the function of proteins?

Proteins are made up of building blocks called amino acids; some of these amino acids can be produced by the body, while others must be obtained through the diet, so if a person does not consume enough dietary protein, their body may not have access to enough essential amino acids to build and repair tissues or produce enzymes. As a result, the body may break down muscle tissue in order to obtain the amino acids it requires, resulting in muscle wasting; the immune system may not function optimally; and so on.

Hence, the body would break down existing muscle to get the amino acids it needs, which are present in the last option.

Learn more about the function of proteins here.

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The question is incomplete, complete question is below

What could happen if a person doesn’t get the proper amount of protein in his or her diet? The impact of a diet lacking in protein would be :

of little consequence.

Stored proteins would assist in creating new amino acids that the body needs.

The body would break down existing muscle to get the amino acids it needs.

Helppp!
You discover a new organism wnile doing
research in the mountains
of Nepal. In order to name it
you must first classify it.
After running some tests
you determine that each
cell is an individual
organism and they are
motile, through use of
flagella. You see no nucleus
in the organism, but what is
most unique about them is
that you found the
organisms living in a small
cave pond with a pH of 2,
very acidic. How would you
classify them?
A .Plantae B.Archaebacteria C.Eubacteria D.Protista

Answers

Option B is correct Archaebacteria are prokaryotes. They do not possess a nuclear membrane.
Hope this helped:)

Archaebacteria are prokaryotes do not have a nuclear envelope. Thus, option B is correct.

What are the characteristics of Archaebacteria ?

These are the ancient organism on earth, classified as bacteria, belongs to  the kingdom Archaea

There share some common features with eukaryotes and extremophilic and obligate anaerobe in nature as they can survive under extreme condition and grow in absence of oxygen.

So they under go in the process of methanogenesis and called as methanogens.

Their cell membrane is made up of lipids and cell wall is composed of Pseudomurein, which provide protection them against adverse effect.

The thick cytoplasm of archaebacteria have  all the essential elements required for nutrition and metabolism.

They reproduce asexually and are different from both prokaryote and eukaryote in terms of  ribosomal RNA. They do not perform photosynthesis.

Hence, option B is correct.

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ASAP What is a hypothesis? A. A type of syringe used in medicine. B. An explanation of scientific phenomena developed after experimentation. C. A guess. D. A proposed explanation based on observations, scientific knowledge or logic.

Answers

it would be D because it it based off of knowledge and you are proposing a hypothesis before conducting an experiment to predict what will happen

Answer:

The answer is D

Explanation:

Where are the instructions that control a
cell's activities found?

Answers

Answer:

In the nucleus

Explanation:

The location depends on the type of the cell (whether animal or plant).

If it is an animal cell it is located in the center. And if a plant cell it is located around the edge pf the cell

The nucleus is a sub-cellular structure that controls all activities done within the cell.

Answer:

The instructions that control a cell's activities found in the nucleus.

Explanation:

Each of your cells has a boss, too and that is the nucleus.

What is defined as "the actual
function of what something can
do in an ecosystem versus what it
can fundamentally do"?
A. Climatic niche
B. Realized niche
C. Approximate niche

Answers

i believe that the answer would be B.the realized niche

Which specialized carbohydrate is used in shrimp exoskeletons?

Answers

Answer:

A specialized carbohydrate that is used for structure in shrimp is called chitin. Not only it is found in the shrimp cells, but also on other crustaceans such as crabs and lobsters. Chitin is a derivative of glucose and a characteristic element in the exoskeletons of crustaceans, cell walls of fungi, internal shells of squids and octopuses, and scales of fish.

Explanation:

The specialized carbohydrate that is used in shrimp exoskeletons is chitin.

An exoskeleton refers to an external skeleton that protects and supports the body of an animal. The specialized carbohydrate that is used in shrimp exoskeletons is chitin.

Chitin is a fibrous substance that's made up of polysaccharides. It's the major constituent in the exoskeleton of arthropods. Chitin can also be found in crustaceans. It is a derivative of glucose.

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What happens to a population when its larger than the available resources can accommodate

Answers

Answer: They would die off.

Explanation:

simple .too  many people would have to much of the resource used and then there would be no more resourses to use and the population would die off

they would have trouble finding the proper nutrition which would make it harder to survive because of the small amount of resources

1. An organism that kills and eats all or part of another organism
a. predator
b. prey
C. consumer
d. producer​

Answers

Answer:

A

Explanation:

Answer:

predator

Explanation:

predators kill and eat all parts of another organism.

Which of the following is an example of reproductive isolation? two populations of finches that cannot produce viable offspring two populations of finches that have different feather colors two populations of salamanders that live in different lakes two populations of salamanders that have different tail lengths

Answers

The correct answer is A. Two populations of finches that cannot produce viable offspring

Explanation:

Reproductive isolation is a biological and evolutionary phenomenon that prevents two species from successfully reproducing, this means they cannot produce offspring or the offspring is not fertile, even if these species had a common ancestor. Additionally, as a result of reproductive isolation, each species keeps its genes and features. This phenomenon is best exemplified in "Two populations of finches that cannot produce viable offspring " because this refer to the barriers for different species to reproduce or produce viable offspring, which is the focus of reproductive isolation.

Answer:

A on edge

Explanation:

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