24. What is evidence for the endosymbiotic theory? (a) rna can catalyze metabolic reactions. (b) meteorites contain organic molecules. (c) amino acids can be synthesized from inorganic compounds.

Answers

Answer 1
I think it’s A but i’m not sure

Related Questions

If the individuals in a population mate at random, and if allele h1 is at frequency 0. 60, what is the frequency of h1h1 offspring?.

Answers

Answer: Frequencies of two alleles in a gene pool before and after many random matings

Explanation:

Frequencies of two alleles in a gene pool before and after many random matings

The allele frequency of h1h1 in offspring is 0.36 if individuals in the population mate at random, the allele of interest is divided by the total number of copies of all the alleles.

What is the frequency of the allele?

The number of times the allele of interest is detected in a population is divided by the total number of copies of all the alleles at that particular genetic locus in the population to compute the allele frequency.

In a population, if individuals mate at random sampling if h1 has a frequency of 0.60, the frequency of h1h1 offspring is 0.36, in the population.

The frequency of alleles can be expressed as a decimal, a percentage, or a fraction. Allele frequencies vary from 0 (present in no people) to 1 (present in all individuals); in a population, all allele frequencies for a particular gene add up to 100%.

Therefore 0.36 is the frequency of h1h1 in the population for individuals at random mates for h1 frequency of 0.60 in the population.

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Which body system is depicted in the body

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Answer:

The human body is comprised of a series of complex systems, including the skeletal system, the respiratory and digestive systems, as well as the intricate networks of blood and lymph vessels, all controlled by the brain and nervous system. 

Item 3
Which statement is true of chloroplasts?


They transport glucose into the cell.


They are present in animal cells, but not in plant cells.


They convert light energy into chemical energy.


They convert the energy in glucose into a more usable form.

Answers

They convert light energy into chemical energy.

Answer:

They convert light energy into chemical energy.

Explanation:

Nitrites are added to foods to: a. prevent formation of carcinogens. b. change their color. c. improve their nutritive value. d. inhibit rancidity. e. improve their texture.

Answers

Nitrites are added to foods to inhibit rancidity. These compounds are used in the food, chemical and pharmaceutical industries.

Nitrites are conservant that prevent the growth of Clostridium botulinum and Listeria bacteria.

These bacteria (Clostridium botulinum and Listeria) are harmful to human health, thereby nitrites must be added to foods.

In meats, nitrites also exhibit some other beneficial properties which include the pink color, antioxidant properties, and savory flavor.

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Which of the following statements is TRUE?

*Thin myofilaments contain actin, tropomyosin, and troponin.
Thick myofilaments contain myosin and tropomyosin.
Thin myofilaments contain myosin.
Thick myofilaments contain actin, tropomyosin, and troponin.

Answers

Answer:

a. Thin myofilaments contain actin, tropomyosin, and troponin.

Explanation: is correct/post protected

the type of voltage-gated channel that possesses an inactivation gate that temporarily closes after the channel is active is the

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The sodium channel possesses an inactivation gate that temporarily closes after the channel is active.

In neurons, sodium channels are responsible for the ascending phase of the action potential (depolarization).

Characteristically, this channel has two transmembrane voltage-dependent gates.

When the membrane is depolarized to the threshold, both gates are activated, but since one of them opens rapidly while the other closes slowly, the channel remains open for less than 2-5 milliseconds.

Therefore, we can conclude that the sodium channel is responsible for the depolarization and possesses two gates which one temporarily closes after the channel is active.

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Which gas is produced as a result of cellular respiration.

Answers

Answer:

Carbon dioxide

Explanation:

Chemical to thermal to electrical current?Energy conversion of corn

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Answer:

A battery is a device that converts chemical energy contained within its active materials directly into electric energy by means of an electrochemical oxidation-reduction (redox) reaction. This type of reaction involves the transfer of electrons from one material to another via an electric circuit.

How do rocks become igneous rock?

Answers

Answer:

Igneous rocks form when magma (molten rock) cools and crystallizes

Explanation:

So first when the sedimentary rock is formed and adds some heat pressure in which it turns to metamorphic rock, and after a long time heat + cool down which it will turn to igneous rock!

experiments with isotopes used as tracers showed that some fungi _____.

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Help plants by providing them with sugar.

3. Humans belong to the class of

A.Arthropoda
B.Tetrapoda
C. Mammalia

Answers

Answer:

i think its c but im not sure

Explanation:

sorry if its wrong

Answer: C. (Mammalia)

We, Humans, are part of the mammal class.

Mammalian mammals are a group of vertebrate animals that belong to the Mammalia class.

Which of the following cells is responsible for maintaining bone and the correct levels of oxygen and minerals?

Answers

Answer:

c. Osteocytes

Explanation: is correct

Which animal has a digestive system most similar to a human?

1. cow

b. jellyfish

c. octopus

d. wolf

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Answer:

Explanation: The cow is a ruminant animal. Ruminant animals are known for the unique way their digestive systems work.

how do you propagate trees​

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Answer:

The simplest method of propagating a tree vegetatively is rooting or taking cuttings. A cutting (usually a piece of stem of the parent plant) is cut off and stuck into soil.

Remove any flowers or fruit on the cutting. Trim the stem to just below where the bottom most leaf meets the stem. On each of the leaves on the stem, cut off half of the leaf. Put the end to be rooted.

which statement is true regarding the school circular respiration

A. the reactants of circular respiration are similar with the reaction of photosynthesis

B. the products of circular respiration are similar with the products photosynthesis

C. the reactants of circular respiration are obtained from the products of photosynthesis

D. circular respiration occurs on the and autotrophs photosynthesis occurs only in heterotrophs ​

Answers

Answer:

I think A or B, but I really think it's A, you should try it.

Explanation:

Hope it helps you:>

please help asap!!!! will be marked as brainlist !! do not spam or u will be reported

Answers

Answer: water cycle: evaporation condensation precipitation

               carbon cycle: fossil fuel combustion, co2 in atmosphere, photosenthises prob spelled wrong

Explanation nitrogen cycle bacteria, nitrogen separting bacteria n2, nitrogen in the air, nitrate salts back to bacteria

pro wrong but there  ya go

The water cycle, also known as the hydrologic cycle or the hydrological cycle, is a biogeochemical cycle that describes the continuous movement of water on, above and below the surface of the Earth.


The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. ... Along with the nitrogen cycle and the water cycle, the carbon cycle comprises a sequence of events that are key to make Earth capable of sustaining life.


The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.


Hope this helps! Bye♡︎シ

Can climate changes be linked only to the greenhouse effect? Why or why not?

Answers

An increase in the atmospheric concentrations of greenhouse gases produces a positive climate forcing, or warming effect. ... The warming effect associated with carbon dioxide alone increased by 36 percent

1. Which of the following statements regarding enzymes is TRUE?
A. Are affected by factors such as temperature and pH
B. Are made up of proteins
C. Function as biological catalysts
D. All of the above

Answers

Answer:

D. All of the above

Explanation:

Enzymes are proteins, act as biological catalysts, and are sensitive to factors like pH and temperature.

Hope this helps!

What is paresthesia?

Answers

Answer:

b. The _________ when a nerve is under pressure for too long

Explanation: is correct

Brainly notice: It appears that your answer contains either a link or inappropriate words. Please correct and submit again!

Paresthesia can be caused by disorders affecting the central nervous system, such as stroke and transient ischemic attacks (mini-strokes), multiple sclerosis, transverse myelitis, and encephalitis.

lab report interdependence of organisms. plz someone tell me the project i need everything not just the data

Answers

Answer:

Introduction Purpose: Explore the interdependence of organisms by  

performing an experiment with lima bean plants and earthworms. Question: How can the presence of one species benefit another in  

the same ecosystem?  

Hypothesis: If plants grow in soil containing worms, then the  

plant growth will be greater, because worms help decompose organic matter and distribute it through the soil in a form that plants can use.

Explanation:

When a star becomes a red giant it will
1.shrink
2.shrink and cool
3.shine hotter
4.expand and cool

Answers

Stars spend approximately from a few thousand up to 1 billion years as a red giant. The helium in the core eventually runs out and the fusion process stops. The star then shrinks until a new helium shell reaches its core.

Therefor the answer is 2.shrink and cool

I hope this helps!

Answer:

Shrink an cool I took the test

11. What are the proteins used in active transport called?​

Answers

In active transport carrier proteins are used.

The answer  carrier proteins

What controls circadian rhythms in humans? Explain how this process works.

Answers

Circadian rhythms are regulated by small nuclei in the middle of the brain. They are called the suprachiasmatic nuclei (SCN). Nuclei act as control centers. The SCN are connected to other parts of the brain.

please help








help help​

Answers

Answer:

m= p+e

Explanation:

____________ results from chemicals in car exhaust reacting with the sunlight.

Acid Rain

Contaminant fog

Smog

Greenhouse Effect

Answers

Answer:

smog

Explanation:

Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.

Glucose and oxygen make what?

Answers

It makes Carbon dioxide

a cockroach is a fast-moving insect. how can an animal with an open circulatory system be so speedy?

Answers

Cockroaches have 6 legs and each leg has 3 knees, 18 knees in total. Since the cockroach has so many joints in its legs its can accurately pick up speed when running away from something

An animal like a cockroach with an open circulatory system is so speedy because in these organisms tracheal system delivers oxygen throughout the body.

What is an Open circulatory system?

An open circulatory system may be characterized as a type of circulatory system in which blood vessels are completely absent and blood generally flows freely through the cavities of the body. This type of circulatory system is present in arthropods.

Due to the absence of blood vessels, the flow of blood is extremely high in animals that have an open circulatory system. Apart from this, in cockroaches, oxygen is carried out through the tracheal system because of the absence of the lungs. So, it makes the process so speedy.

Therefore, an animal like a cockroach with an open circulatory system is so speedy because in these organisms tracheal system delivers oxygen throughout the body.

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what protects the lining of the stomach from acidic gastric juices

Answers

The stomach lining is protected by mucus !

Answer:

The Mucus that is around the inner lining

Explanation:

How was Earths climate changed over time?

Answers

Answer:

Explanation:

These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun's intensity, variations in the orbit of Earth, and volcanic eruptions.

19. Dax just completed a report on car transportation. He concluded that gasoline
prices will likely rise significantly in the years to come and recommends lower-
cost car transportation for the future. Dax's younger sister, Ava, just completed a
report on air pollution. Ava concluded that gasoline-powered cars cause too
much pollution and recommends that they should not be used in the future.
Which of the following is a solution for the future that would follow both Dax's
and Ava's recommendations?

Answers

A solution for the future that would follow both Dax's and Ava's

recommendations will be to develop cars that run on fuels that pollute less

and cost less than gasoline.

The use of other fuels such as electricity is cheaper than gasoline and will

help tackle the problem of the rising cost of gasoline.

The use of alternative sources doesn't involve the release of gases such as

carbon monoxide etc which pollutes the environment as carbon isn't burned

when electricity is used.

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Answer:

development of cars that run on fuels that pollute less and cost less than gasoline

Explanation:

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