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Vlad1618 [11]
3 years ago
11

Identify the organelle where photosynthesis takes place. Image of a plant cellshown with letters A to H showing various organell

es. A points to the mitochondria. B points to the Golgi apparatus. C points to the nucleus. D points to endoplasmic reticulum. E points to the chloroplast. F points to the cell wall. G points to the cell membrane. H points to the vacuole. B C D E
Biology
2 answers:
Vesna [10]3 years ago
8 0

Answer:

The correct answer is E, I took the test

____ [38]3 years ago
7 0

Answer:

E

Explanation:

A chloroplast is the organelles in which photosynthesis takes in plants. The chloroplast has thylakoid lamellae that occasionally arrange itself into stacks called grana where there are photosystem units that have chlorophyll pigment. The chlorophyll pigments tap energy from the photons of sunlight and use it for photophosphorylation.

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The probability of a ___________ channel being open is controlled by the membrane potential.
Anna11 [10]

Answer:

(b) Voltage gated

Explanation:

The cell membrane acts as a barrier that separates two aqueous media of different composition, the extracellular and the intracellular, regulating its composition. Most of the liposoluble drugs and solutes, when not ionized, directly cross the cell membrane through a passive diffusion process, which facilitates the passage of the medium where it is more concentrated to the one that is more diluted. The difference in concentration between the two media is called the concentration gradient, and diffusion will continue until this gradient is eliminated. According to Fick's law, the speed of this process will be much faster the higher the concentration gradient and the liposolubility of the molecule and the smaller its size.

More hydrophilic molecules, such as ions, are immiscible in membrane lipids and pass through specific specific transport mechanisms. In some cases, ions pass through hydrophilic pores called ion channels, and in others a favor of their concentration gradient is transported by binding to the transporter or transporter proteins. Both transport systems are passive and therefore do not consume energy. The great advantage is that the ion channels allow the flow of ions through a much higher speed than that of any other biological system. The flow of ions through each channel can be measured as an electric current, which is capable of producing rapid changes in membrane potential.

8 0
3 years ago
How are energy inputs and outputs related to chemical reactions
GREYUIT [131]

The large number of areas covered by the chemical energetics can be explained by the different forms in which chemical energy can be released: heat and combustion work, electrical energy in electrochemistry, radiant energy in chemiluminescent systems.

The chemical energy provided by a reaction reflects the energy balance associated with the electronic modifications suffered by the species involved.

From an energy point of view, a chemical reaction between molecules can be schematized in two stages. The first requires a supply of energy and corresponds to the rupture of the bonds of the reactant molecules with release of the atoms which constitute them.

The second releases energy and concerns the creation, by recombination of these atoms, of new bonds entering the structure of the reaction molecules.

As a general rule, the energy released in the second stage is greater than the first. We are talking about exothermic reaction. The difference between these two energies (reaction enthalpy) measures the amount of chemical energy transferred to the external environment.

It is conceivable that this quantity translates, not only the number, but also the strength of the connections involved.

6 0
2 years ago
Environmental microbiology... A. ...shows great promise, but has not yielded any significant discoveries yet. B. ...includes met
Sveta_85 [38]

Answer:

B. ...includes methods like metagenomics, which sequence and interpret all the DNA in an environmental sample.

Explanation:

Environmental microbiology is the science in charge of the study of microorganisms, small living things known as microbes. Study organisms that are only visible through a microscope, such as prokaryotic and simple eukaryotic organisms.

Metagenomics is the study of a collection of genetic material from a mixed community of organisms. Metagenomics usually refers to the study of microbial communities. It is generally used when studying microbial communities in which one microorganism cannot be separated from another.

5 0
2 years ago
¿Como se originó la vida según la teoría de la panspermia?
zheka24 [161]

Answer:

No hablo español, así que pido disculpas por cualquier error.

 La teoría de la panspermia, que sugiere que la vida en la Tierra no se originó en nuestro planeta, sino que fue transportada aquí desde otro lugar del universo.

7 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!!!!!!!!!!
denis23 [38]

Answer: research it? i dont know

Explanation:

4 0
3 years ago
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