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Brilliant_brown [7]
4 years ago
6

Which statement best describes the role of the lungs?

Biology
2 answers:
frozen [14]4 years ago
8 0
I believe the answer is C.
Romashka-Z-Leto [24]4 years ago
4 0
C is the correct answer I believe
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Prokaryotes will take up foreign dna how is this characteristic used in genetic engineering
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Pieces of genes can be inserted into the genetic material of prokaryotes so that they will make the protein products encoded in the genes or copies of the genes themselves
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3 years ago
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Which microscope is used to observe a specimen that emits light when illuminated with an ultraviolet light?
jonny [76]

Answer: Fluorescence microscope

Explanation:

The basic function of a fluorescence microscope is to irradiate the specimen with a desired and specific band of wavelengths. A fluorescence microscope uses a mercury or xenon lamp to produce ultraviolet light. The light comes into the microscope and hits a dichroic mirror. The dichroic mirror reflects the ultraviolet light up to the specimen. The ultraviolet light excites fluorescence within molecules in the specimen. The objective lens collects the fluorescent-wavelength light produced. This fluorescent light passes through the dichroic mirror and a barrier filter, making it to the eyepiece to form the image.

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4 years ago
Name two nutrients that plants need.
artcher [175]

Answer:

Sunlight and water.

Explanation:

The sun is the plant's most important nutrient. Plants convert sunlight into sugars in order to grow. Water is needed in two ways, it serves as both a solvent for mineral salts that are carried inside plant cells, and it is an essential component of photosynthesis. The questioner might have asked "name one" so they don't have enough information to answer with any greater certainty - but the answer remains the same regardless of how many nutrients they ask about.

Minerals are also required by plants in order to function properly including calcium, potassium, iron, magnesium just to name a few minerals which are found in healthy nutritious produce!

5 0
2 years ago
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In response to high amounts of phosphate transport into the cell: a. PhoR is phosphorylated by the phosphate transporter protein
storchak [24]

Answer:

e. PhoU keeps PhoR bound to the phosphate transporter protein Pst

Explanation:

PhoU is a membrane protein known to regulate the transport of phosphate (Pi) between cellular compartments. It has been discovered that mutations in this protein cause lethality because the cell becomes incapable of controlling the intracellular levels of  Pi, this being toxic for the cell. PhoR is a histidine kinase/phosphatase. When the Pi level is considered to be a limiting factor, PhoR autophosphorylates at a histidine residue and then donates its phosphoryl group to PhoB. On the other hand, when the Pi level is high, this protein removes the phosphoryl group from phospho-PhoB. Finally, the Pst is a signal transduction protein that acts as a transporter capable of switching its conformation during the transport of PI.

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3 years ago
Si todas las células del organismo reaccionaran cómo lo hacen las del higado, se esperaría que ?
Marat540 [252]

Answer:

Si todas las células reaccionaran como el hígado, cada una tendría la capacidad de producir proteínas, colesterol, almacenamiento y liberación de glucosa, procesaría la producción de hemoglobina y amoníaco en la urea, purificaría las drogas y los desechos, regularía la coagulación, produciría los factores necesarios en la respuesta inmune e intervendría en la formación de bilirrubina, principalmente, sin embargo, debe tenerse en cuenta que una de las funciones principales es el suministro de energía, si cada célula tuviera reservas de glucosa por momentos de estrés, rápida regeneración celular ante las lesiones, las células no tendrían la capacidad de tener una adaptación específica de sus funciones y los procesos que son básicos para el funcionamiento humano serían destruidos, como un eritrocito cuya función es el transporte de oxígeno, no lo haría ser viable si se dedica a producir glucosa porque su estructura debería adaptarse a otra y sin oxígeno el cuerpo no vive, por lo que sería caótico que los sistemas sí no tienen una adaptación específica y son las mismas, aunque las reacciones hepáticas son vitales, requiere el apoyo de otros órganos con diferentes funciones para que estas tengan lugar, es de resaltar que el hígado tiene una respuesta rápida y efectiva ante el estrés, busca recursos para poder mantener funcionando muchos sistemas, si las células se adaptarán con la misma rapidez, se evitaría la aparición de muchas enfermedades.

3 0
3 years ago
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