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Akimi4 [234]
3 years ago
12

In your body, the outside "tube" that surrounds a cavity and inner "tube" is derived from the ________. see section 30.2 ( page

616) .
Biology
1 answer:
mrs_skeptik [129]3 years ago
8 0
<span>This "tube" is derived from the endoderm. The endoderm is the innermost germ layer present in the earliest stages of the developing embryo. These cells will go on to become the epithelial lining of many systems as the embryo further develops.</span>
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Neurons have special proteins in their cell membranes that allow them to generate electric current. Are these proteins most like
V125BC [204]

Answer:

Sodium-Potassium pumps (proteins that help neurons generate electricity) are produced by ribosomes on the rough endoplasmic reticulum (ER).

Explanation:

Sodium-Potassium Pump (NA+/K+):

The Na+/K+ Pump is a transmembrane channel protein, responsible for maintaining the concentration gradient of sodium and potassium ions in the intra and extracellular environment. This is achieve by pumping 3 Na+ outside and 2 K+ inside the cell at the cost of one ATP. In neurons, these channels help in generating an action potential across the cell membrane that gives rise to a nerve impulse.

Production of Transmembrane proteins:

All membranes and their proteins are produced by  the ribosomes on the rough ER. The rough endoplasmic reticulum contains the enzymes required for lipid synthesis; and as cell membranes are made of lipids, the ER is the most suitable location for synthesis. Membrane proteins, particularly, transmembrane proteins like the Na+/K+ pump possess hydrophobic surfaces that don't dissolve in the cytoplasm but readily attach to the ER surface from where they can be transported wherever required.

7 0
3 years ago
Which of the following is not a step involved in critical thinking?
Dima020 [189]
Answer: i think it’s c
6 0
3 years ago
Modeling the Calvin Cycle Exploration
galina1969 [7]

Explanation:

The process of photosynthesis is energy-storing because the process converts light energy into chemical energy, which is stored in the bonds of glucose.

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

Further Explanation:

Photosynthesis is a chemical pathway, integral to plant and other primary producers producing energy. Energy is produced from light, water and carbon dioxide in the form of glucose molecules while the oxygen is emitted.

Photosynthesis, which occurs in several complex steps, is a rate-limited reaction, depends on several factors including concentration of carbon dioxide, ambient temperature, and light intensity; energy is recovered from photons, i.e. light particles, and water is used as a reducer. For those removed from photosystem II, water supplies the chlorophyll in plant cell with replacement electrons.

Therefore, water (H2O) split into H+ a by light during photolysis into H+ and OH-acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ionsand produces molecules of the energy storage moleciule ATP through an electron transport chain. This occurs in the thykaloids, where pigment molecules like chlorophyll reside.

Later, in dark reactions, NADP and NADPH are used in the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules. These hold energy in their bonds, which can be released in respiration in the mitochondria.

Glucose production occurs after G3P production- a molecule of G3P, goes to the cytoplasm from the cycle, to form complex molecules and simple sugars like glucose.

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

 

5 0
3 years ago
Explain how an evergreen tree stores water during months of little rain.
Troyanec [42]

Answer:

i think they are orignally from cold areas so they store water and moisture in there needles. and they stay green year round.

Explanation:

8 0
3 years ago
What sort of farming defined the first type of agriculture?
andriy [413]

Answer:

Agriculture and domestication probably started in the Fertile Crescent (the Nile Valley, The Levant and Mesopotamia). ... People probably started agriculture slowly by planting a few crops, but still gathered many foods from the wild. People may have started farming because the weather and soil began to change.

Explanation:

3 0
3 years ago
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