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romanna [79]
3 years ago
10

How does light get here to

Biology
1 answer:
Papessa [141]3 years ago
6 0
Light travels as a wave. But unlike sound waves or water waves, it does not need any matter or material to carry its energy along.
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5. Cuboidal cells have a prominent round?
dmitriy555 [2]

Answer:

In simple cuboidal epithelium, the nucleus of the box-like cells appears round and is generally located near the center of the cell.

6 0
3 years ago
The various hormones secreted by the anterior pituitary that regulate the secretion of hormones from other endocrine organs are
Nat2105 [25]

Answer:

b. tropins

Explanation:

The anterior pituitary gland secretes many hormones. Some of these hormones regulate the secretion of hormones from other endocrine glands. These hormones are called tropins. For example, thyroid-stimulating hormone (TSH) is a tropin from anterior pituitary that makes the thyroid gland to release its hormones. Adrenocorticotropic (ACTH) and gonadotropins from anterior pituitary gland target the adrenal cortex and gonads respectively.

3 0
3 years ago
The Great Electron Chase: Describe the flow of electrons from rain falling on your strawberry garden into the strawberry plant (
JulijaS [17]

Answer:

As the rain water is absorbed by the strawberry roots to the leaves, the first step of light independent stage of photosynthesis; Photolysis takes place.

                               H20 = 2H+ + 2e + 2O2.

Generally, the chlorophyll is made up of primary and accessory pigments in its photosystems I and II. These photosystems emitted their electrons through photo activation; these are picked up by electron acceptors; for photophosphorylation in ATPs synthesis. Therefore, these photosystems are positively charged. Hence, PI takes electrons from P II (since it is Cyclic photophosphorylation).Thus P1 is now stabilized, why PII is unstable. To regain its stability, it replaces its lost electrons from the electron of photolysis of water above. This is the electron from the rain water on the (stored in chlorophyll) strawberry. The electron from PI combines with H+and picked up by NAD to NADH. (2H+2e+NADP= NADH).

When the strawberry is consumed, it undergoes digestion and its cellulose metabolized to glucose (the electrons are trapped in the elements C,H,O in the glucose) which flows into the blood stream. As the individual undergoes cellular respiration the glucose with its electrons are the substrate. The glucose, undergoes substrate level phosphorylation (Glycolysis).These electrons are transferred from glucose to the new elements in pyruvate as glucose moves from one stage to another. The electrons are also transferred as part of  H picked up by NAD to NADH. They are transferred from pyruvate to Acetyl, as the latter forms Acetyl Co A with coenzyme A.  

The Acetyl CoA, enters the Krebs’s Cycle, and as, moves from one step to another, these electrons are transferred from one intermediate to another. They are eventually transferred by NADH, FADH2 into the matrix of the mitochondria, where they splits from hydrogen atoms, and carried by electron carriers. As they move from one carries to another, PMF is generated which pumps the H+ across into the inner membranes, to generate the electrochemical gradients for ATPs synthesis, as the protons returns to the matrix.

When these electrons reached the end of the carrier molecule, they are accepted by oxygen the final electron acceptor, to form water. These electrons is transported as water, to the kidney where they are pass through the stages of glomerular filtration, reabsorption, secretion before they are emptied in urine as waste.  

Explanation:

4 0
3 years ago
What do cyclins regulate?
GalinKa [24]

Answer:

Cyclin is a family of proteins that controls the progression of a cell through the cell cycle by activating cyclin-dependent kinase (CDK) enzymes or group of enzymes required for synthesis of cell cycle.

5 0
3 years ago
Read 2 more answers
An energy transformation is
Sonbull [250]
Energy can not be created nor destroyed, leaving the only possible answer to be "b," when energy changes from one form to another.
3 0
3 years ago
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