Scientists evaluate scientific evidence by using what

1 answer:

4 0

Um not sure if this is correct or not (trying to remember from last year) but you would analyse the evidence, try to make an interence, fork a hypothesis and then test that hypothesis with an controlled experiment

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Large molecules, such as glucose, that cannot cross the lipid bilayer can still move across the membrane through a type of passi

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Facilitated diffusion. It is a passive transport mechanism in which carrier proteins shuttle molecules across the cell membrane without using the cell’s energy supplies. Instead, the energy is provide by the concentration gradient, which means that molecules are transported from higher to lower concentrations, into or out of the cell. The carrier proteins bind to glucose, which causes them to change shape and translocate the glucose from one side of the membrane to the other. Red blood cells use facilitated diffusion to absorb glucose.

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It is the motion activation part of the brain, if that makes any sense.

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Which is the primary consideration when preparing to administer thrombolytic therapy to a patient who is experiencing an acute m

mr Goodwill [35]

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3 years ago

The net energy yield from this pathway, where glucose is broken down through several steps forming pyruvate, is ________ molecul

stepan [7]

Answer:

2 molecules of ATP and 2 molecules of NADH

Explanation:

Glycolysis is the first step of cellular respiration (break down of glucose to extract energy) which occurs in the cytoplasm. Glycolysis is a pathway common to all living organisms- prokaryotes and eukaryotes, as it does not require oxygen to occur.

Glycolysis occurs in two major phases (ten steps) requiring 10 enzymes catalyzing each step; the energy-requiring phase and the energy-requiring phase.

In the energy-requiring phase, the starting molecule (glucose) gets rearranged in a series of chemical reactions, and two phosphate groups gets attached to it producing fructose-1,6-bisphosphate which is unstable, This modified sugar then splits in half due to its instability to form two different but inter-convertible phosphate-bearing three-carbon sugars (Dihydroxyacetonephosphate, DHAP and Glyceraldehyde-3-phosphate, G3P). Because the phosphates used in these steps come from 2 ATP molecules, 2 ATP molecules get used up in this phase

All the DHAP molecules get converted to G-3-P in order to enter the next phase.

In the energy-recovering phase, the 3-carbon sugar (G3P) is converted into another three-carbon molecule called pyruvate, through a series of reactions. In these reactions, two ATP and 1 NADH molecules are made. This recovery phase occurs twice (one for each of the two isomeric three-carbon sugars, DHAP and G3P). Hence, a total of 4 ATP and 2 NADH molecules are produced in this phase.

Overall, Glycolysis converts one glucose (six-carbon) molecule to two pyruvate (three-carbon) molecules and a net release of 2 ATP molecules (4 overall - 2 used) and 2 NADH molecules.

3 0

3 years ago

algol13

The enzyme will be transported to either the cytoplasm or the mitochondria to perform the functions.

<h3><u>Explanation:</u></h3>

Cellular respiration is the process by which a living cell burns nutrients like glucose, fats, or even proteins to produce energy molecules namely ATP to perform its daily works. This cellular respiration, which is mainly aerobic, takes place both in cytoplasm and mitochondria.

The glycolysis part of the cellular respiration takes place in the cytoplasm. The enzymes that take part in the glycolysis cycle reaches to cytoplasm from ribosome to perform.

But both the Kreb's Cycle and the Electron Transport chain take place in mitochondria. Kreb's Cycle takes place in mitochondria matrix and ETC takes place in inner mitochondrial membrane. Although ETC isn't a enzymatic process, Kreb's Cycle is fully enzymatic and the enzymes reaches from ribosomes inside mitochondria by transporters.

6 0

3 years ago