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12345 [234]
3 years ago
5

Before starch can enter a cell, it must be

Biology
2 answers:
yanalaym [24]3 years ago
7 0
C. Digested to form simple sugars
SOVA2 [1]3 years ago
6 0

Answer:

C.

Explanation:

Starch are macromolecules that are made of monomers that are simple sugars. Cells are microscopic and they can only absorb small substances. Therefore starch needs to be digested in other words broken down into simpler substances that can be taken in by cells. Therefore before starch can enter a cell it must be 3) digested to form simple sugars

  Mark me brainlyiest :)

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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
2 years ago
What organs use mechanical digestion?
navik [9.2K]
Mouth, throat, small and large intestine
3 0
3 years ago
Can you use mass alone to predict whether an object will sink or float? Explain.
natima [27]

Answer:

No, you need both mass and volume to determine its desity to see if it can float.

Explanation:

Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume.

8 0
2 years ago
Why are shape, weight, mass, size,<br> and texture NOT considered properties?
goldenfox [79]

Answer:

Density is an intensive property. This means that regardless of the object's shape, size, or quantity, the density of that substance will always be the same. ... It is because density in an intensive property of matter. So they are not considered properties.

Explanation:

8 0
2 years ago
The food plants is...<br><br> A. Carbon dioxide <br> B. Oxygen<br> C. Water<br> D. Glucose
xxTIMURxx [149]
Your answer is carbon dioxide because Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. ... During the process of photosynthesis, plants release oxygen into the air.

I hope this helps
5 0
3 years ago
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