Metabolic Reactions Lessons 1-6 Part 2 Question Preview (ID: 62747)
Metabolic Reactions.
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How does this help us confirm or revise the ideas we have developed so far about why glucose (sugar) can go through the surface of the dialysis tubing but starch cannot?
a) The starch molecules are too big to fit through the gates in the surface of the dialysis tubing.
b) The starch molecules are too small to fit through the gates in the surface of the dialysis tubing.
c) The starch molecules are too big to fit through the gates in the bottom of the dialysis tubing.
d) The glucose molecules are too big to fit through the gates in the surface of the dialysis tubing.
If the surface of the small intestine has a similar structure, what can we say about the size of the molecules that can pass through/across its surface?
a) The molecules that pass through the walls must be smaller than the wall’s gates/openings.
b) The molecules that pass through the walls must be larger than the wall’s gates/openings.
c) The molecules that pass through the walls must be smaller than the water molecules
d) The molecules that pass through the walls must be larger than the water molecules
What’s happening to the complex carbohydrate in a healthy body (green bars) over time, and how did you explain it?
a) It got less and less and was zero in the large intestine. We think it is disappearing or maybe breaking down.
b) It continued to gain size as it made it to the healthy large intestine
c) It continued to get smaller but was still present in the large intestine
d) It continued to get smaller and was zero in the stomach.
What’s happening to the complex carbohydrate in a healthy body (green bars) over time, and how did you explain it?
a) M’Kenna’s decreased, too, but didn’t go down as much as the healthy data. She still had some in her large intestine. We thi
b) M'Kenna's never decrease, it stayed the same throughout the entire process
c) M'Kenna's continued to decrease but was less than the data of the healthy data.
d) M'Kenna's continued to decreased and became zero and much less than the healthy
Did the same things happen to food in the small intestine and the large intestine?
a) No. In the small intestine we see a lot of different molecules, but in the large intestine we just see fiber and water in a
b) Yes. In the small intestine we see a lot of different molecules, but in the large intestine we just see fiber and water in a
c) No. In the large intestine we see a lot of different molecules, but in the mall intestine we just see fiber and water in a
d)
Does this make you think that the small and large intestines have similar or different functions? Why or why not?
a) I think they might be different things because there are different things happening in both locations.
b) No, i think they have the same functions but that something is wrong in one of them
c) They have somewhat similar functions just that one works harder than the other one.
d)
If the large food molecules, like complex carbohydrates, are gone when they reach the large intestine, what do you think happens to them?
a) complex carbs could get absorbed somewhere besides the small intestine, they break down through chemical reactions
b) they break down in the mouth and don't make it to the small intestines
c) the stomach acids attach the complex carbs not allowing all of them to make it to the small intestines
d) complex carbs don't get absorbed in the small intestines, they do that in the large one
What substance seems to remain constant (unchanged) as it travels through the digestive system?
a) fiber
b) amino acids
c) complex carbohydrates
d) protien
What did you learn about spit?
a) it is saliva, made up of water and other chemicals, made in salivary glands, 2-4 pints a day, enzyme called amylase
b) it breaks down all of the food molecules in the mouth
c) it is a part of the mechanical digestion that happens throughout the digestive process
d) it is made up of purely water and that is why is doesn't break any of the food molecules down.
If we know that chemical reactions are why old substances can turn into new substances, what else do we know about what happens to the atoms in the molecules that we start out with during any chemical reaction?
a) Atoms in substances rearrange in chemical reactions to form new substances.
b) Atoms in substances move around but don't form a new substance
c) Atoms in substances can't rearrange in a chemical reaction because the chemical destroys them
d) Atoms in substance can't rearrange in a chemical reaction because once they form a bond, it can't be broken
How do these patterns help explain why the amounts of one type of molecule (e.g., a complex carbohydrate) might be decreasing by the same amount as another type of molecule is increasing (e.g., glucose) in the foods we eat as they travel through
a) they represent how certain chemical reactions can be possible, breaking apart smaller pieces would get you smaller molecules
b) It just shows that they can attract to one another but they don't make something new.
c) It shows that when there is a chemical reaction, they loose certain pieces that they can't get back
d) It represents that chemical reactions really don't happen, the molecules just loose their connectivity and move some
Do chemical reactions occur in the mouth?
a) yes, bigger food molecules are broken down into smaller molecules, complex carbs into glucose.
b) reactions happen in the mouth but only mechanical reactions
c) no, there are not any chemical reactions happening in the mouth
d) nothing happens in the mouth except for chewing
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