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Nutka1998 [239]
3 years ago
9

What are the answers to the questions from #1-13

Biology
1 answer:
Mashutka [201]3 years ago
4 0
Food is usually kept from entering your trachea by the Epiglottis
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Hi! I am confused on how to do Q2. Anyone doing A-levels can solve that questions and explain? Thanks! <3
riadik2000 [5.3K]

Answer:

i) Glucose

ii) β(1-4) glycosidic bonds.

iii) Oxygen

Explanation:

Cellulose is an important structural carbohydrate found in plants. It forms a major component of the plant cell wall.

Cellulose is a polysaccharide formed by monomers of glucose.  These glucose monomers are joined together by covalent bonds called β(1-4) glycosidic bonds, which means that the 1st carbon of one glucose is bound to the 4th carbon of the next glucose. To make this arrangement,  every other glucose molecule in cellulose is inverted, which you can see in the diagram.

Glucose monomers contain carbon, hydrogen, and oxygen only. If you look at the pattern of the molecule (remembering every second glucose is inverted), you can see that Z must be O.

The functional group denoted by Z is oxygen. The OH groups on the glucose from one cellulose chain form hydrogen bonds with oxygen atoms on the same or on another chain, holding the chains firmly together and forming very strong molecules - giving cellulose its strength.

4 0
3 years ago
How do enzymes affect the energy needed for getting a reaction going in the cell?
Rina8888 [55]

<span>Enzymes</span> are proteins that allow certain chemical reactions to take place much quicker than the reactions would occur on their own. Enzymes function as catalysts, which means that they speed up the rate at which metabolic processes and reactions occur in living organisms. Usually, the processes or reactions are part of a cycle or pathway, with separate reactions at each step. Each step of a pathway or cycle usually requires a specific enzyme. Without the specific enzyme to catalyze a reaction, the cycle or pathway cannot be completed.

3 0
3 years ago
How cold is it on pluto
Nitella [24]
It falls to minus 387 degrees Fahrenheit <span />
8 0
4 years ago
Describe how disagreement exists in science
12345 [234]

Answer:

Explanation:

when people have different opioions on what they believe in.

3 0
3 years ago
What is the main difference between organisms that share many characteristics and organisms that do not?
Usimov [2.4K]

Answer:

The more derived characteristics organisms share,the greater their degree a kinship. For instance,a derived characteristic in plants is the presence of the vascular tissue.Although all organisms share similar traits.

Explanation:

Hope this helps.

8 0
3 years ago
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