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Mariana [72]
3 years ago
7

Explain the effects of pre-heating on Pepsi activity​

Biology
1 answer:
sladkih [1.3K]3 years ago
5 0

Answer:

Explanation:

Enzymes are biological catalysts; catalysts are substances that increase the rate of chemical reactions without being used up (BBC, 2010), without these catalysts it would take an extremely long time for these reactions to take place. The enzyme used in this particular experiment was pepsin; pepsin is a zymogen of pepsinogen. Pepsinogen is activated by hydrochloric acid, which is released from parietal cells in the stomach lining. The hormone gastrin and the vagus nerve trigger the release of both pepsinogen and hydrochloric acid from the stomach lining when food is ingested. Hydrochloric acid creates an acidic environment, which allows pepsinogen to unfold and cleave itself in an autocatalytic fashion, generating pepsin. (Life Science Network, 2010)

A lot can be learnt about enzymes by studying the rate of enzyme catalyzed reactions, these rates of reaction can be studied in various ways. In this experiment, using a range of different temperatures, the enzyme pepsin will be mixed with egg albumen. This is high in protein and bound to the dye Coomassie blue to gain a light absorbance reading using a spectrophotometer and in effect see how much protein has been digested by the pepsin.

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(20 points!) (brainliest) please help <3
Ede4ka [16]

Answer:

part A is the answer

Explanation:

The tympanic cavity is an air chamber; it contains a chain of movable bones which transmit the vibrations of the tympanic membrane across the cavity to the middle ear.

3 0
2 years ago
I will give BRAINLIEST!!!!!!
Svetllana [295]
Which level of organization describes the stomach?
B.) organ
Where is starch in food first digested in the digestive system?
The mouth and small intestine both have a part in digesting starch, but the keyword is "first" so of course that would be:
A.) mouth

Hope this helped. I believe I am right, but correct me if I'm wrong. :)
6 0
3 years ago
Read 2 more answers
I Will DEEM BRAINLIEST!!!!! What problem did run into the most when you tested your prototypes? What did you do to fix this prob
mixas84 [53]

Answer:

Explanation:

1. Visual design

Users can be distracted by the lack of visual design on a prototype because wireframes and other low-fidelity prototypes are very basic. This can cause users to comment on the lack of design and colour and distract both themselves and the researcher from the true goals of the project. The extent of this challenge depends on the level of detail within the prototype.

How to get around this: Ensure the user is aware at the start of a session that the website they are about to view is at an early stage of development and so does not look and feel like they may expect. The research may need to be explicit with some users and point out it is not the visual design that we are interested in for today.

2. Partial journeys

Prototypes often cover only partial user journeys, meaning that users may have to be dropped into a journey at a specific point and may lose the context of the overall task or what they would be coming on the site to do.

How to get around this: As well as creating tasks which set the context, consider including some time at the beginning of the session for users to explore the prototype as they would normally do on that website/app, without giving them long enough to discover the prototype journeys. Introductory questions can also be asked at the start of the session to position the user in the right frame of mind for what the prototype will allow them to do, therefore helping to provide some context alongside the task wording.

5 0
2 years ago
Which one of the following hormones stimulates stem elongation and pollen tube growth? A. auxin (IAA. B. ethylene C. gibberellin
Lubov Fominskaja [6]

Hormones stimulates stem elongation and pollen tube growth gibberellins.

A type of plant and fungus hormone is gibberellin. Although its function in the development of fungi is not fully understood, extensive research has been done on it in plants. The other four major groups of plant hormones are auxins, cytokinins, ethylene, and abscisic acid. Gibberellin is one of these hormones. Gibberellin can make seeds come out of dormancy, lengthen cells, promote division, and even play hormonal and signaling roles in the fruiting and senescence processes. Numerous areas of the plant produce different types of gibberellin molecules. There are currently more than 100 distinct gibberellin molecules.

Learn more about Gibberellin here:-

brainly.com/question/20601611

#SPJ4

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1 year ago
Which of these answered are the correct one ?
yaroslaw [1]
Pretty sure it’s indigenous species
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