Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
![Question 7
1 pts
Kate explains to Lisa the reason proteins have a globular shape in water.
Which of the following is correct?
O Proteins are made of nucleic acids that don't like water.
Some amino acids in a protein are hydrophilic and form a core to "hide" from
water.
Some amino acids in a protein are hydrophobic and form a core to "hide" from
water.
Proteins can have any random shape and still be able to do their job in the cell.
Water breaks down proteins.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fab973f4e-76a9-4f17-ad5d-6f0c6bf9b8cd%2F002f7072-d2cb-4036-b437-fc7f872f4ec3%2Fpzuidam_processed.jpeg&w=3840&q=75)
![Question 9
2 pts
Kate and Lisa discuss photosynthesis. Which of the following statements
is/are correct about photosynthesis? Choose all the apply.
CO2 is an input.
Glucose is an output.
02 is an output.
Water is an output.
Water is an input.
Glucose is an input.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fab973f4e-76a9-4f17-ad5d-6f0c6bf9b8cd%2F002f7072-d2cb-4036-b437-fc7f872f4ec3%2Fnyobe9_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Protein molecules have a hydrophobic component and a hydrophillic component. The hydrophillic component interacts with water molecules and develops intermolecular forces which give the characteristic globular shape to proteins in water. The core is made up of hydrophobic core since it repels water. Hence option (C) is correct.
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