HELPPPPPP ITS SCIENCE BTW pls help i will give brainliest

MAIN IDEA: Life depends on hydrogen bonds in water. Choose whether the statement is true or false. 1. true / false Polar molecul

sukhopar [10]

Answer:

1. False

2. True

3.True

Explanation:1. Polar molecules have two regions but the regions are with a partial +tive charge and a partial -tive charge

2. Water is a polar molecule because of the partial +tive and partial -tive charge hence it dissolves polar solute(solute with ions)

3.The more electronegative region bonds with an electrophile to form a weak bond(Hydrogen bond)

5 0

3 years ago

Proteins may be classified according to their three-dimensional shapes. Determine whether the following examples and description

m_a_m_a [10]

Answer:

-often function as enzymes or transport proteins ⇒ globular proteins

-peptide chains arranged in long strands, or fibers ⇒ fibrous proteins

-peptide chains highly folded into spherical shapes ⇒ globular proteins

-keratins ⇒ fibrous proteins

-hemoglobin ⇒ globular proteins

-water-soluble ⇒ globular proteins

-collagens ⇒ fibrous proteins

-insoluble in water ⇒ fibrous proteins

-generally function in structure and support ⇒ fibrous proteins

Explanation:

Fibrous proteins are composed by large polypeptide chains which interact each other and form large structures. They have water insoluble and have structural and protection functions- they are components of cells and tissues. Examples are: collagen, fibronectin, keratin, elastin, actin.

Globular proteins have a spherical compact structure in which hydrophobic aminoacids are buried inside the structure and hydrophilic aminoacids (which can interact with water molecules) are exposed to the exterior medium. For this, they are water soluble. They have often transport and catalytic functions. For example: hemoglobin, mioglobin, albumin, enzymes in general.

7 0

3 years ago

What is meant by the EA of a reaction? How do enzymes affect the EA and the DG of a reaction?

zepelin [54]

Answer:

Activation energy may be defined as the minimum amount of the energy required to convert the substrate into the product. The higher the activation energy of a reaction, the slower the speed of a reaction.

The enzymes decreases the activation energy of the reaction and increases the effective collision between the substrate. The enzymes does not change the DG (delta G) or free energy of the reaction. The enzymes maintain the equilibrium of the reaction by increasing the equal amount of the forward and backward rate of the reaction.

4 0

3 years ago

The cell wall gives the cells... -Structure -Energy -Protein -Photosynthesis

Scorpion4ik [409]

It gives structure:) and I plz get Brainly:):(

8 0

3 years ago

How does the structure of water contribute to its unique properties

frutty [35]

So basically water is a polar molicule. So when it comes to the structure, water is able to form many hydrogen bonds and the way the atoms are able to bond together adds to the water's special properties.

8 0

3 years ago