Chemistry of Life Lecture

Question 1

Example of why chem is important to biology

Answer 1

Those who made hats went crazy, mercury, destroyed nerve cells

Question 2

Example of why chem is important to biology

Answer 2

Those who made hats went crazy, mercury, destroyed nerve cells

Question 3

What are waters unique properties due to?

Answer 3

The structure and interactions of its molecules

Question 4

What role does polarity play in water?

Answer 4

oxygen-more electronegative, pulls hydrogen, polar..positive and negative interact

Question 5

Example of why chem is important to biology

Answer 5

Those who made hats went crazy, mercury, destroyed nerve cells

Question 6

What are waters unique properties due to?

Answer 6

The structure and interactions of its molecules

Question 7

What role does polarity play in water?

Answer 7

oxygen-more electronegative, pulls hydrogen, polar..positive and negative interact

Question 8

What are waters unique properties due to?

Answer 8

The structure and interactions of its molecules

Question 9

What role does polarity play in water?

Answer 9

oxygen-more electronegative, pulls hydrogen- polar..positive and negative interact
Hydrogen bonds—-.> between molecules

Question 10

What are the emergent properties of water due to?

Answer 10

hydrogen bonding.

Question 11

What happens during cohesion?

Answer 11

Molecules stick together -like with like- don’t fall off, holding on to the molecule next to it on dime– add – the water drops when it reaches the threshold

Question 12

What happens during adhesion?

Answer 12

The clinging of one substance to another

Question 13

What do hydrogen bonds do?

Answer 13

Give properties

Question 14

Water is able to absorb or release large amounts of heat only with a light change to its own temperature..what is this due to?
why is it important?

Answer 14

H2O’s high specific heat.
huge bodies of water–>sun’s out—->water absorbs sun’s energy , temp of water doesn’t doesn’t rise much–> holds onto energy during the day–>night sun rises, maintains similar energy
*specific temp lattice-hydrogen bonds, molecules slow down enough-lockets of air make ice less dense than water–if this property didn’t exist creatures in lakes wouldn’t survive and ocean would be completely solid–>wouldn’t thaw, all life would die.
water acts as an insulator allows for climate where organisms can thrive.

Question 15

What is water’s versatility as a solvent due to?

Answer 15

polarity of the water molecule

m

Question 16

What makes carbon so special?

Answer 16

C-omplex molecule
A-bundant
D-irectly used as energy source
E-lectron configuration

Question 17

Differences between organisms are due to?

Answer 17

How you put Carbon with Nitrogen, Oxygen, etc.

Question 18

What are isomers?

Answer 18

Compounds with the same molecular formula but a different arrangement of atoms

Question 19

What are the different types of isomers?

Answer 19

1. Structural isomers
2. Cis-Trans (geometric isomers)
3. Enantiomers

Question 20

What is the difference between cis and trans isomers?

Answer 20

cis-the two xs are on the same side

trans-two xs are on opposite sides

Question 21

What are enatiomers?

Answer 21

Mere images of each other

Question 22

What are the biological implications of isomers?

Answer 22

isomers have different biological properties
enantiomers are critical in pharmaceutical industry
-molecules of drug in one shape–>isomers have a different effect on the body. must see if molecule can form mere image–>does it have unintentional effects

Question 23

Thaliodomide showed that?

Answer 23

one form can work to help treat one thing then it can have the power to bind with DNA–paving the way for a serious birth defect.

Question 24

What is the purpose of functional groups?

Answer 24

They participate in chemical reactions in a predictive manner.
They can cause a drastic change in function
One or more parts change a molecules function