2
3 A
3 B
4 A
4 B
100
What are the 6 essential elements in the human body?
CHNOPS
100
What properties of water allow plants to draw up water?
Cohesion
Adhesion
100
What organelle uses enzymes/pH to break down food?
Lysosomes
100
If a strand of DNA has 17% Thymine, what percentage would be guanine?
33%
100
What is the difference between Deoxyribose and Ribose sugars?
Deoxyribose doesn't have an oxygen on the 2' carbon.
200
This element has 2 paired and 1 unpaired electron in its 3rd shell.
Phosphorus
200
These may be inserted into the cell membrane to moderate the fluidity of the cell.
Cholesterol
200
This increases surface area in the golgi apparatus and mitochondria.
Cisternae
200
To what part of the DNA backbone are bases added to?
the 3'-OH
200
What is cut out of the Pre-mRNA during mRNA synthesis?
introns
300
What are the different chemical bonds in order of strength? (high to low)
Covalent
Ionic
hydrogen
Vaan der waals
300
A permeable membrane separates a beaker into 2 sides. the left side has a salt concentration of 1M and the right side has a concentration of 0.1M. Which way will the water diffuse?
To the left side till they reach equilibrium
300
Structures found only in plant cell.
Cell wall outside of cell membrane
Vacuoles for water uptake
Chloroplasts
Plasmodesmata
300
What kind of bond holds the Deoxyriboses together? What properties does this bond bring to DNA?
Phosphodiester bond
resistance to pH and temperature changes
300
This enzyme is highly accurate as there is not pre check for mistakes in the strand its working on.
RNA polymerase
400
You take a jar of fat out of the fridge and leave it on the counter for several hours, when you come back the fat is still solid, what kind of fat can you assume is in the jar?
saturated
400
If a substance is ionic will it dissolve in water?
Yes, ionic and polar molecules will dissolve
400
A DNA sequence codes for a Na/K pump for keeping the cell in a isotonic state. What pathway would the strand follow to reach its destination as a protein?
Nucleus -->Rough ER --> Golgi --> Plasma Membrane with vesicles in between
400
What is the complementary DNA sequence to
5'-ACCTGATAGGTTTTTG-3'
3'-TGGACTATCCAAAAAC-5'
400
The poly(A) Tail provides protects mRNA from degradation when attached to the 3' end. Given that mRNA is read 5' ---> 3' during transcription what is the other role of the Poly(A) Tail?
Transcription termination
acts as stop sequence
500
How many functional groups are in this molecule?
6
500
Predict the pH of a solution with a H+ concentration of 10^-4 M?
pH = 4
500
If a cell receptor is meant to stick out of the cell membrane when embedded, would the receptor face toward the lumen (inward) in the ER or out of the lumen (outward)?
Inward
500
What base would pair with this base?
Guanine
500
The breaking of this bond releases enough energy to add a ribonucleotide to the 3' end of RNA.
Phosphate bond