30 questions
Rosalind Franklin took an X-ray photograph that revealed the structure of DNA. What is the structure (shape) of DNA?
single stranded with 4 nitrogenous bases
ladder shaped, containing 5 nitrogenous bases
triple stranded, with bonds between each strand
double stranded and twisted, with bases bonded to other bases
In the Enzyme-Substrate Complex shown, what is represented by Y?
Substrate
Enzyme
Active Site
Product
In the Enzyme-Substrate Complex shown, what is represented by X?
Substrate
Enzyme
Active Site
Product
What letter represents the enzyme?
X
Y
Z
Which of the following statements are true about enzymes?
Enzymes are specific
Enzymes work with all substrates
Enzymes can only be used in 1 reaction
Enzymes are made of carbohydrates
What is the correct function of an enzyme?
provides energy to the cell
increases the rate of a reaction (speeds up)
stores genetic information
used as structural support in mitotic spindle
What is the optimal temperature that this enzyme function in?
20
30
40
50
Which of the following is true about the enzyme graph?
The enzyme functions in all temperatures
The enzyme decreases activity after the optimal temperature
The enzyme increases activity after the optimal temperature
The enzyme does not function well at any temperature
Make the complementary DNA strand of DNA from the strand below:
5' GTA CTT CGA 3'
5' GTA CTT CGA 3'
3' CUT GAA GCU 5'
3' CAT GAA GCT 5'
3' CCG GUU GUA 5'
Make the complementary DNA strand of DNA from the strand below:
5' GAA TCG ATT 3'
5' GAA TCG ATT 3'
3' CTT AGC TAA 5'
3' CUU AGC UAA 5'
Polar bears need extra fat to conserve the heat in cold temperatures. What biomolecule conserves heat?
Carbohydrates
Lipids
Nucleic Acids
Proteins
Which two biomolecules provide the cell with energy?
Lipids and proteins
Carbohydrates and proteins
Carbohydrates and nucleic acids
Lipids and carbohydrates
Cellulose is found in plant cell walls. What biomolecule makes up plant cell walls?
Lipids
Carbohydrates
Proteins
Nucleic Acids
Which of the following statements is true about the diagram?
DNA is replicating to make a copy of the genone
Transcription is occuring to make proteins and traits
Translation is occuring to make RNA
Mutations occur with mistakes in DNA
The image below shows an important molecule that delivers an amino acid used in protein synthesis. What is this molecule?
mRNA
rRNA
tRNA
Nucleus
What process is shown in the picture?
Transcription
Translation
Replication
Cell Division
What process is shown in the picture?
Transcription
Translation
Replication
Cell Division
In a DNA complementary strand, the base Adenine (A) pairs with the base _________ and the base Guanine (G) pairs with the base _________
Adenine (A) ; Guanine (G)
Thymine (T) ; Cytosine (C)
Cytosine (C) ; Thymine (T)
Uracil (U) ; Guanine (G)
What organelle is A?
Mitochondria
Chloroplast
Nucleus
Cell Membrane
What organelle is B?
Mitochondria
Chloroplast
Nucleus
Cell Membrane
What process takes place in A? What process takes place in B?
A: Cellular Respiration ; B: Photosynthesis
A: Photosynthesis; B: Cellular Respiration
A: Photosynthesis; B: Cell Division
What molecules are X? What molecules are Y?
X: C6H12O6 + O2 ; Y: CO2 + H2O
X: CO2 + H2O ; Y: C6H12O6 + O2
Which of the following statements are true about the cell cycle?
Cell division occurs in interphase
DNA is replicated in the S phase
G0 is when the cell divides rapidly
Mitosis results in 4 daughter cells
Checkpoints occur between the stages of the cell cycle. If a cell does not meet criteria at the end of a stage, it will not move to the next stage. If a cell does not pass the G1 stage of the cell cycle, what will occur?
The cell will divide normally
Cell growth will be stopped and not replicaiton of organelles will occur
DNA replication will not occur
Cells pass through a G2 checkpoint before entering mitosis. Ideally, if DNA is detected, the cells do not enter mitosis until the damage is repaired. Why is DNA damage repaired before cells enter mitosis?
So that another round of DNA synthesis does not have to take place
So that the chromosomes align at the metaphase plate during mitosis
So that the cytoplasm can be divided equally between the two daughter cells
So that healthy daughter cells are produced, allowing the organism to continue growing
Which of the following best describes what happens inside of a living plant cell, in regards to the cell membrane?
It selectively regulates the passage of substances into and out of the cell to maintain homeostasis
It is composed of proteins and carbohydrates
It has the same permeability to all substances found inside or outside the cell
It is a double protein layer floating lipid molecules
Which of the following best explains the function of the organelle shown in the diagram?
Maintaining homeostasis and cell division to daughter cells
Transport of molecules and maintaining homeostasis with a semi-permeable membrane
Cell division and invading a host with virus
Invading a host and transport of molecules
A student filled a dialysis sac (bag) with milky- white starch solution and placed the bag in a beaker of iodine as shown in the image below. Two hours later the student observed changes to the initial conditions. What is a correct conclusion of this experiment?
All molecules are able to pass through the bag like the cell membrane
The bag only allows water and iodine to pass and is semi-permeable
Starch and other large molecules are able to pass through the bag like the cell membrane
The bag and the cell membrane are both impermeable and nothing can pass through
What is the correct order of the cell cycle and mitosis?
III, VI, I, IV, II, V
VI, I, V, II, IV, III
I, II, III, IV, V, VI
III, V, IV, II, I, VI
Why is the particular sequence of bases in a segment of DNA important to cells?
The base sequences contain the order of sugars in polysaccharides
The base sequences code for proteins that help cells grow and function
The base sequences cause the release of lipids from the nucleus
The base sequences produce electrical signals sent to the cytoplasm