Ch 1: Cell Structure And Cell Division Flashcards
What is the most radiosensitive phase in the cell cycle?
G2/ M
In general, _____ amino acids = ________ nucleotide codes
1:3
These structures contain enzymes responsible for removing waste from a cell
Lysosomes
Mutation in oncoproteins often result in ?
Uncontrolled proliferation of cells
What happens in G0?
Cells enter this state during stressful periods such as low nutrients or inadequate temperature
What happens in G1?
Cells receive the signal to divide
What happens in S-phase?
DNA is replicated
What happens in G2?
Organelles are replicated
T/F
If DNA coding is not disrupted then cell mutation will not occur
False
C-G bond require _________(more/less/same) energy to break than T-A bonds.
More
What are the four bases that make up the backbone of a DNA double helix?
Adenine (A)
Thymine (T)
Cytosine (C)
Guanine (G)
The majority of organic compounds within a cell are?
Proteins
Radiation therapy targets the ______ of the cell
Nucleus
Amino acids are the building blocks of?
Proteins
T/F
Healthy cells are theoretically more sensitive to radiation than tumor cell
False
In the case of breast cancer, the HER2/neu receptor mutation….
Leaves the receptor always on allowing four growth hormone to tell the cells to constantly divide
________ allows molecules to enter a cell based on size or particular charge.
Transporter channels
_______ provides energy and structure to the cell
Carbohydrates