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WorksheetsTest Review 2 (Part 2)
Total questions: 31
Worksheet time: 16mins
What is a chromosome?
a gene pair where each allele in the pair is the same version
long strand of DNA condensed (or supercoiled) into a stick-like structure
a gene pair where each allele in the pair is a different version
What is a gene
organism's complete set of genetic material (DNA) that contains all the information needed to build and maintain that organism
a distinct portion of your cell's DNA that carries genetic instructions for a particular protein
molecules that will bond together, such as adenine with thymine and cytosine with guanine
A portion of DNA that codes for a trait
Gene
DNA
Allele
Genotype
How is the instructions for your traits carried on a DNA molecule?
Sequence of the nitrogen bases
In the Deoxyribose Sugar
In the bond between the phosphate and the sugar
In the phosphate group
What is DNA made up of?
nucleotides
cytoplasm
RNA
cells
During which portion of the cell cycle is the cell's DNA replicated?
G1 Phase
G2 Phase
M Phase
S Phase
Define Cancer
Uncontrolled cell division
Cells not dividing at all
If there is 35% Adenine bases in someone's DNA, how much Thymine is there?
35%
15%
If there is 35% Adenine bases in someone's DNA, how much Cytosine is there?
35%
15%
This image represents the cell cycle. In which phase of the cell cycle does the DNA replicate (make a copy)?
G1
S
G2
M
In general, cancer can be defined as:
controlled cell division
diminished cell division
uncontrolled cell division
simplified cell division
This is an onion root cell in the process of mitosis. Look at the the cell identified by the pointer. Which phase of mitosis is this onion cell undergoing?
PROPHASE
METAPHASE
ANAPHASE
TELEOPHASE
What is the role of stem cells in cell differentiation?
They serve as a precursor for generalized cells
These cells can turn into specialized cells and back into generalized cells when needed
They are generalized cells that can lead to specialized cells
They are specialized cells that can lead to generalized cells
As a fertilized egg divides, the cells differentiate because they
have different sets of DNA passed on to the daughter cells
have different sets of genes activated in the daughter cells
have mutations that cause different genes to appear in the daughter cells
randomly assort the chromosomes into different daughter cells
While all of the cells in an individual are derived from a single cell, they can differentiate to take on many different types of structure and function. Cells can become specialized because –
mutations can alter the molecular structure of cell membranes
each cell expresses a different combination of genes
scientists have discovered how to alter the DNA sequences of humans
different cells utilize various forms of RNA nucleotides
When gene expression occurs
A gene is mutated with either an insertion or deletion
The gene is removed from the genotype in that cell
The gene is passed on to the daughter cells during mitosis
The gene is activated and used in protein synthesis
Why is the use of embryonic stem cells controversial?
The embryos are destroyed in the process of extracting the stem cells.
People consider their use as destroying a life.
They are taken from little kids, which is painful.
They are put into a different person.
