Q8: DNA, RNA, and Mitosis Flashcards
Human somatic (non-sex) cells have ___ chromosomes.
46
The cells in your skin, hair, or nails; or cells that are repairing an injury are dividing by ___.
mitosis
In preparation for cell division a cell must condense the DNA into ___ and ___ the nuclear envelope.
chromosomes, disassemble
DNA carries the ___ that parents transmit to their offspring through reproduction.
genes
The genetic information is coded in DNA by the ___.
sequence of nucleotides
A gene can best be defined as ___.
a segment of DNA that carries the instructions for one polypeptide chain
DNA replication ___.
A. takes place during interphase of the cell cycle
B. is spontaneous, not requiring enzyme action
C. can also be called mitosis
D. occurs only in transitionally active areas
A. takes place during interphase of the cell cycle
Select the most correct statement regarding nucleic acids.
A. RNA is a long single stranded molecule made up of the bases A, T, G, and C
B. tDNA is considered a molecular slave of DNA
C. DNA is a long, double stranded molecule made up of the bases A, T, G, and C
D. Three forms exist: DNA, RNA, and tDNA
C. DNA is a long, double stranded molecule made up of the bases A, T, G, and C
The nitrogen base found in RNA but not in DNA is ___.
uracil
Various forms of a gene at a given location are called ___.
alleles
In DNA, complementary base pairing occurs between \_\_\_. A. adenine and guanine B. adenine and cytosine C. adenine and uracil D. adenine and thymine
D. adenine and thymine
The synthesis of an RNA molecule from a DNA molecule is called ___.
transcription
These structures are the primary cellular sites for the production of proteins.
ribosomes
The ___ are removed during the mRNA processing event and is called mRNA splicing.
introns
Genetic information in a cell is transmitted in which of the following sequences? A. DNA, RNA, proteins B. DNA, RNA, carbohydrates C. proteins, DNA, RNA D, RNA, DNA, proteins
A. DNA, RNA, proteins
