Biology 101 (12) Mini Quiz
Number of Strands RNA
1
Bacteriophage
A virus that infects bacteria
What was the genetic material from a bacteriophage?
DNA, not protein
Describe the purpose of the hydrogen bonds in double stranded DNA
They hold the two strands of DNA together, but are weak enough to come apart during replication.
RNA
single-stranded nucleic acid that contains the sugar ribose
Number of Strands DNA
2
Sugar Present RNA
Ribose
Relative Length RNA
Short
3 Jobs of DNA
Storing, copying, and transmitting genetic information in a cell
Explain the base pairing rule that applies to double-stranded DNA.
The base pairing rule is that adenine always is with thymine and guanine always bonds to cytosine.
General role of the nucleus
The nucleus is an organelle found in eukaryotic cells. It contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
Distinguish between template strand and coding strand of DNA, identifying the functional role of each.
The template strand stores the information, and the coding strand is the newly synthesized strand.
nuclear membrane
controls what goes in and out of the nucleus
DNA molecule
double helix
Transforamation
the process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria
Describe the functional role of nucleotides.
A compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.
Bases Present DNA
ATGC
Bases Present RNA
AUCG
ATCG
Adenine, Thymine, Cytosine, Guanine
AUCG
Adenine, Uracil, Cytosine, Guanine
Chromatin
Clusters of DNA, RNA, and proteins in the nucleus of a cell
What is the genetic material in genes?
DNA
What chemical factor did Griffith conclude could change harmless bacteria into disease-causing bacteria
DNA was the transforming factor
Sugar Present DNA
Deoxyribose
nuclear pores
Involved in the active transport of substances into and out of the nucleus.
Relative Length DNA
Long
Nucleolus
Makes ribosomes
Proteins
Nutrients the body uses to build and maintain its cells and tissues
Describe how DNA is packaged inside the nucleus.
The DNA is wrapped around ball shaped histone proteins.
Chromosomes
threadlike structures made of DNA molecules that contain the genes