Bio quiz 1 Flashcards
How many different nitrogen bases are found in DNA?
4
Where does replication take place?
Nucleus
What is the sequence of the matching strand for A-A-G-G-T-T-C-C
TTCCAAGG
Name nitrogen bases found in DNA
Thymine
Adenine
Cytosine
Guanine
How many strands does DNA have?
2
What part of the cell has DNA?
Cell Nucleus
Where are PROTEINS made?
Ribsomes
What molecule carries the information for protein production?
mRNA
Name of the sugar in DNA
Deoxyribose
What makes up the sides of the DNA ladder?
Sugar and phosphate
What are the steps of the ladder for DNA made up of?
Nitrogen bases
Where weak hydrogen bonds are located in DNA
Between the sugar and phosphate
__ Is the enzyme that unzips DNA
helicase
___ Is the enzyme that causes the proper nucleotides to bond with old strands of DNA
Polymerase
What does DNA mean
Deoxyribonucleic acid
How many chromosomes do body cells have?
46
What is DNA called that is not tightly coiled
chromatin
What are 2 identical parts of a chromosome called?
Sister chromatids
Diploid
2n
A pair of chromosomes with the same size and shape that carry genes
Homologous
What is DNA called that is tightly coiled?
Chromosomes
Haploid
n
How many chromosomes are in a sex cell?
23
What structure holds 2 identical parts of chromosomes?
chromatid
Are homologous chromosomes Diploid or Haploid?
diploid
Do body cells have homologous chromosomes?
yes
A cell that has 1 set of chromosomes
haploid
Are homo cells identical?
no
Sex cells are
Haploid
cells that have 2 sets of chromosomes
diploid
Do sex cells contain homo chromosomes?
no
Body cells are
diploid
Cells that do not have homo chromosomes diploid or haploid?
Haploid
