13 Jun UMUC BIOL103 quiz 2
Question
In the process of transcription, the promoter site is
where the repressor molecule binds
where DNA polymerase binds
where RNA polymerase binds
where the operator molecule binds
Alleles are
sometimes referred to as genotypes
can either be dominant or recessive
different molecular forms of the same gene
all of the above
In DNA replication, the following are/is involved
DNA ligase
DNA polymerase
Okazaki fragments
All of the above
After mitosis, the chromosome number of a daughter cell is
doubled compared to the parent cell.
Rearranged compared to the parent cell
The same as the parent cell
One-half as the parent cell
Meiosis is a division mechanism that produces
two cells
two nuclei
eight cells
four cells
Oncogenes are
programmed cell death
operons
mutations in a checkpoint gene and can induce cancer cells
inactivated X chromosomes
The codon for methionine (Met) is AUG. The anticodon in the tRNA is
AUG
CAT
UAC
CAU
Crossing over and genetic recombination
Maintain the status quo of the genotypes
Between homologous chromosomes results in a potentially adaptive variations in traits among a population
Do not affect linkage groups
None of the above
Karyotyping
involves isolating chromosomes arrested in metaphase
can be used to compare an individual’s chromosome number to a standardize preparation
is used to identify particular chromosomal abnormalities
all of the above
The dogma of molecular biology is
Protein-DNA-RNA
RNA-DNA-Protein
DNA-RNA-Protein
DNA-Protein-RNA
all of the above-order does not matter
Short answer (4 pts each):
What is the major difference between the lytic and lysogenic cycle in regard to bacteriophage infection against bacteria?
Describe the similarities and differences between mitosis and meiosis.
Fill in the blanks (1 pt each): Use the word bank provided.
mRNA is used in a process called ____________________ to put amino acids in __________________ sequences to make a protein . The site of protein synthesis is the _______________________. The ____________________ of the tRNA binds to the codons of the mRNA. A base triplet in the mRNA is known as a
___________________. DNA replication occurs in the ______________ direction. The complementary RNA sequence of the DNA sequence GAACCGT is ________________.
Word bank 1:
3’-5’, mitosis, translation, DNA replication, size, RNA polymerase, uracil, anticodon, codon, DNA, tRNA, cDNA, cRNA, ribosome, exons, 5’-3’, phenotype, genotype, introns, specific, GAACCGU, CUUGGCA, CTTGGCA, transcription, amino acids, nucleotides, random
Fill in the blanks (1 pt each): Use the word bank provided.
In reproduction, the cell cycle starts with _______________________, which is divided into three parts, occurring in the following correct order: __________, ___________, and ____________. Following this stage, cells enter mitosis, which in the correct order, is divided into four stages, _________________, __________________, _____________, and ___________________. The final stage of the cell cycle is called _______________________.
Word bank 2:
centrosomes, chromatid, centromere, diploid, haploid, G1, T, S, G2, G3, meiosis, mitosis, DNA replication, telophase, anaphase, metaphase, prophase, cytoplasmic division, interphase
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