Biology 2 Semester Review

What is the result when a single cell reproduces by mitosis?

• two cells with genetic material identical to the parent cell

• two cells with half the genetic material of the parent cell

• four cells with half the genetic material of the parent cell

• four cells with genetic material identical to the parent cell

Cellular respiration occurs in the __.

• mitochondria

• chloroplast

• cytoplasm

• nucleus

What step in protein synthesis is focused on in this model?

• Translation, mRNA is being decoded into a protein

• Transcprition, DNA is being copied into complemenarty mRNA

• Reproduction, DNA is being split

• Replication, new strands of DNA are being synthesised

What is correct order of evetnts that must occur to synthesis a protein?
A. Messenger RNA (mRNA) attaches to a ribosome
B. RNA moves out of the nucleus to the cytoplasm
C. Amino acids are bonded together
D. DNA is used as a template for RNA production 
E. Transfer RNA (tRNA) bonds as specific codons on the mRNA

• B, C, E, D, A
• D, A, E, C, B
• C, D, E, A, D
• D, B, A, E, C

In what phase of the cell cycle does DNA replication take place?

• G1

• S phase

• metaphase

• cytokinesis

The cell spends most of it's life in ___.

• mitosis

• cytokinesis

• interphase

• meiosis

The structures labeled B are __.

• daughter cells

• chromatids

• centromeres

• spindle fibers

A human zygote should have _____ chromosomes inside.

• 46
• 23
• 92
• 64

When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs

• crossing over

• a mutation

• meiosis

• fertilization

Choose the nucleotide sequence of the RNA strand that would be complementary to the following strand: 
GTAGTCA

• UATUAGA
• ACGACTG
• CAUCAGU
• CATCAGT