BISC 160 Test 3 Questions

Ultraviolet light and many of the chemicals in cigarettes are known to be ____, agents that cause cancer.

A) mutations
B)cyclin-dependent kinases C)carcinogens
D)frame-shifters E)mutagens

The specific term to describe tetrad formation during Meiosis is: A)independent assortment B)elongated by additions to its 5' end C)synapsis D) chiasmata E)segregation

Which of the following does NOT accurately describe the lagging strand during replication? A) built in fragments B)elongated by addition to its 5' end C)replicated discontinuosly D)elongated in opposite direction of replication fork D)all of the above are accurate

During cell division, the spindle fibers that run from each pole and overlap at the metaphase plate are called: A)centrioles B)polar microtubules C)kinetochore microtubules D)centromeres
E)astral microtubules

Development of male gametes from haploid cells, which resulted from meiotic cell division, is called:

A)oogenesis B)Telophase II C)cytokinesis D)interkinesis E)spermatogenesis

Use this small piece of DNA to answer the question:

3'-C-A-T-A-G-G-T-C-G-T-C-A-A-G-T--5'

What will result if this part of a DNA strand (above) is transcribed?

Use this small piece of DNA to answer the question:

3'-C-A-T-A-G-G-T-C-G-T-C-A-A-G-T--5'

What will result if this part of a DNA strand (above) is translated?

Sister chromatids are: A) built by semi-conservative replication followed by complexing with histone proteins B) two exact copies of DNA with proteins attached C)two exact copies of a chromosome held together by cohesin proteins D)produced before a cell can divide E) all of the above

When lactose is present in the gut of a calf, and glucose levels are declining rapidly, what will happen? A)repressor protein will be inactivated and bind to promoter, stimulating transcription of lac genes
B)repressor protein will be activated and bind to prmoter, stimulating transcription of lac genes C)cAMP will bind to and activate CAP, which will bind to promoter and stimulate transcription of lac genes D)cAMP will bind to and activate CAP, which will bind to promoter and repress transcription of lac genes E)cAMP will bind to repressor protein, stimulating transcription of lac genes

The Cell Cycle is controlled by: A)genes on DNA B)scaffolding proteins C)cyclin proteins D)t-RNA E) both A&C

In one animal, a heart cell has the same genome as a skin cell. This is an example of the Principle of:
A) Nuclear Equivalence B)Nuclear Specialty C)Segregation D)Independent Assortment E)Universality of the Genetic Code

Which of the follwing describes a single monomer of a nucleic acid? A) A pentose sugar with a phosphate group bonded to its 5' carbon and nitrogenous base bonded to its 1' carbon B)two pentose sugars with a phosphate group bonded to one, and nitrogenous base bonded to the other C)a nitrogenous base, such as adenine D)a nucleotide, such as adenine D)a pentose sugar with a phosphate group bonded to its 1' carbon and nitrogenous base bonded to its 5' carbon

If a prokaryote has 6 structural genes that are adjacent to each other and share a promoter and regulatory sequences, this region would be called a/an:

A) operon B)repressor C)inducer D)operator E)constiuitive gene

Chromatin is highly organized into _____, which are eight histone protein molecules encircled by DNA.
A)euchromatin B)nucleioli
C)chromosomes C)centromeres E) nucleosomes

The genes of the lac operon are STIMULATED into expression only when: A)lactose and glucose are present B) lactose is present, but glucose is absent C)lactose is absent, but glucose is present D)lactose and glucose are absent E)the cow does not have milk in its diet