AP Biology Test #3a - Molecular Genetics And Cellular Reproduction
The human body is made up of thousands of cells and these cells have a lifespan. We covered the process through which cells are replaced and the various types of cells that exist and their functions. Test yourself on how well you understood Molecular genetics and cellular reproduction below. All the best!
- 1.The phage tail fibers contain the enzyme lysozyme which is necessary in which stage shown below
- A.
A
- B.
B
- C.
C
- D.
D
- E.
E
- 2.Genetic recombination can occur in bacteria by all of the following methods EXCEPT:
- A.
Transfer of DNA between bacteria through pili
- B.
DNA amplification
- C.
Mutation
- D.
Transformation
- E.
Transduction
- 3.A person infected with encapsulated, virulent form of Pneumococcus may have difficulty in combating the infection due to the
- A.
Proliferation of T-lymphocytes
- B.
Release of interferon
- C.
Production of antihistamines
- D.
Bacteria's capsule interfering with phagocytosis
- E.
Synthesis of steroids by the bacteria
- 4.Microbiologists frequently culture bacteria from an ill person to determine which antibiotic will be the most effective in combating the disease. The plate shown below shows growth after 48 hours. Examine the key and the diagram before answering the question below. KEY I = Penicillin II = Erythromycin III = Tetracycline The antibiotic that is effective against the bacteria is
- A.
I
- B.
II
- C.
III
- D.
I and II
- E.
I and III
- 5.The molecular biology process in which many copies of a gene can be produced from a single cell of small DNA sample is called
- A.
Gel electrophoresis
- B.
Polymerase chain reaction
- C.
Transcription
- D.
Translation
- E.
Nuclear multiplication
- 6.The scientist credited for the development of PCR techniques is
- A.
Watson and Crick
- B.
Jochame Hammerling
- C.
Barbara McClintock
- D.
Thomas Chech
- E.
Kary Mullis
- 7.The HIV virus uses which of the cycles of infection below
- A.
Lytic
- B.
Lysogenic
- C.
Prebiotic
- D.
Prokaryotic
- E.
Eukaryotic
- 8.The conclusion reached in the experiment shown below was that the cellular structure responsible for the characteristic shape of the algal cap was the
- A.
Cytoplasm
- B.
Nucleus
- C.
Cell wall
- D.
Cell membrane
- E.
Cytoplasm and the cell wall
- 9.Cells that can differentiate into other body cells are called
- A.
Mitotic cells
- B.
Stem cells
- C.
Gamete cells
- D.
Non cells
- 10.Prokaryotes like bacteria shown below reproduce by
- A.
Binary fission
- B.
Binary fusion
- C.
Sex
- D.
They do not reproduce
- 11.Identify the phase of mitosis from the picture below:
- A.
Interphase.
- B.
Prophase.
- C.
Metaphase.
- D.
Anaphase.
- E.
Telophase.
- 12.To observe the process of mitosis in plant root cells, a biologist should examine the plant's
- A.
Root hairs.
- B.
Casparian strip.
- C.
Root cap.
- D.
Zone of maturation.
- E.
Apical meristem.
- 13.The exchange of segments of DNA between the members of a pair of chromosomes.
- A.
Ensures that variations within a species never occur.
- B.
Acts as a source of variations within a species.
- C.
Always produces genetic disorders.
- D.
Is called crossing.
- 14.Which of the following is a characteristic of mitochondria and chloroplast that supports the endosymbiotic theory?
- A.
Both have bacteria-like polysaccharide cel walls.
- B.
Both can reproduce on their own outside of the cell.
- C.
Both contain DNA molecules.
- D.
Both contain endoplasmic reticulum and Golgi bodies .
- E.
Both contain ribosomes that are identical to ribosomes of the eukaryotic cytoplasm.
- 15.Which of the following is a correct statement about mutations?
- A.
They are a source of variation for evolution.
- B.
They drive evolution by creating mutation pressures.
- C.
They are irreversible.
- D.
They occur in germ cells but not in somatic cells.
- E.
They are most often beneficial to the organisms in which they occur.
- 16.Which of the following statements concerning a gene is correct?
- A.
A gene can code for a specific protein.
- B.
A gene can exist in alternate forms called introns.
- C.
A gene undergoes crossing-over during DNA replication.
- D.
A gene that is very similar in sequence in a human and in a bacterium is probably a recent mutation.
- E.
A gene that is expresses in every offspring of every generation is recessive.
- 17.The mRNA codons and the amino acids for which they code are? GGG= glycine ACU= threonine CCC= proline AAA= lysine The sequence GGGACUCCC arranges the amino acids in the order. glycine--threonine--proline Wich DNA sequence would substitute lysine for threonine.?
- A.
CCCATTGGU
- B.
CCCATAGGG
- C.
CCCAATGGG
- D.
CCCTTTGGG
- E.
GGGAUAGGG
- 18.The maximum number of RNA codons comprising the genetic code is.
- A.
2
- B.
16
- C.
64
- D.
128
- E.
256
- 19.Using radioactive tracers (shown below) to determine the interactions of bacteriophages and their host bacteria Hershey and Chase demonstrated without question that
- A.
Genes are compose of protein molecules
- B.
DNA and proteins are actually the same molecules located in different parts of the cells.
- C.
Bacteria injects their DNA into the cytoplasm of bacteriophages.
- D.
DNA is the molecule that stores genetic information in the cells.
- 20.Cancer cells that spread are called
- A.
Benign
- B.
Malignant
- C.
Somatic
- D.
Gametic
- 21.Acetabularia mediterranea is mostly closely related to
- A.
Mediterranea crassa.
- B.
Mediterranea crenulata.
- C.
Crenulata crenulata.
- D.
Crenulata acetabularia.
- E.
Acetabularia crenulata.
- 22.Molecules of DNA are composed of long chains of
- A.
Amino acids.
- B.
Fatty acids.
- C.
Monosaccharides.
- D.
Nucleotides.
- 23.
The entire molecule shown in the diagram is called a(n)- A.
Amino acids.
- B.
Nucleotide.
- C.
Polysaccharide.
- D.
Pyrimidine.
- 24.Retrovirus such as HIV are capable of replicating
- A.
DNA from RNA
- B.
DNA from DNA
- C.
RNA from DNA
- D.
RNA from RNA
- E.
Neither DNA nor RNA
- 25.Waston and Crick built models that demonstrated that
- A.
DNA and RNA have the same structure.
- B.
DNA is made of two strands that twist into a double helix.
- C.
Guanine forms hydrogen bonds with adenine.
- D.
Thymine forms hydrogen bonds with cytosine.
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