Science 9, Unit 2
A unit review quiz covering reproduction.
- 1.Describe two issues that come up from assisted reproductive technologies.
- 2.It is the year 2552, and you are a biological engineer given the task of creating an organism that can colonize a newly discovered planet. The planet has a small amount of water, strong winds, and a temperature range of -20C to 50C. What method of reproduction would your organism use? Why?
- 3.What is the difference between plant and animal cells?
- A.
Only animal cells have cell walls and chloroplasts.
- B.
They are the same.
- C.
Only plant cells have cell walls and chloroplasts.
- D.
Only plant cells have ribosomes not connected to the endoplasmic reticulum.
- 4.Proteins are built in the ___________________.
- 5.DNA stands for:
- A.
Diphosphonucleic acid
- B.
Dioxyribonucleic acid
- C.
Dioxyribonucleic atom
- D.
Dichromatonitrogen acid
- 6.The sides of the DNA "ladder" are made up of:
- A.
Sugar and phosphate
- B.
Phosphate and thymine
- C.
Cytosine and guanine
- D.
Sugar and nucleic acid
- 7.The "rungs" of the DNA ladder are made up of:
- A.
Chromatin and genes
- B.
Sugar and phosphate
- C.
A pair of phosphate bases
- D.
A pair of nitrogenous bases
- 8.The difference between chromatic and chromosomes is:
- A.
Chromatin contains DNA and proteins. Chromosomes are the x-shaped structures that strands of chromatin form into for cell division.
- B.
Chromatin is the x-shaped structures used in cell division. Chromosomes are the specific strands of chromatin used in protein production.
- C.
Chromatin is the DNA found in animal cells and chromosomes are the DNA found in plant cells.
- D.
Chromatin provides the cell with the information used in protein production, and chromosomes provide the cell with the information used in cell replication.
- 9.Genes are:
- A.
The sections of your DNA that provide information used to control cell division.
- B.
The collection of chromosomes you receive from each of your parents.
- C.
Are the section of DNA used to make new ribosomes.
- D.
Small sections of DNA located at specific places on a chromosome that provide the information to produce the different proteins used by your cells.
- 10.If each of your cells has the same amount of genetic information, how can cells become specialized?
- A.
Only specific chromosomes are unwound into chromatin.
- B.
Only specific genes are read in each cell.
- C.
The chromosomes that aren't needed are made non-functional by special proteins.
- 11.Specialized proteins that speed up the chemical reactions within your cells are called ____________.
- 12.Specialized proteins that act as chemical messengers are called ___________________.
- 13.Put the steps of protein production in order.A. The golgi body repackages the protein for transport out of the cell.B. The nucleus receives a chemical signal to make a specific protein.C. The vesicle attaches to the cell membrane, and releases the proteins out of the cell.D. The manufactured protein enters the endoplasmic reticulum.E. The DNA message for a specific protein is copied into a small molecule called RNA.F. The RNA message is delivered to the ribosome, and the ribosome makes the protein.G. A vesicle forms off the end of the golgi body to carry the protein to the cell membrane.H. RNA leaves through a nuclear pore.I. A vesicle forms off the end of the endoplasmic reticulum and carries the protein to the golgi body.
- A.
B, E, H, F, D, I, A, G, C
- B.
C, B, E, F, G, I, A, D, H
- C.
A, C, E, D, B, I, H, F, G, B
- D.
I, E, B, F, G, H, A, C, D
- 14.What is a gene mutation?
- A.
A mutation is a change in which bases pair together.
- B.
A mutation is a change in the order of A,G,C, and T bases in a gene.
- C.
A mutation is a change in the number of chromosomes an individual has.
- D.
A mutation is a change in the way genes are organized on the chromosome.
- 15.When a mutation is beneficial to an organism, it is a ___________ mutation.
- 16.When a mutation results in the probability that the organism will not be able to reproduce or survive in their environment, it is a ______________ mutation.
- 17.A mutation which does not increase or decrease the survival rate of an organism is a ________________ mutation.
- 18.If the original sequence of a gene is: ATC CAG TTA AGC CCGand after mutation is: AAC CAG TTA AGC CCGWhat kind of mutation is it?Is it likely to be harmful? (This question will have 2 answers checked)
- A.
Deletion
- B.
Addition
- C.
Substitution
- D.
Yes
- E.
No
- 19.If the original sequence of a gene is: ATC CAG TTA AGC CCG and after mutation is: ACC AGT TAA GCC CG What kind of mutation is it? Is it likely to be harmful? (This question will have 2 answers checked)
- A.
Addition
- B.
Deletion
- C.
Substitution
- D.
Yes
- E.
No
- 20.Substances of factors that cause mutations are called:
- A.
Mutagens
- B.
Mutators
- C.
Damaging substances
- D.
Mutationers
- 21.True or False?In gene therapy, researchers replace a mutated gene with a healthy copy by using an inactive virus to carry the gene to the diseased cells.
- A.
True
- B.
False
- 22.The stages of the cell cycle are:
- A.
Growth, DNA replication, cytokinesis
- B.
Interphase, mitosis, cytokinesis
- C.
Interphase, metaphase, anaphase, cytokinesis
- D.
Mitosis, interphase, cytokinesis
- 23.During interpase the cell:
- A.
Replicates its DNA, grows
- B.
Grows, replicates its DNA
- C.
Grows, replicates its DNA, and grows some more
- D.
Grows, undergoes mitosis, separates
- 24.DNA can replicate by unwinding and breaking apart because:
- A.
A and T pair, and C and G pair, so the two strands from the original form a template.
- B.
Enzymes control which new bases are added to the two strands, making sure that they end up the same.
- C.
It doesn't matter if the two new helices are different - that's where genetic variation comes from.
- 25.Chromosomes are comprised of:
- A.
Two copies of a DNA molecule (called sister chromatids) joined by a centromere
- B.
Two different strands of DNA (called sister chromatids) joined by a centromere.
- C.
Two different strands of DNA (called chromatids) joined by a centriole.
- D.
Two copies of a DNA molecule (called sister chromatids) joined by a centriole.
Questions: 10 | Attempts: 7446 | Last updated: Mar 22, 2022
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