Unit 2 - Genetics
Read the question, read ALL of the possible answers and choose the BEST
possible answer
1. The following 6 characteristics are shared by all living things:
a. Made of cells, Use energy (metabolism), Require water, Grow and develop,
Reproduce, Move
b. Made of cells, Use energy (metabolism), Require water, Grow and develop,
Reproduce, Respond to their environment
c. Made of cells, Use energy (metabolism), Require water, Breathe, Reproduce,
Move
d. Made of cells, Eat food, Require water, Breathe, Reproduce, Respond to their
environment
2.
As toxins are introduced into a food chain
a. They are in higher concentration at the top trophic levels
b. They are in lower concentration at the top trophic levels
c. Never reach the top trophic levels
d. None of the above
3. How many copies of each chromosome do normal cells have? (Write the number on
your answer sheet.)
4. The purpose of meiosis is to
a. produce cells with half the normal number of chromosomes
b. produce cells with twice the normal number of chromosomes
c. produce proteins that give us our characteristics
d. produce RNA from DNA
5. The chance events that determine what genes an individual gets happens
a. during fertilization
b. when egg and sperm cells are formed
c. during body cell division
d. both a and b
6. RNA is different from DNA because RNA
a. is double-stranded
b. has uracil instead of thymine
c. contains deoxyribose instead of ribose
d. cannot leave the nucleus
1.
Which part of the DNA molecule makes up the rungs of the ‘ladder’?
a. the sugar
b. the phosphate
c. the bases
d. the gene
7. Proteins are made of
a. enzymes
b. amino acids
c. genes
8. Where can DNA be found?
a. Only in the nucleus
b. Only in the cytoplasm
c. Travels between the cytoplasm and the nucleus
d. Where ever you find RNA
d. nucleotides
9. If new discoveries show the present ideas about evolution to be wrong, we should
a. modify our ideas about evolution
b. ignore the new discoveries
c. prove the new discoveries wrong
d. assume that if one part of the theory is wrong, it all must be wrong.
10. Why is the theory of evolution through natural selection so widely accepted by the
scientific community?
a. Because Charles Darwin is the father of evolutionary theory
b. It explains multiple lines of evidence: the fossil record, the similarity of the DNA
between closely related species, and changes occurring in species today
c. Because scientists think logically
d. Because they believe in it
11. About 98% of the information in human DNA is shared by chimpanzee DNA. This is
evidence of which of the following?
a. As chimpanzees evolve, they will become more similar to humans
b. Chimpanzees and humans are too different for meaningful genetic comparisons
c. Chimpanzees and humans share a common ancestor quite recently
d. Humans evolved from chimpanzees
12. A population of bacteria is treated with an antibiotic. How will variation in the population
of bacteria increase the likelihood of survival?
a. It allows all of the bacteria to be resistant to the antibiotic
b. It enables the population to increase rapidly
c. If some bacteria are resistant to the antibiotic, they may be able to survive and
reproduce.
d. The population will be better able to obtain a food source.
13. Which of the following are required for natural selection to occur?
a. There is variation within populations
b. More young are produced than can survive
c. There is competition for resources (food, space, water, mates)
d. All are required for natural selection to occur
14. When populations of a species are isolated from one another, so that they cannot
interbreed, the result is often:
a. The formation of new species as they adapt to different environments
b. Extinction of one or both populations
c. Overproduction of offspring
d. Competition between the two populations
15. A process in which some members of a population live while others die is called:
a. Variation
c. selection factor
b. Adaptation
d. Natural Selection
16. A process in which some individuals are better suited to their environment is called:
a. Variation
c. Natural Selection
b. Adaptation
d. Natural Selection
20. According to modern concepts of evolution, which of the following would be most
correct? The giraffe developed a long neck because,
a. the food was high and it stretched its neck until it got longer
b. one had a mutation that gave it an extremely long neck, and soon all the giraffes
had long necks
c. giraffes with longer necks had a better chance to survive so the trait was selected
for, and after many generations, all giraffes had long necks
d. the environment caused the long necks
21. The Circulatory, Digestive, and Respiratory systems work together for this process:
a. Photosynthesis
b. Diffusion
c. Respiration d. Osmosis
22. The organs of the excretory system are:
a. Kidney, Urinary Bladder, Urethra
b. Artery, Vein, Kidney, Lung
c. Stomach, Colon, Liver, Esophagus
d. Brain, Spinal Cord, Nerves
23. The function of the endocrine system is:
a. Eliminate waste from the organism
b. Control Movement
c. Provide Protection
d. Controls Metabolism
24. Controlling body temperature is an example of:
a. Homeostasis
b. Negative feedback system
c. Nervous system
d. All of the above
25. Movement of CO2 in the lungs accurse because:
a. Diffusion
b. Osmosis
c. Active transport
d. Endocytosis
26. What is a gene?
b. The segment (piece) of DNA that codes for one protein
c. One individual chromosome
d. The entire sequence of DNA in one organism
e. A pair of pants made out of denim
Use Appendix A (Super Grow Fertilizer Experiment) for the next 6 questions.
27. The amount of light, the temperature and the amount of water the seeds in each
container were exposed to during the experiment are examples of:
A) Manipulated variables
B) Responding variables
C) Controlled variables
D) All of the above
28. What is clearly lacking in the experimental design?
A) A control
B) Some of the necessary materials are not listed
C) Repeated trials
D) One specific thing being tested
29. What is the manipulated variable in the experiment?
A) The number of seeds placed in each container
B) The number of seeds that germinated
C) The Super Grow fertilizer
D) The amount of soil mix added to each container
30. The container with soil, but no Super Grow fertilizer could best be described as:
A) The Manipulated variable
B) The Responding variable
C) The Controlled variable
D) The Control
31. The Responding variable can best be described as:
A)
The container with soil, but no Super Grow fertilizer
B)
The time it took for the Pea Plants to mature
C)
The type of Pea Plant seeds used
D)
The amount of water, light and the temperature the seeds in each container
were exposed to.
32. The data collected during the experiment suggests that _____________________ had a
dramatic affect on ________________________
A) Amount of soil, time for pea plants to mature
B) Amount of soil, number of seeds that germinated
C) Super Grow, time for pea plants to mature
D) Super Grow, number of seeds that germinated
33. A segment of DNA in the nucleus of a cell has the following nucleotide base
sequence: TTACGTAAGCGT. The messenger RNA produced from this segment
would contain which of the following sequences?
a. TTA CGT AAG CGT
b. UUA CGU AAG CGU
c. AAT GCA TTC GCA
d. AAU GCA UUC GCA
35. A molecule created from DNA with the nucleotide base sequence
GCCCCGGTAGTG was analyzed to be alanine-glycine-histidine-histidine. The
DNA “genetic code” sequence that coded for the placement of glycine is which of
the following?
a. GCCC
b. GCC c. CGG
d. CCG
e. GGC
36 If a mutation occurred in the DNA strand described in question 35 so the new,
mutated DNA had the following sequence: GCCCC GTAGTG, which amino acid
would not be found in the molecular chain formed that is coded for by this mutation
a. alanine
b. glycine
c. histidine
d. all amino acids would be found in the chain as listed
in the sequence in question 4