
Day 7 Biology ELT Extra Credit (SB2a,b, and c)
Authored by Gloria Miller
Biology
10th - 12th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
DNA fingerprinting would most likely be used to
identify human age and lifespan.
determine genetic relationships.
diagnose different types of cancer.
create genetically-identical species.
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Translation of the DNA sequence AAGCTGGGA would result in
an mRNA strand with the sequence TTCGACCCT.
an mRNA strand with the sequence UUGCACCCU.
a DNA strand with the base sequence TTCGACCCT.
a sequence of three amino acids linked by peptide bonds.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
All of the following EXCEPT the resistance of _________ demonstrate artificially selected resistance.
beef cattle, to "shipping fever",
many agricultural wheat varieties, to drought and fungus,
Antarctic fish to freezing, due to antifreeze proteins in their blood,
many common grasshopper species to pesticides, such as diazinon, sevin, and others,
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
All BUT ONE statement describes an advantage of meiosis.
Variation is aided by crossing-over which occurs during meiosis.
Meiosis ensures daughter cells receive one allele for each gene and half the number of chromosomes.
Independent assortment provides a huge number of possible genetic combinations in daughter cells.
Meiosis occurs often because it allows growth and repair of body tissues in multicellular organisms.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which crisis can be improved by selective breeding?
famine
pollution
global warming
overpopulation
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Each of these four organisms began life as a single 2N cell. Cells in each organisms divided and differentiated. Probably the single most important process that ensured genetic continuity in all four organisms was DNA
alliteration.
replication.
transcription.
translation.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A research program is launched to produce genetically modified varieties of a food crop. The aim of the program is to create varieties with fruit that ripen quicker. Which idea can be used BEST in an argument against such research?
New, unknown proteins may be produced by the modified plants.
The fruit from the modified crop might have a different taste.
The modified crop will reduce the sales of chemical fertilizers.
Similar research programs in the past have led to harmful effects.
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