When a specific molecule of DNA is analyzed, it is found that 20% of the bases are Adenine, therefore, which statement below must be true:
30% of the bases must be Cytosine
30% of the bases must be Thymine
20% of the bases must be Guanine
None of the above statements are accurate
Which is NOT a Phylum in Kingdom Eubacteria?
Phylum Chlorophyta
Phylum Prochlorophyta
Phylum Cyanobacteria
Phylum Cyanophyta
What is the second stage found in the development of cancer?
Initiation
Progression
Promotion
Succession
Which of the following are not a difference in RNA and DNA?
different sugars in sugar-phosphate backbone
using different pyrmidines
length
structure
none of the above
Each strand of DNA is a chain of:
nucleotides
nucleotide polymers
nucleotide monomers
polymers
monomers
How many different amino acids are found in the proteins of living things?
15
20
30
25
Which of the following was not De Lemark's theories?
Having the will to change will result in change
the earth is old
those who are no longer used disappear
developed traits are passed onto offspring
Two hump and one hump camels are the result of:
convergent evolution
adaptive radiation
geographic isolation
divergent evolution
What is the type of formation of species that is found in squirrels of the Grand Canyon?
allopatric speciation
sympatric speciation
a and b
a and c
What are the two immune system reactions called?
first line immune system and second line immune system
innate immune system and acquired immune system
innate immune system and acquired immune response
b and c
Which of the following are exotoxins?
Clostridium botulinium
Clostridium difficile
Clostridium diptheriae
all of the above
What is Bacillus thuringiensis?
It is a chemical for fermenting compounds
It is a bacteria to break down sewage into carbon and nitrogen for fertilizer use
It is agricultural bacteria for farming
It is genetically modified bacteria used to break down pollutants
What are the three components required for optimal growth in bacteria?
moisture, warmth, air
space, moisture, warmth
food, heat, moisture
food, moisture, warmth
What is Ferroplasma acidophilum?
A halophile
A hallucinogen
A thermoacidophile
A type of agricultural bacteria
A prophage can exist inside a host for a period of time in:
Binary fission
lysogenic cycle
lytic cycle
endospore
Which best describes Protists?
Multicellular eukaryotic heterotrophs
Unicellular eukaryotic heterotrophs
Multicellular prokaryotes
unicellular eukaryotes
Which is not a characteristic of the African Sleeping Sickness?
It attacks the brain
It is caused by a trypanosome
It is carried by an anopheles mosquito
It's symptoms include chills, fever and lethargy
Which of the following is not a gymnosperm?
cycads
conifers
ginkgoes
monocots
Which best describes "Double Fertilization" that gives rise to a SEED?
A haploid sperm unites with a haploid polar cell to form a diploid endosperm, while another haploid sperm unites with a diploid egg to form a triploid zygote
A diploid sperm unites with a haploid polar cell to form a triploid endosperm, while another haploid sperm unites with a haploid egg to form a diploid zygote
A haploid sperm unites with a haploid polar cell to form a diploid endosperm, while another diploid sperm unites with a haploid egg to form a triploid zygote
A haploid sperm unites with a diploid polar cell to form a triploid endosperm, while another haploid sperm unites with a haploid egg to form a diploid zygote
Which of the following are a naked seed?
angiosperm
monocot
pteridophytes
dicots
Which class does Astrophyton muricatum go in?
Class Crinoidea
Class Ophiuroidea
Class Asteroidea
Class Holothuroidea
Why do starfish not have a brain?
Because it doesn't need one
Because it is radial
Because it has nerve nets
Because it has a ring nerve
What is an organism in Subclass Copepoda?
pill bugs
sea ticks
sea lice
barnacles
does not have one
Flatworms have
no coelom
true coeloms
false coelom
Which are mollusks?
Deuterosome
Protosome
neither
