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Module B Keystone Review Flashcards | StudBud
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Module B Keystone Review
Module B Keystone Review
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Module 2 Review #lasd #biology #biology #dowd
Flashcards
36 cards
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Practice quiz
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Questions
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Answers
1
Which term best describes the basic unit of inheritance passed from a parent to offspring?
genes
phenotypes
traits
genotypes
2
This owl’s disk-shaped face helps direct sound wavesinto the owl’s ears, similar to a human ear
Vestanologous
Homologous
Analogous
Vestigial
3
Whichmutation is the most likely to result in no effect to the phenotype of a cell?
Silent
Frame-Shift
Nonsense
Missense
4
The amount of rainfall, intensity of UV radiation, and local climate are all examples of
Vertebrates
Biotic factors
Microbes
Abiotic factors
5
Changing a single base causes an error that affects the next 500 amino acids in a protein.
silent mutation
nonsense mutation
frame-shift mutation
substitution
6
Which of the following is anexample of an observation?
Whattime of day is best for finding a spider web?
Whydoes a spider spin a web?
Aspider spins a web to catch its food.
Afly is caught in a spider web
7
Two species of frog live in the same area. Which is the best evidence for a common ancestor?
the species' mating behaviors
the species' similar habitats
the species' physical characteristics
the species' similar diets
8
Various bacteria, fungi, protozoans, vertebrates, andinvertebrates all live in one common area.
community
population
ecosystem
biome
9
A species of flower has 5 petals. One individual has 3 petals. What event most likely caused it
mutationin the gene code for petal number in the parents DNA
lowwater levels in the soil surrounding the parent plants
hightemperatures during the flower production season
DNAis inherited from two different parent plants
10
A human is composed of trillions of cells. Which process directly causes this large number?
cell division
cell mutation
respiration
circulation
11
What happens to the unused organic matter at each trophic level within an energy pyramid?
It is absorbed by consumers
It is used by consumers to make more food
It is recycled by decomposers
It is lost as ATP to the environment
12
Which list of eventsoccurs during the interphase stage of the cell cycle?
the cytoplasm divides, creating two daughter cells
separation of sister chromatids
a new membrane begins to form around the chromatids
DNA replicates and proteins are produced
13
Whichof the following best describes an acquired trait of a cat?
long tail because itdevelops during the life of the organism
chipped tooth becauseit develops during the organism's life
fur length because itis passed on from the prior generation
A.eye color because itis passed on from the prior generation
14
Very few plants grow at the bottom of oceans. Which scenario best explainsthis observation?
decreased oxygen
increased competition
decreased sunlight
increased predation
15
Which outcome is mostlikely a result of selectivebreeding?
the formation of new genes
an increase in natural selection
the expression of favored genotypes
development of new ecosystems
16
Which location would most likelyhave an aye-aye population with the greatest genetic variation?
location 3
location 1
location 2
location 4
17
Which answer correctly distinguishes between the following statements?
1:Theory 2: Hypothesis 3: Observation 4: Inference
1: Inference 2: Observation 3: Theory 4: Fact
1: Observation 2: Inference 3: Fact 4: Hypothesis
1: Fact 2: Theory 3: Hypothesis 4: Observation
18
Leopards live and hunt alone. What is most likely the primary value of living alone?
increased survival rates with habitat loss
decreased space needs for the species
greater genetic variability within the species
reduced competition for natural resources
19
Which energy transfer most likely occurs between organisms in the food web?
from owl to fox
from mouse to grasshopper
from sparrow to grass
from rabbit to fox
20
Which effect is most likely caused by nondisjunction during meiosis?
an extra chromosome
increased survival benefits from traits
only two types of nitrogenous bases
an increase in nuclei
21
Thepitcher plant and venus fly trap haveleaves that catch insects. Cacti have spines for leaves
Analogous
Homologous
Vestigial
Vagus
22
A cell goes through Meiosis. How are the daughter cells different than the parent cell?
the daughter cells are larger
the daughter cells grow twice as fast
the daughter cells contain half the amount of DNA
daughter cells are diploid
23
How can translocation affect chromosomes?
can cause the exchange of genes between homologs
can result in failure of chromosomes to separate
results in chromosomes having very different lengths.
can cause duplication of certain sections of chromosomes
24
Whattype of evidence does the presence of homologous structures in plants provide?
Only some plants are capable of photosynthesis
Some animals are more closely related to plants
Insects and plants evolved around the same time
plants have evolved from a common ancestor
25
What must be transmitted to new DNA strands during replication to maintain genetic information?
the sequence of phosphates from existing DNA strands
individual atoms from existing DNA strands
the sequence of bases from existing DNA strands
individual sugars from existing DNA strands
26
Whichrelationship best describesthe interaction between ticks and the deer?
Competition
Parasitism
Commensalism
Mutualism
27
Which scenario would lead to the most rapid evolution of a new species of beetle?
small group of beetles finding an area with new food sources
anonnative predator of the beetle being introduced
arandom mutation in one of the beetles
A geographic barrier separating two populations of beetle
28
Which trait is an acquired trait?
bruise
red hair
dimples
brown eyes
29
Which of the following is theoriginal source of energy in any ecosystem?
plants
sugar
soil
sunlight
30
The DNA of two brown eyed and blue eyed people is analyzed. What would they have in common?
the allele
the DNA sequence
. the location of the gene
the amount of pigment
31
Which description is the best example of a population?
all of the organisms in every forest
all of the red foxes in a forest
all of the organisms in a forest
all of the red foxes in every forest
32
Squirrels, separated by the Colorado River, became unique species.Which mechanism caused this?
increased gene flow
. geographic isolation
behavioral isolation
habitat preference
33
The graph represents changes to a trait. What most likely occurred at time 1?
There was an increase in the population of mice
Natural selection caused a new trait to be beneficial
A mutation produced a new allele for the gene
An invasive species with a new allele entered the population
34
Genetic engineers designed corn with antifungal properties. How does this benefit farmers?
It increases the value of each acre of land cultivated.
It eliminates the processing needed to harvest corn
It lowers the cost of each acre of plants cultivated.
It makes each plant more resistant to disease.
35
Fertilization of anegg leads to a diploid genome. Which is true of a diploid cell?
There are two chromosomes per allele
There are 2 alleles per gene
There are two genes per allele
There are two genes per chromosome
36
Which statement best describes how invasive plants can negatively affectsnative herbivores?
can stop the life cycles of native herbivores.
can increase the flow of energy through the ecosystem.
can reduce the size of the native plant populations.
can attract other nonnative plants to the forest ecosystem.
