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24-25 MHS Biology Spring Semester Exam Flashcards | StudBud
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24-25 MHS Biology Spring Semester Exam
24-25 MHS Biology Spring Semester Exam
29 terms
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1
A cellular process is shown. Which of these is the most likely result of the process shown in the diagram?
Chromatids will have less genetic variety.
Chromosome replication will cease to avoid errors that result in mutations.
Offspring will no longer express traits from previous generations.
Gametes will contain new allele combinations.
2
Leaves are part of a plant’s shoot system. The xylem tissue in leaves transports —
the wax required to coat the surface of actively growing tissue
the wax required to coat the surface of actively growing tissue.
the bacteria needed for nitrogen fixation in root nodules.
the water and minerals that are absorbed by the roots
3
What is the significance of a frameshift mutation in DNA?
It often results in the production of a non-functional protein.
causes the DNA molecule to break apart
It has no effect on the organism's phenotype.
It leads to the formation of a completely new gene.
4
A father has type A blood (AO) and the mother has type AB blood (AB). which blood type would be
impossible
for offspring
O
A
B
AB
5
In case of incomplete dominance If you cross a black bunny with a white bunny, what would be phenotype of offspring?
black
black with white spots
gray
white
6
Endocrine system uses what kind of chemicals secreted into the bloodstream which help control and coordinate the body?
Targets
Helpers
Hormones
Enzymes
7
Which two body systems are the most instrumental in keeping tissues and organs fully oxygenated?
Circulatory and Nervous
Nervous and Respiratory
Integumentary and Excretory
Respiratory and Circulatory
8
Mistletoe extracts water and nutrients from an oak tree, causing harm to the tree.
Commensalism
Competition
Parasitism
Mutualism
9
Which statement best describes an interaction that will allow a flowering plant to reproduce by self-pollination?
An ovule is transferred from ovary to petal on a different flower
Ovary is transferred from flower on one plant to flower on different plant
A pollen grain is transferred from anther to stigma of same flower
An anther is transferred from a filament to another filament in same flower
10
Red is dominant over white. If you cross red flowers (Bb) and white flowers (bb) how many will be white?
75%
50%
25%
100%
11
Nitrogen fixation is the process in the nitrogen cycle that...
Bacteria in the soil turn nitrogen back into N2 gas
Bacteria in the roots of plants turn N2 gas into usable form
Nitrogen is removed from dead organisms to be used
Nitrogen is fixed into the atmosphere
12
In case of codominance what would be the chance of getting a white flower if you cross two spotted flowers?
100%
75%
0%
25%
13
Which 2 human activities would have a negative impact on the carbon cycle? SELECT TWO (2)
burning fossil fuels
cutting down trees
rotating crops
planting trees
walking to the park
14
The urinary system of part of what larger system that is responsible for ridding the body of waste products?
Regulatory
Digestive
Fecal
Excretory
15
Which statement is an example of how carbon moves through a food chain as part of the carbon cycle?
Producers release carbon dioxide, and consumers take it in.
Producers take in carbon dioxide, and consumers release it.
Producers take in carbon from the soil, and release it when they decompose.
Producers release carbon into the soil, and consumers take it from soil.
16
In cats, the bones in the legs are very similar to the bones of whales' flippers. This is an example of...
vestigial structures
homologous structures
endosymbiosis
analogous structures
17
According to the theory of evolution by natural selection, which of the following is true?
Most animals can easily adjust to a changing environment
Traits acquired during the lifetime of the organism and passed to offspring
Variation does not exist between members of the same species
Environment determines favorable traits passed on to the offspring
18
Periods of slow change interrupted by periods of rapid change with few, if any transitional fossils, best describes -
natural selection
gene flow
punctuated equilibrium
genetic drift
19
During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of
Endocrine and reproductive only
Endocrine, reproductive, and excretory
Endocrine and muscular only
Endocrine, muscular, and reproductive
20
These wings both have the same function for flying, but are different in structure.
vestigial structure
homologous structure
cyclic structure
analogous structure
21
What is the term for a feature that allows an organism to survive better in its environment?
variation
adaption
homologous structure
vestigial structure
22
How can evolutionary relationships among organisms be determined by comparing embryonic development?
Embryos retrace their ancestral stages during development
Embryos of more closely related organisms are more similar in development
Embryos that develop in eggs lack similarities to placental animals
Embryos of fish and mammals share some similarities during development
23
Which of the following can be classified into more than one trophic level?
Frog
Owl
Grasshopper
Rabbit
24
What is mutualism?
When one organism is killed to feed another
When one organism benefits, another is unaffected
Both organisms benefit
One organism feeds off another without killing it
25
Based on the food web, how would a decrease in the sea otter population most likely affect this ecosystem?
The sea urchin population would increase & the kelp population to decrease
The fish population would increase due to changes in the mussel population.
Killer whale population will increase & the fish population will decrease
The mussel population would increase due to changes in the algae population
26
Gene flow is one force that can cause evolutionary change. Which example best illustrates gene flow?
A flock of migrating geese enters another flock and starts interbreeding
Flock of geese loses its way to its wintering grounds, leaving other geeses
Some individuals in a flock of geese have genes that are more advantageous
A flock of geese becomes isolated on an island
27
Ethylene is a plant hormone that causes the leaves to collapse due to touch. The response due to ethylene is known as-
Phototropism
Geotropism
Hydrotropism
Thigmotropism
28
Which of the following best describes an interaction between digestive and circulatory systems in animals?
The digestive system regulates the flow of blood in the circulatory system
Circulatory sys transports nutrients absorbed by the digestive sys to cell
Circulatory system breaks down nutrients into smaller molecules
The digestive system removes waste products from the blood
29
If this food chain were a 10% rule energy pyramid and the flower had 500 J of energy, how much would the frog have?
50,000 J
100 J
50 J
5 J
