Answers2025-2026 TPS CR Biology ACumulative Exam

Cumulative Exam — Cumulative exam Answers

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Which is the first type of cell to differentiate?

A
neuron
B
epithelial cell
C
muscle cell
D
blood cell
2
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Which component is affected when a catalyst is added to a chemical reaction?

A
the amount of substrate
B
the activation energy
C
the amount of product
D
the concentration of reactants
3

Which is a possible consequence of decreasing air quality resulting from global warming?

A
drying out of fertile lands
B
flooding of low-lying coastal areas
C
melting of glaciers and polar ice caps
D
decrease in population due to health threats
4

What is the maximum magnification of most classroom compound light microscopes?

A
100x
B
500x
C
1,000x
D
5,000x
5

Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the zooplankton get from the phytoplankton? phytoplankton zooplankton bivalves sea ducks bald eagle

Question illustration
A
500 kg
B
5,000 kg
C
50,000 kg
D
500,000 kg
6

The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.Based on the data in the graph, which would most likely happen if the paramecium were placed in distilled water?

Question illustration
A
The contractions would increase.
B
The contractions would decrease.
C
The contractions would cease altogether.
D
The contractions would establish dynamic equilibrium.
7

Which level of organization is characterized by a group of cells that work together to perform a common function?

A
organ
B
tissue
C
organ system
D
organism
8

Which describes one characteristic of both El Niño and La Niña?

A
Both are causes of long-term climate change.
B
Both create warmer water.
C
Both occur in the Pacific Ocean.
D
Both are causes of hurricane activity.
9

Which is the final electron acceptor in the electron transport chain of cellular respiration?

A
NADH
B
FADH2
C
oxygen
D
carbon dioxide
10

Which is abiotic?

A
tree sap
B
insect
C
sunlight
D
tree stump
11

A patient is in need of hydration. Which type of solution are the patient’s cells most likely in?

A
hypotonic
B
hypertonic
C
isotonic
D
osmotic
12

What is the primary source of energy for food chains in an ecosystem?

A
decomposers
B
producers
C
consumers
D
the sun
13

Which statement best illustrates a biotic or an abiotic factor that is often found in a city park?

A
Decaying leaves are an abiotic factor because they are living.
B
Rocks are an abiotic factor because they have never been alive.
C
Water in ponds is a biotic factor, because it provides a habitat for living things.
D
Oxygen is a biotic factor, because it is required for life and found in all living things.
14

Which best describes stem cells?

A
Differentiation produces specialized cells from stem cells.
B
Self-renewal produces specialized cells from differentiated cells.
C
Self-renewal produces differentiated cells from stem cells.
D
Differentiation produces stem cells from specialized cells.
15

How could the loss of biodiversity affect humans?

A
It may cause an increase in the human population as competition is reduced.
B
It may lead to the loss of potential medicines, foods, and products.
C
It could lead to a decrease in infectious and other diseases that affect humans.
D
It could cause a decrease in the amount of pollutants on the planet.
16

Which two microscopes generate three-dimensional images?

A
scanning electron microscope and scanning tunneling microscope
B
transmission electron microscope and scanning electron microscope
C
scanning tunneling microscope and transmission electron microscope
D
compound light microscope and scanning electron microscope
17

Which is a negative effect of rising ocean temperatures?

A
the drying out of fertile land and the formation of dust bowls
B
the flooding of low-lying coastal areas
C
the faster evaporation of water in the soil
D
the decreased frequency of major storms
18

A relationship in which one organism benefits while the other is neither harmed nor helped is called

A
predation.
B
parasitism.
C
commensalism.
D
mutualism.
19

Water exits the leaves of plants and enters the atmosphere. What is this process called?

A
photosynthesis
B
condensation
C
transpiration
D
precipitation
20

Which effect is one likely result of a forest fire?

A
extinction
B
adaptation
C
speciation
D
forced migration

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