Quiz

Passage #1 - Plants Under Pressure—How Photosynthesis Adapts to Stress

What central challenge do plants face on hot, dry days?
A. Choosing between making oxygen and making glucose
B. Balancing CO₂ intake with water loss through stomata
C. Deciding whether to grow roots or leaves
D. Preventing nitrogen from entering leaves
What is the primary consequence of increased photorespiration?
A. More oxygen is produced than usual
B. Energy is wasted and fixed carbon is released
C. Water loss is completely stopped
D. Chlorophyll levels rapidly increase
Which method keeps CO₂ high around RuBisCO by separating steps between cell types?
A. C3 photosynthesis
B. CAM photosynthesis
C. C4 photosynthesis
D. Photorespiration
CAM plants mainly open their stomata at night to:
A. Maximize oxygen release
B. Reduce nitrogen uptake
C. Limit water loss while storing CO₂
D. Increase leaf thickness
An inference about C3 plants from the passage is that they:
A. Always keep stomata open
B. Cannot modify pigment composition
C. Have no defenses against light damage
D. Adjust pigments and antioxidants to manage excess energy
Why might leaves become smaller and thicker under persistent high light with limited water?
A. To increase surface area for gas exchange
B. To reduce water loss
C. To attract pollinators
D. To absorb more nitrogen
What role does nitrogen primarily play in photosynthesis according to the passage?
A. It is a component of stomata
B. It builds chlorophyll and enzymes
C. It converts oxygen into glucose
D. It stores water in vacuoles
Which detail best supports the idea that photosynthesis is a flexible network?
A. Plants always use only one pathway
B. Leaf anatomy and pigment composition can change
C. Stomata are immobile pores
D. Oxygen output is fixed across species
The term “trade-off” in context most closely means:
A. A market exchange
B. A laboratory error
C. A necessary compromise between two competing needs
D. A permanent genetic change
Which statement best summarizes the passage’s main idea?

A. Plants cannot adapt photosynthesis under stress

B. C4 is superior to all other pathways

C. Photosynthesis involves adaptable strategies to balance CO₂ intake, water conservation, and energy use

D. Photorespiration is more important than photosynthesis

Passage #2 - How the Internet Finds Its Way—Packets, Paths, and Congestion

What is the primary function of BGP in the internet?
A. Encrypting all user data
B. Announcing reachable destinations and selecting paths
C. Translating domain names into IP addresses
D. Sharing public IPs among devices
Which protocol manages reliability and congestion control for data transmission?
A. UDP
B. DNS
C. TCP
D. NAT
Why might packets take different paths to the same destination?
A. To avoid routing protocols
B. Due to failures and varying congestion
C. Because routers can only send one packet at a time
D. To bypass DNS translation
Latency is best defined in the passage as:
A. The number of packets lost per second
B. The total bandwidth of a link
C. How long a packet takes to arrive
D. The number of hops in a route
What role does a CDN play?
A. It prevents retransmissions
B. It caches content closer to users to reduce delay
C. It translates IP addresses to domain names
D. It shares one IP among many devices
An inference from the passage is that ISPs may choose routes based on:
A. Only geographic distance
B. Cost, traffic, and reliability trade-offs
C. User preference settings
D. DNS caching policies
What happens during NAT?
A. Packets are encrypted end-to-end
B. Packet headers are rewritten to share a public address
C. Routers announce new prefixes using BGP
D. DNS assigns a private IP to each device
Which statement best captures the system’s resilience?
A. A single fiber cut stops the entire internet
B. Packets are restricted to one predefined path
C. BGP can reroute around failures, although slowdowns may occur
D. Congestion control cannot adapt to traffic bursts
The relationship between latency and throughput is described as:
A. Unrelated; they never influence each other
B. Both affected by congestion and routing choices
C. Controlled solely by DNS
D. Determined only by encryption
What is the main idea of the passage?

A. The internet works only in perfect conditions

B. Routing and transport layers coordinate to deliver packets reliably amid changing conditions

C. DNS is the most important part of networking

D. NAT prevents all congestion

Passage #3 - The Silk Roads—Exchange, Risk, and Reinvention

Which statement best summarizes the Silk Roads?
A. A single paved highway connecting Europe and China
B. A network of routes facilitating trade, ideas, and cultural exchange
C. A maritime-only system driven by monsoon winds
D. A line of forts used only for taxation
What function did caravanserais primarily serve?
A. Manufacturing silk
B. Storing precious metals permanently
C. Providing shelter, supplies, and information for travelers
D. Collecting customs duties for empires
Which factor could quickly disrupt overland trade according to the passage?
A. Abundant wells
B. Oasis cities
C. Drought, warfare, or disease
D. Paper-making
Why did some merchants favor Indian Ocean routes at times?
A. They were shorter in all seasons
B. Monsoon winds allowed faster, safer passage for bulk goods
C. Overland rulers banned all caravans
D. Silk could not be transported by camels
The role of Bactrian camels is emphasized because they:
A. Are faster than ships
B. Are adapted to cold deserts and carry heavy loads
C. Can write contracts
D. Replace caravanserais
Which detail illustrates the spread of ideas along the Silk Roads?
A. Taxes levied by rulers
B. Paper-making and religious beliefs traveling with merchants
C. Drought closing an oasis
D. Compasses measuring wind speed
An inference from the passage is that merchant families survived shocks by:
A. Focusing on a single commodity
B. Traveling only at night
C. Diversifying routes and goods
D. Avoiding caravanserais
What is implied by the phrase “engines of hybrid identity”?
A. Trade eliminated local cultures
B. Trade produced mixes of language, food, and knowledge
C. Trade created only political documents
D. Trade stopped after silk declined
Which cause–effect chain is supported in the passage?
A. Better saddles → lighter loads → slower caravans
B. Paper contracts → reduced navigation errors
C. Improved maps and compasses → refined navigation and trade efficiency
D. More taxes → fewer caravanserais
The main idea of the final paragraph is that:

A. The Silk Roads lost all importance when silk declined

B. Networked trade adapts through technology and power shifts and remains culturally transformative

C. Only empires benefit from trade

D. Desert travel is always unsafe

Passage #4 - Training the Body—Adaptation, Thresholds, and Recovery in Sports

What is the primary purpose of periodization?
A. To eliminate recovery days
B. To plan cycles of overload and rest that raise capacity
C. To focus only on strength training
D. To avoid tapering before competitions
VO₂ max is best described as:
A. The maximum heart rate
B. The highest rate of oxygen use during intense exercise
C. The amount of lactate cleared per minute
D. The number of mitochondria in muscle cells
Why is lactate threshold crucial for everyday performance?
A. It measures sleep quality
B. It determines hydration needs
C. It indicates the effort level sustainable without rapid fatigue
D. It eliminates the need for intervals
An inference from the passage is that strength training helps endurance athletes by:
A. Replacing all aerobic work
B. Improving joint support and coordination, reducing injury risk
C. Lowering VO₂ max
D. Eliminating the need for rest
Which cause–effect chain is presented regarding dehydration?
A. Dehydration → decreased blood volume → increased heart rate → slower cooling
B. Dehydration → higher VO₂ max → faster races
C. Dehydration → better glycogen storage → improved recovery
D. Dehydration → stronger joints → fewer injuries
What role do carbohydrates play according to the passage?
A. They primarily rebuild muscle fibers
B. They replace glycogen for high‑intensity efforts
C. They improve joint lubrication
D. They increase electrolyte intake
Which practice targets lactate threshold most directly?
A. Easy jogs only
B. Tempo runs at controlled, challenging pace
C. Sprinting all-out every day
D. Heavy squats exclusively
What signals that training stress may exceed recovery capacity?
A. Faster split times and improved sleep
B. Lingering pains, deteriorating form, and performance plateaus
C. Increased glycogen storage
D. Lower perceived exertion at all intensities
The passage suggests that improvement depends most on:
A. Maximum effort every session
B. Tapering for the entire season
C. Timing, balance, and feedback to guide adaptation
D. Avoiding any strength work
Which detail illustrates how athletes adjust training using measurement?
A. Choosing random workouts
B. Tracking heart rate, perceived exertion, and split times
C. Estimating temperature by guesswork
D. Avoiding tempo sessions

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