18 Questions
What kind of virus is HIV?
Retrovirus
Why does the immune system fail after HIV infection?
HIV replicates rapidly in T cells
What are helper T cells?
Cells that help coordinate the immune response
What is reverse transcriptase?
An enzyme that converts RNA to DNA
Where did SARS-CoV2 most likely come from?
Bats
What is the primary characteristic of Opisthokonta?
Flagellated cells with posterior flagella
Why is energy lost as it is transferred between trophic levels?
Due to heat loss and inefficiency of energy transfer
What are biogeochemical cycles?
Cycles that recycle nutrients and elements through biotic and abiotic components of ecosystems
What causes positive radiative forcing?
Increased greenhouse gas emissions
What are some greenhouse gases?
Methane (CH4)
Who first predicted that adding CO2 into the atmosphere would cause climate change?
Arrhenius
What is the Paris Agreement?
An agreement to limit global warming and mitigate its effects
What is the primary claim to fame of cyanobacteria?
They are primary producers and perform photosynthesis.
What leads some scientists to view the tree of life as more of a bush?
Horizontal gene transfer events between different domains.
Why are eukaryotic cells usually larger than prokaryotes?
To allow for increased complexity in cellular functions.
What is the primary characteristic of the Archaeplastida eukaryotic supergroup?
Presence of a primary plastid.
Where did mitochondria likely come from based on current evidence?
Originated from cyanobacteria through endosymbiosis.
What is a primary feature that distinguishes Stramenophila among eukaryotic supergroups?
Flagella with distinctive hairs or scales.
Test your knowledge on bacteria, horizontal gene transfer, transduction, transformation, conjugation, the three domains of life, extremophiles, cyanobacteria, and the evolution of eukaryotes.
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