Bacteria & Archaea
A cell has a circular chromosome but no nucleus. Is it prokaryotic or eukaryotic?
Prokaryotic
A eukaryote can photosynthesize and also eat food. What is this feeding strategy called?
Mixotrophy
An animal embryo is a hollow ball of cells. What stage is it in?
The blastula
In a protostome, what does the blastopore become?
The mouth
What material makes up the arthropod exoskeleton?
Chitin
A bacterium takes up loose DNA from its environment. What type of gene transfer is this?
Transformation
Why do organisms make gametes through meiosis?
To cut the chromosome number in half
Which tissue layer forms muscles and lines the body cavity?
Mesoderm
What are the two main groups of protostomes?
Lophotrochozoans and ecdysozoans
How many pairs of legs does an insect have?
Three pairs
Two bacteria connect and one transfers DNA to the other. What type of gene transfer is this?
Conjugation
Mitochondria have their own circular DNA and replicate by fission. What idea do these clues support?
They came from bacteria through endosymbiosis
An animal has two tissue layers and no mesoderm. What is it called?
Diploblastic
What kind of cleavage do lophotrochozoan protostomes have?
Spiral cleavage
Which worm phylum has segmented bodies and paired chaetae?
Annelida
A microbe uses sunlight for energy, inorganic molecules for electrons, and CO₂ for carbon. What is it called?
A photolithoautotroph
A eukaryotic cell engulfs a photosynthetic eukaryote. What is this process called?
Secondary endosymbiosis
An animal’s body cavity is only partly lined with mesoderm. What type of cavity is it?
A pseudocoelom
In which group can removing an early embryo cell stop normal development?
Protostomes
Which mollusk group includes clams and oysters?
Bivalves
Which bacterium is linked to stomach ulcers in the slides?
H. pylori
Which eukaryotic parasite causes malaria?
Plasmodium
Why does having a head help an animal that moves forward?
Its sensory organs meet the environment first
What larval form uses cilia to move and feed?
A trochophore larva
What structure does a squid use for jet propulsion?
Its siphon