21 Questions
What is the purpose of the micronucleus in a Paramecium cell?
Stores genetic material for the organism
Describe the function of the pellicle in Paramecium.
Firm and flexible outer covering made of the cell membrane
How does a Paramecium obtain food and energy?
Through photosynthesis
Explain the process of asexual reproduction in Paramecium.
Mitosis: Genetic material is duplicated and two small semi-cells grow between original semi-cells, gradually increasing in size
What is the outcome of sexual reproduction through conjugation in Paramecium?
Formation of a diploid cell called a zygote
How does a Paramecium adapt to produce enough enzymes and other molecules to control its large, very active, unicellular body?
Macronucleus undergoes repeated duplications of chromosomes
What are the adaptations of Fucus for survival in its habitat?
Air sacs/pneumatocyst, Holdfasts, Mucilage covered blade, Conceptacles in Receptacles
What is the habitat for Bifidobacterium?
Human intestine
How does Rhizopus obtain food and energy?
Secrete amylase that breaks down starch into sugar; Saprobe
How does Anabaena obtain food and energy?
Through photosynthesis; produces energy-rich molecules
What is the main method of reproduction for Sordoria?
Sexual reproduction through asci containing ascospores
What is the adaptation in Halobacterium that prevents dehydration from salt?
Halorhadopsin
Describe the reproductive strategies of Polytrichum.
Asexual fragmentation and Alternation of Generation
What is the main component of a prokaryotic cell that may help in attachment to surfaces?
Pili
What are the main adaptations of Lycopodium for survival in its habitat?
Vascular Tissue, Aerial Stem, Sporophyll, Thick 2ndary wall
What is the main difference between Gram-positive and Gram-negative bacteria?
Gram-positive bacteria have a thick cell wall of peptidoglycan and appear purple, while Gram-negative bacteria have a thin cell wall of peptidoglycan and appear pink.
What is the classification of Amoeba in terms of domain, kingdom, and phylum?
Eukarya, Protista, Amoebozoa
What is the function of the contractile vacuole in Amoeba?
It prevents the cell from taking in too much water and bursting, thus aiding in osmoregulation.
What is the adaptation in Anabaena for nitrogen fixation?
Heterocyst
How does Paramecium obtain food and energy?
By gathering prey as it swims, including bacteria and small protists, and going through intercellular digestion.
Name one friend of Bifidobacterium and describe its shape and size.
Streptococcus; Coccus shape, in chains, size of 0.009mm
This quiz covers the characteristics, classification, habitat, feeding habits, movement, reproduction, and adaptations of the prokaryotic genus Bifidobacterium. Test your knowledge on this important yogurt bacteria commonly found in the human intestine.
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