Question

So I have a bio 102 midterm tomorrow and need some help. We are allowed to bring a index card front and back filled with notes. Could someone help me condense the most important info for each of the following midterm topics:

Protists

viruses/bacteriaphage

fungi

chordates

invertabrates

Plants

Answer 1

Protists

protists are mostly unicellular(some are colonial and multicellular) eukaryotic organisms. Most eukaryotes are single celled organisms. Protists are difficult to characterize because of the great diversity of the kingdom. These organisms vary in body form, nutrition and reproduction. Protists are capable of sexual, as well as asexual reproduction. They can be free-living, or may live symbiotically with another organism.

Viruses/Bacteriophage

Viruses are simple, noncellular entities consisting of one or more molecules of either DNA or RNA enclosed in a coat of protein. They can reproduce only within living cells and are obligate intracellular parasites. Viruses are smaller then prokaryotic cells. A fully assembled infectious virus is called virion. Bacteriophage is the virus which can infect bacteria.

Fungi

Fungi are heterotrophic, spore bearing eukaryotes. Fungi may be single celled or multicellular. Multicellular fungi are composed of networks of long filamentous, branched structure called hyphae. The hyphae often aggregates in a dense network known as mycelium. The hyphae may be without cross walls or divided into compartments by formation of septa. However, even in the septate hyphae, the cytoplasm of the cells is continuous via a central pore in the septum,

Chordates

Chordates are bilaterally symmetrical, triploblastic, coelomates with organ-system level of organization. They are fundamentally characterized by the presence of a notochord, a dorsal hollow nerve chord and paired pharyngeal gill slits.

Invertebrates

These are the animals without backbone or bony skeleton.

Plants

Plants are mainly multicellular and they are photosynthetic. They use sunlight to make organic compounds by the process of photosynthesis.They have chlorophyll which do the function of photosynthesis.