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Unit 4 Vocabulary - Biology

Across
membrane-bound cell organelle that contains digestive enzymes. They break down excess or worn-out cell parts
short microscopic hairlike vibrating structure found in large numbers on the surface of certain cells
state of balance among all the body systems needed for the body to survive and function correctly
vesicles and folded membranes within the cytoplasm, involved in secretion and intracellular transport
organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur
plastid that contains chlorophyll and in which photosynthesis takes place
gelatinous liquid that fills the inside of a cell
Threadlike structure that enables many protozoa, bacteria, spermatozoa to swim
membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance
cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division
Down
the material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed. It consists of protein, RNA, and DNA.
organisms whose cells contain a nucleus and other membrane-bound organelles
deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms
scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells
a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
large, membrane-bounded organelle that contains the genetic material in the form of multiple linear DNA molecules organized into structures called chromosomes
single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles
rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria
minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells