e of indeterm inate clea a. The ability of cells isofated from early emb C The a
ID: 3166124 • Letter: E
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e of indeterm inate clea a. The ability of cells isofated from early emb C The arrangement of cleavage planes perpendicular to yo to develop into viable or enterocoelous ais o The unpredkctable formation of ether a se body cavity E A mouts that forms in assoclation with the blastopore. 13. The end result of the irat lytie cycle is A) Lysis of te infected cell. ) Immunity of the host cell to further viral infection. The release of new viruses Both A and B. C) D) e) Both A and C 14. Sporozeans (Ampicomplexans) are A) Motile by cilia and mostly nonparasitic B) Motile by rhizopodia and a few specles are parasitic. C) Nonmotile in the haplold state and parasitic D) Motile by flagella and often form colonies. 6) Nonmotile and parasitic. 15. A heterokaryon A) Any heterozygous organism B) An asexual spore produced by members of the phylum Basidiomycota C) A fungal cell containing genetically different nuclei. D) A diploid nonseed plant E) Not viable under most circumstances. 16. Malpighian tubules A) Assist echinoderms in motility 8) Regulate osmotic pressure in insect cells. C) Play a major role in digestion in insects D) Function in excretion in insects E) Secrete the exoskeleton in insects. 17. Which is true concerning animal viruses? A) Lack an envelope when they leave the host cell. 8) Attack the host cell by exocytosis C) Have an outer coat of nucleic acid. D) Some have RNA genomes. E) All of the above.Explanation / Answer
12) Option 'B' is the correct answer.
A direct consequence of indeterminate cleavage is the ability of cells isolated from the early embryo to develop into viable individuals. Indeterminate cleavage is a characteristic of deuterostomes. When the original cell in a deuterostome embryo divides, the two resulting cells can be separated, and each one can individually develop into a whole organism. This is a direct consequence of indeterminate cleavage.
13) Option 'E' is the correct answer.
The lytic cycle results in the destruction of the infected cell and its membrane. In the lytic cycle, once enough virions have accumulated, specialized viral proteins are allowed to dissolve the bacterial cell wall. The cell bursts due to high internal osmotic pressure (water pressure) that can no longer be constrained by the cell wall. This releases progeny virions into the surrounding environment, where they can go on to infect other cells.
14) Option 'E' is the correct answer.
All sporozoans are nonparasitic and non-motile in nature. Sporozoans are characterized by being one-celled, non-motile, parasitic, and spore-forming. Unlike most other protozoans, sporozoans have no cilia or flagella. All species are parasitic and have elaborate life cycles, often requiring more than one host.
15) Option 'C' is the correct answer.
A heterokaryon is a fungal cell containing genetically different nuclei. A heterokaryon is a cell containing two or more nuclei of different origin or in different states in a common cytoplasm. This can occur naturally, such as in the mycelium of fungi during sexual reproduction, or artificially as formed by the experimental fusion of two genetically different cells, as e.g., in hybridoma technology.
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