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a scientists is studying an unknown cell under the microscope. she observes that the cell has a cell wall, ribosomes, but no organelles nor nucleus. based on these observations she can conclude that the cell is most likely: a bacteria cell, b: an archaea, C: a plant cell, D: an animal cell E: a prokaryotic cell
E: prokaryotic cell
unlike prokaryotic cells, eukaryotic cell A. have no nucleus B. have membrane bound organelles C. have no ribosomes D. lack a cytoplasmic membrane E. none of these
B. have membrane bound organelles
which of the following organelles have ribosomes attached to them? A. mitochondria B. smooth Endoplasmic reticulum C. Rough endoplasmic reticulum D. lysosome E. peroxisomes
rough endoplasmic reticulum
a scientists is studying an unkonwn cell under the mircroscope. she ovserves that the cell has a nucleus, chloroplasts, a cell wall, and a large central vacoule that occupies 90% of the cytoplasm. based on these observations she can conclude that the cell is most likely: A. an archaea B. a bacteria C. an animal cell D. a plant cell E. a prokaryotic cell
D. a plant cell
Penicillin acts by inhibiting peptidoglycan cell wall synthesis in bacteria. it has been very effective against the bacteria that cause syphillis and against staph infections. Why does penicillin kill bacteria but does not harm your normal body cells? (assume that you do not have an allergic response to penicillin) A. human cells dont have cell walls that bacterial cells do B. human cells dont have ribosomes that bacterial cells do C. human cells dont have cell membranes that bacterial cells do D. human cells do not have DNA that bacterial cells do E. human cells do not have cytoplasm that bacterial cells do
A. human cells do not have the cell walls that bacterial cells do
which organelle captures energy from sunlight. A mitochondria B. cell nuclei C. the Golgi Complex D. chloroplasts E. proteins
which of the follwing is not part of cell theory? A. all living things are made of cells B. the cell is the basic unit of life C. only eukaryotes are made of cells D. anything smaller than a cell is not alive E. new cells arise only from preexisting cells
C. only eukaryotes are made of cells
which of the following structures would not be found in a prokaryotic cell? A. cell wall B. capsule C. nucleus D. Plasma membrane E. Ribosome
what domain contains medically important fungi? A. bacteria B. fungi C animalia D. prokaryae E eukaryae
a scientists is studying an unknown cell under the microscope. He observes that the cell has a nucleus, no cell wall, an no large central vacoule. based on these ovservations he can conclude that the cell is most likley: A. bacteria cell B. prokaryotic cell C. an archaea D. a plant cell E. an animal cell
E. an animal cell
examples of homeostasis are our ability to__ A. maintain our normal body temp at 37 B. maintain our bloods pH at 7.4 C. sweat during exercise D. reproduce E. ABC only
D. ABC only
the basic unit of structure and function for all life is the A. atom B. molecule C. cell D. organ E. organism
which of the following levels of organization is not included within the level of organism A. organ B. cell C. Tissue D. organ system E. population
which of the following is not a characteristic of all living organisms? A. response to stimuli B. adaptation C. sexual reproduction D. regulaiton of internal environment E. acquisition of energy
C. sexual reproduction
the major driving force behind evolution is A. natural selection, B. metabolism C. homeostasis D. photosynthesis E. organization
A. natural selection
the unity and diversity of living organisms on our planet can best be explained by which of the the following processes A. taxonomy B. metabolism C. evolution D. homeostasis E. reproduction
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