which of these structures contains RNA but not DNA?
Responda
mitochondrion
ribosome
nucleus
chloroplast
Questão 2
Questão
what is the function of the Golgi apparatus?
Responda
to synthesise ATP
to make proteins from amino acids
to aid endocytosis
to make secretory products
Questão 3
Questão
what is the name of the structures which penetrate the walls of adjacent plant cells?
Responda
plasmodesmata
middle lamellae
pits
channels
Questão 4
Questão
cells in a culture will absorb amino acids from the surrounding culture medium. If radioactively labeled glycine is provided in the culture medium, in which organelle will radioactivity be found first?
Responda
nucleus
ribosomes
lysosomes
Golgi apparatus
Questão 5
Questão
what resolution does a light microscope have?
Responda
20μm
2μm
0.2μm
0.02μm
Questão 6
Questão
which of these cell structures does not have an envelope?
Responda
nucleus
mitochondrion
chloroplast
lysosome
Questão 7
Questão
what are observable "brush borders" found on intestinal epithelial cells?
Responda
cilia
villi
microvilli
flagella
Questão 8
Questão
which of the following is concerned with the synthesis and transport of lipids and steroids in the cell?
Responda
rough ER
smooth ER
lysosome
Golgi apparatus
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