which of these structures contains RNA but not DNA?
Answer
mitochondrion
ribosome
nucleus
chloroplast
Question 2
Question
what is the function of the Golgi apparatus?
Answer
to synthesise ATP
to make proteins from amino acids
to aid endocytosis
to make secretory products
Question 3
Question
what is the name of the structures which penetrate the walls of adjacent plant cells?
Answer
plasmodesmata
middle lamellae
pits
channels
Question 4
Question
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?
Answer
nucleus
ribosomes
lysosomes
Golgi apparatus
Question 5
Question
what resolution does a light microscope have?
Answer
20μm
2μm
0.2μm
0.02μm
Question 6
Question
which of these cell structures does not have an envelope?
Answer
nucleus
mitochondrion
chloroplast
lysosome
Question 7
Question
what are observable "brush borders" found on intestinal epithelial cells?
Answer
cilia
villi
microvilli
flagella
Question 8
Question
which of the following is concerned with the synthesis and transport of lipids and steroids in the cell?