Question 28 In the sexual life cycle of Paramecium, the cytoplasmic bridge in two conjugating cells help in the exchange of: Two macronuclei Two micronuclei Four macronuclei Four micronuclei Moving to another question will save this response. Question 29 Protists with the capabilities to perform photosynthesis and to absorb nutrients from dead organisms are called O photoautotrophs O mixotrophs O saprobes heterotrophs Moving to another question will save this response.