LUOA life Science Exam Questions with Correct Answers

LUOA life Science Exam Questions with Correct Answers Humans have bacteria inside their intestines. The bacteria help to digest some foods, and they produce vitamins that the body cannot manufacture. In turn, the bacteria have a place to live and a constant supply of food. What type of relationship exists between humans and bacteria? - Answer-Mutualism Humans have bacteria inside their intestines. The bacteria help to digest some foods, and they produce vitamins that the body cannot manufacture. In turn, the bacteria have a place to live and a constant supply of food. If these bacteria had a gradual change that caused them to use up more of the food that humans need, and humans were harmed because there were not enough nutrients left over, the resulting relationship would be that of _______________________________. - Answer-Parasitism Predators have relationships with prey. These relationships are similar to the relationships between hosts and ________________. - Answer-Parasites Any time that hosts are harmed by an unwanted pest, the relationship occurring is called - Answer-Mutualism Any relationship in which both species are benefitted is called _____________________. - Answer-Mutualism Any relationship in which one organism is benefitted and the other organism is not benefited but is unharmed is called _________ - Answer-Commensalism Rabbits are parasites because wolves eat them. - Answer-True A heartworm is a parasite because it harms dogs' hearts. - Answer-True A relationship where a bacterium lives inside a host but does not benefit or harm the host would be classified as mutualism. - Answer-False If organism one harms organism two over a long period of time, and organism one benefits, we would classify this relationship as parasitism. - Answer-True