(Q).
Q: The common cold and flu are examples of human diseases caused by what tiny particles? Read this paragraph and choose the correct option from the provided answers: Viruses , like the one depicted in Figure below , are tiny particles that may cause disease. Human diseases caused by viruses include the common cold and flu. Do you think viruses are prokaryotes or eukaryotes? The answer may surprise you. Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. Choices: - infections - parasites - bacteria - viruses A:
(A).
viruses

(Q).
Q: When cats mark their territory by rubbing their face against an object, they deposit chemicals released by what structures? Read this paragraph and choose the correct option from the provided answers: Some animals deposit chemicals to mark the boundary of their territory. This is why dogs urinate on fire hydrants and other objects. Cats may also mark their territory by depositing chemicals. They have scent glands in their face. They deposit chemicals by rubbing their face against objects. Choices: - whiskers - pituitary glands - taste buds - scent glands A:
(A).
scent glands

(Q).
Q: Skeletal muscles are attached to bones by what? Read this paragraph and choose the correct option from the provided answers: Skeletal muscles are attached to bones by tendons. Choices: - plasma - enzymes - veins - tendons A:
(A).
tendons