(Q).
Q: Birds are known for flying south in the winter to avoid what? Read this paragraph and choose the correct option from the provided answers: Choices: - solar radiation - rain - hurricanes - cold weather A:
(A).
cold weather

(Q).
Q: Because atoms are always electrically neutral, for each added proton, one of what is also added? Read this paragraph and choose the correct option from the provided answers: From left to right across the periodic table, each element has one more proton than the element to its left. Because atoms are always electrically neutral, for each added proton, one electron is also added. Electrons are added first to the lowest energy level possible until that level is full. Only then are electrons added to the next higher energy level. Choices: - ion - quark - neutron - electron A:
(A).
electron

(Q).
Q: The cytoplasm is all the contents of the cell inside the cell membrane, with the exception of what? Read this paragraph and choose the correct option from the provided answers: Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane , or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment. Ribosomes are the non-membrane bound organelles where proteins are made, a process called protein synthesis. The cytoplasm is all the contents of the cell inside the cell membrane, not including the nucleus. Choices: - vacuole - lysosome - molecules - nucleus A:
(A).
nucleus