Q: What is the skeleton of the cell? Choices: - cytoplasm - cell membrane - cell wall - cytoskeleton A:
cytoskeleton

(Question)
Q: Density is defined as the mass of an object divided by its what? Choices: - size - liquid - growth - volume A:
(Answer)
volume

Ques: Q: The right atrium receives all of the systemic venous return. most of the blood flows into either the superior vena cava or this? Choices: - resulted vena cava - identical vena cava - exterior vena cava - inferior vena cava A:
Ans: inferior vena cava

(Q).
Q: The purpose of scientific investigations generally is to test a what? Choices: - theory - question - suggestion - hypothesis A:
(A).
hypothesis

Ques:Q: What type of organism has many different specialized cells that work together to carry out life processes? Choices: - single-celled organism - mutated organism - sequenced organism - multicellular organism A:

Ans:multicellular organism

Q: What are the earliest and simplest vertebrates? Choices: - whales - birds - bears - fish A:
fish