Answer the following question given this paragraph: Our solar system began about 5 billion years ago. The Sun, planets, and other solar system objects all formed at about the same time. The leading hypothesis for how they formed is called the nebular hypothesis . Q: Approximately how many billion years ago did our solar system begin? Choices: - four billion - three billion - nine billion - five billion A:
five billion
Answer the following question given this paragraph: Specialized cells may be organized into tissues. A tissue is a group of cells of the same kind that performs the same function. For example, muscle cells are organized into muscle tissue. The function of muscle tissue is to contract in order to move the body or its parts. Q: What do you call a group of cells of the same kind that performs the same function? Choices: - nucleus - molecule - organ system - tissue A:
tissue
Q: Answer the following question given this paragraph: Many skeletal muscles are attached to the ends of bones where they meet at a joint. The muscles span the joint and connect the bones. When the muscles contract, they pull on the bones, causing them to move. Q: Where do skeletal muscles usually attach? Choices: - to cartilage - to dendrites - to the spine - end of bones A:
A: end of bones
Question: Answer the following question given this paragraph: Water also moves through the living organisms in an ecosystem. Plants soak up large amounts of water through their roots. The water then moves up the plant and evaporates from the leaves in a process called transpiration . The process of transpiration, like evaporation, returns water back into the atmosphere. Q: Water moving up the plane and evaporating from the leaves is a process known as what? Choices: - propagation - sublimation - evaporation - transpiration A:
Answer: transpiration
*Question*
Answer the following question given this paragraph: Many amino acids can be linked together to form a long chain known as a protein . These linkages are formed when the carboxylic acid of one amino acid reacts with the amine of another to produce an amide (see Figure below ). Q: What is formed when amino acids are linked together in a long chain? Choices: - amino acid - hormones - water molecule - protein A:
**Answer**
protein
(Q).
Answer the following question given this paragraph: All living things need energy. They need it to power the processes of life. For example, it takes energy to grow. It also takes energy to produce offspring. In fact, it takes energy just to stay alive. Remember that energy can't be created or destroyed. It can only change form. Energy changes form as it moves through ecosystems. Q: Energy cannot be created or destroyed - it can only change what? Choices: - kind - fluid - shape - form A:
(A).
form