Q: What has the average global temperature done since the 1900s? Choices: - stayed constant - changed randomly - decreased - risen A:
risen

Q: One type of tissue, called brown fat, is made up of cells packed full of what? Choices: - proteins - Atoms - chromosomes - mitochondria A:
mitochondria

Q: Q: The extracellular matrix of most animal cells contains abundant amounts of what protein, which helps hold things together? Choices: - actin - elastin - keratin - collagen A:
A: collagen

Question: Q: What are compounds composed of only two elements called? Choices: - digital compounds - symbiotic compounds - kinetic compounds - binary compounds A:
Answer: binary compounds

*Question*
Q: What are interferons? Choices: - T cells - oncogenes - pathogens - cytokines A:
**Answer**
cytokines

Q: What is the process bacteria use to break down chemicals into food? Choices: - biosynthesis - gametogenesis - cellular respiration - chemosynthesis A:
chemosynthesis