Q: What is the name for unsaturated hydrocarbons that contain at least one double bond? Choices: - lipids - acids - enzymes - alkenes A:
alkenes

(Question)
Q: What does a virus inject into the host cell? Choices: - cells acid - Acetic acid - proteins acid - nucleic acid A:
(Answer)
nucleic acid

Ques: Q: In a fuel cell, energy is not stored; electrical energy is provided by what? Choices: - fusion reaction - carbon reaction - consumption reaction - chemical reaction A:
Ans: chemical reaction

(Q).
Q: An alloy is a mixture of what with one or more other substances? Choices: - acid - water - protein - metal A:
(A).
metal

Ques:Q: What is a group of similar ecosystems with the same general abiotic factors and primary producers called? Choices: - ecological environment - ecoculture - population - biome A:

Ans:biome

Q: What is the simplest life cycle? Choices: - diploid life cycle - binary life cycle - metamorphic cycle - haploid life cycle A:
haploid life cycle