Last Updated: Sep 07, 2026
No. of Questions: 80 Questions & Answers with Testing Engine
Download Limit: Unlimited
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| Section | Weight | Objectives |
|---|---|---|
| Evolution and Diversity of Life | 15–20% | - Mechanisms of evolution - Speciation and classification - Overview of major biological groups - Natural selection and adaptation |
| Basic Principles of Life | 20–25% | - Cell structure and function - Chemical foundations of life - Characteristics of living organisms - Scientific method and biological inquiry |
| Ecology and Interdependence | 15–20% | - Human impact on ecosystems - Population dynamics - Ecosystem structure and energy flow - Community interactions - Biomes and global ecology |
| Genetics and Heredity | 20–25% | - Mutation and genetic variation - Mendelian and non-Mendelian inheritance - DNA structure and replication - Chromosomes and cell division - Gene expression and protein synthesis |
| Energy and Metabolism | 15–20% | - Energy flow in biological systems - Photosynthesis - Enzymes and metabolic pathways - Cellular respiration |
Question 1
A primary consumer (e.g., an insect) derives energy from which level of the food chain?
A. Producers
B. Secondary consumer
C. Carnivore
D. Primary consumer
Question 2
Which genotype indicates an individual withno recessive alleles?
A. aaBB
B. AABB
C. aabb
D. AAbb
Question 3
The nucleus contains chromosomes that are replicated and passed to the next generation. One of the two macromolecules in chromosomes is themolecule of heredity. Which molecule is the hereditary material?
A. RNA
B. DNA
C. Proteins
D. Carbohydrates
Question 4

Using theTetrapod Cladogram (Node E), the common ancestor at locationEgives rise to which two organisms?(Choose 2 answers)
A. Gorilla
B. Salamander
C. Lizard
D. Tiger
Question 5
The Mojave Desert is hot and dry. Roadrunners (endothermic, ground-dwelling birds) already have adaptations that reduce daytime heat gain. If average temperatures rise as predicted, how is theirplumagemost likely to change under natural selection?
A. Become thicker to trap more heat
B. Become longer to increase heat absorption
C. Become darker to absorb more environmental heat
D. Become lighter to increase reflection of heat
Solutions:
| Question 1 Answer: A | Question 2 Answer: B | Question 3 Answer: B | Question 4 Answer: A,D | Question 5 Answer: D |
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