Hermatypic organisms provide what to many ocean organisms?
Options:
- (A) survival
- (B) food and shelter
- (C) competition
- (D) kinetic energy
- (E) produce light
- (F) important habitats
- (G) protect them
- (H) major threat to health
--
Let's think first: Coral reefs provide food and shelter to many ocean organisms. Reef-building corals are hermatypic. Hermatypic organisms provide food and shelter to many ocean organisms.... So the answer is [(B)]

What comes from eggs?
Options:
- (A) pancakes
- (B) dogs
- (C) seeds
- (D) Allergies
- (E) snails
- (F) cats
- (G) pollen
- (H) sound
--
Let's think first: Mollusks are invertebrates such as the common snail. All mollusks come from eggs. The common snail comes from eggs.... So the answer is [(E)]

What can dna contain the instructions for?
Options:
- (A) keeps the organism warm
- (B) Something to move
- (C) Plant reproduction
- (D) a single protein
- (E) A computer
- (F) Animal survival
- (G) survival
- (H) an engine
--
Let's think first: Most genes contain the instructions for a single protein. Genes are made of DNA, the substrate of hereditary information. DNA can contain the instructions for a single protein.... So the answer is [(D)]

What have varied life cycles?
Options:
- (A) bacteria
- (B) fungi
- (C) Variety.
- (D) Cycles.
- (E) plants
- (F) Plants.
- (G) insects
- (H) Life of air.
--
Let's think first: Algae have varied life cycles. Some, such as the green algae, are plants. Some plants have varied life cycles.... So the answer is [(F)]

What have a centralized nervous system with a brain?
Options:
- (A) objects that have mass
- (B) warm-blooded
- (C) Earth orbiting the Sun
- (D) jellyfish
- (E) salmon only
- (F) bass only
- (G) bass and salmon
- (H) chickens
--
Let's think first: Fish have a centralized nervous system with a brain. Fish include bass and salmon. Bass and salmon have a centralized nervous system with a brain.... So the answer is [(G)]

What lacks walls and membranes?
Options:
- (A) deserts
- (B) flower cells
- (C) viruses
- (D) fungi
- (E) tree cells
- (F) bacteria
- (G) plant cells
- (H) alpacas
--
Let's think first: Viruses are not cells. Plant cells are surrounded by a cell membrane and a cell wall. Viruses do not have walls and membranes.... So the answer is [(C)]