Biology EOC Review #3

This diagram shows a pedigree for a recessive genetic disorder. What is. the genotype of individual 6?

• X^HX^H

• X^HX^h

• X^HY

• X^hY

Answer explanation

Individual 6 is male, with the condition.

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Which is an example of a learned behavior?

• A bear cub practices catching salmon the way its mother does.

• A baby gazelle rises to its feet within a few minutes of its birth.

• A baby kangaroo climbs into its mother's pouch as soon as it is born.

• An adult salmon returns to its freshwater stream when it is time to reproduce.

Answer explanation

Learned behaviors are just that-- they must be taught and learned through practice. Most animals instinctively get on their feet to walk. They instinctively follow their mother. Salmon instinctively return to a certain location for spawning.

Sandworms are annelid worms that live on the seafloor. They absorb oxygen and excrete wastes through their skin. Which characteristic will best help the worm carry out these functions?

• large number of hearts

• large diameter blood vessels

• large mouth compared to body volume

• large surface area compared to body volume

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Which reproductive adaptation is more characteristic of mammals than amphibians?

• external fertilization with internal development

• internal fertilization with internal development

• external fertilization with external development

• internal fertilization with external development

What kingdoms did Carolus Linnaeus originally use for his classification system?

• Fungi & Protista

• Fungi & Animalia

• Plantae & Protista

• Plantae & Animalia

Answer explanation

Linnaeus was an early botanist and biologist. With the limited technology of the time, organisms were split into plants and animals.

After initial infection, B-cells recognize the measles virus. How is this helpful in human immune response?

• The B-cells use this recognition to defend the body against other pathogens, such as bacteria.

• The B-cells more quickly recognize and respond to any other virus that invades the body.

• The B-cells produce antibodies more quickly if the measles virus is encountered again.

• The B-cells transfer this recognition to T-cells, which will then devour the viruses.

Answer explanation

The whole purpose of antibodies is to help fight infections later. Once B-cells recognize a virus, they can ramp up antibody production.

What is the main function of leaves?

• Leaves provide support for growth and a place to store food.

• Leaves provide a place for photosynthesis to occur.

• Leaves absorb water and minerals and transport nutrients to the stem.

• Leaves create a barrier that prevents water in the plant's tissues from evaporating.

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In an ecosystem, which is the most likely reason for an increase in the producer population if there is an increase in the carnivore population?

• fewer herbivores

• higher temperatures

• less food

• more oxygen

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A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7. Which is the best conclusion for this experiment?

• Acid has no effect on the health of this type of plant.

• High acidity is helpful to this type of plant.

• Low acidity is harmful to this type of plant.

• High acidity is harmful to this type of plant.

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Which graph represents the maximum carrying capacity of a bacterial colony?

• 
• 
• 
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