Energy , Systems, and Response

A type of feedback where the response keeps increasing until the stimulus/disturbance is over.

• Positive Feedback

• Negative Feedback

A type of feedback where there is a check and balance system that is used to reverse or counteract the disruption or distrubance.

• Positive Feedback

• Negative Feedback

Based on this diagram, which 2 systems interact to maintain homeostasis?

• The nervous and reproductive systems work together to stimulate the production of insulin

• The circulatory and endocrine systems work together to keep blood sugar levels constant.

• The excretory and nervous systems work together to convert glycogen into glucose

• The immune and circulatory systems work together to circulate blood through the pancreas

The female reproductive and endocrine systems work interactively for which main purpose?

• To maintain homeostasis by removing waste products from the body

• To release neuro transmitters during times of stress

• To control hormone levels to prepare the body for pregnancy

• To exchange gases to support cellular aerobic respiration

A student plants to fill out this table with phrases that describe an interaction between each pair of systems. Which of these phrases could be placed in the position marked with an X?

• Provides nutrients to kidney cells

• provides nutrients to brain cells

• provides nutrients to nerve cells

• provides nutrients to muscle cells.

Scientist studying illnesses caused by chemically contaminated food conduct research to minimize the effects of these diseases. The chemicals harm the body through the digestive and immune system. Research scientist are likely to describe which of these interactions ?

• Chemicals enter the immune system through a break in the skin. The chemical contamination is then passed to the digestive system by the circulatory system

• The immune system transforms the chemicals in the contaminated foods into harmless chemicals. These harmless chemicals are then broken down by the digestive system.

• When contaminated foods are eaten, the immune system prevents the chemicals from entering the digestive system.

• Chemicals enter the digestive system through contaminated foods. Once in the body, the chemical contaminants impair the body's abilityto fight off infectious diseases.

How do the circulatory system and immune system work together to respond to an injury?

• Increased blood flow carries white blood cells to the site of the injury

• Increased blood flow kills healthy cells which prevents infection at the site of the injury.

• Increased blood flow removes infected cells from the body at the site of the injury

• Increased blood flow allows for an increase in the exchange of O₂ and CO₂ at the site of the injury

Fruits grown in hot climates are usually less sweet than those grown in cooler temperatures. The high temperatures increases the rate of cellular respiration in the plants, thus reducing the sugar content in some fruits.

Why does increased respiration in the leaves and stems reduce the sugar content in the fruit of the plant?

• Chloroplast move from the fruits to the leaves and stems to provide energy

• The flow of nutrients shifts from the phloem to the xylem, moving nutrients away from the fruits.

• Sugars are moved from the fruits to the roots for storage

• Sugars produced in the leaves are used as an energy source instead of being stored in fruits.

Which system interactions are dependent on the plant's ability to respond to the direction of light?

• Option 1

• Option 2

• Option 3

• Option 4

In order for the plant to reproduce...

• Pollen found in B has to move to the egg H

• The Egg in H has to come out to the pollen made in E

• The pollen made by D has to move down to fertilize the egg inside G

• C has to physically touch D