GenBio

The nervous system protect and support the body and they act as reservoir for calcium and other minerals.

False

Which of the following does not belong to the group?

Blood clotting

Child birth

Lactation

Production of RBC

Production of RBC

When we are cold we shiver. This releases heat from which organ system?

Muscular System

Which of these organ systems stores important ions such as phosphorous and calcium?

Skeletal System

The root system, which supports the plants and absorbs water and minerals, is usually underground.

True

Phloem is a vascular tissue that transports water and mineral solutes upward through the plant body.

False

The immune system protects against infection, injury and cancer.

True

Xylem is vascular tissue that conducts organic solutes in plants.

False

Which of these is not a function carried out by the Integumentary system?

storage of fats

What is most likely a homeostatic response to an increase in environmental temperature?

Producing sweat

Which of the following statements is true about positive feedback?

The result or response enhances the original stimulus, and the response is accelerated.

Which of these is not a function carried out by the Integumentary system?

storage of fats

Which of the following statements is true about positive feedback?

The result or response enhances the original stimulus, and the response is accelerated.

What is most likely a homeostatic response to a decrease in environmental temperature?

Blood vessel constriction

Goosebump formation

All given options are possible.

Shivering and muscle contraction

All given options are possible.

When we are cold we shiver. This releases heat from which organ system?

Muscular System

Blood is the transport medium consisting of the plasma and formed elements that circulate throughout the body.

True

The removal of organic wastes from the body is accomplished by which system?

Excretory System

The shoot system consists of two portions: the vegetative (non-reproductive) parts of the plant, such as the leaves and the stems; and the reproductive parts of the plant, which include flowers and fruits.

True

Which of the following statements is false?

• Negative feedback loops might occur in nature like in the case of the carbon cycle where the cycle is balanced according to the concentration of carbon emission.

• An example of a negative feedback loop is the production of RBCs by the kidneys when the decreased level of oxygen is sensed in the body.

• Thermoregulation works by the positive feedback loop where once the body temperature is either increased or decreased beyond its normal temperature,
  it is brought back to normal.

• Positive feedback loops, like negative loops, can be observed in nature during the ripening of the fruits in trees. After the ripening of one fruit, it gives off ethylene gas that when exposed to the nearby fruits, ripens them as well.

• Thermoregulation works by the positive feedback loop where once the body temperature is either increased or decreased beyond its normal temperature,
  it is brought back to normal.

The root system, which supports the plants and absorbs water and minerals, is usually underground.

True

Give an example of homeostasis

Normal body temperature is always about 37 degrees Celsius.

Vascular plants have two distinct organ systems: a shoot system and a root system.

True

• The result or response enhances the original stimulus, and the response is accelerated.

Positive feedback

Example of negative feedback

	Air conditioning goes off when room temperature lowers.
	• Insulin decreases blood sugar levels after a meal.
	Heart rate increases when blood pressure drops.

Transport systems of animals have open or closed circulatory systems used to exchange materials with the external environment.

True

Which of these organ systems stores important ions such as phosphorous and calcium?

Skeletal System

Which of these is not a function carried out by the Integumentary system?

Storage of fats

Phloem is a vascular tissue that transports water and mineral solutes upward through the plant body.

False

The immune system protects against infection, injury and cancer.

True