PBS

What is the correct order of organization?

• molecule - tissue - organ system - organ

• tissue - molecule - cell - organ - organ system

• organism - organ - organ system - tissue

• cell - tissue - organ - organ system - organism

Tags

NGSS.HS-LS1-2

Which tissue type sends and receives messages throughout the body?

• Cardiac

• Nervous

• Epithelial

• Connective

Select all that are parts of the central nervous system.

• brain

• spinal cord

• nerves

• capillaries

Nerves leaving the spinal cord and extending throughout the body are part of the ___.

• peripheral nervous system

• central nervous system

• appendexterous nervous system

• evolutionary nervous system

This gross anatomy image demonstrates an injury associated with

• Traumatic Brain Injury (TBI).

• Chronic Traumatic Encephalopathy (CTE).

• a normal brain image.

This gross anatomy image demonstrates an injury associated with

• Traumatic Brain Injury (TBI).

• Chronic Traumatic Encephalopathy (CTE).

• a normal brain image.

This microscopic image of a histology section of a brain demonstrates the white spaces associated with swelling in a brain that has experienced

• Traumatic Brain Injury.

• Chronic Traumatic Encephalopathy.

• Neither. This image is of a normal brain.

PBS is commonly used in laboratories as a buffer solution. What does PBS stand for?

• Phosphate Buffered Saline

• Potassium Buffered Solution

• Phosphorus Bicarbonate Solution

• Polymer Buffered Saline

Which of the following is a primary use of PBS in biological experiments?

• To stain cells

• To fix tissues

• To maintain pH balance

• To increase cell growth

PBS is often used in cell culture. What is its main role in this context?

• To provide nutrients

• To act as a growth factor

• To wash cells and remove excess serum

• To increase cell adhesion