PBS

A soap manufacturer wants to prove that their detergent works better to remove tough stains. What is the dependent variable?

• Amount of detergent

• Type of detergent

• Stain removal

• Length of time washing

Tags

NGSS.HS-PS1-5

The force of blood on the vessels during contraction and relaxation of the heart.

• Heart Rate

• Skin Conductivity

• Blood Pressure

• Respiration Rate

Tags

NGSS.MS-PS3-5

If someone is In fight or flight, when heart rate increases, respiratory rate...

• Decreases

• Increases

• Stays the same

Tags

NGSS.HS-LS1-3

What is produced by your body in response to foreign antigens, such as the wrong type of blood?

• Agglutinates

• Clotting factors

• Antibodies

• Phagocytes

During a school science fair, Sophia, Liam, and Ethan decide to demonstrate the working of a polygraph machine. What does the polygraph machine measure in their demonstration?

• Detects eye movement of the person tested

• Detects lies from physiological responses of the person tested

• Detects the severity of an emotion of the person tested

• Detects differences in brain activity of the person tested

Liam, Hannah, and William are playing detectives in their school play. Liam, who is playing the role of a forensic scientist, found a fingerprint at a mock crime scene. He needs to match the fingerprint pattern to its type. Can you help him?

• Loop

• Whorl

• Helix

• Arch

Harper, Charlotte, and Avery are playing detectives in their school play. Harper, who is playing the role of a forensic scientist, found a fingerprint at the mock crime scene. She needs to match the fingerprint pattern. What pattern could it be?

• Loop

• Whorl

• Helix

• Arch

Isla, Abigail, and Grace are playing detectives in their school play. Isla, playing the role of a forensic scientist, finds a fingerprint at the mock crime scene. Besides ridge patterns, she needs to use another pattern to match this fingerprint. What is this additional pattern called?

• Medulla

• Keratin

• Whorls

• Minutiae

PBS is commonly used in laboratories for which purpose?

• A buffer solution

• A staining agent

• A disinfectant

• A nutrient medium

What does PBS stand for in a scientific context?

• Phosphate Buffered Saline

• Potassium Bromide Solution

• Polymer Based Substance

• Protein Binding Serum