3.10 Mid Unit Assessment 1

Which shows the correct levels of organization from smallest to largest?

• atom, molecule, cell, organ, organ system, organism

• organism, cell, atom, molecule, organ, organ system

• atom, organism cell, organ, organ system, molecule

• organism, cell, organ, molecule, atom, organ system

Answer explanation

smallest unit of all things is the atom

Which shows the correct levels of organization from smallest to largest?

• population, organism community, ecosystem, biosphere

• organism, population, community, ecosystem, biosphere

• biosphere, ecosystem, community, population, organism

• organism, biosphere, community, ecosystem, population

Answer explanation

organism --> population --> community--> ecosystem --> biosphere

(biosphere is the largest unit)

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 
• receptor and effector
• static and dynamic
• minor and major

In a positive feedback loop, each action creates a consequence that _____________________ the other action.

• decreases

• has no effect on

• increases

According to the feedback loop, what does high blood sugar promote?

• Insulin Release

• Glucagon Release

• Insulin Uptake

• Glycogen Uptake

In a negative feedback loop, what is the response?

• It continues to increase.

• It decreases until it resumes its normal state.

• It decreases until it is lower than its normal state.

• It increases or decreases to bring the body back to normal state

Answer explanation

If too cold, the body's response is to INCREASE body temperature back to normal.

If too hot, the body' response is to DECREASE body temperature back to normal.

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 

• Positive Feedback Response
• Negative Feedback Loop 

What is the skeletal system responsible for?

• helping your body to breathe

• provide support for the body

• provide energy for the body

• waste elimination

Name the bone labelled as number 3.

• Femur

• Radius

• Ulna

• Humerus

Name the highlighted bone.

• humerus

• tibia

• radius

• ulna