WorksheetsHomeostasis & Regulation
Total questions: 19
Worksheet time: 10mins
Which of the following is an example of a positive feedback loop?
Thermoregulation
Osmoregulation
Blood Sugar Regulation
Fruit Ripening
In a negative feedback loop...
The output amplifies the input
The output stabilizes the input
The input amplifies the output
The input stabilizes the output
In a feedback loop, the organ that does the response is called the...
Receptor
Stimulus
Effector
Responder
An action that causes a response is called a...
Stimulus
Effector
Response
Receptor
Most biological catalysts are...
Enzymes
Hormones
Nucleic Acids
Phospholipids
Which of the following would NOT slow down the rate of a chemical reaction?
A chemical inhibitor
A sudden decrease in temperature
A sudden increase in pH
The presence of more receptors
Which form of cellular transport moves molecules against the concentration gradient?
Simple Diffusion
Facilitated Diffusion
Osmosis
Molecular Pumps
Which of the following molecules would not be able to be transported via simple diffusion?
Small, nonpolar molecules
Water
Lipid-soluble molecules
Hydrophilic Molecules
A cell in a hypertonic solution will...
Shrivel
Swell
Stay the Same
Facilitated diffusion...
Requires energy
Goes against the concentration gradient
Transports large, non-polar molecules
Uses proteins as channels & carriers
White blood cells engulfing bacteria in order to fight infection is an example of...
Endocytosis
Exocytosis
Osmosis
Diffusion
In cell signaling, ligands bond to...
Phospholipids
Receptor Proteins
DNA
Cytoplasm
For an autocrine signal...
The signaling cell & target cell are the same
The signaling cell & target cell are close by
The signaling cell is distant from the target cell
The signaling cell is touching the target cell
Neurotransmitters are an example of a/an...
Autocrine Signal
Paracrine Signal
Juxtacrine Signal
Endocrine Signal
Which of the following is an example of an endocrine signal?
Prostaglandins
Growth Factors
Paracrines
Hormones
Intracellular receptors bind with ligands that are... (Select ALL that apply)
Small
Large
Polar
Nonpolar
Which receptors does caffeine act as an inhibitor to?
Adenosine
Dopamine
Seratonin
Glycine
How is a signal passed down in the transduction phase of a signal transduction pathway?
Through changing the shape of a protein
Through cell signaling
Through enzymes & chemical reactions
Through opening of ion channels
What is the role of a second messenger in a signal transduction pathway?
To regulate the stimulus
To regulate the signal
To regulate the response
To regulate the receptor
