Ukuran huruf
Lembar kerjaBiology quiz
Total soal: 20
Worksheet time: 13mins
What is part A on the Electrocardiogram
P wave
QRS complex
T wave
What is part B on the electrocardiogram
P wave
QRS complex
T wave
What is part C on the electrocardiogram
P wave
QRS complex
T wave
A microscope has a magnification of 40X. A cell appears to be 400 μm in length. How long is the actual cell
10 μm
40 μm
100 μm
20 μm
Convert 85 mm into μm
850 μm
450 μm
85000 μm
8500 μm
convert 350 μm into mm
0.35 mm
0.035 mm
3.5 mm
35 mm
A microscope has a magnification of 150X. A cell appears to be 900 μm in length. How long is the actual cell
0.002 mm
0.004 mm
0.006 mm
6 mm
True or False: An electron microscope gives a higher resolution than a light microscope.
True
False
Only in certain conditions
Select the best answer to the question: Explain why a scientist might choose to use an electron microscope rather than a light microscope.
The light microscope won't show as much and it doesn't make the picture as bigger as the electron microscope.
Electron microscope is better for a scientist to choose than a light microscope it uses electrons and not light.
An electron microscope gives a greater magnification and better resolution than a light microscope.
Scientists might need to choose the electron microscope because it is cheaper and easier than the light microscope.
The nerve cells in your body are called neurons. From the picture which part of the neuron is most likely responsible for carrying signals between the dendrite and axon terminal?
soma
axon
Node of Ranvier
Schwann cell
What causes the release of neurotransmitters into the cleft?
an action potential reaches the terminal
ligand gated ion channels open
excititory neurotransmitters bind to ligand gated ion channels
an action potential on the post synaptic neuron triggers nearby voltage gated ion channels
Drugs have their effects because they
mimic some neurotransmitters
cause neurotransmitters to be released without a signaling action potential
block the re-uptake of some neurotransmitters
cause action potentials to move in reverse along the axon
