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Biophysics Midterm 1 || Already Graded A+.
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  • Biophysics
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  • Biophysics

Cholesterol in the skin can be converted into Vitamin D by what? correct answers Ultraviolet B light LDL particles transport what through the bloodstream? correct answers Cholesterol 300 micrometers = how many meters? correct answers 300 x 10^-6 Name of the cells lining the inside of an ar...

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  • December 15, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • cholesterol in the skin can be converted into vita

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  • Biophysics
  • Biophysics

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Biophysics Midterm 1 || Already Graded A+.
Cholesterol in the skin can be converted into Vitamin D by what? correct answers Ultraviolet B
light

LDL particles transport what through the bloodstream? correct answers Cholesterol

300 micrometers = how many meters? correct answers 300 x 10^-6

Name of the cells lining the inside of an artery? correct answers Endothelial Cells

Approximately what is the thickness of the lens of the human eye?

a) It is about 5 x 10-3 meters thick
b) It is about 5 x 10-8 meters thick correct answers 5x10^-3 meters thick

20 gigawats = how many Watts? correct answers 20 x 10^9 watts

What is the average size of a red blood cell?

a) 7 ½ or 8 microns
b) 2 microns
c) 120 nanometers correct answers 2 microns

What is the meaning of the scientific term corneous?

a) Hard or "horn-like," as in the outer layer of the skin

b) Spongy, or full of holes (like the alveoli of the lungs)

c) Suitable for making into bread, tortillas and muffins. correct answers Hard or "horn-like" as
in the outer layer of the skin

What kind of blood cell may someday become a macrophage?

a) A platelet
b) A monocyte correct answers b) Monocyte

What term is used to describe the way that lymphocytes burrow between certain cells?

a) Hypoportation
b) Diapedesis correct answers b) Diapedesis

What is a unit of energy intensity?

a) Joule

, b) Watt
c) Watt/ meter2 correct answers Watt/Meter^2

Suppose that a salt crystal measures 200 microns on one side. How is that written using
exponents?


a) 200 x 10-6 meters
b) 200 x 10-12 meters correct answers 200 x 10^-6 meters

A normal level of blood sugar (glucose) when you first wake up in the morning might be around
90 mg/dL. What is a deciliter?

a) One tenth of a liter
b) One thousandth of a liter correct answers One tenth of a liter

Who discovered that the function of the HDL particle is to carry cholesterol back from tissues to
the Liver?

a) Donald Fredrickson, ~ 1965
b) Rosalyn Yalow, ~1950 correct answers Donald Fredrickson

Who first developed the physics concept of the Force of Buoyancy?

a) Archimedes (a couple millennia ago)
b) Newton (1643) correct answers Archimedes

If particle B has twice the radius of particle A how much faster will B settle through the water?

a) 1.2 times as fast as A
b) Four times as fast correct answers Four times as fast

What equation did newton develop? correct answers F = ma

The force experienced by an object during a collision depends on what factors?

a) Mass of object and rate of deceleration
b) Mass of object and approximate width or diameter of object correct answers Mass of object
and rate of decceleration

Diastole refers to what in terms of heart pumping?

a) It refers to when the heart is filling
b) It is when the heart is standing still correct answers It refers to when the heart is filling

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