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Biology & Geology

Chapter 2 - Hormonal Coordination in Living Organisms

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Chapter 3 - Reproduction in Living Organisms

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Chapter 4 - Immunity in Living Organisms

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Chapter 5 - Molecular Biology - DNA Structure and Function

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Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

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Quiz

Lesson 1 Quiz: Endocrine Glands, The Pituitary, Thyroid and Parathyroid Glands

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1.
The volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A torsion balance
A hydrometer
A venturi meter and manometer
2.
The volume expansion coefficient at constant pressure (alpha_v) and the pressure expansion coefficient at constant volume (beta_p) for all ideal gases have the universal constant value of:
273.15 K
1.013 x 105 Pa
8.314 J/(mol.K)
1 / 273.15 K−1 (approx. 0.00366 K−1)
3.
The nitrogen molecule (N2) contains a:
Double covalent bond
Single ionic bond
Triple covalent bond (one sigma bond and two pi bonds) sharing 3 electron pairs
Coordinate dative bond
4.
Monocytes are functionally capable of leaving the bloodstream when needed:
Antibody formation
Transform into active macrophages to engulf microbes and cellular debris
Transformation into B cells
Histamine secretion
5.
An air bubble released from the bottom of a deep lake expands in volume as it rises towards the surface because:
Atmospheric pressure increases at the surface
The hydrostatic pressure decreases as depth decreases, allowing the trapped air to expand according to Boyle's law
The water temperature at the surface is near absolute zero
The bubble absorbs water molecules into its gas phase
6.
Pascal's principle states that when pressure is applied to an enclosed, incompressible fluid, it is transmitted:
Only downwards towards the bottom of the vessel
Strictly to compressible gases
Undiminished to every portion of the fluid and to the walls of the containing vessel
With an exponential decay as distance increases
7.
If both the absolute temperature and the absolute pressure of a confined ideal gas are doubled, the volume of the gas:
Remains constant and unchanged
Quadruples
Decreases to one-fourth
Doubles to twice its original volume
8.
Injection with serum (Antiserum) containing ready-made antibodies to neutralize scorpion venom gives the patient immunity:
Cellular induced
Innate
A rapid and temporary acquired negativity that is not accompanied by memory cells
Lasting positivity
9.
The Cairo Monorail travels on an elevated single-beam track to avoid urban traffic ________.
stations
comfort
congestion
gardens
10.
The contraceptive method that prevents the fertilized egg from settling in the uterine lining without hindering the ovulation or fertilization processes is:
Surgical ligation of the fallopian tubes
IUD
Contraceptive pills
Condom
11.
Which of the following solutions has the lowest pH value (strongest acidity) at equal concentration?
CH3COOH
NH4OH
NaCl
HCl
12.
The hormone responsible for maintaining the balance of minerals in the blood by stimulating the reabsorption of sodium ions and eliminating excess potassium through the kidneys is:
Aldosterone
Insulin hormone
Cortisol hormone
Thyroxine hormone
13.
The density of an ideal gas at temperature T and pressure P is rho. If the pressure is tripled and the absolute temperature is halved, the new density becomes:
6 rho (since rho is proportional to P / T)
3 rho
1.5 rho
0.67 rho
14.
The enzyme responsible for constructing an mRNA strand from one of the two DNA strands (template strand 3' to 5') he:
RNA polymerase
Binding enzyme
DNA polymerase enzyme
Palace enzyme
15.
Immunoglobulin (antibody), which exists as a pentamer and contains 10 sites to bind to the antigen is:
IgM
IgG
IgA
IgE
16.
Charles's Law establishes that at constant pressure, the volume of a given mass of gas is directly proportional to its:
Celsius temperature only
Atmospheric density
Absolute temperature in Kelvin (T_K = t_C + 273.15)
Square of the absolute temperature
17.
The cells that secrete the hormones oxytocin and ADH and store them in the posterior lobe of the pituitary gland are:
Apocrine neurons in the hypothalamus (hypothalamus)
Glial cells
Frontal lobe glandular cells
Pineal gland cells
18.
In a U-tube manometer containing two immiscible liquids in equilibrium, the heights of the liquid columns measured above the separating surface are:
Equal regardless of the liquids used
Proportional to the square of the cross-sectional area of the tube
Inversely proportional to their respective densities (h1 / h2 = rho2 / rho1)
Directly proportional to their densities
19.
When severe dehydration and decreased blood volume and body fluids occur, which of the following hormonal changes occur?
ADH decreases and insulin increases
Calcitonin secretion increases
Thyroxine secretion stops
The secretion of ADH and aldosterone increases to restore water and salts
20.
A U-tube contains water (ρ = 1000 kg/m3) and oil (ρ = 800 kg/m3). If the oil column height above the interface is 10 cm, the balancing water column height is:
8 cm
6.4 cm
12.5 cm
10 cm
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