Answer:
Density Independent
Explanation:
Density independent is the factor that will affect a population no matter its size. Temperature, natural disasters, and oxygen levels all influence this.
They both have magnitude.
The difference is that velocity has direction. You have to specify which way you are going with velocity. Speed is without direction. It only has an amount associated with it.
Answer:
A)
Concentration of hemoglobin = weight of the hemoglobin / total volume of RBCs
Therefore,
weight of the hemoglobin = concentration of the hemoglobin x Total volume of RBCs
weight of hemoglobin = (8.7x 10⁻¹¹ x 0.34) g
= 2.96 x 10⁻¹¹ g
B)
molar mass of hemoglobin is 64500g/mol.
molar mass (m) = number of moles (n) x M,
∴ n = m/M
so number of moles in 2.96 x 10⁻¹¹ g of hemoglobin with molar mass 64500g/mole
= 2.96 x 10⁻¹¹ / 64500
= 4.5 x 10⁻¹⁶ moles
using Avogadro’s number to calculate the number of molecules from moles.
1 mole = 6.022 x 10²³ molecules
so, 4.5 x 10⁻¹⁶ moles
= 4.5 x 10⁻¹⁶ x 6.022 x 10²³
= 2.71 x 10⁸ molecules
Explanation:
Note: Average volume of a red blood cell = 87 μm³ = 8.7 x 10⁻¹¹ ml
The mean concentration of hemoglobin in red cells = 0.34g/ml.
Answer:
Similarities:
Both natural selection and evolution work on genetic traits in populations rather than individuals. Both natural selection and evolution are involved in generating changes over generations. Both natural selection and evolution result in either extensions or death.
Difference:
Evolution is a gradual change in the inherited traits of a population over many generations. Natural selection is a mechanism where the members of a population best suited to their environment have the best chance of surviving to pass on their genes
