Answer:
the periodic table
Explanation:
the periodic table show all the element to your answer
Answer:
2.94 × 10²⁰ N/C
Explanation:
Given that:
The nucleus of "Lead-208 has 82 protons,
with a radius (r) 6.34×10-15 m, &
each electric charge has a value of 1.60218 × 10^-19 C
∴ The formula for calculating an electrical field at the surface of the nucleus is:
Substituting our values into the equation above, we have;
E =
E = 2.93870499×10²⁰ N/C
E ≅ 2.94 × 10²⁰ N/C
Answer:
The correct answer is The energy in the glucose is stored as kinetic energy in the ATP and released as potential energy when the molecule moves across the cell membrane.
Explanation:
Potential energy is required to move a molecule across the plasma membrane. This potential energy is derived from the hydrolysis of ATP in which(ATP) the energy is stored as kinetic energy.
ATP hydrolysis releases potential energy to drive the movement of molecule across the plasma membrane.
Answer:
The answer is B. Van der Waals forces are weaker than ionic and covalent bonds.
Explanation:
In general, if we arrange these molecular forces from the <u>strongest to weakest</u>, it would be like this:
<h3>Covalent bonds > Ionic bonds > Hydrogen bonds > Dipole-Dipole Interactions > Van der Waals forces</h3><h3 />
Covalent bonds are known to have the strongest and most stable bonds since they go deep and into the inter-molecular state. A diamond is an example of a compound with this characteristic bond.
Ionic bonds are the next strongest molecular bond following covalent bonds. This is due to the <u>protons and electrons causing an electro-static force</u> which results to the strong bonds. An example would be <em>Sodium Chloride (NaCl)</em>, which when separated is <em>Na⁺</em> and <em>Cl⁻</em>.
Van der Waals forces, also known as Dispersion forces, are the weakest type of molecular bonds. They are only formed through <u>residual molecular attractions when molecules pass by each other.</u> It doesn't even last long due to the <u>uneven electron dispersion</u>. It can be made <u>stronger by adding more electrons in the molecule</u>. This kind of molecular bonds appear in <em>non-polar molecules</em> such as <em>carbon dioxide</em>.
Answer:
Two sets of chromosomes
One set of chromosomes
Haploid
Diploid
Explanation:
Diploid cell is a cell that contains two complete sets of chromosomes, each coming from both parents. e.g. a human cell, excluding sex cells, contains 46 chromosomes, each parent contributing 23 each
Haploid cells are cells containing one complete set of chromosomes i.e a single set of unpaired chromosomes. e.g gametes or sex cells that contain 23 chromosomes
Plants alternate between a life cycle in which they have one set of chromosome in their cell and two sets of chromosomes in their cell.
The gametophyte is the haploid plant form of an organism which produces the haploid reproductive gametes e.g. sperms and eggs. The gametophyte is developed by the spores, which is produced by the sporophyte. The haploid sperm fertilizes the haploid egg to form a diploid zygote, which gradually develops into the diploid sporophyte.
The sporophyte is a diploid multicellular generation found in plants and algae that produce haploid spores. These haploid spores are produced when the sporophyte organism undergoes meiotic (reduction) division. The spores then undergo mitosis or growth, without changing the number of chromosomes, to become a haploid multicellular gametophyte.
The gametophyte produces gametes and the cycle starts again. This process is referred to as ALTERNATION OF GENERATIONS.