Multiple Choice
How many neutrons does a typical magnesium atom have if its atomic number is 12 and its most common isotope has a mass number of 24?
416
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2. Atoms & Elements
Isotopes
Multiple Choice
If the haploid number of sphagnum moss is 19, what is its diploid number?
A
38
B
29
C
19
D
28
Verified step by step guidance1
Understand the concept of haploid and diploid numbers: Haploid refers to the number of chromosomes in a gamete (sex cell), which is half the total number of chromosomes in a somatic cell. Diploid refers to the total number of chromosomes in a somatic cell, which is twice the haploid number.
Identify the given haploid number: In this problem, the haploid number of sphagnum moss is given as 19.
Use the relationship between haploid and diploid numbers: The diploid number is calculated by multiplying the haploid number by 2, as diploid cells contain two sets of chromosomes.
Set up the equation to find the diploid number: \( \text{Diploid number} = 2 \times \text{Haploid number} \).
Substitute the given haploid number into the equation: \( \text{Diploid number} = 2 \times 19 \).
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