Element A has 15 protons. How many neutrons are there in its isotope with mass number 33?A) 15

B) 18

C) 33

D) 48

Answers

Answer 1
Answer: I think the correct answer from the choices listed above is option B. The mass number of every isotope of an element is equal or constant. It is the number of neutrons that id different with every isotope. For this case, the number of neutrons should be 18 since the number of neutrons and the number of protons should sum up to the mass number.
Answer 2
Answer: The number of neutrons that are present in this isotope with a mass number of 33 would be B. 18.

Related Questions

What do all elements in a column in the periodic table have in common?Their atoms have the same number of valence electrons. Their atoms have the same atomic mass. Their atoms have the same number of protons and electrons. Their atoms have the same number of neutrons.
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How do spermatogenesis and oogenesis differ in terms of the number of gametes they produce?

Answers

In spermatogenesis,from a single spermatogonia 4 haploid sperms are produced after meiosis (100% efficiency).But in case of oogenesis,from a single oocyte only one is transformed into ovum even after meiotic division(25% efficiency)

What is the role of bacterial proteins in DNA cleavage

Answers

There are no options given to choose from and so it has to be answered from knowledge. I hope the answer is correct and comes to your help. The role of the bacterial proteins in DNA cleavage is to describe the sequence of bases present at the sticky ends of the cleaved double strand of DNA.

The work of bacterial proteins in DNA cleavage is to describe the sequence of bases which are present at the sticky ends of the cleaved which has double strand of DNA.

DNA cleavage is termed as the reaction where serves one of the covalent sugar- phosphate linkage which is between nucleotides.

It is being catalyzed, chemically, enzymatically or radiation.

DNA cleavage can be exonucleolytic which means it removes the end nucleotide by splitting it into two parts.

Which best describes the importance of mitosis to living organisms?

Answers

Answer:

The correct answer is - growth and development.

Explanation:

Mitosis is one of the cell division cycles that occurs in the somatic cells. It is characterized by producing the two daughter cells by dividing one parent cell which is an exact copy and the same number of chromosomes.

The major importance of mitosis in the life cycle of an organism is growth and development by producing more cells and rapid in numbers. The cells divide in the mitosis for the major purpose of tissue repair and growth of organisms.

Thus, the correct answer is - growth and development.

Mitosis can help by reproducing that living organism quickly and by multiple times. 

Systole is the ________ phase of the cardiac cycle. A. Contraction
B. Relaxation
C. Monitoring
D. Termination

Answers

B. Relaxation 

Systole is the ________ phase of the cardiac cycle.
NOT:
A. Contraction
C. Monitoring 
D. Termination

Systole occurs between s1 and s2 and after active filling fill 100% of the ventricles (caused by the sequential contraction created from the SA node). The increased pressure in the ventricles will cause the now lower pressured atrium valves to shut causing s1. Then with all valves closed this creates what is called an Isovolumetric contraction. This occurs when the SA node contraction will travel down the AV node which travels down the septum and eventually reaches the purkinje fibers and causes a simultaneous contraction and open the semilunar valves. This entire process occurs during the systolic phase.


An easy mnemonic to remember is diastolic which is the opposite of systolic sounds like it has the word "die" in it. Dying is when we usually relax and Diastole is the relaxation phase of the cardiac cycle. Systole would therefore be the contraction phase.

4. Describe the most likely direction of the prevailing winds across the Big Island of Hawaii.The most likely direction of the prevailing winds across the Big Island of Hawaii is northeast.

Question you guys need to answer: 5) What is the basis for your answer to question 4 above?

Answers

The most likely direction of the prevailing winds across the Big Island of Hawaii is northeast.

Explanation:

The island of Hawaii, like all the other major Hawaiian Islands, is affected by the trade winds. These trade winds bring cool air to the islands from the north, often resulting in precipitation along inland/mountain and windward areas.

All of the Hawaiian Islands have both a windward and a leeward side. In general terms, the windward side is the wet, rainy, and therefore more lush, green, and tropical section. The windward side faces North or East, where it receives the benefit of the cool, trade-wind breeze.

Answer:

The island of Hawaii, like all the other major Hawaiian Islands, is affected by the trade winds. These trade winds bring cool air to the islands from the north, often resulting in precipitation along inland/mountain and windward areas.

Define the following terms: assimilation

Answers

Assimilation is the process of being adjusted or adapted to the culture of another group or nation