1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ryzh [129]
4 years ago
9

If element X has 15 protons, how many electrons does it have?

Biology
2 answers:
gtnhenbr [62]4 years ago
8 0
If element X has 15 protons, it would also have 15 electrons.
Liono4ka [1.6K]4 years ago
3 0
If the element has 55 protons it is celcium and it also has 55 electrons. It has an atomic mass of 133 (132.9) so to get the number of neutrons you subtract the atomic mass and the number of protons.
You might be interested in
Which of the following is a disadvantage of genetic engineering?
kvv77 [185]

Answer:

may cause negative side effects

Explanation:

8 0
3 years ago
The light reactions of photosynthesis occur in the __________________. During this reaction, _______________ is split to form en
Neko [114]

Answer:

1. Thylakoid

2. Water

3. Oxygen

4. Glucose

Explanation:

Photosynthesis is a unique process where autotrophs make their own food. It is a metabolic activity that occurs in the Chloroplast. Photosynthesis occurs in two main stages viz: light dependent stage and light-independent stage. The light dependent stage, which occurs in the thylakoid lumen of the CHLOROPLAST. It involves the capturing of light energy from the sun using the Chlorophyll pigment. The Chlorophyll molecule gets excited and the energy derived is used to split water molecule in a process called PHOTOLYSIS OF WATER.

The protons derived from this is used to build a proton pump that will facilitate the synthesis of ATP. A reduced electron carrier (NADPH) is also produced. Oxygen gas is released as a byproduct in this stage.

In the light independent stage, also known as Calvin cycle, the NADPH and ATP produced in the first stage is used to synthesize glucose molecule.

4 0
3 years ago
The frog population in the Amazon basin varied. Every 500 years, there was a mutational change leading to speciation. In between
Sati [7]
<span>The question is providing us with the following scenario:The frog population in the Amazon basin varied. Every 500 years, there was a mutational change leading to speciation. In between, the population remained the same with no observable changes. This pattern of microevolution is called punctuated equilibrium. This pattern is distingushed by long periods of lack of change, followed by a sudden and often extreme change, and followed again by a period of a lack of change. </span>
3 0
3 years ago
Gas exchange involves the transport of two respiratory gases, oxygen and carbon dioxide. Review how each gas is transported betw
pickupchik [31]

Answer:

1)required for cellular respiration(Oxygen only)

2) net diffusion from alveoli to lung capillaries(Oxygen only)

3)sometimes transported as bicarbonate(Carbon Dioxide Only)

4)net diffusion from body tissues to blood(Carbon Dioxide Only)

5)net diffusion from lung capillaries to alveoli(Carbon Dioxide Only)

6)waste product of cellular respiration(Carbon Dioxide Only)

7)enters alveoli during inhalation(Both Oxygen and carbon dioxide)

8)transported by hemoglobin(Both Oxygen and carbon dioxide)

Explanation:

Gas exchange is a mechanism that helps the body to get the necessary Oxygen that is required for cellular respiration to take place

There is diffusion of oxygen to capillaries that are present in the lungs from the alveoli.

Gas exchange is a mechanism that is also responsible for the body to get rid of waste such as carbon dioxide,

5 0
3 years ago
Which of the following is true of microbes?A. Ninety-nine percent of all microbes are pathogenic.B. Gene expression in bacteria
serious [3.7K]
B. Gene expression is in them is similar to us but facilitates the use of bacteria in recombiant biotechnology and gene therapy.
We human have eukaryotic cells which have a devoloped nucleas whereas small bacteria have prokaryotic cells with no definite nucleus using more biotechnology. Other all are not true.
6 0
4 years ago
Read 2 more answers
Other questions:
  • There are two different species in a habitat. Species A has fewer genetic variations. Species B has a considerable amount of gen
    13·2 answers
  • How could air that is saturated with water become oversaturated without adding any water??
    12·2 answers
  • Which continent or continents did the Homo ergaster occupy 1.6 million years ago?
    10·1 answer
  • Which of the scientist gave cells their name while observing cork under a microscope
    13·1 answer
  • Elements and compounds are two types of ______________________.
    13·2 answers
  • 4. What are the main sources of ocean water pollution?
    14·2 answers
  • Large compartments within some eukaryotic cells that capture and store food or toxic materials, maintain turgor pressure, and di
    5·1 answer
  • Which of the change of amino acids correspond to the nucleotide sequence AAU GGC UAC
    10·1 answer
  • Please help me with this
    9·1 answer
  • TRUE or FALSE?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!