Class 12-science
Get insights from 3k questions on Class 12-science, answered by students, alumni, and experts. You may also ask and answer any question you like about Class 12-science
Follow Ask QuestionQuestions
Discussions
Active Users
Followers
New answer posted
5 months agoContributor-Level 9
We know that nucleic acids are biomolecules which is responsible for carrying the genetic information in living organisms. Nucleic acids have various properties, including physical, chemical and biological properties.
Physical Properties
Nucleic acids are macromolecular in nature because they have a high molecular weight. They are water-soluble but insoluble in alcohol. Also, nucleic acids can absorb ultraviolet light at 260 nm because they have nitrogenous bases.
Chemical Properties
- Acidic in nature
- Hydrolysis
- Base pairing
- Negative charging
Biological Properties
- Stores and transfers genetic information
- The genetic code of every organism i
New answer posted
5 months agoBeginner-Level 5
The "ampere" was defined based on the magnetic interaction. The scientific community used the magnetic force between two parallel current-carrying conductors placed at a distance. Below is the definition of 1 ampere, based on this concept.
1 Ampere is the constant current that produces a magnetic force of exactly when two infinitely long, straight, parallel conductors are placed one meter apart in vacuum. |
New answer posted
5 months agoBeginner-Level 5
Covalent and electrovalent bonding are the two major chemical bonding processes. These two bonds are different from each other in multiple aspects. Check the table below to know a concise summary of the differences.
| Particular | Covalent Bond | Ionic Bond |
| Formation | Due to the complete transfer of electrons | Due to the sharing of electron pairs |
| Ion formation | No ions formed | Cations and Anions formed. |
| Nature | Electrostatic attraction between ions | Electrostatic attraction between nuclei and shared electrons |
| Strength | Strong | Less strong |
| Melting/Boiling point | High due to a strong bond | lower due to weaker bond |
| Polarity | Highley Polar | Non-Polar |
New answer posted
5 months agoContributor-Level 9
The major functions of hormones are:
- Regulating Metabolism
- Controlling Growth and Development
- Managing Stress and Energy
- Regulating Sleep and Mood
New answer posted
5 months agoContributor-Level 9
Hormones present in the human body are:
- Thyrotropin-releasing hormone (TRH)
Dopamine (prolactin-inhibiting hormones)
Gonadotropin-releasing hormone (GnRH)
Adrenal Glands
Androgens
Estrogen
Inhibin
Testosterone
Gastrin
Melatonin
New answer posted
5 months agoContributor-Level 9
Below is the list of hormones:
- Cortisol
- Estrogen & Progesterone
- Aldosterone
- Insulin
- Growth Hormone
- Glucagon
- Adrenaline (Epinephrine)
- Thyroxine (T4) and Triiodothyronine (T3)
- Melatonin
New answer posted
5 months agoContributor-Level 9
There are six types of enzymes. Here we have provided all types of enzymes.
1. Ligases
2. Transferases
3. Hydrolases
4. Oxidoreductases
5. Isomerases
6. Lyases
New answer posted
6 months agoNew answer posted
6 months agoBeginner-Level 5
If your 12th-grade result is marked as pass even with a Repeat Theory or compartment in Physics, you are generally eligible for admission to most courses and universities.
New answer posted
6 months agoBeginner-Level 5
Hi Akash, the best course after 12th for PCB students depends on your interest. Top options include MBBS, BDS, BAMS, BHMS, BPT (Physiotherapy), B.Sc Nursing, B.Pharm, and B.Sc in Biotechnology, Microbiology, or Zoology. If you're into research, B.Sc + M.Sc is great. For healthcare jobs, MBBS, BPT, or Nursing are the top choices.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 66k Colleges
- 1.2k Exams
- 686k Reviews
- 1800k Answers