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
Varvara68 [4.7K]
3 years ago
9

Why is mecury used in thermometers​

Biology
1 answer:
galben [10]3 years ago
5 0

Mercury is the only one in liquid state at room temperature.It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.

You might be interested in
What structure of the sarcomere shortens during muscle contraction?
LiRa [457]

Answer:

The Z lines and H- zone shortens during the muscle contraction.

Explanation:

Sarcomere is the area between the two Z lines. The Z- lines are present in the centre of I - band and H - zone is present in the A - band. The actin filaments which are thin filaments present in I- band and contracts, slide over the myosin filament during contraction.

The I - band, H- zones are became shortens as they are thin than the A- band. It is anisotropic band having thick myosin filaments. They are not flexible and remain in its constant shape during the muscle contraction.

After the muscle contraction, the A- band and the H- zone comes to their original shape. In other words, the sarcomere shortens and comes back during muscle contraction, and relaxation.

3 0
3 years ago
1. a molecule that serves to make reactions work vesicles 2. tiny sacs in the cell that may contain starch enzyme 3. packets wit
slamgirl [31]
1. Enzyme is the molecule that serves to make reactions work. Enzymes are biochemical catalysts that catalyses chemical reactions in a cell by acting on substrates and convert them to products. Their rate of action increases with increase in substrate concentration, reaching optimum when all active sites of the enzyme are engaged.

2. Plastid are the tiny sacs in the cell that may contain starch. Plastid are major cell organelles found in the cells of plants and algae. Plastids are site for the manufacture and storage of important  chemical compounds used by the cell. They often contain pigments used in photosynthesis, and the types of pigments present can change or determine cells color.

3. Lysosome are packets within the cell that contain digestive enzymes. Lysosomes are one of many organelles found in animal cells. they are tiny like sacs filled with enzymes that enables the cell to process nutrients. They contain digestive enzymes which helps in the digestion of worn out organelles, food particles and engulfed viruses or bacteria.

4. Mitochondrion is a structure within a cell that is responsible for production of energy. Energy in a cell is produced through a process of cellular respiration which involves use of nutrients with oxygen gas to yield energy inform of ATP, water and carbon dioxide. The process takes place in the mitochondrion where oxygen acts as proton acceptor in the electron transport chain coupled by production of energy.

5. An Organelle is a small structure that serves specialized functions. A cell is made up of various organelles that help it perform its functions. Each organelle is specialized to perform as specific function different from other organelles, for example ribosomes is an organelle involved in the manufacture of proteins.

6. Golgi apparatus are group of flattened sacs that package and export materials out of the cell. Golgi apparatus also called golgi complex or golgi body, is a membrane bound organelle in eukaryotic cells that is made up by a series of flattened, stacked pouches called cisternae. They are responsible for transporting, modifying, and packaging proteins and lipids into vesicles.

7. Vesicles are tiny sacs connected to the Endoplasmic reticulum and Golgi apparatus. Vesicles are small structures within a cell, or extracellular, consisting of fluid enclosed by a lipid bi-layer. they form naturally during the process of secretion (exocytosis), uptake (endocytosis) and transport of materials within the cytoplasm.
5 0
3 years ago
Read 2 more answers
Where do elctrons get their energy in photosytem I
Afina-wow [57]

Answer:

When light energy is absorbed by a chlorophyll molecule its electrons gain energy and move to higher energy levels in the molecule

5 0
3 years ago
What is climate?<br> How does climate change affect ecosystems?
Stells [14]

Answer:

climate is weather and it affects ecosystem development

3 0
3 years ago
Which of the following is an example of natural selection?
xxMikexx [17]
I would say D because it involves more selection but if that one is wrong it is most likely B. But I would go with D
4 0
3 years ago
Other questions:
  • Which of the following statements is not a similarity between a habitat and an ecosystem?
    11·1 answer
  • The Tasmanian devil has 14 chromosomes in each of its somatic cells, 2n = 14. How many chromosomes would be present in a cell af
    13·1 answer
  • What is the single biggest challenge for living organisms in caves
    14·1 answer
  • The introduction of livestock to an area leads to over-grazing that removes native grasse
    14·2 answers
  • Which best describes the interaction between dna and rna during protein synthesis? a rna carries the code to the nucleus where d
    5·1 answer
  • Can someone please give me an idea for a 5-page biology paper with a subject that I can experiment.
    14·1 answer
  • I need help does anybody knows the answer
    14·1 answer
  • When food enters the digestive system, it -
    14·2 answers
  • What would it take for humans to not only survive in the desert but to thrive in the desert and adapt to the environment?
    9·1 answer
  • The image below shows plant cells.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!