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Mice21 [21]
3 years ago
12

What is the definition of Mercury barometer?

Biology
2 answers:
Lubov Fominskaja [6]3 years ago
8 0

Answer:

"a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure."Is the definition according to google:)

Explanation:

In barometer In the mercury barometer, atmospheric pressure balances a column of mercury, the height of which can be precisely measured.I HOPE IT HELPS:)in general it weighs atmospheric pressure and is a barometer:)

g100num [7]3 years ago
7 0
A device that measures atmospheric pressure that’s displayed by the height of a column of mercury.
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PLSSSS 30 POINTSS BRAINLEST
Ivenika [448]

Answer: The attachment listed some cell organelles,although there isn't a specific question on then but am going to be defining each of them and state their functions as well.

1. The Nucleus; The is command centre of the cell, it is made up of nuleolus, chromosomes, nucleoplasm,nuclear envelope and nuclear lamina.

it contains the genetic/hereditary materials that the cell is made up of.

The Nucleus plays a great role in the control of growth and development of the cell.

The nucleus also coordinates some of the the activities of the cell like cell division and protein synthesis.

2. Cytoplasm; The cytoplasm is one of the cell organelles,it is the liquid portion of the cell,it consists of cell contents between the plasma and the cell membrane. The fluid cytoplasmic material is where many cell organelles are found/suspended fluid. Most activities carried out by the cell occurs in the cytoplasm.

3. Endoplasmic Reticulum; The Endoplasmic Reticulum is one of the cell organelles that have the structure of a network of flattened sacs and tubules and play a crucial role in plant and animal cell. Rough endoplasmic reticulum has ribosomes attached to the cytoplasmic side of the membrane and the smooth endoplasmic reticulum lacks attached ribosomes in them thus giving it the smooth appearance.

The Endoplasmic Reticulum functions in the production, processing, and transport of proteins and in and out of the cell and also the production of lipids.

4. Golgi Body; One of the plant organelles that plays a role in the sorting and organizing the proteins produced and processed by the Endoplasmic Reticulum. these proteins are sorted and packed in vessicles to be used by the body.

5. Mitochondria; (a double membrane organelle). It is otherwise known as the powerhouse of the cell,it produce/generate energy in the form of ATP needed for cellular respiration. These energy produced is used for other cellular metabolic activities.

6. Lysosome (Animal) Chloroplast (Plant); Lysosomes are found in most animal cells, they function by digesting good and garbage,they contains acids that aids this function in the stomach of the cell and when the lysosome is diseased or explodes,the cell stops functioning.

The Chloroplast on the other hand is found in the cells of plants and algae,they play a crucial broke in photosynthesis by capturing the energy from the sun and turning the captured energy into usable forms like sugar,glucose and other organic molecules.

7. Cell Membrane; The cell membrane is the cell organelle that forms a boundary between the cell and the sorounding environment.

The cell membrane as well controls the movement of cellular materials in and out of the cell.

8. Nucleolus; The nucleolus is one of the cell organelles where ribosomes are made. The ribosomes are small grain-shaped organelles that make protein and they are found in the surface of rough Endoplasmic Reticulum. Nucleolus are small and round in structure and are found in the nucleus,

9. Vacoule (Plant Cells) Centrioles (Animal Cells); The vacoule is a storage chamber(reservoir) for wanted and unwanted materials in the cell, the vacoule is found within the cytoplasm and it is enclosed by a membrane that typically contains fluid.

The centrioles on the part of the animal cell is a cell organelle that has a structure of a two hollow cylinders,ring of microtubules next to each other(the centrosome).the centrioles are located just outside the nucleus of the cell.

Centrioles function by producing the mitotic spindles for cell division, and also assisting to pull chromosome pairs apart to opposite end of the cell during cell division.

10. Cell Wall; A protective semi permeable rigid outer layer of nonliving material that surrounds the cells of plants and some other organisms.

The cell wall houses the organelles of the plant cell.

The cell wall functions by giving the cell strength and structure,it's semi permeable nature filters and selectively allows certain materials in and out of the cell.

5 0
3 years ago
NEED BIO HELP ASAP 30 POINTS !!!!!!!!!!!!!!!!!!!!!!
alexandr402 [8]

1. Cell starts into mitosis phase of the cell cycle.

2. Helicase begins to break the hydrogen bonds between the nitrogen bases. (The double helix has to be unwound in order to expose the nucleotides)

3. DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. (this allows a new DNA strand to be made on the existing one)

4. Free floating nucleotides pair up with exposed nitrogen bases (this is what really builds the new strand, based around the template strand)

5. Two new molecules of DNA are created

Statements:

Adenine

Cytosine (Car in the Garage, Apple in a Tree is a good trick to know how they pair)

DNA

Replication

Double helix

4 0
3 years ago
(BRAINLIEST QUESTION) Natural selection is an important part of evolution. It is:
ladessa [460]

Answer:

The answer to the first one is B. A mechanism for the evolution of a population to become better adapted to their environment over many generations.

The answer for the second one is C.vestigial

Explanation:

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Are organisms that rely on external fertilization are more likely to produce large numbers of sperm and eggs than those that use
Tamiku [17]
Yes, those that use external fertilization are more likely to produce large numbers of sperm and eggs.
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Which is the safest area for towing a skier? near the shoreline where others can watch near other skiers or swimmers in the wate
Elan Coil [88]
The answer would be in the middle of the lake away from other skiers or swimmers in the water. 

Given the choices that would be the best answer because it is the safest. When towing a skier, you need to be at a safe distance from hazards like the shoreline, swimmers, boats, and skiers. It is advisable that you distance yourselves at least twice the length of the rope you will use for towing. 
7 0
3 years ago
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