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Sveta_85 [38]
3 years ago
14

Classify each statement as an example of adhesion, cohesion, or surface tension. Drag each statement to the appropriate bin. A s

ewing needle floats when it is placed gently on top of water in a bucket. Water molecules ding to plant cell walls. A water strider runs across a pond without breaking the surface. A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface. Water molecules cling to the side of a beaker. Water molecules are attracted to each other.
Biology
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

A sewing needle floats when it is placed gently on top of water in a bucket - surface tension

Water molecules ding to plant cell walls - adhesion

A water strider runs across a pond without breaking the surface - surface tension

A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface - cohesion

Water molecules cling to the side of a beaker - adhesion

Water molecules are attracted to each other - cohesion

Explanation:

The surface tension refers to the tendency of the surface of a liquid to remain unbroken by an external force due to the cohesive property of the molecules of the liquid. Instead of being broken, the surface of the liquid stretches like an elastic membrane.

The adhesive property of a liquid, also known as the force of adhesion, refers to the property of the molecules of the liquid to stick to other molecules while cohesive property or cohesion refers to the property of molecules of liquids to stick to themselves.

Hence,

<u>Surface tension</u>

  • A sewing needle floats when it is placed gently on top of water in a bucket.
  • A water strider runs across a pond without breaking the surface.

<u>Cohesion</u>

  • A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface.
  • Water molecules are attracted to each other.

<u>Adhesion</u>

  • Water molecules ding to plant cell walls
  • Water molecules cling to the side of a beaker
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Select the correct answer from each drop-down menu.
Masteriza [31]

Answer:

The question is incomplete as the options are not stated, here are the options from another website.

options for A, B and C.

respiration,

photosynthesis,

transpiration.

The answers are;

1. Respiration.

2. Photosynthesis.

3. The processes form the carbon cycle.

Explanation:

From number 1. Prices which is respiration, respiration is a process of gas exchange which oxygen is inhaled and carbondioxide is exhaled into the atmosphere.

Photosynthesis uses the carbon to produce food. This is a process where carbondioxide are used by green plants in line with light energy from the sun and water to produce glucose and oxygen.

The processes are carbon cycle because carbon cycle shows how carbon flow from the atmosphere to the biosphere.

5 0
2 years ago
The length of linker DNA segments varies somewhat among organisms. The length of the linker DNA in sea urchin is 110 base pairs.
nasty-shy [4]

Answer:

362 nucleosomes

Explanation:

A nucleosome repeat is made up of the DNA (146 bp) wrapped around the core nucleosome particle and the linker DNA (110 bp as in this situation). We can conclude that, every repeat stands for 256 (146 + 110) base pairs of DNA.

We are given the length of the entire region to be 92,672 bp long,

To determine the number of nucleosomes to organize the region into the 10nm fiber structure

Let,

Number of nucleosomes =

the length of the entire region

------------------- -----

base pairs of DNA.

= 92,672

-------

256

= 362 nucleosomes

Therefore, 362 nucleosomes is needed to structure the region into the 10nm fiber structure.

5 0
3 years ago
Hearing loss that occurs as a function of age is called _____.​
Elena L [17]
Hearing loss that occurs as a function of age is called presbycusis.

In presbycusis, the patient will lose the ability to hear the higher frequency of sound. 
Anosmia is losing the ability to smell. Presbyopia is vision loss that occurs as a function of age.
6 0
3 years ago
How are viruses different from bacteria
Butoxors [25]

I believe the correct answer is that viruses are not cells while bacteria are cells with organelles.

<h2>Explanation:</h2><h3>Viruses</h3>

Viruses can simply be explained as genetic materials enclosed in capsules that protects them from the immune system.

Viruses need a host to survive since they lack a mechanism to replicate in meaning they are obligate intracellular organisms.

Reproduction of viruses is through attaching their DNA or RNA into the machinery of the host that replicates them as part of the normal DNA of the cell.

They are the smallest living organisms and cannot be seen microscopically.

They cannot be infected but rather can infect bacteria

They have a capsid that protects the viral material and also contains the receptors attachments that are able to attach to the specific sites which they are infecting. Some of them have an extra layer of a membrane that is called an envelope that further protects the viruses from their hostile environment

They are treated by antiviral medications that affects their replication on normal cells.

They are pathogenic by destroying the cells they enter after successfully replicating their genetic material.

They can either have DNA or RNA but never both.

<h3>Bacteria</h3>

They are cellular prokaryotes with cell organelles that keeps them functional

They can be obligate intracellular organisms or they can survive outside the cell without any problem depending on the particular species of the bacteria since they have cell organelles that can function.

Bacteria reproduce through a process called binary fission where the cell organelles just double up and the cell pinches into 2 different sections with equal distribution of genetic materials forming 2 different cells.

They can be infected by types of viruses called bacteriophages that use the hosts nucleoid to replicate.

They have a cell membrane and a cell wall which encloses the inner contents of the bacteria and also protects the bacteria from the immune system.

They are treated by antibiotics such as β-lactam antibiotics that destroys their cell wall making it porous and the cell eventually dies.

They do not enter the host for reproduction but rather they kill the host through toxins such as toxin A and toxin B

They do not have a nucleus but have the nucleoid that contains the DNA of the bacterium.

Level: High School

Subject: Biology

Topic: The cell

4 0
3 years ago
Read 2 more answers
During the early days of deciphering the human genome, scientists were surprised to find that the number of genes appeared to be
Alekssandra [29.7K]

Given what we know, we can confirm that the aspect of nucleic acids and transcription that can help explain this discrepancy is that of alternative splicing.

<h3>Alternative Splicing.</h3>
  • This process allowed the cells to use a single gene for the creation of various proteins.
  • This process includes the separation of RNA at splicing sites to create new versions of the mRNA strand.
  • This helps to increase the diversity of mRNA's available and create more proteins.

Therefore, given that alternative splicing allows the cells to create multiple forms of distinct proteins from a single gene, this allowed our organisms to develop the vast number of proteins we use, without the need for a much larger genome.

To learn more about genome visit:

brainly.com/question/20215717?referrer=searchResults

6 0
2 years ago
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