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3 years ago

Difference between male and female respiratory system

1 answer:

8 0

Female lungs tend to be smaller and weigh less than those of males and, on average, may contain fewer respiratory bronchioles at birth. The number of alveoli per unit area and alveolar volume do not differ between male and females, but boys have larger lungs than girls. Thus, the total number of alveoli and alveolar surface area are larger for boys than girls of a given age.

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What are the disadvantages of transmission electron microscope?

Arada [10]

A Transmission Electron Microscope is an impressive instrument with a number of advantages such as:

TEMs offer the most powerful magnification, potentially over one million times or more

TEMs have a wide-range of applications and can be utilized in a variety of different scientific, educational and industrial fields

TEMs provide information on element and compound structure

Images are high-quality and detailed

TEMs are able to yield information of surface features, shape, size and structure

They are easy to operate with proper training

Disafvantages:

Some cons of electron microscopes include:

TEMs are large and very expensive

Laborious sample preparation

Potential artifacts from sample preparation

Operation and analysis requires special training

Samples are limited to those that are electron transparent, able to tolerate the vacuum chamber and small enough to fit in the chamber

TEMs require special housing and maintenance

Images are black and white

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3 years ago

Which activity combines the use of conduction and convection to transfer heat?

kaheart [24]

<h2>Answer:</h2>

The boiling of water in the iron pan is the activity in which both conduction and convention are used.

<h3>Explanation:</h3>

Energy is transferred from one part of the matter to other part in three ways:

Conduction
Convection.
Radiation.

Conduction is the movement of heat from the collision of the microscopic particles in the matter.

While convection is the transfer from the movement of fluids from one place to another.

In the water boiling activity, the pan is heated by the flame from taking the energy in the collision of atoms in the pan and the energy is transferred into the whole pan and eater molecules. This is conduction while in pan water movement from the bottom to top of pan is by convection.

4 0

3 years ago

Read 2 more answers

Whats the name for earths water supply

irga5000 [103]

The ocean holds about 97% of the Earth's water. So I'm guessing it's the ocean.

Welcome to Brainly! I hope I helped :)

3 0

3 years ago

Read 2 more answers

I’ll give Branliest answer!

iVinArrow [24]

I am pretty sure the answer is A but i'm not sure

7 0

3 years ago

Histones are essentially identical in sequence/structure in all eukaryotic organisms from yeast to plants to animals. What does

xxTIMURxx [149]

Answer:

It indicates that core histone genes were present in the last common ancestor of yeasts, plants, and animals

Explanation:

Histones are highly basic proteins that can strongly interact with DNA, which is packaged into nucleosomes, the basic structural and functional unit of chromatin. Each nucleosome is composed of approximately 147 base pairs of DNA wrapped around a core of eight histone proteins (two copies of four types of histones H3, H4, H2A, H2B). These core histones are evolutionarily conserved across eukaryotic kingdoms in terms of sequence and structure. Therefore, DNA-packaging into nucleosomes is considered a constraint for the evolution of core histones. Moreover, the presence of conserved core histones in eukaryotic kingdoms (e.g., yeast, plant, and animal kingdoms) is strong evidence that histone-mediated DNA packaging was presumably present in the last common ancestor of eukaryotic genomes.

5 0

3 years ago