What material is the objective lens made of in UV fluorescence microscopy

Answers

Answer 1

Answer:

quartz

Explanation:


Related Questions

can someone please write one for me or show me different websites to help write one please

Answers

Answer:

One Act Example

Shakespeare, Clearly: Romeo and Juliet (one-act)

by Jon Jory

adapted from William Shakespeare

Drama

One-act. 30-35 minutes

8-30 actors

In Shakespeare's most well-known tragedy, two young star-crossed lovers’ deaths ultimately reconcile their feuding families. This straightforward adaptation mixing contemporary and classical language emphasizes story and character rather than the poetry. Master director and acclaimed playwright Jon Jory has reimagined the classic tale to serve as an early introduction for younger audiences and actors that allows easy involvement. Inventive yet faithful, this adaptation will inspire actors and audiences alike to revisit Shakespeare’s original texts. Gender-neutral casting is encouraged and doubling is possible. Simple stage allows for a fluid and forward moving production.

Procedure:

ONE ACT STRUCTURE

Set the Scene.

Introduce the character goal(s)

Introduce an obstacle to the achievement of the goal(s)

Introduce a disaster (the result of a twist if your story has one)

Let the character(s) react.

Resolve the story.

-Oct 17, 2017

Explanation:

The half-life of potassium-40 is 1.3 billion years. If a rock specimen contained 1g of
potassium-40 when it was formed, how much potassium-40 would be left if the rock is 2.6
billion years old?

Answers

Answer:

2.6 billion years

Explanation:

There are essentially two ways of solving nuclear half-life problems. One way is by applying the half-life formula, which is

A

(

t

)

=

A

0

(

t

)

(

1

2

)

t

t

1

2

, where

A

(

t

)

- the quantity that remains and has not yet decayed after a time t;

A

0

(

t

)

- the initial quantity of the substance that will decay;

t

1

2

- the half-life of the decaying quantity;

In this case, the rock contains

1/4th

of the orignal amount of potassium-40, which means

A

(

t

)

will be equal to

A

0

(

t

)

4

. Plug this into the equation above and you'll get

A

0

(

t

)

4

=

A

0

(

t

)

(

1

2

)

t

t

1

2

, or

1

4

=

(

1

2

)

t

t

1

2

This means that

t

t

1

2

=

2

, since

1

4

=

(

1

2

)

2

.

Therefore,

t

=

2

t

1

2

=

2

1.3 = 2.6 billion years

A quicker way to solve this problem is by recognizing that the initial amount of the substance you have is halved with the passing of each half-life, or

t

1

2

.

This means that you'll get

A

=

A

0

2

after the first 1.3 billion years

A

=

A

0

4

after another 1.3 billion years, or

2

1.3 billion

A

=

A

0

8

after another 1.3 billion years, or

2

(

2

1.3 billion

)

T A C G T G G A C T G A G G A C T C C T C is this a 'sense' strand or 'antisense' strand?

Answers

The information provided is NOT sufficient to indicate if the TACGTGGACTGAGGACTCCTC sequence is a 'sense' strand or 'antisense' strand.

What is a sense DNA strand?

DNA is a double helix molecule composed of two long chains of nucleotides linked by hydrogen bonds.

During transcription, the sense DNA strand is actively used as template to produce a complementary RNA molecule.

In consequence, it is required to know the sequence of the resulting RNA to determine if the sequence above belongs to a 'sense' strand or 'antisense' strand.

Learn more about transcription here:

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Answer:

C

Explanation:

Sperm and eggs are found in different parts of plants. Explain why it is important for these
cells to unite, and describe some factors in an environment that help unite them.

Answers

Explanation:

When sperm and eggs in plants are united they fertilize the egg creating a plant able ready seed. Some factors in an environment that help them unite are; (animals) bees, butterflies, and other insects. wind bringing pollen around

When sperm and egg (found in different parts of plant) unite fertilization takes place which results in the formation of a zygote and later it forms an embryo.

Some factors in an environment that help unite them are air, water, insects, birds, bats etc.

What is sperm?

"Sperm is defined as male reproductive cell. In case of plants, it is known as male gametophyte (pollen)."

What is egg?

"Egg is defined as female reproductive cell. In case of plants, it is known as female gametophyte (ovum)."

What is fertilization?

"Fertilization can be defined as the fusion of the male gametes (pollen) with the female gametes (ovum) to form a diploid zygote."

What is a zygote?

"A zygote is a cell formed by the union of two gametes."

What is embryo?

"A plant embryo is an undeveloped plant inside a seed."

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True or false? All cells share four key components: plasma/cell membrane, ribosomes, DNA, and cytoplasm.

Answer: True

Answers

Answer:

TRUE

Explanation:

Brainliest

The Earth’s rotation is the only thing that impacts wind

Answers

Answer:

false

Explanation:

While the Earth's rotation does play a role, it is a somewhat indirect one. The primary factor that affects the formation of winds is differences in atmospheric pressure. As is true throughout nature, any fluid will try to move from a region of high pressure to a region of low pressure.

Answer:

False

Explanation:

This is false because the earth goes one way but the wind can go all kinds of ways

Which sustainable building practice does the photograph show?
A. Using a green roof to capture carbon and reduce a building's
energy costs
B. Reusing old bottles and cans as insulating building materials
C. Reducing fossil fuel consumption and its associated pollution
D. Replacing wilderness with buildings to reduce the absorption of
carbon dioxide

Answers

Reusing old bottles and cans as insulating building materials is the  sustainable building practice. Therefore, option (C) is correct answer.

Sustainable building practices aim to minimize the environmental impact of construction and operation of buildings while enhancing the health, well-being, and productivity of occupants. These practices involve incorporating environmentally responsible methods and materials into the design, construction, and operation of buildings.

Therefore, reusing old bottles and cans as insulating building materials is the sustainable building practice.

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Amoebae move and engulf food by using pseudopodia, which is Latin for ___ ____
(two words)

Answers

Answer:

false feet

Explanation:

PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)

Which of the following diagrams illustrates the position of t3
he sun an earth on the longest day of the year i in the northern hemisphere

Answers

Answer:

please provide clean image.......

Explanation:

in your desktop ️ I can't able to see anything....

The cellular machinery responsible for protein synthesis is the:.

Answers

The cellular machinery responsible for protein synthesis is the ribosomes.

how would you go about a driver who is driving recklessly on the free way or any road you encounter

Answers

Answer:

Drive from as far away from them as possible. Attempt to speed past them.Or, call the police.

Which of the following attitudes is NOT important in science?
a.
curiosity
c.
creativity
b.
having a closed mind
d.
skepticism


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

creativity

Explanation:

the creativity isn't important in science because in science we need to process methodically

The attitude that is NOT important in science is b. having a closed mind.

What is a closed mind?

A closed mind refers to a person who is not willing to consider different ideas or opinions.

A closed mind cannot engage in scientific inquiries.

Scientific inquiry helps scientists to study the natural world in diverse ways before proposing explanations based on the evidence derived from their scientific activities.

Thus, important attitudes in science include:

CuriosityCreativitySkepticism.HonestyFlexibilityPersistenceOpen-mindednessTolerance of uncertaintyAcceptance of the provisional nature of scientific explanation.

But, having a closed mind cannot help in science.

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What is the difference between B-cell lymphocytes and T-cell lymphocytes?
B cells regulate blood pH, and T cells regulate body temperature.
B cells are produced in the thymus, and T cells are produced in the bone marrow.
B cells engulf bacteria, and T cells carry bacteria to the lymph nodes.
B cells produce antibodies, and T cells destroy infected cells.

Answers

Answer:

B cells and T cells are the white blood cells of the immune system that are responsible for adaptive immune response in an organism. Both the cells are made in the bone marrow.Explanation:

B cells produce antibodies, and T cells destroy infected cells. So, the correct option is D.

What are B cells and T cells?

The two primary categories of lymphocytes are T cells and B cells. Antibody molecules made by B cells can attach to and kill invasive viruses and bacteria. T cells are the immune system's first line of defence against foreign invaders. They also create cytokines, that are biological agents that aid in the activation of other immune system components.

T cells can eliminate malignant or contaminated cells. Moreover, they control overall immune response by assisting B cells in eradicating foreign infections. Antibodies are made by B cells. An antibody is a class of protein produced by B lymphocytes, sometimes known as B cells.

Therefore, the correct option is D.

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Explain the characteristics scientists use when observing organisms and placing them in six kingdoms

Answers

Answer:

Classification of organisms is done while considering many factors such as:

Cell type- whether the organism is prokaryotic or eukaryotic

Cell structure- This includes both the presence and composition of the cell wall

Body type- whether the organism is multicellular or unicellular

Mode of nutrition- the method through which the organism achieves its nutritional requirement, by consuming other organisms (heterotroph) or making its own food (autotroph)

Explanation:

i beleve this is what you where asking :)

Discuss the relationship between Gibbs free energy, redox reactions and cellular respiration in mitochondria.​

Answers

Cellular respiration is a redox process that mainly occurs in mitochondria, whereas Gibbs's free energy refers to the energy in a closed system.

What is cellular respiration?

Cellular respiration refers to the oxide reduction reactions (redox) associated with the production of energy in aerobic cells.

Cellular respiration occurs in the cytoplasm (glycolysis) and mitochondria (Krebs cycle and oxidative phosphorylation).

Finally, in thermodynamics, the Gibbs free energy refers to the energy generated in a closed system.

Learn more about cellular respiration here:

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What are the four features of minerals? (use complete sentences and your own words.)

(NO LINKS PLEASE)

Answers

Answer:

1)All minerals are naturally occuring.

2)They have to have a crystalline structure and a definite chemical composition.

3)They are inorganic.

4)They are a solid.

Explanation:

1-You have to find a mineral in the nature. It cannot be created in a lab.

2-Crystallline structure is the ordered arrangement of ions, molecules, or atoms in an object.

3-Inorganic means that the object has not bonded with carbon.

4-Solid means that it is not fluid and is hard and stable.

Hope this helps! :)

Can someone help me please

Answers

Answer:

What subject is it, and could you please show the formula?

Explanation:

Answer:

I can but umm I don't understand so sorry

Explanation:

I can't read that and don't know what it is about

Who would have first made this statement while observing cork under a microscope?

"The cork looks like little rooms, or cells.”

Hooke
Schleiden
Leeuwenhoek
Virchow

Answers

Answer:

Robert Hooke

Explanian

Hooke observed a thinly sliced piece of cork under a microscope and noticed they looked like the cells that monks would sleep in. That's why cells were given their name!

how Khoi San people know a Hoodia gordinii plant is for hunger and thirst

Answers

Answer:

The Bushmen of the Kalahari desert, also known by the name “khoi-San”, used Hoodia gordonii for thousands of years to ward off hunger and thirst while hunting and looking for food. The active ingredient in hoodia cordonii is called p57, a steroidal glycoside, and it is this ingredient that is thought to suppress appetite.

Play the spectrogram at normal speed and slowed down. How many calls did the bats make?

Answers

Answer:

Bat echolocation calls vary in their dominant frequency approximately between 11 kHz (e.g. Euderma maculatum; Fullard & Dawson 1997) and 212 kHz (Cloeotis percivali; Fenton & Bell 1981). Most insectivorous bats call with dominant frequencies between 20 kHz and 60 kH

A Gram + bacterium that inhibits the growth of other Gram + bacteria is an example of what?

Answers

Answer:

The selenium particles when coated on paper towels were extremely effective and continuously inhibited (about a 90% reduction) the growth of gram-positive bacteria including S. aureus and S. epidermidis after 24, 48, or 72 hours.

What is basal cell carcinoma and what does it look like?.

Answers

Answer:

Basal cell carcinoma is a type of skin cancer that most often develops on areas of skin exposed to the sun, such as the face. On brown and Black skin, basal cell carcinoma often looks like a bump that's brown or glossy black and has a rolled border. Basal cell carcinoma is a type of skin cancer.

Enzymes are a diverse group of biological catalysts.Enzymes act as catalysts , because they?A. Give us immediate quick energy
B.Speed up chemical reactions in our body by lowering energy
C. Increase the amount of energy needed to break down substrates.
D. Can act on any substrate molecule at any time

Answers

Answer:

B

Explanation:

Enzymes in our bodies are catalysts that speed up reactions by lowering the activation energy necessary to transform a reactant into a product.

According to cell theory, which are made of cells? Check all that apply.

kitten
bacteria
cactus
mushroom
rock

Answers

Answer:

Kitten

Cactus

Mushrooms

Bacteria

so all but Rock

Because only living things have cells

If a person with Klinefelter’s syndrome wanted to look more like an average male, what medical treatment could help accomplish this?

Answers

A testosterone replacement

why is it beneficial for scientists to understand how other organisms are able to edit their RNA

Answers

Answer:

Many see RNA editing as an important alternative to DNA editing using techniques such as CRISPR.

Explanation:

It is beneficial for scientists to understand how other organisms are able to edit their RNA because it gives an idea for scientists in order to identify particular causes and symptoms of genetic and environmental disorders among individuals.

What is RNA?

RNA stands for ribonucleic acid. It may be characterized as a type of nucleic acid that is significantly present in all living cells. It expresses some structural and functional similarities to DNA. There are major three types of RNAs found. It includes mRNA, tRNA, and rRNA.

There are various techniques that help scientists to observe numerous RNA and its editing in organisms. It is an important alternative to DNA editing. This methodology of RNA editing and functionality is determined by using techniques such as CRISPR.

Therefore, it is beneficial for scientists to understand how other organisms are able to edit their RNA because it gives an idea for scientists in order to identify particular causes and symptoms of genetic and environmental disorders among individuals.

To learn more about RNA, refer to the link:

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5. What are the outputs of photosynthesis?

glucose and oxygen

water and carbon dioxide

energy and water

carbon dioxide and glucose

Answers

[tex]\huge\mathcal\pink{ANSWER} [/tex]

[tex] \mathsf \purple{glucose \: and \: oxygen}[/tex]

Answer:

Glucose and oxygen

Explanation:

Photosynthesis is a natural food making process that occurs in plants.In the process(in the leaves of plants) carbon dioxide reacts with water containing minerals in the presence of sunlight(which was trapped by the chloroplast) to produce oxygen and glucose.

how does bear respond to danger?

Answers

bears usually retreat before people are aware of them. Their hearing is more sensitive than a human's, and their broad, soft foot pads allow them to move quietly downwind where they can best identify their dangers.

Bears may react defensively by woofing, yawning, salivating, growling, snapping their jaws, and laying their ears back

Critically discuss the scope of medical anthropology as a
transdisciplinary field of Social Science.

Answers

Medical anthropology deals with the study of human health using social approaches and structural model of society health and wellbeing.

What is medical anthropology?

Medical anthropology deals with research on health and society plan or program.

The study uses social approaches and structural model of society health and wellbeing such that culture, people and discipline are captured.

Therefore, Medical anthropology deals with the study of human health using social approaches and structural model of society health and wellbeing.

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Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

A. ash
B. dissolved gases
C. silica content
D. temperature

Answers

The only word among the available words that do not fit the pattern would be temperature.

Words and relationship

Ash, dissolved gases, and silica content are similar in the way that all of them are made up of matter.

Matter refers to any substance with weight and is able to occupy space. Ash is made from solid particles. dissolved gases are gases, and silica contents are also from solids.

Temperature, on the other hand, is a scalar quantity. It is not something that can be held or seen. It has no weight and neither does it occupy space.

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