A mordant that is applied after the primary stain to bond chemically the alkaline dye to the bacterial cell wall is

Answers

Answer 1

Answer:

A mordant that is applied after the primary stain to chemically bond the alkaline dye to the bacterial cell wall is: safranin.

Explanation:


Related Questions

The following list of events happens during meiosis:

Prophase I: Crossing over between homologous chromosomes occurs.
Metaphase I: Tetrads line up at the metaphase plate.
Anaphase I: Tetrads are separated.
Telophase I: Nuclear envelopes reform around the separated chromosomes.
Prophase II: Chromosomes condense.
Metaphase II: Chromosomes line up at metaphase plate.
Anaphase II: Sister chromatids separate into daughter chromosomes.
Telophase II: Nuclear envelopes reform around the daughter chromosomes.
Identify the answer choice that correctly lists the events from above that lead to new genetic combinations in the gametes.

(1 point)

1 and 2

1, 2, and 5

5 and 6

5, 6, and 7

Answers

Meiosis is a form of cell division that occurs in the sex chromosomes. This form of division ensures genetic diversity and also allow for the chromosome set to be halved.

The events from above that lead to new genetic combinations in the gametes include:

Prophase I: Crossing over between homologous chromosomes occurs.

Metaphase I: Tetrads line up at the metaphase plate

(1 and 2) option a.

During meiosis, possibilities of new genetic combinations occurs which allows for variations to exist between the offspring and parents. These ensures that offspring are not entirely identical to the parents and also allow for survival and other benefits.

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5 A prokaryotic cell is 5.0 um in length. A virus particle is 300 nm in length. How many times larger is the prokaryotic cell compared to the virus particle?
A 2
B 17
C 60
D 167​

Answers

The prokaryotic cell is 17 times larger as compared to the virus particle.

Both values first need to be converted to the same unit.

5.0 um = 5.0 x [tex]10^-^6[/tex] m

300 nm = 3.0 x [tex]10^-^7[/tex] m

Dividing both values:

   5.0 x [tex]10^-^6[/tex] m/3.0 x [tex]10^-^7[/tex] m

                        = 16.667

Hence, the prokaryotic cell is approximately 17 times bigger than the virus particle.

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Why would you use sodium hydrogen carbonate in an investigation

Answers

Answer:

Investigating photosynthesis. The effect of light intensity on photosynthesis can be investigated in water plants. ... Sodium hydrogen carbonate - formula NaHCO 3 - is added to the water to supply carbon dioxide - a reactant in photosynthesis - to the plant.

Explanation:

hope this helps

the two organs that play an important role in maintaining acid-base balance are the

Answers

Answer:

the lungs and kidneys.

Explanation:

What are villi?



don't spam​

Answers

Answer:

Villi are finger-like outgrowths on the inner walls of the small intestine. The villi increase the surface area for absorption of the digested food.

Answer:

Villi are tiny finger-like projections seen in the small intestine. They are more than millions of villi in the small intestine performing the following functions: The villi absorb nutrients from the food and cause their conversion into glucose.

1. Transcription happens in the _______ and translation happens at the _________.
a. mitochondria, chloroplasts
b. chloroplasts, mitochondria
c. nucleus, ribosome
d. ribosome, nucleus

2. Proteins are long chains of _________ assembled by _____ bringing them to the ribosomes.
a. nucleotides, mRNA
b. mRNA, nucleotides
c. amino acids, tRNA
d. tRNA, amino acids

3. What are three amino bases on the mRNA strand that codes for a specific amino acid is? What is the complementary bases on a tRNA molecule called?
a. Genetic code, DNA
b. DNA, RNA
c. Codon, anticodon
d. bird, dog

Answers

Answer:

1. C

2. C

3. C

Explanation:

Hope this helps.

What percentage of the earth’s land and what percentage of the earth’s oceans have been disturbed by human activities?

Answers

Answer:

the first 1 :)

Explanation:

A mother has type O blood and a father is heterozygous for type B blood. What are the chances of the offspring having type O blood?

Answers

Answer:

50 percent

Explanation:

O is a recessive trait. The father has a B and an O, using a punnet square you are able to determine that the possible outcomes are BO, BO, OO, and OO

What explains a child's growth over time?

New atoms and molecules are added to the body through cellular respiration.

New cells with identical DNA are created through cell division.

Answers

Answer:

New cells with identical DNA are created through cell division.

Explanation:

Describe how the Earth’s surface changed over time?

Answers

Answer:

Earth's surface is constantly changing. Wind, water, and ice break down large rocks and move sediments on the surface. It usually takes years for weathering, erosion, and deposition to cause noticeable changes. Some events, though, change Earth's surface much more quickly.There are basically 2 types of changes that occur to the earth's surface (i) Slow change and (ii) fast change. Fast changes occur through the actions of earthquakes, volcanoes, landslides, etc. while slow change takes time and has a process.

Explanation:

Our home planet Earth is a rocky, terrestrial planet. It has a solid and active surface with mountains, valleys, canyons, plains and so much more. Earth is special because it is an ocean planet. Water covers 70% of Earth's surface. When it comes to changes on the Earth's surface, the main processes to take into account are plate tectonics and the rock cycle as well as the sea-floor spreading. ... These collisions causes mountains and volcanoes to form on the plate boundaries and thus changes the shape and form of the landmass

a cockroach is a fast-moving insect. how can an animal with an open circulatory system be so speedy?

Answers

Cockroaches have 6 legs and each leg has 3 knees, 18 knees in total. Since the cockroach has so many joints in its legs its can accurately pick up speed when running away from something

An animal like a cockroach with an open circulatory system is so speedy because in these organisms tracheal system delivers oxygen throughout the body.

What is an Open circulatory system?

An open circulatory system may be characterized as a type of circulatory system in which blood vessels are completely absent and blood generally flows freely through the cavities of the body. This type of circulatory system is present in arthropods.

Due to the absence of blood vessels, the flow of blood is extremely high in animals that have an open circulatory system. Apart from this, in cockroaches, oxygen is carried out through the tracheal system because of the absence of the lungs. So, it makes the process so speedy.

Therefore, an animal like a cockroach with an open circulatory system is so speedy because in these organisms tracheal system delivers oxygen throughout the body.

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Which part of the vascular system functions as a blood reservoir and contains over 60% of the body's blood

Answers

Answer:

Veins are also called capacitance vessels because they contain 60% of the body's blood volume.

Explanation:

Hope I could help.

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Helpppoo please no filessss

Answers

Answer:

i can’t see the answer choices

Explanation:

wha molecules absorbs sunlight for photosynthesis

Answers

Explanation:

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

The anterior rami of spinal nerves ______ are called intercostal nerves because they travel in the intercostal space sandwiched between ______.

Answers

Answer: T1-T11; two adjacent ribs

Explanation:

The anterior rami of spinal nerves T₁ - T₁₁ are called intercostal nerves because they travel in the intercostal space sandwiched between two adjacent ribs.

What are the rami of spinal nerves?A typical spinal nerve typically branches out into rami as soon as it exits the intervertebral foramen.The smallest of the two main branches is the posterior (dorsal) ramus. It innervates the skin of the back as well as the deep muscles of the back, such as the transversospinalis and erector spinae. The bigger of the two main branches is the anterior (ventral) ramus. The anterior ramus divides into numerous additional branches that innervate the upper limbs, lower limbs, and anterior and lateral regions of the trunk. Numerous anterior rami develop into nerve plexuses.

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The basic pattern of blood flow from the lungs to the rest of the body is:
pulmonary vein; left ventricle; left atrium; vena cava.
O pulmonary artery; left atrium; left ventricle; aorta.
O vena cava; aorta; right ventricle; right atrium.
O pulmonary vein; left atrium; left ventricle; aorta.

Answers

Answer: pulmonary vein; left atrium; left ventricle; aorta

Explanation: I just did this question in the final exam of A&P and it was correct, hope this helps:)

The basic pattern of blood flow from the lungs to the rest of the body is: pulmonary vein; left atrium; left ventricle; aorta. The option (B) is correct.

What are pulmonary vessels?

Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart. Your pulmonary veins are part of your body's pulmonary circuit. This is a system of blood vessels that moves blood between your heart and your lungs. This circuit also includes your pulmonary arteries.

For the exchange of gases to occur effectively, the lungs require a dual vascular supply known as pulmonary and systemic circulations. The pulmonary circulation is responsible for bringing deoxygenated blood from the body to the lungs for gaseous exchange and then returning oxygenated blood to the heart.

There are 4 total pulmonary veins—with 2 pulmonary veins coming from each lung, left and right—that empty into the left atrium of the heart.

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low does natural selection lead to the evolution of a population?

Answers

Explanation:

when natural selection is cartried out it leads to the species being the fittest inorder words it is called survival of the fittest inorder to promote evolution

which is not involved with an inflammatory Response
A. Fever - increased temperature
B. Slowed blood flow
C. White blood cells move to the area of infected
D. inflammation in area

Answers

Slowed blood flow is not an inflammatory response.
Reasoning: a fever is caused by the body trying to kill off any unwanted pathogens with the heat. This is an inflammatory response to the body being infected.
White blood cells move to the infected area in an attempt to kill any pathogens. Since white blood cells are mainly meant to help kill pathogens, it is an inflammatory response to send white blood cells to kill the pathogen.
Lastly, inflammation is caused by the body trying to rid the infected area of the pathogens. Similar to the name “inflammatory”, the body will often cause inflammation in an attempt to get rid of any unwanted pathogens in the body.

This is an inflammatory reaction to an infection in the body. Option D is correct.

What is the inflammatory response?

When tissues are harmed by toxins, germs, trauma, heat, or any other cause, the inflammatory response (inflammation) ensues. A fever is induced by the body's attempt to destroy any infections with heat.

Histamine, bradykinin, and prostaglandins are among the substances released by injured cells. Because of these substances, blood vessels leak fluid into the tissues, producing swelling.

White blood cells migrate to the affected location to destroy any germs. Because white blood cells are primarily intended to aid in the killing of infections, sending white blood cells to destroy the pathogen is an inflammatory reaction.

Finally, inflammation results from the body's attempt to cleanse the contaminated region of microorganisms. Similar to the label “inflammatory,” the body will frequently create inflammation in an attempt to cleanse the body of any undesirable infections.

Therefore, option D is correct.

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Ribosomes are the site where— are produced.
Amino acids are coded for by triplet bases in RNA called—.

Answers

Answer:

Ribosomes are the site where proteins are produced. Amino acids are coded for by triplet bases in RNA called codons

Explanation:

100!!! Points
Part A
Tectonic plate movement is the reason why northern California has a very different landscape than southern California. Two different tectonic plates, each moving in different directions, border the western side of the North American Plate. Use the map to identify the two tectonic plates that border the North American Plate to the west.

map of the world's major and minor tectonic plates


Part B
On the map, take a close look at the boundary along southern California and Mexico’s Baja California Peninsula. The arrows on the map show the direction and speed of the plates along this boundary in millimeters per year. Based on the speed and direction of the arrows, identify the type of plate boundary at this location. Which landforms or events are likely to occur there as a result? (Hint: It may be helpful to model the motion of the plates using your hands or pieces of paper.)

a map of North America with the fault lines marked

Answers

Answer:

Where's the map?

Explanation:

Is there something missing? I don’t fully understand m

what are processes of the water cycle that return water to the atmosphere

Answers

Answer:

Evaporation and transpiration change liquid water into vapor, which ascends into the atmosphere due to rising air currents.

rele existente entre o modo verta do como Loonie na propaganda o trecho que revela a tras de cor Por que algumas partes do dos foram grafadas com as palavra do circunstancia OS orgbos tonponsáveis pela publicação anuncio publicat 10 Qual o tipo discursivo predominante do texto?​

Answers

Answer:

what??speak English please

Explanation:

i don't really understand

I'm sorry I'm really sorry plss

forgive me

Which genetic disorder is this karyotype for?


cystic fibrosis


Down syndrome


sickle cell anemia


hemophilia

Answers

It is used for Down syndrome.

define active transport in your own words

Answers

Answer: Define Active transport

Explanation: The moving of molecules or ions across the cell membrane.

Hope this helps!

What is the process called when cells break off of an original tumor and create new cancer sites?
OOOO
benign
malignant
metastasis
biopsy

Answers

Answer:

metastasis is your answer fits the description of host sitr to new site

Toll-like receptors are eukaryotic membrane proteins that bind with bacterial surface molecules and: ____________

a. cause the cell to phagocytize the bacteria.
b. activate the complement cascade.
c. cause the release of antibiotics to kill the bacteria.
d. form channels through which bacterial proteins can enter the eukaryotic cell.
e. cause the release of cytokines that trigger host defenses against the bacteria.

Answers

Answer:

release cytokines that trigger host defenses against the bacteria

Explanation:

Which butterfly-shaped portion of the brain is responsible for spinal reflexes?

Answers

Answer:

b. Gray matter

Explanation: is correct

where does sperm production occur within the testis?

Answers

Answer:

seminiferous tubules

Explanation:

Sperm production happens in coiled structures known as seminiferous tubules.

What is the role of chromosomes in the cell nucleus?
Explain in 5 - 10 sentences

Answers

Answer:

Chromosomes are tightly packed DNA and proteins. The DNA and proteins take on a tightly coiled structure within the chromosome. The chromosomes are then kept inside the nucleus. Their role is to carry basic genetic material. This provides the cell with genetic information that's used to carry out different cellular functions. These functions include survival, growth, and the ability to reproduce.

(vii) All the activities of a cell is controlled by?​

Answers

Answer:

nucleus

Explanation:

The nucleus controls all of the cell's activities, such as growth and metabolism, using the DNA's genetic information. Within the nucleus is a smaller structure called the nucleolus, which houses the RNA (ribonucleic acid).

https://www.britannica.com › list › 6...

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