What type of microscope can detect density differences and thereby see organelles in living cells

Answers

Answer 1

Answer:

fluorescent microscope

Explanation:

fluorescent microscope. phase-contrast microscope


Related Questions

What are fungus like protists

Answers

Answer:

Fungus-like protists are protists that absorb their food from dead organic matter. They are grouped into 2 groups, slime molds and water molds.

Use the Lotka-Volterra competition model to determine whether the two species of Paramecium will coexist or drive each other to extinction in the scenario below. In these examples, N1 = N2, and K1 = K2 = 50.

Scenario 1: Determine the outcome of the competitive interaction between P. caudatum and P. aurelia if K1 = K2 = 50, α = 0.3, and β = 0.6.
Scenario 2: Determine the outcome of the competitive interaction between P. caudatum and P. aurelia if K1 = K2 = 50, α = 1.5, and β = 0.6.
Scenario 3: Determine the outcome of the competitive interaction between P. caudatum and P. aurelia if K1 = K2 = 50, α = 0.9, and β = 1.2.

Answers

Answer:they drive each other to extinction

Explanation:

1. Suppose you want to design and build a house. How would you communicate your design plans with the construction crew that would work on the house?
2. Cells build large, complicated molecules, such as proteins. What do you think cells use as their "design plans" for proteins?

Answers

Answer:

The correct answer is -

1. blueprints.

2. cells use DNA as their design plans

Explanation:

Blueprint is a representative drawing of an engineering plan that helps in understanding how and where the desired to construct on the house. It helps in communicating what work should be done in the house. It helps in visualizing how the end product should be.

In cells, the design plan is DNA that encodes all the information in a specific nitrogenous base sequence in order to produce specific functions and produce all the proteins

Which clastic sedimentary rock is made of the smallest grains?

1) Conglomerate
2) sandstone
3) siltstone
4) shale

Answers

Answer:

Shale

Shale has the smallest grain size. Shale is made mostly of clay-sized particles and hardened mud.

Explanation:

thank me later

A red blood cell leaving the left ventricle of the heart would take which pathway to reach the facial artery?

Answers

Answer:

Red blood cell arrives from the inferior vena cava into right atrium before it passes through the tricuspid valve into right ventricle. It then passes through the pulmonary valve into pulmonary artery before travelling through the lungs and back into the heart, this time the left atrium via the pulmonary vein.

Explanation:

hope this helps

The pathway of a red blood cell that leaves the left ventricle of the heart to reach the facial artery would be: Arch of Aorta > Brachiocephalic Trunk > Right Common Carotid Artery > Right External Carotid Artery > Right Facial Artery

The arch of the aorta can be considered as the peak of the ascending aorta.

The brachiocephalic trunk refers to the second branch to arise from the aorta.

The right common carotid artery arises as a branch of the brachiocephalic trunk of the aortic arch.

The facial artery is a branch of the external carotid artery that supplies blood to the muscles and skin of the face.

In conclusion, the pathway of a red blood cell that leaves the left ventricle of the heart to reach the facial artery would be: Arch of Aorta > Brachiocephalic Trunk > Right Common Carotid Artery > Right External Carotid Artery > Right Facial Artery.

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The process of photosynthesis ultimately converts light energy into -

Answers

Glucose is the answer.

True or false: the body is made up of only four systems that all work together.

Answers

Answer:

false

Explanation:

There are ten major organ systems in the body, each of which plays a different role in helping the body work.

Explain what happens to an animal cell when it is removed from the organism and placed into concentrated sucrose solution

Answers

They shrink and pull away from the cell wall. The cell becomes flaccid . It is becoming plasmolysed . In a very concentrated solution, the cell undergoes full plasmolysis as the cells lose more water.

In which layer of the atmosphere did the Concorde cruise?

Answers

Answer:

The Concorde aircraft cruised at Mach 2 at about 19,000 m (62,000 ft), and the SR-71 cruised at Mach 3 at 26,000 m (85,000 ft), all within the stratosphere.

Explanation:

Your Welcome:)

How much of the world's population is infected with the tuberculosis bacterium?
A. 1/10
B. 1/3
C. 1/2
D. 1/5
E. 1/20

Answers

Answer:

23% im pretty sure that is the answer if i remember right

The diagram below shows an energy pyramid for various trophic levels in an ecosystem. According to this pyramid, which trophic level has the LEAST amount of energy?
1. A
2.B
3.C
4.D​

Answers

Answer:

A

Explanation:

I kneed you know what the answer is

Answers

Pretty sure its Phagocytosis

Which group of elements on the periodic table forms covalent compounds with other nonmetals
Group 1

Group 2

Group 17

Group 18

Answers

grp 17

Explanation:

this should be the new periodic table:) grp 1 and 2 belongs to metal. grp 18 belongs to halogen which have full valence electron thus they are inert/ unreactive. thus the ans is grp 17. grp 17 are halogens which are non metals.

How do vaccines help the immune system fight against pathogens , like viruses and bacteria ?

Answers

Answer:

It introduces the body to a virus strand(s) to initiate internal resistance, which is created after a variety of metabolical processes. The idea is that the body would develop immunity to the virus without actually "getting" the virus.

Explanation:

Answer:

When we are exposed to antigens the body sends an immune response to prevent any infection or disease. Vaccines contain the same parts of antigens that can cause diseases, though they are weakened so that they don't actually cause disease, then they trigger the immune system to produce antibodies, which then help to fight against pathogens.

Explanation:

What is natural selection and how does it drive the evolution of a virus?

Answers

Viruses undergo evolution and natural selection, just like cell-based life, and most of them evolve rapidly. When two viruses infect a cell at the same time, they may swap genetic material to make new, mixed viruses with unique properties. For example, flu strains can arise this way.

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

Answers

Answer:

proteins and codons

Explanation:

Tiny structures inside of cells such as ribosomes or chloroplasts that have specialized roles are called

Answers

Answer:

Organelles

Explanation:

These structures are found in the cytoplasm of eukaryotic cells and are enclosed with a membrane.

difference between enzyme and inorganic catalysts​

Answers

Answer:

Enzymes catalyze a reaction which in presence of a catalyst proceeds the reaction faster. Inorganic catalysts promote a chemical reaction between many different reactants. Enzymes are proteinaceous in nature whereas inorganic catalysts are not proteinaceous in nature.

Explanation:

Which two organisms in the chart below are most similar in genetic composition?

A and B
A and D
B and C
C and D

Answers

A and d. Pretty sure
A and D are the most similar in genetic composition

what is it called when a seismic wave bends as it passed from liquid to solid

Answers

Answer:

Refraction

Explanation:

The bending of seismic waves is called refraction. The fact that S-waves do not travel through the outer core suggests that the latter is liquid.

Which of these is the beat example of a positive feedback loop in earth’s climate system

Answers

Answer:  B.  as climate warms, CO2 increases because plants remove less of it

Explanation:

what level of biological organization is illustrated by the image? click the correct box​

Answers

Answer: Ecosystem

Explanation: This image shows multiple species interacting with their environment: human and rabbit within waterfall and tree.

The level of biological organization that is illustrated by the image is called Ecosystem.

An ecosystem is defined as a self supportiung unit that is made up of a living part (biotic factors) like plants and animals; and non-living part (abiotic factors) like water, soil, air.

In an ecosystem, the biotic community includes population of:

Food producers: That is the autotrophs like the green plants which are seen in the attached diagram.

Food consumers : That is the heterotrophs such as animals and human beings.

The non-living part of an ecosystem is its abiotic component. this consist of:

Abiotic resources: These are what organisms need to stay alive. they include a source of energy (sunlight as seen in the diagram) and inorganic nutrients ( carbon dioxide, water).

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Please Fill in the blanks (plato)

Immune responses can be either innate (nonspecific) or adaptive (specific). Suppose a person comes into contact with bacteria that cause a disease that the person has experienced previously. The production of antibodies to fight off the infection is considered an _____ response, while the development of a fever to inhibit bacterial growth is considered an _____ response. (the possible answers to the blanks are "Adaptive" and "Innate")

Answers

Answer:

adaptive; innate

Explanation:

The adaptive immune system refers to a specific type of immunity which is found only in vertebrates. Adaptive immunity is defined by the presence of specialized immune cells (i.e., lymphocytes such as T and B cells). The B cells produce molecules known as antibodies which destroy specific pathogenic microorganisms (e.g., bacteria, viruses) and thus prevent diseases in the future. On the other hand, the innate immune system is the first (and evolutionary more ancient) defense line against pathogenic infections or tissue injury. Innate immunity includes, among others, physical barriers, anatomical barriers, phagocytic enzymes (i.e., lysozymes), phagocytic cells (i.e., macrophages), inflammation, etc. Inflammation is defined as an innate immune response composed of complex biological processes that protect the body by eliminating harmful microorganisms and intracellular danger signals, thereby regulating signaling pathways of many diseases.

WILL GIVE BRAINLIST TO CORRECT ANSWER
Two of the three points of the cell theory are listed below.
• All new cells come from preexisting ones.
• Cells are the basic units of life.
Which of the following is the third point of the cell theory?
O A. All living cells are surrounded by a rigid cell wall.
O B. All living things have many cells.
O C. All living cells have a nucleus.
D. All living things are made of at least one cell.

Answers

Answer:

All living things have a nucleus.

Explanation:

Answer:

All living things have a nucleus.

Explanation:

Ape-x

How is serving size important to good nutrition and health

Answers

Answer:

it depends on the amount of each nutrition to make a balance meal

Serving size is the first piece of information listed on the label. This is the amount of food that is typically eaten at one time. The size is in a basic household measurement, such as pieces, cups, or ounces. For example, a serving may be 7 potato chips or 1 cup of cereal.

Bio 111 Unit 1 Extra Credit
Crossword

Answers

This is what I see here,.

witch element are involved in creating genetic matirials

Answers

Answer:

Carbon, Oxygen, hydrogen , Nitrogen , and phosphorus.

Why is the action of phagocytes considered a nonspecific response?
It does not occur at any specific temperature.
It is not involved with the production of any specific type of lymphocyte.
It does not respond to any specific type of hormone.
It is not a response to a specific type of pathogen.
I haven't seen any answers here that are correct so I'm sharing this information :)

Answers

Answer:

The answer is "Option D".

Explanation:

The action of phagocytes is deemed a quasi answer because it reacts with any particularity on any harmful substance. It is a mechanism where a cell uses its cell membranes to collect any molecules. Macrophages provide the first layer of defense of our system, a non-specific defense mechanism. Your immune response must handle multiple forms of foreign particles, germs, viruses, or harmful proteins. This failure to respond renders the overall response quicker than that of the specific response.

Answer:

It is D. It is not a response to a specific type of pathogen.

Explanation

Why do scientists consider vestigial structures as an evidence for evolution

Answers

Answer:

it so diffcult pls another

Here can you help me on this?

Answers

Answer:

Selective breeding

Selective breeding is when u choose 2 organisms with certain desirable characteristics and bread then together

Animals are selectively bread 4 many reasons

- To have a higher yield (meat, milk, eggs)

- Be able to run faster

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