A simple microscope consists of?

A, three lenses
B, two lense
C, one lene
D, four lens​

Answers

Answer 1
A simple microscope consists of 3 or 4 lenses with different magnifications

Related Questions

in your own words, what is the definition for substrate with enzyme.

Answers

Answer:

an enzyme substrate is the material upon which an enzyme acts.

Explanation:

what is the branch of biology that deals which microorganisms?​

Answers

Explanation:

Microbiology is the branch of biology dealing with the study of different aspects of microorganism.

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Fossils usually form in which type of rock?

a. metamorphic
b. igneous
c. sedimentary
d. All of these commonly contain fossils.

Answers

Answer:

Sedimantry

Explanation:

I hope this helps!

Which statement about AMP and energy is true? 1. AMP releases energy as it makes ATP 2.AMP absorbs energy when it breaks bonds 3.AMP releases energy when formed 4.AMP has one phosphate molecule

Answers

Answer:

The correct answer is - 4. AMP has one phosphate molecule.

Explanation:

AMP or adenosine monophosphate is the secondary messenger and major component of ATP (the cellular energy form). As suggested by the name it has only one molecule of phosphate, unlike ADP that has two and ATP where three phosphates are attached to one sugar molecule and nucleobase adenine.

AMP has the least energy in comparison to the ADP and ATP as more energy releases when bonding breaks. It is interconverted to ADP and ATP in metabolic processes.

16 Which temperature and moisture conditions
describe an air mass that originates over the
Atlantic Ocean near the equator?
(1) warm and dry (3) cool and dry
(2) warm and humid (4) cool and bumid

Answers

Answer:

Questions Answer-warm and humid

what is ostia?? pliz help I'll give brainliest​

Answers

Answer:

an opening into a vessel or cavity of the body.

Man-made ozone at Earth's surface, bluish in color, and can cause breathing difficulty is
what form of ozone?

Answers

Answer:

Bad form.

Explanation:

Bad form of ozone causes breathing difficulty due to its availability near the surface of earth and its composition. Ozone is not emitted directly into the air, it is created due to the chemical reactions between oxides of nitrogen and volatile organic compounds. When these pollutants react with each other in the presence of sunlight, ozone is produced which leads to difficulty of breathing as well as damages the vegetation so this ozone is considered as bad ozone.

PLZZ HELP ASAP!!! 15 points!!!

Answers

Answer: B and C

Explanation: The sun always rotates on its axis because the Sun is fluid not solid, it spins faster at its equator (27 days) than at the poles (35 days). The Sun spins in the same direction as the planets orbit around it, which is not surprising as the Sun and the planets condensed from the same rotating disc of gas.

What does sulfur dioxide and hydrogen sulfide form in the atmosphere that is bad

Answers

Answer:

At high temperatures or in the presence of catalysts, sulfur dioxide reacts with hydrogen sulfide to form elemental sulfur and water. This reaction is exploited in the Claus process, an important industrial method to dispose of hydrogen sulfide.

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Energy is produced in the cores of main sequence stars when?

A) lighter elements undergo fusion into heavier elements

B) heavier elements undergo fusion into lighter elements

C) cosmic background radiation is absorbed

D) cosmic background radiation is released

Answers

Answer: A

Explanation:

The fusion between 4 hydrogens (H) nuclei into a helium (He) atom releases the energy in main-sequence stars. In the Sun, it produces by proton-proton chain reactions.

Energy is produced in the cores of main-sequence stars when lighter elements undergo the fusion into heavier elements (Option A)..

The proton-proton (p–p) chain occurs in stars that have a core temperature of less than 15,000,000 Kelvin degrees.

The p--p chain consists of three (3) reactions that convert six (6) protons into a He nucleus with 2 residual protons. This process releases energy.

In conclusion, energy is produced in the cores of main-sequence stars when lighter elements undergo the fusion into heavier elements (Option A).

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A "TT" (tall) plant is crossed with at "tt" (short) plant. What percentage of the offspring will be tall?

Answers

Answer:

100%

Explanation:

My biology teacher taught me the FOIL method. F=first, O=outside, I=inside, and L=last.

TT x tt

The first letter of each parent together would be Tt, T=tall so the plant would be tall, 25%

The outside letter of each parent together would be Tt, T= tall so the plant would be tall, 25%

The inside letters of each parent together would also be Tt, T=tall so the plant would be tall, 25%

The last letter of each parent together would also be Tt, T=tall so the plant would be tall, 25%

Each outcome has a T, and that is dominant so therefore, the plants will always be tall. You could also think about it as a letter has to be passed down to each child and the first plant only has capitals to pass and the second only has lowercase to pass down.

100% of the offspring will be tall.

Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States

Answers

Answer:

Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States is acid rain

Acid rain refers to the precipitation of acidic components from the atmosphere to the Earth's surface. Some of the most common acidic components are sulfuric acid and nitric acid.

The ACID RAIN is the environmental factor that causes the greatest decrease in the number of species of plants and animals living in lakes in the USA.

The negative ecological effects of acid rain are higher in aquatic environments (e.g., streams and lakes) than in terrestrial environments.

In aquatic environments, it has been shown that acid rain decreases biodiversity by changing the pH level of lakes and streams.

Acid rain can directly or indirectly affect different aquatic species (both plants and animals), thereby distorting the food chain and thus altering all trophic levels.

In conclusion, ACID RAIN is the environmental factor that causes the greatest decrease in the number of species of plants and animals living in lakes in the USA.

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Which two systems work together to make and carry white blood cells to a site of injury in the body?

Answers

Answer:

immune system

Explanation:

white blood cells are part of the body's immune system. They help the body fight infection and other diseases. Types of white blood cells are granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes (T cells and B cells).

Please help ASAP!!

What threatens and endangers a bird nest and coming out babies?

Answers

Answer: Other Predators

Explanation:

Answer: Predators, constant human contact etc

Explanation:

 When humans regularly visit a nest it leaves a scent trail for predators to follow, and if the nest has been disturbed/ is being harassed by other bird/predators that may be another reason why.

the role of metal in oraganism​

Answers

Answer:

Sorry if I'm wrong

Explanation:

Metals play very important roles in human life. Their absence may lead to several diseases in human body. Metals have also been exploited to design therapeutically useful drugs against several diseases like cancer, arthritis, ulcer, etc. Metals present in enzymes strongly facilitate their catalytic reaction.

Metals play very important roles in human life. Their absence may lead to several diseases in human body. Metals have also been exploited to design therapeutically useful drugs against several diseases like cancer, arthritis, ulcer, etc. Metals present in enzymes strongly facilitate their catalytic reaction.

The role of essential nutrient metal ions (Mg, Fe, Cu, Zn, Mn and Co) often deficient in our foodstuffs, although vitally essential in the function of the human organism as well as the different reasons for these deficiencies both in foods and in the human body have been studied.

food for the cattle is known as?
Ans fast
I will follow a
you and mark you as brainiest​

Answers

Answer:

Most cattle in the US have a fodder that is composed of at least some forage (grass, legumes, or silage). In fact, most beef cattle are raised on pasture from birth in the spring until autumn (7 to 9 months). For pastured animals, grass is usually the forage that composes the majority of their diet.

Food for the cattle is know as Fodder

What are Gametes cells?

Answers

Answer:

I think Gametes are mature male or female reproductive cells that fuse together resulting in a zygote during sexual fertilization. The key difference between somatic cells and gametes depends on the ploidy of the genome. Somatic cells consist of diploid (2n) genome while gametes consist of a haploid (n) genome.

Hope it help you!:)

Answer: Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. ... In contrast, each egg cell, or ovum, is relatively large and non-motile.

Explanation: Hope this help :D

A forest fire can have which of the following positive effects? A. Provides heat mammals need in colder seasons. B. Increases annual rainfall by forming more clouds C. Clears underbrush to allow new plants to grow. D. Drives away predators that eat smaller animals.​

Answers

C it clears the underbrush I don’t think the other ones are righ

write any four economic activities of temperate climate zone.​

Answers

1. Market Gardening 2. Mixed Farming 3. Sheep Rearing 4.

Answer:

The four economic activities of temperate climate zone are :

1. Market Gardening 2. Mixed Farming 3. Sheep Rearing

A Pro-golfer was seen taking a nap in a golf cart. While sleeping, their foot slipped and that cart began to accelerate across the golf course up to 9 m/s in 3s. What was the cart’s acceleration? Show all your calculations and include units. Be sure to list out your variables, show all your work, and box your final answer as practiced in class.

Answers

Woah what is going on in these comments uhhhhhh

3. One difference between sexual reproduction in plants and animals is that in plants, sex cells​

Answers

Answer:

However, plants are also able to reproduce asexually

Explanation:

Plants can reproduce in two ways which are asexually and sexually but anime can reproduce only one way which is sexually.

At what location on the mountain is the relative himidity probably 100%

Answers

Explanation:

On which side of the mountain and at which elevation is the relative humidity probably 100%? The air temperature on the leeward side of the mountain at 1.5-kilometers level is higher than the temperature at the same elevation on the windward side.

Help pls :,) 50 points!

Answers

Answer:

It will most likely decrease.

Explanation:

Answer:

It will decrease

Explanation:

PLS HELPPP PLSSS I REALLY NEED THIS HELPPPP!!!!!

Answers

Answer:

presence of the placenta (mammals)

Explanation:

Cat and dogs are two species that belong to the group of placental mammals (class Mammalia). Some phenotypic traits that are exclusive of mammal species include, among others, mammary glands, presence of hair or fur, sweat glands, specialized teeth, etc. A phylogenetic tree is a representation of the evolutionary relationships among different groups/taxa. Moreover, cats and dogs represent two different species of placental mammals, which are characterized by the presence of the placenta (an organ that facilitates the exchange of nutrients during gestation). In this case, the remaining two branches in the phylogenetic tree (branches from left to right) separate from more closely related to less closely related taxa that diverged from the same ancestral node.

Help me right now! Write an explanation of the benefits/ harmful uses of Zebra Mussel

Answers

Answer:

Zebra mussels negatively impact ecosystems in many ways. They filter out algae that native species need for food and they attach to--and incapacitate--native mussels. Power plants must also spend millions of dollars removing zebra mussels from clogged water intakes.

Explanation:

3. Which of the following chemical reactions produces the initial food required
for all life on Earth?

Answers

Do you take earth science?

To generate a knockin mouse, a scientist introduces to ES cells a construct with a mutant exon and within an adjacent intron, loxP sites flanking a neomycin resistance gene. What event will occur next?a. Crossing of heterozygous mice to a Cre-expressing strain.b. Homologous recombination between the mutant DNA and the corresponding gene in the mouse genome.c. Recombination between the loxP sites.d. Transplantation of cells into host blastocyst.

Answers

Answer:

b. Homologous recombination between the mutant DNA and the corresponding gene in the mouse genome

Explanation:

The Cre-lox recombination system is a versatile mammalian gene-editing tool used to produce site-specific recombination events in specific cell lines (e.g., embryonic stem or 'ES' cell lines) by facilitating the integration of a circular mol­ecule in genomic DNA. This system makes use of a Cre recombinase enzyme from bacteriophage P1 that has the ability to recombine specific sequences referred to as Lox sequences. By using this system, it is possible to generate knockout mice by crossing a strain of mice expressing Cre recombinase strain with a targeted loxP-flanked (floxed) mouse strain. The generation of a floxed mouse consists of 1-generation of a targeting construct containing homologous sequences with the mouse genome and loxP sites flanking the gene sequence of interest, and 2-homologous recombination of the targeting construct with the endogenous target gene sequence in the mouse genome.

Explain the differences in thermal energy and temperature when an
object changes from a solid to a liquid and from a liquid to a gas. *

Answers

Answer:

solid to liquid is: melting

while liquid to gas: sublimation

Carrier proteins have the ability to change shape and physically move molecules across the cell membrane. True or false

Answers

Answer:

True

Explanation:

Carrier proteins are the proteins which can help move some substance down their concentration gradient and they can do that by changing their shape while transporting substances across cell membranes. They are responsible for active transport of materials into or out of the cells.

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Look at the rock strata to the right. In what type of environment would the oldest
fossil in this diagram have formed?

a. ocean bottom
b. dense rainforest
C. desert
d. volcano

Answers

A. ocean bottom

it’s a sea shell! these r typically found in the ocean
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