1. The first person to observe cells was?

Answers

Answer 1

Answer:

robert hooke

Explanation:

Answer 2
The answer is Robert Hooke.

Related Questions

What is the impact of life skill to you? A. To be able to create problems B. To be self assertive. C. To be influenced by friends D. To maximize risk in life situation.​

Answers

Answer:

To self assertive

Explanation:

Gives you confidence and advance on you're own personality and views.

how does homeostasis gets affected by coronavirus

Answers

I have included my answer in the comments of your question for Brainly denied it.

A certain stem cell produces only muscle cells. What kind of stem cell is this?
A. Pluripotent
B. Unipotent
C. Totipotent
D. Multipotent

Answers

the answer is (B. Unipotent)

Answer:

B) unipotent

Explanation:

Unipotent stem cells come from multipotent stem cells which can only become a few different cell types. Unipotent stem cells can be programmed to be only a specific cell type. They will only follow that one genetic path, thus the name "uni".

how dose sickle cell anemia affect platelets

Answers

Sickle cell anemia causes elevated platelets
[tex]\textbf{QUESTION:-}[/tex]

[tex]\textrm{how does sickle cell anemia affects platelets}[/tex]

[tex]\textbf{ANSWER:-}[/tex]

Sickle cell disease is a long-term inflammatory condition marked by elevated levels of acute phase reactants and platelet activation. Activation of platelets and platelet-derived chemicals that enhance cellular adhesion both increase during a vaso-occlusive crisis. a. Markers of inflammation produced by platelets

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[tex]\textrm{HOPE IT HELP}[/tex]

[tex]\textrm{HAVE A GREAT DAY!!}[/tex]

How is plate tectonics involved in ocean expansion?

Answers

Answer:

The movement of tectonic plates, which determines the distribution, size, and depth of ocean basins, influencing how water is distributed around the continents.

Explanation:

Workout the path taken by a carbon molecule as it moves from being part of the co2 in the air to being part of a starch molecule in a plant

Answers

Answer: The conversion of carbon dioxide occurs into glucose via photosynthesis.

Explanation:

The plants absorb carbon dioxide gas from the atmosphere. This is one of the reactants of the photosynthesis process. The water and carbon dioxide are the reactants of the photosynthesis process in the presence of sunlight the molecule of water splits into hydrogen and oxygen gas is liberated as byproduct and carbon dioxide becomes the product of the glucose. The monomers of glucose combine to form starch molecule which is stored as energy reserve in plants.

In the Punnett square, fill in the shaded boxes with the alleles of each parent. Use B for the
dominant allele (black fur) and b for the recessive allele (white fur). THIS ONE IS A SECOND ONE PLEASE HELP

Answers

Answer:

you gotta put the small "b" for the female and all the the box will be "Bb"

The dominant allele (black fur) has alleles B and b for the recessive allele (white fur), so the offspring will all have bodies with black fur.

What is phenotype?

Phenotype is the physical appearance of characters which is the result of genes which express in the cell to give a particular trait in the diagram black is dominant over white so all the offspring show a black phenotype.

Male genotype: BB

Female genotype: bb

Cross: BB X bb

Gametes: B, B, b, b

All progeny will be black having genotype Bb, Bb, Bb, Bb.

The Cross is uploaded in the image below.

Genotype is the genetic appearance of the allele which shows the gene is responsible for a particular trait.

Therefore, the dominant allele (black fur) having allele B and b for the recessive allele is crossed, and all progeny will be black having genotype Bb, Bb, Bb, Bb.

Learn more about alleles, here:

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Within a plant cell, the glucose formed as a result of
photosynthesis may be used directly as
1) an energy source during cellular respiration
2) an enzyme for intracellular digestion
3) an absorber of radiant energy
4) a source of molecular oxygen

Answers

Answer:

an energy source during cellular respiration

Which statement best explains how sewage systems help fight the spread of disease?A.They carry antibiotics that kill pathogens in the air.B.They add chlorine to drinking water before it is transported to homes.C.They kill the animals that spread pathogenic bacteria.D.They carry human waste to treatment facilities away from cities.

Answers

Answer:

D.They carry human waste to treatment facilities away from cities.

Explanation:

Sewage system is a collection of systems that carries sewage (human waste) from the point it was produced to a place where it'll be treated or recycled.

Since sewage is moved via the use of sewage system, it helps to fight the spread of disease by carrying human waste (sewage) to treatment facilities away from cities.

Bacterial cells such as escherichia coli transfer pieces of genetic material in a process called?

Answers

conjugation is the process name !

Efforts to reduce pollution began occurring later in the century. If pollution near factories was reduced, what would happen to the color of the moths? Explain your answer.

Answers

Answer: The color of the moths will become light.

Explanation:

Due to industrial exposure of smoke and dust the white color moths adapted a phenotypic trait of dark brown feather color which used to mimic the color of the tree trunk so the moth population was able to camouflage the predatory birds as these moths remain undetected. But due to reduction in pollution the tree trunk color regain its lighter color and these dark colored moths were detected by the predators so the dark color moth population decline and the white color of feather became the phenotypic trait passed in the next generation enabling the moth population to survive in reduce pollution conditions.

Match the type of adaptation to the correct example

Answers

Answer:

hope this helps you! :)

Answers:

a

Explanation:

help me.............​

Answers

Answer:

Explanation:

The first two pictures show an ovum and a sperm so it is 1 for both boxes. The third picture shows embedding into the uterus wall and that is 6.

Answer:

1,1,6

Explanation:

1st pic is an egg so its 1

2nd pic is a sperm so its also 1

3rd pic is attaching 2 uterus wall so its 6

hope u dont mind me double-dipping :)

This is the question I need help with.

Answers

Answer:

where is the question???????????

Where is the question

During , the pressure in the alveoli is less than the atmospheric pressureWhich of the following occurs during exhalation? Increased alveolar volume causes decreased alveolar pressure. Increased alveolar volume causes increased alveolar pressure. Decreased alveolar volume causes increased alveolar pressure. Decreased alveolar volume causes decreased alveolar pressure. Decreased alveolar pressure causes increased alveolar volume​.

Answers

Answer:

............................

During the light reactions of photosynthesis, plants convert light energy into energy the plant can use. Where is the energy stored

Answers

Answer:

Photosynthesis is a process where plants and other organisms convert energy from the sun into a chemical energy that through cellular respiration can be later released in order to fuel the organism's metabolic activities.

The energy which is stored in the form of sugar is broken down into starch entering the mitochondria to produce energy. The energy is stored in the chemical bonds. To obtain the energy, organisms take energy-rich compounds such as glucose and breaks them down to release their energy. The organism traps the released energy and stores it in a form of adenosine triphosphate or ATP.

Explanation:

I’ll mark as brainliest! Pls help

Answers

Answer:

Hi the answer is D.Cells

name of a gland which act as mixed gland __

Answers

Answer:

PANCREATIC ISLETS

Explanation:

Since the pancreas has both endocrine and exocrine functions, it is therefore a mixed gland. Its endocrine secretions are the hormones insulin and glucagon

Pancreas is a heterocrine gland as it acts both as endocrine and exocrine gland. It secretes insulin hormone into blood and act as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.
Hence, pancreas is a mixed gland.
So, the correct answer is 'Pancreas'.

what is the difference between plant cells and animal cells

Answers

A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.

Explanation:

a plant cell contains large cells and animals cells contain larger amount of vacoules

Please help, correct answers only, will give brainliest.

Answers

Answer:

B option

Explanation:

Hope this helps

At a chemical synapse, the intensity of the stimulus is coded by _______. At a chemical synapse, the intensity of the stimulus is coded by _______. the amount of calcium that enters the axon terminal the amount of neurotransmitter released and the amount of calcium that enters the axon terminal the amount of neurotransmitter released the size of the action potential the size of the action potential and the amount of neurotransmitter released

Answers

Answer:

The correct answer is - the amount of neurotransmitter released and the amount of calcium that enters the axon terminal.

Explanation:

The intensity of the signals or stimulus depends on the amount of the neurotransmitter such as acetylcholine, dopamine and the amount of calcium that enters the axon terminal.

A neurotransmitter is a chemical that carries, boost or balance a signal and send stimulus or signals throughout the body. When an action potential reaches the nerve terminal calcium channels open and enters.

In the endocrine system, what is the function of a negative feedback loop?

Answers

Answer:

Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances

Explanation:

To bring concentrations of hormones, blood sugar, osmotic potential, temperature and other body conditions back to normal when they increase above the normal or decrease below the normal.

Which describes a way in which phosphorus may enter into the phosphorus cycle?
Earthquakes release phosphorus.
Phosphorus is carried in the rain that was evaporated from lakes.
Human use of fertilizers release phosphorus into the groundwater.
Phosphorus is transpired from the leaves of plants.

Answers

Answer:

I think the correct answer from the choices listed above is option C. A way in which phosphorus may enter into the phosphorus cycle is that when human use of fertilizers release phosphorus into the groundwater. Hope this answers the question. Have a nice day.

Human use of fertilizers releases phosphorus into the groundwater is a way in which phosphorus may enter into the phosphorus cycle. Therefore, the correct statement is option C.

What is the use of phosphorus?

Phosphorus is a nutrient needed by plants to grow, and it is added to soil in the form of fertilizers. When it rains, the phosphorus is washed away from the soil and carried into nearby rivers, lakes, and groundwater.

The phosphorus is then taken up by plants or become part of the sediment at the bottom of bodies of water.

Phosphorus can be transformed from there and recycled through the different parts of the phosphorus cycle, such as weathering, erosion, and sedimentation. Phosphorus can also be released from the decomposition of organic matter.

Therefore, human use of fertilizers releases phosphorus into the groundwater is a way in which phosphorus may enter into the phosphorus cycle.

Learn more about phosphorus here:

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Please help I’ll give brainliest

Answers

Answer:

2,8,8

Explanation:

the first shell only contains 2 and the other shells contain 8

Which process involves glucose reacting with oxygen to produce energy, carbon dioxide, and water?

Answers

Answer:

Respiration...................

which African country is famous for chocolate​

Answers

Explanation:

Ivory Coast is famous for chocolate .

hope it is helpful to you

Answer:

Congo is famous for their high quality "Lowua pin cilla" chocolata that's made from organic cocoa beans that were raised using the water from the rivers that are highly infused with natural nutrients.

Draining wetlands for housing is a form of stewardship.
- True
- False

Answers

Answer: True

Explanation: stewardship is the act to maintain or manage something. Draining wetlands is an act of maintaining.

in which terrestrial biome can you find tress that produce cones instead of flowers and needles instead of leaves?

Answers

Answer:

I think coniferous forest is the answer

Answer:

Coniferous forest and Lower

What environmental Factor would likely lead to an increase in genetic variation in a population of squirrels

Answers

Answer:

below

Explanation:

different predators or weather conditions within the environment if the environment were to change they would adapt to it as well

I need help please answer this. whoever does this will be marked as brainlest

Answers

there no radius for diagram

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Which of the following is NOT a feature of unclustered index A. There can be several unclustered indexes on a data file B. unclustered indexes are cheap to maintain and update C. un Clustered index has the same ordering of data records as that of the data entries in the database D. unClustered index has a different ordering of data records as that of the data entries in the database 13. During what period in ancient Egypt were the pyramidsbuilt?A. The First IntermediateB. The New KingdomC. The Old KingdomD. The Middle Kingdom Which of the following best describes the role of the Virginia Company in the Jamestown settlement? How is pH measured?A. It is based on a scale of o to 14.B. It is a percentage between 1 and 100.C. It is a level between 1 and 4.D. It is a decimal between 0 and 1. Companies Heidee and Leaudy have the same sales, tax rate, interest rate on their debt, total assets, and basic earning power. Both companies have positive net incomes. Company Heidee has a higher debt ratio and, therefore, a higher interest expense. Which of the following statements is CORRECT? Explain your selection with at least 200 words.a. Company Heidee has more net income.b. Company Heidee pays less in taxes.c. Company Heidee has a lower equity multiplier.d. Company Heidee has a higher ROA.e. Company Heidee has a higher times interest earned (TIE) ratio. What is the surface area of LMNOPQRS? If necessary, round your answer to the nearest tenth. State the optimum pH for sucrase activity and describe how sucrase activity changes at more acidic and more alkaline pH values. What is the relationship between gender and development? Discuss about 600 words Which shows the following expression after the negative exponents have been eliminated? Who was the president of the United States when the War 1 ended Who is a minor character in "Rikki-Tikki-Tavi"? 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Think about it: For Americans, turning on the stove means simply turning a knob or switch. For people living in developing countries, particularly women and childern, it means hours of collecting fuels like firewood, dung, or coal to burn in a rudimentary, smoky cookstove or over an open fire. The result is a constant source of toxic smoke that families breathe in daily causing diseases like child pneumonia, heart disease, and lung cancer, not to mention taking a child away from her education. In fact, diseases caused by smoke from open fires and stoves claim 4.3 million lives every year. That's more than AIDS , malaria. and tuberculosis combined. And the environment suffers, too. When people collect wood every day from their local forests to create charcoal or fuel for wood - burning stoves, it creates an unsustainable pace of deforestation that leads to mudslides, loss of watershed, and other environmental consequences. 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" Why does the author place this paragraph immediately after the two paragraphs about diseases?) A) This paragraph makes a point that contrasts with the point of the previous two paragraphs. B) This paragraph is less important than the previous ones. so it is placed later in the order. C) This paragraph continues the previous two paragraphs by providing evidence for their idea. D) This paragraph makes a related but broader point about environmental harm rather than harm to individuals. ( Question 2) What is the effect of this quote on the tone of the passage? I'm proud to support an effort to bring clean cookstoves and fuels to millions of people. A) It contributes to a somber tone. B) It contributes to a lighthearted tone. C) It contributes to a passionate tone. D) It contributes to a factual tone. ( Question 3) Read these paragraphs from the excerpt: Cooking: it's a simple act that has brought families around the world together for thousands and thousands of years. As a chef, I can thinknof a few things more beautiful than that. However, I also know how deadly such a simple act can be, not only to our health, but to our environmental. Think about it: For Americans , turning on the stove means simply turning a knob or switch. For people living in developing countries, particularly women and childern, it means hours of collecting fuels like firewood, dung, or coal to burn in a rudimentary, smoky cookstove or over an open fire. ( How do these paragraphs contribute to the development of the author's argument?) A) They establish the author's excerpt knowledge about cooking, which demonstrates he is an authority on inferior cookstoves. B) They provide personal support for the global solution to the problems of cooking that the author presents in the article. C) They introduce the solution to the negative effects of cooking in the developing world that appears in later paragraphs. 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Only a large population in a homogeneous habitat can exhibit phenotypic plasticity. A species that lives in a heterogeneous environment is more likely to exhibit phenotypic plasticity. 0lease help I would really appreciate The two lines graphed below are not parallel. How many solutions are there tothe system of equations?55A. Infinitely manyB. OneC. TwoD. Zero In a bread recipe, the ratio of milkto flour is 5 to 4. If 7 cups of flourare used, how many cups of milkare used?