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In a phrase, tell me what each scientist did to help develop the cell theory.

Scientists: Hooke, Leeuwenhoek,
Schleiden, Schwann, and Virchow

Answers

Answer 1
hooke- first to visualize a microorganism

leeuwenhoek- first to observe bacteria and protozoa(single celled organisms)

schleiden- said all plants tissues are composed of cells and that every other cell came from 1 single cell

schwann- concluded all tissues are made of cells

virchow- all cells come from preexisting cells

Related Questions

what does it mean for a bacteria or protist to be photosynthetic?

Answers

Answer:

Because we know that photosynthesis is a process that plants use, we can define photosynthetic protists as 'plant-like' protists that get their nutrients by converting sunlight into energy using photosynthesis.

Explanation:

Photosynthetic organisms, also known as photoautotrophs, are organisms that are capable of photosynthesis. Some of these organisms include higher plants, some protists , and bacteria because we know that photosynthesis is a process that plants use, we can define photosynthetic protists as 'plant-like' protists that get their nutrients by converting sunlight into energy using photosynthesis.Protists can be photosynthetic or heterotrophs (organisms that seek outside sources of food in the form of organic material). They also contain chlorophyll, a pigment which absorbs light energy for photosynthesis. Photosynthetic protists are considered plant-like protists.

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Help in this two questions

Answers

Answer:

i dont know what it is i need points

A line graph has a vertical axis labeled "Average plant height (cm)" and a
horizontal axis labeled "Fertilizer (g/plant)." What information is conveyed by
a point plotted with the coordinates (1, 25)? Keep in mind coordinates are
written as (x-coordinate, y-coordinate).
60
40
Average plant height (cm)
30
10
Fertilizer (g/plant)
A. The average height of plants given 1 g of fertilizer was 25 cm.
B. The range of fertilizer was from 1 g per plant to 25 g per plant.
1
оооо
C. The average height of plants given 25 g of fertilizer was 1 cm.
D. The range of average plant height was from 1 cm to 25 cm.

Answers

Answer:

A. The average height of a plant given 1 g of fertilizer was 25 cm.

Explanation:

What happens to the membrane protein (gray) when it is activated by the signal molecules?

Answers

Answer:

The receptor protein that is embedded in the cellular membrane must accept the signal.

Explanation:

When it receives the signal this protein will then go through a conformational change. This will change the shape and how it interacts with the molecules around it. Different receptor protein will act in different ways.

Answer:

As their name implies, GPCRs interact with G proteins in the plasma membrane. When an external signaling molecule binds to a GPCR, it causes a conformational change in the GPCR. This change then triggers the interaction between the GPCR and a nearby G protein.

What happens to the membrane protein (gray) when it is activated by the signal molecules?

The membrane protein interacts with the nearby GPCR.

Compared to other routes of administration, ________ is the most complicated way for a drug to enter the bloodstream.

Answers

Answer: the answer is oral consumption

Compared to other routes of administration, oral consumption is the most complicated way for a drug to enter the bloodstream.

How many ways can drugs enter the bloodstream?Substances can enter the body in different ways. Drugs can be smoked, inhaled, injected, swallowed (tablets, capsules, liquids), or applied transdermally (applied to the skin). Most of the drugs are taken orally and broken down in the gastrointestinal tract. Once the drug arrives, it is broken down by stomach acid before passing through the liver and into the bloodstream. Medicines can be taken in a variety of ways, including swallowing, inhaling, absorbing through the skin, and injecting. Each method has advantages and disadvantages, and not all methods can be used with all drugs. After the tablet is swallowed, it is usually absorbed through the stomach wall into the blood. These take effect within minutes, but usually take 1-2 hours to reach peak blood levels.

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why is there no enzyme to digest vitamins​

Answers

Answer:

Vitamins are used in their original form by the cells. They are either water soluble or fat soluble, hence no enzyme is required to digest vitamins. They are absorbed directly from the digestive tract, transported by blood to the cells, and the cells absorb and use them whenever they need.

give me answer all these question ​

Answers

Answer:

please write the questions I can't tap the picture.

Tortoise shell cats, like the one shown above, are always femaleWhat scientific phenomenon explains the color pattern of

Answers

Tortoise shell cats can be explained as the offspring from a incomplete dominance cross. Incomplete dominance gives rise to an intermediate phenotype.

The scientific phenomenon that explains the color pattern is X-linked incomplete dominance.

As stated earlier, the tortoise shell colour is as a result of incomplete dominance but as it exists only in females, the inheritance is X linked. This means the tortoise shell colour is inherited in the heterozygous condition as females have two X (XX) and males (XY) can only be either of the parent's true breeding genotype.

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5 blem. ections: Read each question carefully and select the correct answer. Write your wer on a separate sheet of paper. This pertains to a view, a judgment, or an appraisal about a particular matter. a a. fact b. hearsay copinion d. assertion​

Answers

You didn't put up the question for me to answer. You put the choices to choose from, but no question.

which of the following is a property of water?

a. polar molecule
b. regulates temperature
c. universal solvent
d. all of the above

Answers

Answer:

All of the above

Explanation:

The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling, which essentially categorizes all of the above.

Answer: All of the above

PLEASE label this image pleasee

Answers

Answer:

dk

Explanation:

because it's dk u need to add dekk and yes it's uesful

The fern goes through alternation of generations in which there is a Diploid stage and a haploid stage. In the diploid stage under the fern’s leaves there is clusters of sporangium called sorus in which meiosis occurs from the diploids sporocyte creating haploid spores. The haploid spores duplicate through mitosis to turn into a gametophyte. The gametophyte has a upper part which holds the eggs called archegonium and in the lower part where sperm is produced called antheridium.After fertilization occurs the egg duplicates and turns into a zygote and eventually back to a diploid sporophyte firn.

Ethyl alcohol is formed in aerobic respiration .

True or false ​

Answers

Answer:

Mark me brainliest (⌒▽⌒)(⌒▽⌒)

Explanation:

In the alcoholic fermentation, (by yeast, a unicellular fungi) incomplete oxidation of glucose is achieved under anaerobic condition by a set of reactions where the pyruvic acid is converted to carbon dioxide and ethanol.

how oil reservoirs are found

Answers

Answer:

A petroleum reservoir or oil and gas reservoir is a subsurface accumulation of hydrocarbons contained in porous or fractured rock formations. Such reservoirs form when kerogen (ancient plant matter) is created in surrounding rock by the presence of high heat and pressure in the Earth's crust.

Explanation:

Answer:

it is the oil. we want to mine from soil

I do believe that i need help.

Answers

If none of the flower colors being bred don't show dominance, it would be pink only because if one showed dominance, than it means you would see that flower and that flower color only. Mixing red with white create pink, and therefore pink would be the only type of flower to have.

Three kinds of _________ molecules carry out genetic instructions for the production of proteins?​

Answers

Answer:

There are three types of RNA involved in protein synthesis:
messenger RNA (mRNA)
transfer RNA (tRNA)
ribisomal RNA (rRNA).

Explanation:

All three of these nucleic acids work together to produce a protein. The mRNA takes the genetic instructions from the nucleus to the cytoplasm, where the ribosomes are located.

Carbon is rare in that it does NOT bond with any other elements.

Select one:
True
False

Answers

Answer:

False

Explanation:

-Carbon has 4 electrons in its outer shell

-It can achieve a full outer shell by forming Covalent Bonds

ASAPPPPP!!!

Why do cells have a high surface area to volume ratio? *
A. to contain more nutrients
B. to contain more organelles
C. to more readily exchange substances across the cell.
D. to have only small substances travel across the cell.

Answers

Answer: C

Explanation: Smaller single-celled organisms have a high surface area to volume ratio, which allows them to rely on oxygen and material diffusing into the cell (and wastes diffusing out) in order to survive. The higher the surface area to volume ratio they have, the more effective this process can be.

What is the relationship between gene expression and human reproduction and development?
plss

Answers

In the same way, cells during development also express specific sets of genes. These patterns of gene expression cause cells to communicate with neighboring cells, resulting in coordinated development into a multicellular organism.

Distilled water is _____ or _______ to the solution inside a cell

Answers

Answer:

hypertonic or hypotonic

Explanation:

Hypertonic or the other h word

early improvements to microscopes allowed some scientists to view cells and eventually develop what?

Answers

Answer: please add a clear picture

A predator prey relationship. in which the populations rise and fall in response to each other is an example of

A -A positive feedback loop
B - A negative feedback loop
C - A manmade feedback loop
D - all of the above

Answers

Answer:

the answer is d (all of the above)

Explanation:

no

the part of the eye that determines eye color is the

Answers

Answer:

It is the iris that determines eye color.

Explanation:

A person's eye color results from pigmentation of a structure called the iris, which surrounds the black hole in the center of the eye, the pupil. It helps control how much light can enter the eye. The color of the iris can obviously range from blue, green, brown and I think grey too if fiction books can be trusted lol

In an ecosystem, organisms use up
chemical energy and most of the
energy is then lost to the
environment as
A. light
B. heat
C. photons

Answers

B is the correct answer

which type of stimulus is an allergen, such as pollen?

Answers

Answer:

External stimulus is the type of stimulus an allergen, such as pollen, is classified.

Explanation:

How does DNA analysis help scientists better understand evolution

Answers

The scientist see the transmission of DNA in Genes

explain the interaction between geological events, human population, and the environment

Answers

The relationship between the environment, human population and geological events is complex and multidimensional. While human activities can also have significant effects on geological processes, geological events such as earthquakes, volcanic eruptions and climate change can have significant effects on the environment and human populations.

What is an Environment?

The conditions and forces that surround an organism, population or community are called its environment. It includes all elements of the Earth, both living and non-living, such as the atmosphere, hydrosphere, lithosphere, and biosphere.

The environment is a complex system that living things interact with and influence how they survive, develop and thrive. This includes biological elements such as plants, animals, microorganisms and their interactions, as well as physical elements such as temperature, light, water, soil, wind and topography.

Therefore, the relationship between the environment, human population and geological events is complex and multidimensional.

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chromosomes form during what part of the cell cycle?

Answers

Answer:

Prophase

Explanation:

During the prophase, chromatin condense to form chromosomes that are visible.

this is about environmental systems ​

Answers

Answer:

A. A weak or strong current

Explanation:

D. is inccorect because rivers are always freshwater

C. is incorrect because seawater is salt water

B. is incorrect because rivers have waterflow.

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Look at the table for energy used in activities. Ella does 2 hours of dancing a week, plays football for 1 hour a week, and goes swimming for 0.5 hours a week. She has a mass of 55kg. How much extra energy will she need a week in order to do these activities?

Answers

Ella requires 3905 kJ of energy to do 2 hours of dancing a week, 1 hour of football a week, and 0.5 hours of swimming a week.

Ella, with a mass of 55 kg, does a series of activities in a week.

Let's calculate how much energy she needs for each activity in total.

Dancing

Ellas does 2 hours of dancing a week, which consumes 18 kJ/kg.h.

2 h × 55 kg × 18 kJ/kg.h =  1980 kJ

Football

Ella plays 1 hour of football a week, which consumes 25 kJ/kg.h.

1 h × 55 kg × 25 kJ/kg.h =  1375 kJ

Swimming

Ella goes swimming for 0.5 hours a week, which consumes 20 kJ/kg.h.

0.5 h × 55 kg × 20 kJ/kg.h =  550 kJ

Total energy expenditure

E = 1980 kJ + 1375 kJ + 550 kJ = 3905 kJ

Ella requires 3905 kJ of energy to do 2 hours of dancing a week, 1 hour of football a week, and 0.5 hours of swimming a week.

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List 3 powers Congress has.

Answers

Answer: Make laws.

Declare war.

Raise and provide public money and oversee its proper expenditure.

Impeach and try federal officers.

Approve presidential appointments.

Approve treaties negotiated by the executive branch.

Oversight and investigations.

Explanation: Thats all of their powers just choose 3!!

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