What was Anton van Leeuwenhoek contribution in the development of cell theory

Answers

Answer 1

Answer:

animalcules

Explanation:

that is it i think


Related Questions

Write two sentences or clues, one for each word, that will help you remember the difference between actin and myosin. (Example: Actin is actively pulled)?

Answers

Answer:

The correct answer is -

Actin produces thin contractile filaments within muscle cells,

Myosin produces the dense contractile filaments within muscle cells

Explanation:

Actin is a globular protein that makes actin filaments by arranging in the long spiral chain or produces thin contractile filaments within muscle cells. It is found in cell cytoplasm as well as in the nucleus in eukaryotic cells.

Myosin is a motor protein that produces the dense contractile filaments within muscle cells and plays role in generating movement and force from chemical energy.

What was the goal of "victory gardens"

Answers

Answer: During World War II, Victory Gardens were planted by families in the United States (the Home Front) to help prevent a food shortage. This meant food for everyone. Planting Victory Gardens helped make sure that there was enough food for our soldiers fighting around the world.

True or false: Drug resistance only arises from an organism gaining the genetic information for the resistance from another organism.

Answers

Drug resistance only arises from an organism gaining the genetic information for the resistance from another organism.

Answer: True

During pulmonary ventilation, relaxation of the diaphragm and external intercostals ________ and air flows out of the lungs. increases the pressure in the thoracic cavity flattens the floor of the thoracic cavity increases the volume of the thoracic cavity expands the rib cage stimulates the phrenic nerve

Answers

Answer:

Increases the pressure in the thoracic cavity

Explanation:

During pulmonary ventilation, relaxation of the diaphragm and external intercostals increases the pressure in the thoracic cavity and air flows out of the lungs.

Pulmonary ventilation involves the exchange of air in the body. The exchange mainly takes place between the lungs and the the blood. When the lungs take in oxygen it distributes it to other parts of the body after which the byproduct is expelled in the form of Carbon dioxide.

The diaphragm and intercostal muscles are found close to the chest(thoracic) region such that when air is expelled it produces a similar effect such as relaxation of the diaphragm which also makes the chest muscles go down and exert pressure. This mechanism aids the expulsion of Carbon dioxide from the lungs.

Name the 3 systems make a
nervous system of rabbit.​

Answers

1. The central nervous system including brain and spinal cord.

2. The peripheral nervous system including nerves coming out from the brain and spinal cord, i.e., cranial nerves and spinal nerves.

3. The autonomic nervous system including sympathetic nervous system and parasympathetic nervous system.

Answer:

The nervous system of rabbit consists of three divisions:

1. The central nervous system including brain and spinal cord. 2. The peripheral nervous system including nerves coming out from the brain and spinal cord, i.e., cranial nerves and spinal nerves.

Explanation:

What do you think are the possible alleles for eye color in humans?

Answers

Answer:

I'm not sure but i think its brown and blue

Autoclaving is the most effective among all moist heat-related antimicrobial methods. (True or False)

Answers

Answer:

True.

Explanation:

Autoclaving is the most effective among all moist heat-related antimicrobial methods because this method can kill all the harmful microbes such as bacteria, fungi and viruses. Moist heat causes destruction of microorganisms by denaturation of macromolecules that is present in their body such as proteins. Autoclaving is a very common method for moist sterilization. It is an effective method in killing fungi, bacteria, spores, and viruses but it does not eliminate prions.

To provide energy for the work that cells do, all cells need____

Answers

all living cells need oxygen

what are the waste products of the kidneys​

Answers

Answer:

your answer is correct. it is option 3

The kidneys remove waste products called urea from the blood through tiny filtering units called nephrons.

True or false? One theory about phototropism is that auxin triggers a reaction on the shaded side of the stem that causes cell elongation on that side of the plant.
Group of answer choices

True

False

Answers

Answer:

one theory about phototropism is that auxin triggers a reaction on the state side of the steam ***** false

One theory about phototropism is true

Which of these is not a common feature for all life?
a. DNA is the hereditary material.
b. Living things adapt to their environment.
c. Living things breathe air.
d. Living things carry out a series of chemical
reactions known as metabolism.

Answers

Answer:

A

Not sure :-[ ^_^

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

The BRCA-1 genes in humans encode proteins that have role in maintaining DNA stability. Mutation in this gene results in formation of non-functional protein, which is not able to repair damaged DNA, resulting in a significantly increased risk of breast cancer. BRCA-1 is a/an: Group of answer choices Proto-oncogene Homeotic gene Oncogene Tumor suppressor gene

Answers

Answer:

tumor suppressor gene

Explanation:

A tumor suppressor gene is capable of modulating cellular processes during cell division and/or replication, thereby avoiding uncontrolled cell proliferation and tumor development. For example, the p53 gene is a tumor suppressor gene that encodes a protein (p53) which is well known to regulate critical cellular processes such as, for example, cell cycle arrest and programmed cell death (apoptosis). Moreover, breast cancer genes BRCA1 and BRCA2 are tumor suppressor genes that regulate the repair of damaged DNA through the Homologous recombination (HR) pathway. In consequence, mutations in BRCA1 and BRCA2 genes can increase the risk of developing breast cancer.

please answer this:)​

Answers

May to October octuder to Dedembera

Mutualism is a symbiotic relationship
where...
A. both organism gain from the interaction.
B. one organism gains but the other is unaffected.
C. one organism gains but the other is harmed.

Answers

The correct answer is A

Answer:

A. both organism gain from the interaction.

Explanation:

mutualism meaning both parties profit.

Protein digestion begins in the ________; fat digestion begins in the ________. Stomach; small intestine Mouth; stomach Esophagus; stomach Small intestine; small intestine Small intestine; large intestine

Answers

Answer:

Protein digestion begins in the mouth

Fat digestion begins in the stomach

Once a protein supply reaches your stomach, hydrochloric acid and enzymes referred to as proteases spoil it down into smaller chains of amino acids. Amino acids are joined collectively through peptides, that are damaged through proteases.

Fat digestion starts offevolved withinside the stomach. Some of the byproducts of fats digestion may be immediately absorbed withinside the stomach. When the fats enters the small intestine, the gallbladder and pancreas secrete materials to in addition spoil down the fats.

What is digestion?

The approaches of digestion encompass six activities: ingestion, propulsion, mechanical or bodily digestion, chemical digestion, absorption, and defecation. The first of those approaches, ingestion, refers back to the access of meals into the alimentary canal thru the mouth.

Thus it is well explained.

To know more about the Esophagus refer to link :

https://brainly.com/question/1284374

Select all that apply.

All cells have similar structures, including _____.

a plasma membrane
vacuoles
protoplasm
chloroplasts
cell wall
cytoplasm

Answers

All cells have similar structures, including

plasma membraneprotoplasmcytoplasm

New fossil primates are recovered in a stratigraphic layer of volcanic ash that includes fossil molars of a pig species known to have become extinct about 30 million years ago. Identify the fossil dating methods that are appropriate to use in determining the age of the fossil primates. Correct Dating Methods inquizitive

Answers

Answer:

The correct dating methods will be:

radiopotassium datingbiostratigraphic dating

Explanation:

The primate fossils presented in the question above must be submitted to the dating processes known as radiopotassium and biostratigraphic so that the age of these fossils can be determined as accurately as possible.

Radiopotassium dating is based on the half-life of potassium, which is equal to 40 years. The term half-life refers to the number of years it takes for half the number of atoms of the radioactive isotope to be destroyed. Thus, radiopotassium dating measures the amount of potassium present in a fossil and relates this amount to the half-life of potassium, thus being able to calculate the age of the fossil.

Biostratigraphic dating, on the other hand, allows the age of a fossil to be determined by being compared with the age of another fossil and the physical and structural composition that these fossils have.

Therefore, to determine the age of primate fossils, radiopotassium dating would first be used in some fossils. These would be used as a model during biostratigraphic dating, allowing confirmation of the age of other fossils.

A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH?

Answers

Answer:

This question lacks options, the options are:

A. 1

B. 3

C. 6

D. 11

The answer is C. 6

Explanation:

pH of a solution refers to the concentration of hydrogen ions in that solution. A scale is used to measure pH of a solution.

* A pH value less than (<) 7 is said to be ACIDIC. The lesser the number, the more acidic

* A pH value of exactly 7 is said to be NEUTRAL

* A pH value above (>) 7 is said to be BASIC OR ALKALINE. The higher the number, the more alkaline.

According to this question, two solutions of equal volume with pH values of 2 and 12 respectively were combined. Based on the explanation of pH scale, the solution with pH 2 is said to be very ACIDIC while the solution with pH 12 is said to be very ALKALINE.

Hence, if this two solutions are combined, a neutralization will occur which will result to a solution with close to neutral pH (7). In the above options, 6 is the closest pH value to NEUTRAL and hence, the most likely pH of the resulting solution.

Answer:

6

Explanation:

edge 2022

Discuss the impact of development planning for economic development for a development country like Pakistan under what circumstances a country should go for short term medium term and long term plan (it is a economics question)

Answers

Answer:

Great impact.

Explanation:

There is a great impact of development planning for economic development for a country because this development planning is important for the growth of economy of the country. Without planning, goals of better economy can not be accomplished. A country should go for short term plan in order to solve the economic problem at that time while on the other hand, medium and long term plan is used by the country in order to solve the economic problem completely.

The weirdest laws in the world gets brainliest. Look up the weirdest laws in the world and either post it in the comments or as an answer.

I don't want anything inappropriate or I will report you!

Answers

Answer:

Parliaments famous Salmon Act of 1986 states that it's illegal to hold salmon under suspicious circumstances.

How is a virus different from a bacterium?
A. A virus causes illness, but a bacterium does not.
B. A bacterium is a living cell, but a virus is not.
C. A virus is a living cell, but a bacterium is not.
D. A bacterium causes illness, but a virus does not.

Answers

Answer:

option B

Explanation:

On a biological level, the main difference is that bacteria are free-living cells that can live inside or outside a body, while viruses are a non-living collection of molecules that need a host to survive.

do consider marking as Brainliest if this helps!!

The answer is b a bacterium is a living cell but a virus is not

Which weathering process involves physical forces but not chemical
reactions or dissolving of minerals?

Answers

Answer:

Mechanical weathering, also called physical weathering, breaks rock into smaller pieces. These smaller pieces are just like the bigger rock, just smaller. That means the rock has changed physically without changing its composition.

Explanation:

GIVE BRAINLIST

Inhalation and exhalation move air into and out of the lungs. What happens when you inhale and exhale

Answers

When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). Hope this helps

tRNA Molecules
Cytoplasm
Leu
Ser
Leu
car
Ser
Pro
Arg
Tyr
Glu
Gly
GAC
AGG
G A G
AGA
G GA
UCU
GUA
с и с
CC G
Anticodons
Met-Lys
H20 Counter
1
U UC
Codons
GA A GGG CCA ACGACUUU AUCGG
mRNA
5'
Ribosome
3'
Continue to build the protein by joining amino acids to the chain in the correct order. Every amino acid
joined to the protein results in the production of one more water molecule. Click "Dehydrate" to form the
peptide bonds and watch the water molecule counter and be sure to record all data in your data table.
1) Intro

Answers

Answer:

What are you even listing!

Are there any parts of the human body that get oxygen directly from the air and not from the blood?
A. Yes
B. No
C. Neither​

Answers

Answer:

yes

Explanation:

your lungs

Answer:

Yes because the cornea in your eye takes oxygen directly from the air, not from your blood.

Why do you think gene therapy is such a promising field for this disease?

Answers

Answer:

Gene therapy replaces a faulty gene or adds a new gene in an attempt to cure disease or improve your body's ability to fight disease. Gene therapy holds promise for treating a wide range of diseases, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.

Which is not an affect of testosterone in males?
A.Increase muscle mass
B.Change the voice to a higher pitch
C.The thickness and distribution of hair follicles on the body and head
D.Sperm production

Answers

Answer:

the answer is c

Explanation:

not much else to explain

The Answer is c hope it helps

What type of microscope most likely produced the image of a mitochondrion?

Answers

Answer:

Mitochondria are visible under the light microscope although little detail can be seen. Transmission electron microscopy (left) shows the complex internal membrane structure of mitochondria, and electron tomography (right) gives a three-dimensional view.

Explanation:

Assuming a normal individual weighs 110 pounds. What is the amount of water needed daily to remain hydrated according to the lecture?

A) 25 ounces
B) 35 ounces
C) 45 ounces
D) 55 ounces

Answers

Answer:

D

Explanation:

The intake of someone of the that weight should be 73 ounces you haven't given me any form of formula so I went with the highest.

write an account of the different methods of protecting endangered species of animals and plants around the world. include the use of legalisation in your answer 6
QER

Answers

Answer:

Provide suitable place, making laws and reduce pollution.

Explanation:

Provide suitable place where they can breed without disturbance, making laws to forbit hunting of endangered species and reduce pollution are the different methods that can protect endangered species of animals and plants around the world. For increase in population, suitable environment is required so that they have no predators or other factor that adversely affect their growth. The laws to forbit hunting or killing has also a significant effect on endangered species. Pollution is the main reason for change in the environment that make the environment not suitable for animals and plants.

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A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of HURRY PLEASEEssay: The Effects of Watching Television on Adolescents If a bus travel for 120 minutes at a speed of 75 kilometers per hour how far has the bus traveled? Which operation will solve the following word problem? Jeff earns $14.00 per hour, Tom earns half as much as Jeff. How much does Tom earn per hour?MultiplicationSubtractionAdditionDivision Question Mode Fill in the Blank Question Fill in the blank question. The ABC Company had its highest level of production in May when they produced 4,000 units at a total cost of $110,000 and its lowest level of production in November when they produced 2,500 units at a total cost of $87,500. Using the high-low method, the estimated fixed costs are $ . Rajah 1 menunjukkan lukisan pelan berskala bagi sebuah rumahlantainya berbentuk dua segi empat sama.Skala yang digunakan adalah 1:200. Jikakos memasang jubin jalah Rm 30 per m3berapakah jumlah kos memasang jubin bagirumah tersebut? Imagine that you need to compute e^0.4 but you have no calculator or other aid to enable you to compute it exactly, only paper and pencil. You decide to use a third-degree Taylor polynomial expanded around x = 0. Use the fact that e^0.4 < e < 3 and the Error Bound for Taylor Polynomials to find an upper bound for the error in your approximation. I error l According to O'Neill, the various versions of Kant's categorical imperative look extremely dissimilar. True False A company borrowed $19,000 by signing a 180-day promissory note at 10%. The maturity value of the note is: (Use 360 days a year.) SCALCET8 3.11.501.XP. Find the numerical value of each expression. (Round your answers to five decimal places.) (a) sinh(ln(4)) (b) sinh(4) The area of the rectangular sandbox at Dave's school is 117 square feet. The sandbox has a width of 9 feet as shown in the diagram. What is the perimeter of the sandbox? Few drivers realize that steel is used to keep the road surface flat despite the weight of buses and trucks. Steel bars, deeply embedded in the concrete, are sinews to take the stresses so that the stresses cannot crack the slab or make it wavy. The passage best supports the statement that a concrete road the percentage of people under the age of 18 was 23.5% in New York City, 25.8% in Chicago, and 26% in Los Angeles.If one person is selected from each city, what is the probability that all of them are under 18? Research finds that when receiving treatment for a substance use problem, the treatment has to last for at least ________ month(s) before a positive outcome is likely to be achieved. Cul es la importancia que tiene la poca de guerra fra para la organizacin geopoltica actual del mundo? (Argumentar ideas) lidentify the domain of the function shown in the graphO A 15257O B. 19334O C. 221O D. All real numbers What tone and mood are expressed in the story the fly machine by Ray Bradbury. Find evidence with it Which line is parallel to the line that passes through the points (1,7) and (-3, 4)? A. y=--x-5 B. y=+*+1 y=-x-8 O c. D. 11 v==x+3 4 A total of $20,000 is invested at an annual interest rate of 6%. No matter how many years thismoney is invested, what is the best investment plan to earn the most money in the end?Compounded continuouslyCompounded dailyCompounded quarterlyCompounded monthly 5. What is the value of x if the quadrilateral is a kite? B X+2 C 13 A Xth12 D