Answer: microscopes
Similarly the development of microscopes drove, somewhat later in the same century, the discovery of cells; Hooke and van Leuwenhoek, like Galileo, were hands-on developers of their instruments.The discovery of the green fluorescent protein (GFP), increasingly sophisticated microscopes, and the development of in vitro assays that faithfully reproduce cellular functions are just a few examples of technical advances that have spurred on many areas of cell biology
Explanation:
In what way is the cell membrane like a gatekeeper? (The picture It just because I wanted to put it TwT)
The membrane is a gatekeeper as it only allows access to selected nutrients or cells, if it wants one type of nutrient to process, it will only choose that nutrient!
Hope this helps, if not, comment below please!!!!
Answer:
The cell membrane controls how materials move into or out of a cell, just like a gatekeeper controls the flow of traffic into and out of a parking lot. Movement of substances through a cell membrane WITHOUT using the cell's energy ; includes diffusion, osmosis, and facilitated diffusion.
Explanation: My name is Armalinda here is a google meet code pib-xywc-uaa
Please help ASAP!!!
On a weather map, a low-pressure system is centered just north of a town and the isobars are close together. What weather conditions will most likely occur in the area near the town?
A) A sunny breezy warm day
B) A foggy day with little to no wind
C) A stormy day with strong winds from the south
D) An overcast day with cool winds from the north
What the heck is this. HELPP
Investigation: Cells come from existing cells.
Observe the two flasks, and record information about their appearance.
Day
Flask with open (broken) neck
1_____________
2_____________
3_____________
4____________
5_____________
Flask with intact neck
1 ________________
2________________
3________________
4_________________
5_________________
Answer:
Explanation:
Flask with open (broken) neck- A swan neck flask, also known as a gooseneck flask, is a flask with a particular shape of tube leading into it. A test tube or other vessel may also have a "swan neck"
Flask with intact neck-
If the pollen is located above the stigma, the flower is generally self-pollinated. If the pollen is below the stigma, the flower is generally cross-pollinated. Based on this information, is your flower self-pollinated or cross-pollinated?
Answer:
pollination is defined as the placement or transfer of pollen from the anther to the stigma of the same flower or another flower. In gymnosperms, pollination involves pollen transfer from the male cone to the female cone.
Explanation:
In what type of soil would you recommend locating a drinking water well?
Options:
Sand
Gravel
Soil
Clay
Explain why.
Sand is best for the locating a drinking water well, it is free of rocks good for the water well, hence option A is correct.
What is sand?It is a dry, light, warm, and observe to be acidic and low in nutrients. Sandy soils are frequently suggested as light soils due to their high quantity of sand and little clay (clay measures more than sand).
There are four different types of soil:
Sandy soil.Clay Soil.Silt Soil.Loamy Soil.If soil comprises larger proportion of big particles, it is known as sandy soil. If the quantity of fine particles is comparatively higher, then it is named clayey soil. The quantity of large and fine particles is usually the same, then the soil is called loamy.
Therefore, sand is the best for the locating a drinking water well, hence option A is correct.
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How are internal and external fertilization alike and different?
Answer:
Internal fertilization is the process when the syn-gamy "union of male and female gamete", occurs inside the female body after insemination using copulation. External fertilization is the syn-gamy outside the female body, that is in the outer environment especially in water bodies. Sorry if this is a late answer.
Explanation:
In science class, Blaine’s teacher puts one glow stick in a cup of hot water and another glow stick in a cup of cold water. She asks the students to think about how the temperature of the water will affect the chemical reaction that occurs inside the glow stick once it is bent and starts to glow.
Which glow stick will be brighter once it is bent? Explain your answer.
Answer:
The glow stick that was in the cup of hot water will be brighter once it is bent. The production of more light is evidence that the chemical reaction in the glow stick is happening faster. The reaction happens faster, because increasing the temperature increases the rate of a chemical reaction.
hope its helpful
Question is on picture pls explain .
Answer:
b
Explanation:
trust me
What is your favorite type of animal ? (I'm board)
I like dogs wby
Answer:
doggggggggggggggggggggggg
Explanation:
because
How do individuals in a population get their traits?
Answer:
New traits can also come from transfer of genes between populations, as in migration, or between species, in horizontal gene transfer. Evolution occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift.
Explanation:
Research and Discover: Learn more about Louis Pasteur. Conduct research using Connexus lessons and the internet. Write a full paragraph response using facts to answer the question below. You must cite your resource at the end of your response.
What Contributions Did Louis Pasteur Make to Medical Science?
Resource 1-
Resource 2-
What resources did you use to answer the question above? Cite your resources here.
Resource 1-
Resource 2-
Answer:Here you go
Louis Pasteur ForMemRS (/ˈluːi pæˈstɜːr/, French: [lwi pastœʁ]; December 27, 1822 – September 28, 1895) was a French biologist, microbiologist, and chemist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization. He is remembered for his remarkable breakthroughs in the causes and prevention of diseases, and his discoveries have saved many lives ever since. He reduced mortality from puerperal fever and created the first vaccines for rabies and anthrax.
His medical discoveries provided direct support for the germ theory of disease and its application in clinical medicine. He is best known to the general public for his invention of the technique of treating milk and wine to stop bacterial contamination, a process now called pasteurization. He is regarded as one of the three main founders of bacteriology, together with Ferdinand Cohn and Robert Koch, and is popularly known as the "father of microbiology".[4][5][6]
Pasteur was responsible for disproving the doctrine of spontaneous generation. He performed experiments that showed that, without contamination, microorganisms could not develop. Under the auspices of the French Academy of Sciences, he demonstrated that in sterilized and sealed flasks, nothing ever developed; and, conversely, in sterilized but open flasks, microorganisms could grow.[7] Although Pasteur was not the first to propose the germ theory, his experiments indicated its correctness and convinced most of Europe that it was true.
Today, he is often regarded as one of the fathers of germ theory.[8] Pasteur made significant discoveries in chemistry, most notably on the molecular basis for the asymmetry of certain crystals and racemization. Early in his career, his investigation of tartaric acid resulted in the first resolution of what is now called optical isomers. His work led the way to the current understanding of a fundamental principle in the structure of organic compounds.
He was the director of the Pasteur Institute, established in 1887, until his death, and his body was interred in a vault beneath the institute. Although Pasteur made groundbreaking experiments, his reputation became associated with various controversies. Historical reassessment of his notebook revealed that he practiced deception to overcome his rivals
Explanation:
What is the primary function of the contractile vacuoles?
Answer:
According to my teacher:
is an osmoregulatory organelle of free-living amoebae and protozoa, which controls the intracellular water balance by accumulating and expelling excess water out of the cell, allowing cells to survive under hypotonic stress as in pond water.
(PLZ HELP ME WITH THE PROCEDURE AND DATA)
Objective(s):
In your own words, what was the purpose of this lab?
The purpose of this lab is to Learn how to
Recognize that the movements of Earth's plates result in various geologic events
Identify land formations that are a result of plate movement
Explain how plate movement can lead to volcanic eruptions, earthquakes, and mountain formation
Differentiate between slow and rapid changes caused by plate tectonics
Investigate the movement of Earth's plates using models that illustrate the structures that result from the movement of the plates
Hypothesis:
In this section, please include the if/then statements you developed during your lab activity for each location on the map. These statements reflect your predicted outcomes for the experiment.
Location One: Select two events that you predict will be observed. If I explore two continental plates at a convergent boundary, then I will observe:
earthquakes
faults
Location Two: Select three events that you predict will be observed. If I explore two continental plates at a divergent boundary, then I will observe:
ocean formation
volcanoes
seafloor spreading
Location Three: Select three events that you predict will be observed. If I explore two continental plates at a transform boundary, then I will observe:
earthquakes
faults
island chains
Location Four: Select two events that you predict will be observed. If I explore two oceanic plates at a convergent boundary, then I will observe:
mountains
volcanoes
Location Five: Select three events that you predict will be observed. If I explore two oceanic plates at a divergent boundary, then I will observe:
earthquakes
faults
seafloor spreading
Location Six: Select two events that you predict will be observed. If I explore two oceanic plates at a transform boundary, then I will observe:
faults
island chains
Procedure:
The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable), outcome variable (dependent variable).
Reminder: Test variable = the item you are changing or manipulating; Outcome variable = the item you are measuring
Test variable (independent variable):
Outcome variable (dependent variable):
Data:
Record the data from each location below.
Location Name
Boundary Type
(C=Convergent, D=Divergent, or T=Transform)
Year Observed
(5, 10, or 20 million years)
Geologic Events Observed
(earthquakes, faults, ocean formation, mountains, volcanoes, island chains, seafloor spreading)
Location One
Himalayas
5
Event 1-
20
Event 2-
Location Two
East Africa
5
Event 1-
10
Event 2-
20
Event 3-
Location Three
San Andreas fault zone
5
Event 1-
10
Event 2-
20
Event 3-
Location Four
Aleutian Islands
5
Event 1-
20
Event 2-
Location Five
Mid-Atlantic Ridge
5
Event 1-
10
Event 2-
20
Event 3-
Location Six
Alpine Fault
5
Event 1-
20
Event 2-
Answer:
To facilize students with experimental apparatus, the scientific method, and methods of data analysis so that they will have some idea of the inductive process by which the ideas were originated. To teach how to make careful experimental observations and how to think about and draw conclusions from such data.
Explanation:
1. Why can you keep getting the common cold when you can get the mumps only once?
2. What are some things you can do to improve your immune system to help fight infections?
Answer:
Once a person has developed mumps they remain immune to that disease for the rest of their lives. Therefore if they come in contact with the virus again their immune system recognises the virus and eradicates it. To improve your immune system you can eat healthy and exercise often.
Explanation:
The question is on the picture .
Answer:
"C. Two tectonic plates moving away from one another."
Explanation:
Mid-ocean ridges are formed when seafloor spreading occurs among a divergent plate boundary.
Answer:
B- two plates pushing against each other I believe
Explanation:
can someone help out please
Relative positions of the Sun, Earth and Moon have different effects on Earth's oceans. Which model shows the position of the Sun, Earth and Moon have the greatest effect on ocean tides?
The correct option is "J" which shows the position of the Sun, Earth and Moon have the greatest effect on ocean tides.
What positions of the sun the moon and earth have the greatest effect on ocean tides?Both the Moon and the Sun affect the ocean waves, the Moon plays the biggest role. Although the Sun's gravitational pull on the Earth is 178 times more robust than the Moon's, the tidal bulges it causes are much smaller.
Thus, option "J" is correct.
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how many toes do you have total?
Answer:
exactly 10 toes in total
PLEASE HELP I AM RUSHING ON WORK !!!
The mesoderm in an embryo will become the organism’s muscles.
Why is this statement true or false?
True; specific body parts will develop from specific cells or groups of cells in an embryo.
False; any cell in a mature embryo can develop into any cell of the body.
False; specific body parts do not develop from specific cells or groups of cells in an embryo.
True; all cells in a mature embryo can develop into muscle.
Answer:
True; all cells in a mature embryo can develop into muscle.
Explanation:
True; all cells in a mature embryo can develop into muscle. Therefore, the mesoderm in an embryo will become the organism’s muscles.
What develops from mesoderm?The middle layer of the three germ layers, the mesoderm, forms during gastrulation in the very first stages of most animals' embryonic development. The ectoderm is the outer layer while the endoderm is the inner layer. mesoderm-derived tissues.
All other body tissues, such as the dermis of the skin, the heart, the muscular system, the urogenital system, the bones, and the bone marrow, are formed from mesoderm cells, which are found between the endoderm and the ectoderm (and therefore the blood). In this process of organogenesis, which is the formation of organs, the mesoderm interacts with the endoderm and the ectoderm to give rise to the organs.
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SOMEONE PLEASE HELP!!!
Which statement describes Hutton and Lyell’s work?
Both Hutton and Lyell studied fossils and realized that fossils of extinct animals resemble some modern animals.
Both Hutton and Lyell claimed that Earth was very old and changed very slowly over time.
Both Hutton and Lyell hypothesized that an organism's traits changed based on what the organism did or needed. The improved trait was then passed on to its offspring.
Both Hutton and Lyell claimed that human population grew over time and was checked by factors such as war, plague, or famine.
Answer:
The answer is the second: Both Hutton and Lyell claimed that the Earth was very old and changed very slowly over time.
Explanation:
During the 19th century, the common thought was that everything in heaven and on Earth was made by God and had biblical origins. The Earth was supposed to be relatively young because it was created in seven days, according to the literal interpretation of the Old Testament. Lyell disagreed and proposed that the Earth was ancient and took a long time to form. Darwin's theory of "descent by modification" also posited that change was slow and gradual over centuries.
I hope I have helped you, can you put that this is the smartest answer please.
what is your first finger called?
Answer:
The one next to your thumb is called the fore finger, pointer finger, or index finger.
Explanation:
Answer:
Pinky, thumb, ring finger, middle finger, and pointing finger.
Explanation:
They are on my hands at least
"Compare and contrast the troposphere and the thermosphere:
I have one example already but I need some extra help, I would really appreciate it!
Answer: here it is :D
Explanation:As nouns the difference between thermosphere and troposphere. is that thermosphere is thermosphere (layer of the earth's atmosphere) while troposphere is troposphere. thermosphere. English. Noun. The layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere.
Answer:
thermosphere is thermosphere (layer of the earth's atmosphere) while troposphere is troposphere.
ation:
This layer also contains ratios of nitrogen and oxygen similar to the troposphere, except the concentrations are 1000 times less and there is little water vapor there, so the air is too thin for weather to occur. The thermosphere is the uppermost layer of the atmosphere.
What are the 4 reasons that natural selection occurs?
Answer:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
:
How are internal and external fertilization alike?
Answer:
Explanation:
Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies
In which way will energy be used after it leaves the mitochondrion during cellular respiration?
O repairing parts of damaged tissue
O combining with carbon dioxide
O building new oxygen molecules
O starting the second stage of respiration
Answer:
repairing parts of damaged tissue
- hope this is correct and if not i hope it at least helped have a good rest of your day :)
Explanation:
repairing parts of damaged tissue combining with carbon dioxide building new oxygen molecules starting the second stage of respiration
____cells need a way to____ and____ their own process and functions
Please my grades are being checked today!! <3 thnx
Answer:
Explanation:what topic
HELP ME ON THIS LAB REPORT PLEASE!!!
Answer:
So basically your teacher is asking you to plan out some of the steps that you want to take for your lab report. They already gave you the mandatory steps that are required in lab reports. Once you're finished planning out the structure of your lab report you work off of that template on another doc. I hope this will help you out on your lab report, good luck!
Explanation:
If this doesn't help you should consider emailing your teacher for clarification.
which material do humans not rely on soil to help provide
QUESTIon in the picture .
i need a better science grade so im trying to at least get an 80 percent, no lower grade