Describe how Stella’s view of these cells and their parts changed as she transitioned through the three levels of magnification. Be sure to identify at least one cell structure or part of the paramecium in your description.
Answers
Answer:
The paramecium body.
Explanation:
1. The objective lenses on a compound light microscope doess have powers that start of as smallest to highest power, 4x, 10x, and 40x on the maximum power setting. This means that the sample can be magnified either, 40x, 100x or 400x.
At 40x magnification Stella will see organism 5mm.
At 100x magnification Stella will be able to see organism 2mm.
At 400x magnification Stella will be able to see organism more closely, 0.45mm, or 450 microns.
2. Paramecia are shoe shape or molded and almost transparent and shrouded in a defensive pellicle.
Pellicle capacities like skin and shields them from the components. For movement they have cilia.
Answer:
At 40x, Stella could see the cells, but they looked really small. At 100x, Stella was able to see the cells to the point where she could see most of them up close. At 400x, Stella could see the cells one by one close enough. Some of the cells are shoe-shaped, which is one of the characteristics of paramecium. The brown at 400x next to the orange is the one that mostly looks like a shoe.
Related Questions
What does the diaphragm do, and what would happen if someone didn’t have a diaphragm or the diaphragm stopped working? Please provide a detailed explanation.
Answers
Answer:they would die
Explanation:
because
In baseball, a fly ball happens when a player hits the ball high into the air. The player on the other team must wait for it to come down to catch it. Imagine that there were suddenly no gravity on Earth. How would a fly ball be different?
Answers
Answer:
If there were suddenly no gravity on Earth, a fly ball would never come down.
The ball would continue to travel in a straight line in the direction it was hit, until it hit something.
This is because gravity is the force that pulls objects towards the center of the Earth. Without gravity, there would be no force to pull the ball down.
This would make baseball a very different game!
Explanation:
Which of the following adaptations would help a tree-dwelling nocturnal scavenger survive in its environment?
Light-colored fur
Heels with fur
Night vision
Short snout
Answers
Find the mean, median, and mode of the following list of values. Round to the nearest tenth if necessary.
30, 26, 25, 11, 34, 20, 26, 26
a.
Mean = 99
Median = 26
Mode = 26
c.
Mean = 24.8
Median = 34
Mode = 26
b.
Mean = 24.8
Median = 26
Mode = 25
d.
Mean = 24.8
Median = 26
Mode = 26
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
D.
Mean: 24.8
Median: 26
Mode: 26
Explanation:
The mean is the average. To find the average, add up all the numbers and divide by the amount of numbers there are.
30 + 26 + 25 + 11 + 34 + 20 + 26 + 26 = 198
Now, we divide by how many numbers we started out with (8).
198 divided by 8 = 24.75, rounded would be 24.8
To find the median, you arrange the numbers from smallest to largest, and find the middle number like this:
11, 20, 25, 26, 26, 26, 30, 34
As you can see, the middle number is 26.
To find the mode, you arrange the number from smallest to largest, and find the number that appears more often.
11, 20, 25, 26, 26, 26, 30, 34
As you can see, the number 26 appears the most often.
So, we end up with:
Mean: 24.8
Median: 26
Mode: 26
:)
Explanation: mean = 24.75
Median 26
Mode 26
Need Help!
What conclusion can be drawn about the number of elements the make up the majority of the world in which we live and the total number of elements identified on the Periodic table?
Answers
Answer:
I think what you're reaching for is how the vast majority of the world we live in is comprised of only a few elements on the periodic table (carbon, hydrogen, oxygen, to name a few).
Explanation:
The other molecules identified on the periodic table do exist in nature but in much smaller quantities than those of a select few atoms.
Answer:
Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.
Explanation:
can someone pleaseeeee answer paper 7, 8, 9 at least one of them ;-;
Answers
!!WWILL GIVE BRAAINLIEST! PLEEASSEEE HELP))
In the moouth ____________ mechaaanicaaaallyyy (physicaaaally) diggest foood.
AA: Teeth,aamaalyysee
B: Tooungee, cheewwingg
CCC: Teeth, cheewwingg
D: Saaalivaaa, aaaamaalysee
(traaanslation: In the mouth ____________________mechanically (physically) digest food.
A. Teeth,amalyse
B. Tongue, chewing
C. Teeth, chewing
D. Saliva, amalyse )
Answers
f human cells could use the food eaten in that form, there would be no need for a digestive system. The digestive system changes the food into a form that can be used by the cells and that enables the nutrients to get into the blood so they can be transported throughout the body
There are two kinds of digestion: mechanical and chemical. Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates. (An enzyme is a protein that can catalyze certain biochemical reactions).
The Digestive Process
Mouth
Food is chewed into smaller pieces. Adults have 32 specialized teeth—teeth that can grind, chew, and tear different kinds of food. The tongue is an organ consisting of skeletal muscles (voluntary muscles) that move the food around the mouth to allow for efficient mechanical digestion. Salivary glands beneath and in back of the tongue secrete the saliva that allows for easier swallowing of food and the beginning of chemical digestion.
↓
Pharnyx
Swallowing forces the chewed food through a tubular entrance (pharynx) to the esophagus (food tube). As food is swallowed a flap-like valve, the epiglottis, closes over the trachea (windpipe) to prevent food entering the windpipe and causing choking.
The stomach starts chemical digestion of protein. Secretions from the stomach lining consist of about two liters of hydrochloric acid (HCl), pepsin, and other fluids that make up gastric fluids each day. The fluid is extremely acidic and it helps kill bacteria and other pathogens that may have been ingested.
The thick mucus also produced by the stomach lining usually keeps the acids from damaging the lining. If not enough mucus is produced or if too much acid is produced, peptic ulcers form. Heredity, stress, smoking, and excessive alcohol intake can make the ulcers worse. The condition can worsen and bleeding ulcers can result.
Food stays in the stomach for approximately 3-4 hours and moves through another sphincter muscle to pass into the small intestine.
↓
Small intestine
Nearly 7 meters in length, the small intestine is folded and curled around a small area in the abdominal cavity. The inside surfaces of the intestine are covered with projections called villi. These finger-like structures are covered in smaller projections called microvilli and work to absorb food molecules that have been broken down by the processes of chemical digestion.
The small intestine has three distinct parts: the duodenum, the jejunum, and the ileum. Each day, about 9 liters of fluid enters the duodenum. Most chemical digestion takes place in the duodenum by chemicals secreted by the liver, pancreas and small intestine. The other two sections of the small intestine, the jejunum and the ileum, absorb food molecules by way of the villi directly into the blood stream.
Large intestine
The large intestine receives the material “left-over” from chemical digestion that is basically nutrient free. Only water, cellulose, and undigestible materials are left. The main job of the large intestine is to remove water from the undigested material. Water is quickly removed from the material through villi and returns to the blood stream.
Liver
The liver is a large organ located just above the stomach. The liver produces bile which helps digest lipids. Bile is stored in the gallbladder and flows from the gallbladder to the duodenum where it helps digest fats.
The picture at the left shows a human liver.
Gall bladder
The gall bladder is a small, greenish organ located just under the liver. It stores bile produced by the liver until it is secreted directly into the first section of the small intestine.
Pancreas
The pancreas has three important functions that help the digestive system change food into a form that can be used by the cells.
1) It produces enzymes which help break down proteins, lipids, and carbohydrates.
2) It produces the hormone, insulin, which helps regulate blood glucose levels.
3) It produces sodium bicarbonate which helps to neutralize stomach acids.
Checking for Understanding.......
1. What is the function of the digestive system?
To change ingested food into a form that can be used by the cells, to get the nutrients into the blood stream, to reabsorb water, and to eliminate wastes.
2. What is the function of the following parts/organs of the digestive system?
a. mouth—houses teeth, salivary glands and tongue for mechanical and chemical digestion
b. teeth—chews, grinds, and tears food into smaller pieces
c. esophagus—food tube; leads from the pharynx to the stomach
d. stomach—
churns food to mix with gastric enzymes and acid to continue mechanical and chemical diges
When is the ground considered saturated?
A, when most of the space between rock particles is filled with water
B, when there is no space between any rock particles
C, when there are air pockets between rock particles
D, when all spaces between rock particles are filled with water
Answers
Answer:
b would be the correct answer
Explanation:
said it was when i looked it up
For each function listed, choose the correct macromolecule from the drop-down menu.
Store and transmit genetic information
Are primarily used to store energy
Help regulate cell processes
✔ Proteins
Are used for main source of energy
Answers
Answer:
Store and transmit genetic information: nucleic acid
Are primarily used to store energy: lipids
Help regulate cell processes: proteins
Are used for main source of energy: carbohydrates
Hope it help! have a great day!
- friend
Answer:store are used for main sources of energy
Explanation:
Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected?
Answers
Arrow 'f' releases carbon dioxide.
Answer:
F I think I am not sure though hope I helped.
Which best describes when the body is working on counteracting an effect?
when hormone levels in the body are all equal
during a negative feedback loop
during a positive feedback loop
when the hypothalamus is signaling the pituitary gland
Answers
The answer is a negative feedback loop. Negative feedback is used to counteract an effect and achieve back a homeostatic balance. An example of a negative feedback loop is in thermoregulation. When temperatures are too high, the hypothalamus induces body responses such as vasodilation and sweating that enable the loss of excess heat.
Highly organized systems like living cells should have _____.
a. High energy
b. High entropy
c. Low entropy
d. Low energy
Answers
How have electron microscopes helped our understanding of cells and cell processes?
Answers
Electron microscopes have greater magnification, resolution, and detail than light microscopes. As per the unified cell theory, all organisms are composed primarily of one or more cells, the cell is the basic unit of life, and new cells arise from extant cells.
What is an electron microscope?An electron microscope is a type of microscope that illuminates with a beam of accelerated electrons.
Electron microscopes have greater magnification, resolution, and detail than light microscopes.
As per the unified cell theory, all organisms are composed primarily of one or more cells, the cell is the basic unit of life, and new cells arise from extant cells.
Thus, electron microscopes helped scientists in many ways to understand cells and cell processes.
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Plant and animal cells are surrounded by a cell membrane, but only plant cells have a rigid ______.
Answers
Answer:
have a rigid Cell wall
Which is not a characteristic of an early succession plant?
A.) produces lots of seeds
B.) the seeds germinate best in shade
C.) small in size
D.) short-lived
Answers
Early succession plant has a characteristic of producing a lot of seeds, smaller size and short lived. Therefore, the correct statements are option A, option C and option D.
What are early succession plants?Early succession plants are plants that quickly adapts in areas that have been recently cleared and have harsh environments. These plants can easily grow in areas having low soil fertility, lack of water and high exposure to sunlight.
These plants produce a lot of seeds, are smaller in size, and short lived. High reproductive capacity, fast growth, tolerance to harsh conditions, short life cycles are other characteristics of an early succession plant.
Weeds like dandelions, annual rye grass and shrubs like fireweed are some of the examples of early succession plants. These plants have also the ability to fix nitrogen in the soil to improve the soil quality for plant growth. However, their seeds do not germinate best in shade.
Therefore, early succession plants produce lot of seeds, smaller in size and short lived.
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Explain how the brain regulates metabolism.
Answers
Answer:
The brain senses peripheral metabolic signals through hormones (insulin, leptin and so on) and nutrients (glucose, free fatty acids and so on) to regulate glucose metabolism. The sites of the convergence of these metabolic signals are the hypothalamus and brain stem
Suppose you were asked to research information about a potentially dangerous synthetic food product. How would you evaluate the credibility of the sources you found?
Answers
Animals use a variety of behaviors to increase the chance of survival for their offspring. Which also doubles as a territorial behavior?
A. Birds use nests to lay eggs and raise their young before they are ready to fly.
B. Sea turtles lay their eggs in sandy nests to keep them hidden from predators and to regulate their temperature.
C. Koalas and other marsupials carry their young on their bodies as they travel.
D. Bison travel in herds and surround calves when a predator is nearby in order to protect them from any attacks.
IM BRGGINH
Answers
How Natural Selection change in a population overtime? With white/speckled moths and black moths.
Answers
Use the drop-down menus to complete each statement._______ are used to measure distances north and south of the equator. Lines of longitude and latitude are measured in____________ . The prime meridian is located at___________ longitude. _____are not an equal distance apart; they get closer together as they reach the north and south poles.
Answers
Answer: Degree, Temperature,Longatuide
Explanation:
In this question, we filled in the blanks with information, about latitude and longitude.
Latitude and longitudeLatitudes are used to measure distances north and south of the equator. Lines of longitude and latitude are measured in degrees. The prime meridian is located at zero longitude. longitude are not an equal distance apart; they get closer together as they reach the north and south poles.
With this information, we can conclude that latitude is the distance from the equator measured along the Greenwich meridian. This distance is measured in degrees.
Learn more about Latitude in brainly.com/question/1383547
Using the information in this photo, what can MOST LIKELY be learned about the rocks in the illustration?
Answers
Answer:
they're old and someone should probably make that wall they're using look better by filling in the holes with cement or somethin.
Sammie is using radiocarbon dating to determine the age of a sample of objects. Which best explains why radiocarbon dating can be used to determine the accurate age of these items?
A. They contain radioactive isotopes that decay at a constant rate.
B. They are made primarily of radioactive carbon that is easy to detect.
C. They give off radioactive isotopes when an electrical charge is applied.
D. They have been exposed to large amounts of radioactivity in the atmosphere.
Answers
Answer: I think the correct answer is A or B.
Explanation: But i highly suggest B
Radiocarbon dating is a feasibe method because the isotopes involved decay at a constant rate.
What is radiocarbon dating?The term radiocarbon dating refers to the use of carbon in the establishment of the age of a sample. This is usually done by the use of carbon -14 isotope.
The reason why radiocarbon dating can be used to determine the accurate age of these items is that they contain radioactive isotopes that decay at a constant rate.
Learn more about isotopes: https://brainly.com/question/365923
Science is painful I will give brainily to the correct answer :D
Answers
Answer:
a
Explanation:
Answer:
Bacteria are classified as prokaryotes because they lack a nucleus and membrane-bound organelles.
Explanation:
Really hope this helps!
Why is boiling water a physical change?
The process creates a new substance.
The process releases energy.
The process can be reversed.
The process moves atoms into permanent places.
Answers
Answer:
the process creates a new substance
Explanation:
Now during boiling, water changes from liquid to gaseous state. Hence it is a physical state
i dont under stand this can someone plz help?
Answers
HELP ASAP PLEASE
Use the following sentence to answer the question.
Opossums are omnivores who eat at night.
Which of the following tells what part of the food chain opossums belong to?
A. Opossums are secondary consumers.
B. Opossums are primary consumers.
C. Opossums are producers.
D. Opossums are decomposers.
Answers
Answer:
B,
Explanation:
Infectious Disease Investigation
The students are to investigate an infectious disease.
They will choose a specific infectious disease, such as the flu, common cold, or
COVID-19, and research its causes, symptoms, and preventive measures.
Students are to create informative posters or presentations about the disease,
including its transmission methods and ways to protect oneself from infection.
They will explain the importance of personal hygiene and vaccination in preventing
the spread of infectious diseases.
Following the summer vacation, the students will be given an opportunity to present
their findings to the class or organize an "Infectious Disease Awareness Campaign"
where they can share their posters or presentations with their peers.
Answers
Answer:
The common cold is an illness affecting your nose and throat. Most often, it's harmless, but it might not feel that way. Germs called viruses cause a common cold.
Often, adults may have two or three colds each year. Infants and young children may have colds more often
place the parts of the human circulatory system in order from highest to lowest degree of internal organization
Answers
Answer:
READ ALL OF THIS! Cell, tissue, organ and system.
Explanation:
Cells? Are produced to form tissue and A tissue needs to exist to make up Organs.
the highest level of organization is biosphere, It encompasses all of the others.
Please tell me if i'm correct!
What is a runoff??
A-the vapor that is created when the sun's heat warms the Earth's surface
B-
the excess water that isn't absorbed into the ground after it rains
C- water that is absorbed into the ground and collects in rocks and soil
D-water droplets that combine to form clouds
Thanks!! =)
Answers
Answer:
Your answer is B) Excess water that isn't absorbed into the ground after it rains
Answer:
B
Explanation:
its common sense. Its not A. its not C. Its not D. its B
answer the question down below
Answers
Answer: 2) MERCURY
Explanation:
Ethanol has the lowest at 0.789 g/mL.
Mercury has the highest at 13.6 g/mL.
Benzene has is in the middle at 0.874 g/mL .