4. A scientist is observing living Cells in a Petri Dish under a Compound Light Microscope and recorded their
observations. Which of these observations provides evidence to support one of three components of "The Cell
Theory?" (SC.6.L.14.2)
a. Each Cell is spherical in shape.
b. Cells appear pink in color under the Microscope.
c. The sample of Cells require a nutrient broth as a food source.
d. Several Cells are in the process of dividing into two new Cells.
Answer:
D. Several cells are in the process of dividing into two new cells
Explanation:
The universal cell theory which was proposed in 1838 and contributed by three scientists namely: Theodor Schwann, Rudolf Virchow, and Mathias Schleiden, consists of three components namely:
1) Cell is the basic and functional unit of life
2) All living organisms are made up of one or more cells.
3) All existing cells arise from pre-existing cells.
Hence, in this question involving a scientist who is observing living Cells in a Petri Dish under a Compound Light Microscope, the observation that "Several cells are in the process of dividing into two new cells" provides evidence to support one of the three components of the cell theory ( all living cells arise from preexisting cells).
What items are in the niche of a bear?
Answer:
Black bears feeding niche is quite varied. A black bear eats all sorts of plants and plant material, nuts, all sorts of berries and meat. They have long sharp claws which help them rake the soil to find food and roots. Almost eighty percent of their diet consist of plant material while the rest is animal protein.
Explanation:
What place is most likely to contain fossils?
A. riverbed
B. Hawaiian Islands
C. Mt.St. Helen's
D. Meteor Crater in Arizona
Answer:
A a riverbed because of how many animals go in and out to drink water
Explanation:
I was the maiden who was loved by Zeus. I was transformed into a heifer so that Hera wouldn’t find me. What moon am I?
Answer:
Io.
The moon Io is one of the 4 Jovian moons seen in Galileo's telescope. It is covered with volcanoes. It is named after a Greek god's girlfriend who was turned into a heifer (cow). Hope this helped :)
The statement "I was the maiden who was loved by Zeus, was transformed into a heifer so that Hera wouldn’t find me," is the moon named as Io, a figure in Greek mythology, and it was discovered by Galileo Galilei in 1610 and is named after the mythological character.
What are jupiter's moons?
Io is one of the four largest moons of Jupiter and the fourth largest moon in the solar system. It is named after the mythological character Io from Greek mythology, who was a priestess of Hera and was transformed into a heifer by Zeus to protect her from Hera's jealousy. Io is known for its intense geologic activity, with over 400 active volcanoes and volcanic plumes that can reach heights of over 300 kilometers (190 miles) above the surface. The high levels of volcanic activity are due to tidal forces from Jupiter and its other large moons.
Hence, the correct answer is Io, a figure in Greek mythology, as it was the moon discovered by Galileo Galilei in 1610 and is named after the mythological character.
Learn more about the jupiter's moons here.
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HELP QUICKLY which of the following is a characteristic of a postmodern society
a. industrialization
b. jobs that require computers
c. some technology
d all of the above
Answer:
Jobs that require computers
Explanation:
I got it wrong
ways of conserving soil fertility
Deforestation effects soil quality and desertification will also effect the soils fertility. hope this helps :)
Answer:
ways we can conserve soil fertility include crop rotation, cover crops, conservation tillage and planted windbreaks, affect both erosion and fertility.
Explanation:
Which statement best summarizes the importance of meiosis to reproduction?
Your answer would most likely be: C. It produces gametes that are needed for sexual reproduction.
I hope this helped you out a bit :)
List the 2 Sources of Energy for Living Organisms.
Answer:
The Sun is a source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter.
1. Analyze the picture below. The answer the questions that follow.
2mm
• What is the diameter of the field of view in millimeters (mm)?
What is the diameter of the field of view in micrometers (um)?
• How many cells are lined up across the field of view?
Calculate the length of just one cell in micrometers by using the formula below. Show work
in the box below. Circle your answer. Make sure you include units.
Diameter of field of view
Number of cells across
Answer:
press dat crown for meh
Explanation:
The kind of bond that lipids won’t form with water is a _ _ _ _ _ _ _ _ bond.
What goes in the blank spot?
Brainliest!
100 g of a mystery metal at 250 C is added to 400 mL of water at 15 C. The final temperature of the system is 15.9 C. What is the heat capacity
of the mystery metal?
(PLEASE HELP need the answer by 10/21/20
11:00pm)
Answer:
c = 0.064 j/g.°C
Explanation:
Given data:
Mass of metal = 100 g
Initial temperature of metal = 250°C
Volume of water = 400 mL
Initial temperature of water = 15°C
Final temperature = 15.9°C
Heat capacity of metal = ?
Solution:
First of all we will calculate the heat lost by metal into water.
ΔT= 15.9°C - 15°C
ΔT= 0.9 °C
q = mcΔT
q = 400 g× 4.184 j/g.°C × 0.9 °C
q = 1506.24 j
Specific heat capacity of meta;
ΔT = 15.9°C - 250°C
ΔT = -234.1 °C
q = mcΔT
-1506.24 j = 100 g× c × -234.1 °C
(negative sign with q value indicate heat is lost by metal)
-1506.24 j = -23410 g.°C × c
c = -1506.24 j /-23410 g.°C
c = 0.064 j/g.°C
what would happen is there was a change in the DNA ?
Answer: B) the protein would also change
A model of an atom includes red marbles for electrons, green marbles for protons, and blue marbles for neutrons. All marbles have a radius of 2 cm. How could the model be changed to represent more properties of an atom?
Answer: Change the electron radius.
Explanation:
This would be a more accurate representation because electrons are the smallest particles.
Select all the correct answers. In the diagram, the Sun, Earth, and Moon are in perfect alignment. Which two conclusions can be drawn based on the diagram? a diagram showing Earth between the Sun and Moon and casting a shadow on the Moon; Remove the text "Figure 1" and use upper and lower text: Sun, Earth, Moon, Earth's shadow.
Answer:
In the diagram, the Sun, Earth, and Moon are in perfect alignment. Which two conclusions can be drawn based on the diagram?
A diagram showing Earth between the Sun and Moon and casting a shadow on the Moon; Remove the text "Figure 1" and use upper and lower text: Sun, Earth, Moon, Earth's shadow.
[ ] An observer on the Moon sees a solar eclipse.
[ ] An observer on the Moon sees a lunar eclipse.
[ ] An observer on the Moon sees a partial eclipse.
[ ] An observer on Earth sees a lunar eclipse.
[ ] An observer on Earth sees a solar eclipse.
Explanation:
1 and 4 are correct:
[X] An observer on the Moon sees a solar eclipse.
[ ] An observer on the Moon sees a lunar eclipse.
[ ] An observer on the Moon sees a partial eclipse.
[X] An observer on Earth sees a lunar eclipse.
[ ] An observer on Earth sees a solar eclipse.
Answer:
1. An observer on the moon sees a solar eclipse
4. An observer on earth sees a lunar eclipse
Explanation:
this is correct for Plato/edmentum
Which of the following describe How Chowking could lead to death? The
It will block your air passage like nose and mouth
_________are organisms capable of transforming one
form of energy (light energy or chemical energy) into the food
they need to do work.
Answer:
Producers/Autotrophs
Explanation:
Using carbon dioxide and water, plants convert carbon dioxide into glucose, and water into oxygen with the help of light energy to provide food for themselves. In a process called photosynthesis.
The organism that is capable of transferring one form of energy, which is light energy, to chemical energy, which is food, is the photoautotroph. These are the producers in the ecosystem, such as the plants.
What is the role of the photoautotroph?Every ecosystem contains some form of photoautotroph, such as land plants present in the terrestrial ecosystem, phytoplankton present in the aquatic ecosystem, etc. The photoautotrophs have special cell organelles, such as the chloroplasts, that carry out the conversion process of the light energy into chemical energy by the different complexes present in the thylakoid. ATP is formed during the photosynthesis process, and the carbon level in the atmosphere decreases as the plant uses it for this process.
Hence, the organism that is capable of transferring one form of energy, which is light energy, to chemical energy, which is food, is the photoautotroph. These are the producers in the ecosystem.
Learn more about the photoautotroph here.
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Science help PLZZZ!!!
Answer: b
Explanation:
Answer: B.
Explanation: Light cannot pass through an opaque object.
Evan's nightly chores include washing dishes. His mother cooks everything she prepares a bit too long. Because of this, Evan spends a lot of sweat, effort, and time washing dishes. He sees a commercial on television that claims a new dishwashing detergent, called Brand X, cuts through grease better than its competitor, called Brand Y. They back up their claim with testimonials from people who say they've used this new detergent.
What is a possible testable question (in correct format) that Evan might ask for in this scenario?
IV:
DV:
Answer:
product X and Y need to be in a controlled test to make see how they do undergoing the same things.
hope this helps :)
Explanation:
plewaseee helppppppppppp For sediment to be transformed into rock, which set of processes must take place?
crystallization and solidification
weathering and erosion
compaction and cementation
melting and spreading
Answer:
I am pretty sure it is B, weathering and erosion. Hope this helps!
Answer:
I’m not fully sure but I think it’s c, crystallization & solidification
hope this helps
Why is mitochondria regarded as power House of the cell.
Why is chromosome responsible for transmission of traits.
Answer:
Mitochondria are known as the powerhouse of the cell because it is responsible for the extracting energy from food through cellular respiration. The energy is released in the form of adenosine triphosphate (ATP) it is an energy currency of the cell.
Explanation:
Which of these events happens immediately before cell division occurs?
A. The cell's DNA is distributed evenly throughout the cell.
B. The cell's surface-area-to-volume ratio increases.
C. The cell's volume decreases more than its surface area.
D. The cell's genetic material is copied.
Answer:D. The cell's genetic material is copied.
Explanation:because is right !:}--->:)>
What kind of bond does water have
A. positive
B. negative
C. Covalent
D. Non-polar
Answer:
C. Covalent
I hope this helps!
How far does an animal have to travel to obtain the abiotic factor water?
Answer:
Three fourth of the total earth is covered with water, 97 percent of which is there in sea's as saline water, the other 2 percent is there in the form of glaciers and the left out 1 percent is there as ground water.
Water is presence is abundance but it depends upon the geographical location where the animal is looking for water. There will be scarcity of water in the deserts because there is less rainfall over there, so it depends on the geographical location.
_____ is a type of ecological
succession that occurs on bare
ground without soil.
A. Secondary succession
B. Primary succession
C. Tertiary succession
Answer:
Your answer is: B) Primary Succession
Explanation:
Hope this helped : )
Why does DNA need to be extracted from a cell before it can be analyzed?
Answer:
to study the genetic causes of disease and for the development of diagnostics and drugs.
Explanation:
It is important to extract DNA from a cell in order to study the genetic causes of disease and for the development of diagnostic and drugs. Scientists will use a cell culture system, which is cells from an organism that have either been made to continuously proliferate (grow) or are cancerous in nature (from cancer).
These cells allow us to continue working on experiments where we can change the conditions to determine various cell functions.
For each missing word or phrase, circle the choice that correctly completes the
sentence
The Devil's Hole water system is part of a large underground aquifer in Death
Valley National Park. After the last lce Age, around 10,000 years ago, as the
water dried up and the land tumed to desert, separate pools of water formed.
(Biomes / Species / Populations) of pupfish eventually became isolated in a
few of these water holes and springs and then evolved different (adaptive /
disruptive / stabilizing) traits to become distinct species over time. This kind of
(polygenic drift / genetic drift / environmental effect) likely occurred because
each water pool was inhabited by a few surviving individuals of the original larger
population. A change in (habitat conditions /
genetic equilibrium / allele frequency following a large reduction in
population size is called a (bottleneck effect/polvaenetic effect/
environmental effect)
Answer:
Biomes Adaptive Polygenic Drift Genetic Equilibrium Environmental Effect
Explanation:
Lit
correct answer gets brainly
Answer:
where's the work?
Explanation:
Question:
correct answer gets brainly
Explanation:
Well, I'm not sure what it would be.
_______ laws of motion explained Kepler's proposal of elliptical orbits.
Answer:
newtons
Explanation:
Answer:
True
Explanation:
It's correct
Which of the following represents the phases of mitosis in their proper sequence?
Answer:
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase).
Why do scientists use a single system of units?
A. Scientists use a single system to prevent miscommunication.
B. Scientists have their favorite forms of units.
C. One scientists might have a better measurement than the other.
D. Scientists don't make enough measurements to need more then one system.
Answer:
The answer is A
Explanation: When it comes to using different types of units rather it is SI or NM they want to make sure they got the measurements right they don't want any mistakes when it comes to creating an experiment, data and report that can lead to a lot of miscommunication with other professional scientists. The other answers provided on here didn't really make sense so I believe the answer to this is A
