Answer:
An open system can exchange both energy and matter with its surroundings. The stovetop example would be an open system, because heat and water vapor can be lost to the air. A closed system, on the other hand, can exchange only energy with its surroundings, not matter.
Explanation:
What are the two leading causes of CO2 being in the atmosphere?
What do seals and birds have in common in the food web?
Answer:
Well.
Explanation:
Well, for the most part, both seals and birds eat fish.
And, both seals and birds get eaten by sharks.
Focus Question: Which tissue sample is
the best for absorption and why?
please help me this is one of my missing assignments
Answer:
Epitheial tissue
Explanation:
You are looking through a light microscope with a 10x eyepiece trying to determine what type of cells you are seeing. You can only see individual cells with 100x total magnification. What type of cell is it and how much detail would you expect to see?
A=Prokaryotic cell, very little detail
B=Prokaryotic cell, much detail
C=Eukaryotic cell, very little detail
D=Eukaryotic cell, much detail
Answer:
Either A or B
Explanation:
Prokaryotic cells are unicellular.
At 100x total magnification, we would see eukaryotic cells with very little detail. So the correct option is C.
What is magnification?The ratio of the size of the image of an object to the actual size of an object in a plane perpendicular to the optical axis is referred to as magnification.
If the value of the linear magnification is negative, the image formed will be invested. If the value of the linear magnification is positive, the image will be erect.
The magnification of a microscope is calculated as the magnifying power of the objective lens and the eyepiece lens. This is called the total magnification of the microscope.
Now, the total magnification is 100x, and the magnification of the eyepiece lens of 10x.
Let the magnification of the objective lens be y.
10x × y = 100x
y = 100x / 10x
y = 10x
So, an objective lens at 10x is used to observe the eukaryotic cell with very little detail.
Therefore, the correct option is C.
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How does each organism’s niche and habitat play a part in each type of symbiosis?
Answer:
The answer is B
Explanation:
I know it's B because I did this question before.
hope this helps :)
How many different ELEMENTS are in Na2SO4?
A.)1
B.)3
C.)6
D.)7
Answer:
D, 7
Explanation:
In one molecule of sodium sulfate, or Na2 SO4, there are seven atoms in all. The chemical formula for this molecule tells us this.
Analyze reasons for water’s polarity and the effect of polarity.
12. Which area of deep ocean research provides the most economic
benefit?
a sea-floor spreading
b. oil resource
C.new habitats
d hydropower
Answer: Oil resources
Explanation:hope this helps and happy early hallowen :D
The pictures below show a hot spring and a geyser.
image on the left is a hotspring, image on the right is a geyser
Which of these statements is correct about the hot spring and geyser shown in the pictures?
Both are formed when the groundwater erodes limestone.
Both are formed when the groundwater gets heated.
The hot spring is formed by the heating of groundwater and the geyser is formed by the erosion of limestone by groundwater.
The hot spring is formed by the erosion of limestone by groundwater and the geyser is formed by the heating of groundwater.
Answer:
Both are formed when the groundwater gets heated
Explanation:
This is correctamundo
"why?"- you ask
well because when groundwater gets all hot and worked up we get a result in the form of geysers and hotsprings!
Have a great day and wash your hands and STOP TOUCHING YOUR FACE!
jk haha- please don't be take this seriously good day to you all!
Answer:
B. Both are formed when the groundwater gets heated.
Explanation:
Hot springs and geysers are very similar when it comes to how they are formed. The obvious difference is that geysers force up jets of water, whilst hot springs flow water out on their own. They are both formed when the groundwater gets heated from molten rock(magma).
This is reliable because I took the same quiz and got the question right.
Which of the following is not a characteristic of enzymes?
F
they are proteins
G
they act as a catalyst
H
they react with a specific substrate
they are unaffected by changes in temperature
J
they are unaffected by changes in temperature
Answer:
they are unaffected by changes in temperature. t
Explanation:
that's the answer J. u kinda wrote it in two places.
All lipids (Fats) contain the following elements except:
A, Nitrogen
B, Oxygen
C, Carbon
D, Hydrogen
Why does ice have the lowest density?
Answer:
Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.
Kelly walked through this part of the forest. What phase changes happened as the water moved from the oceans to the forest to Kelly's head?
please help me asap
Answer:
Explanation:
It changed from liquid to gas to liquidity
In which layer of Earth can a garden and rocks he found?
A. Exosphere
B. Hydrosphere
C. Lithosphere
D. Stratosphere
What is the function of a cell membrane?
Answer:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Explanation:
Which event or principle CANNOT have its validity directly tested by laboratory experiment?
Select one:
a. the big bang theory
b. the conservation of energy
c. the periodicity of element properties
d. the acceleration of objects due to gravity
1. Angiosperms ensure the transfer of gametes through structures called _____________________.
what is the function of centiroles?
Answer:
Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.
Explanation:
Answer:
Explanation:
Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.
An example of mitosis at work is a leaf...
turning yellow.
growing.
taking in carbon dioxide.
performing photosynthesis.
Answer:
growing
Explanation:
bc back earlier in the chapter it said growing reproducing and healing is all part of mitosis
An example of mitosis at work is a leaf growing which is denoted as option B.
What is Mitosis?
This is the type of cell division in which parent cells give rise to two identical daughter cells.
This cell division is common during growth and in the replacement of worn out tissues in organisms.
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Which of the following is an example of an organism growing developing?
Answer:
A frog and humans
Explanation:
A frog develops and changes during its lifecycle,also a human thy grow as they age.
What is 'b' in this linear equation? y = 5x - 6
How many times farther from the Sun is Uranus (distance = 19.20 AU) than Saturn (distance = 9.58 AU)?
Answer:
Water is a polar molecule because one area is ________________ and another area is ______________________.
Explanation:
Uranus is approximately 2 times farther from the Sun than Saturn.
What is Uranus?Uranus is a planet in our solar system, orbiting the Sun at an average distance of about 1.8 billion miles (2.9 billion kilometers) or 19.2 astronomical units (AU). It is the seventh planet from the Sun and the third-largest planet in our solar system, with a diameter of about 31,518 miles (50,724 kilometers).
The distance from the Sun to Uranus is 19.20 astronomical units (AU), and the distance from the Sun to Saturn is 9.58 AU. To find how many times farther Uranus is from the Sun than Saturn, we can divide the distance to Uranus by the distance to Saturn:
distance to Uranus / distance to Saturn = 19.20 AU / 9.58 AU = 2.00
Therefore, Uranus is approximately 2 times farther from the Sun than Saturn.
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2. True or False
Only people who wore glasses as children need glasses for reading as they get older.
Answer:
false
Explanation:
I need help please! This is a question on genetics!
Explanation:
first - red
second- both red and pink
third - both red and pink
Given the formula D=M/V, a substance with a Density of 50 gm/cc, with a Volume of 10 cc, has a Mass of ___________
A
500 cc
B
250 cc
C
500 gm
D
500 cc
Answer:
A
500 cc
Explanation:
D= M/V
50 =M/10
M =50×10
=500 cc.
Hope it helped.
The nucleus or center area of the atom contains two kinds of subatomic particles. Which two?
Question 3 options:
protons and neutrons
protons and electrons
electrons and neutrons
protons only
Answer: Protons and Neutrons
Explanation:
Gorge and Hattie want to perform a set of experiments to test the optimal water and sunlight levels of a certain species of pea plant.
Gorge decides to test the amount of water that the species needs to thrive. He takes 24 pea plants and separates them into four equal groups and gives each group a different daily amount of water. He keeps all other environmental conditions the same for each group. He measures the initial height of all the pea plants and then measures their growth after one month.
Gorge averages the data from the individual pea plants and comes up with an average for each group, which he reports in the table below.
After Gorge's experiment is complete, Hattie decides to test the optimal sunlight exposure for this species. She takes 24 pea plants and separates them into four equal groups and exposes each group to a differing daily amount of sunlight. She keeps all other environmental conditions the same for each group, including giving each group 15 mL of water daily. She measures the initial height of all the pea plants and then measures their growth after one month.
Hattie averages the data from the individual pea plants and comes up with an average for each group, which she reports in the table below.
Which of the following conclusions can be made based on the results of these investigations?
A.
This species of pea plant grows best when given 15 mL of water and four hours of sunlight daily.
B.
This species of pea plant grows best when given 15 mL of water and three hours of sunlight daily.
C.
This species of pea plant grows best when given 5 mL of water and one hour of sunlight daily.
D.
This species of pea plant grows best when given 5 mL of water and four hours of sunlight daily.
Answer:
b
Explanation:
study island
Answer:
This species of pea plant grows best when given 15 mL of water and three hours of sunlight daily.
Explanation:
the other guy is WRONG, That is the REAL answer
if you could help me that would be awesome :)
Answer:
12) Solution
13) 0 to 6
14) H+(hydrogen) than OH-(Hydroxide)
15) 8-14
16) OH-(hydroxide) than H+(hydrogen)
Explanation:
A scientist uses electricity to break down water into hydrogen gas and oxygen gas. Which statement best explains what happens? A. A chemical change occurs. O B. A base neutralizes an acid. O c. An acid neutralizes a base. O D. A physical change occurs.
Answer:
A. A chemical change occurs.
Explanation:
Selectively permeable membranes are important in cell function. What makes a membrane selectively permeable?
A.The ability to remove bacteria from the cell
B.The ability to use energy to make proteins used in the cell
C.The ability to modify, sort and package proteins and lipids for storage or transport out of the cell
D.The ability to allow needed materials to enter and wastes to exit as well as the ability to block unneeded materials from entering the cell
The statement that makes a membrane selectively permeable is as follows:
The ability to allow needed materials to enter and wastes to exit as well as the ability to block unneeded materials from entering the cell.Thus, the correct option for this question is D.
What is a Selectively permeable membrane?A Selectively permeable membrane may be defined as a type of membrane that permits the entry of specific substances and the exit of a few substances but significantly prevents the transport of other substances through it.
This action of a selectively permeable membrane protects the cell from any unwanted impurities and damage. It also regulates the balance in the internal environment of the cell by the passage of toxic or unwanted substances outside the cell.
Therefore, the correct option for this question is D.
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