The researchers set up experimental and control microcosms, or small artificial ecosystems, to measure the release of minerals from rocks. First, they placed rock fragments of volcanic origin, either granite or andesite, into small glass containers. Then they made a suspension of water and macerated (chopped and crushed) moss of the species Physcomitrella patens. They added this mixture of water and moss to the experimental microcosms. For the control microcosms, they filtered out the moss and just added the water. After 130 days, they measured the amounts of various minerals found in the water in the control microcosms and in the water and moss in the experimental microcosms. How did the setup of the control and experimental microcosms differ

Answers

Answer 1

Answer:

The correct answer is - Control microcosms did not contain living moss, while experimental microcosms did contain living moss.

Explanation:

The difference between the control microcosms and experiment Microcosms is, the presence of the living moss in the experimental group whereas the control group does not contain living moss.

The independent variable in this research setting is the presence or absence of the living moss and for the control group, the mosses are filtered out and only added the water.


Related Questions

Which of the following is true of binary fission?
It produces two identical daughter cells.
It requires two gametes to fuse.
It only occurs in animal cells.
It is the result of sexual reproduction

Answers

Answer:

I THINK THIS IS NUMBER FOURRRRRRRR

Explanation:

All cells Maintain Homeostasis to survive what process do all cells perform to maintain Homeeostasis A. Meisios B. Nutrient production C. Photosynthesis D. Cellular transport

Answers

Answer:

I will think it's A. meiosis

Explanation:

Plz let me know if i am wrong

What would you need to do to your model to make it look like a true DNA molecule?

Answers

To make your double helix, twist your model slightly so the molecule forms a spiral. DNA molecules have a right handed helix shape that winds in one direction. You can figure out the direction by sliding the fingers of your right hand along the backbone.

Which of the following best describes the division of cytoplasm and the cell membrane?
a:Cytokinesis
b:Sister chromatid
c:Spindle fiber
d:Centromere

Answers

Answer:

A: Cytokinesis

Explanation:

the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.

Which organelle is responsible for making lipid molecules that will be used by the cell?

Smooth ER

Nucleus

Lysosome

Rough ER

Answers

The endoplasmic reticulum (ER) is a series of interconnected membranous sacs and tubules that collectively modifies proteins and synthesizes lipids. However, these two functions are performed in separate areas of the ER: the rough ER and the smooth ER.

Which best explains why the rate of a reaction decreases at significantly higher temperatures?

A. The activation energy increases.

B. The shape of the enzyme changes.

C. The enzyme-substrate complex forms.

D. The bonds between substrates are broken.

Answers

Answer:

B

Explanation:

At significantly higher temperatures, the rate of an enzyme-catalyzed reaction decreases because the shape of the enzyme changes at high temperatures. Enzymes are proteinous in nature, and as such, are generally sensitive to high temperatures.

They simply become denatured by high temperatures. In other words, they lose their original shape and their catalyzing abilities as the temperature gets progressively high during the course of reactions, thus, decreasing the rate of a reaction.

The correct option is, therefore, B.

2. Just as in humans, systems interact in plants to maintain homeostasis and accomplish the functions of transport, reproduction, and response. What are some examples of plant processes that involve an interaction between stems, roots, and leaves?

Answers

Answer:

osmosis

Explanation:

plants use osmosis whic is moving water though a semipermial membrane to draw up water.  It moves from places of high conetartions of water (dirt)  has to  is less water (roots). When it does this the plant mains homeostasis by getting water up useing their xylem (tubes in stems) to the leaves.

Plants use osmosis which is moving water though a semipermial membrane to draw up water.

What do you mean by osmosis?

Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane from a region of high water potential to a region of low water potential.

Osmosis is the movement of water across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration. Osmosis helps regulate the flow of water in and out of cells, which is crucial to their function.

The rate of osmosis always depends on the concentration of solute. The process is illustrated by comparing an environmental or external solution to the internal concentration found in the body.

Learn more about osmosis:

https://brainly.com/question/31028904

#SPJ3

A converging lens can be defined as ___
A) a lens that causes parallel light rays to bounce off the surface
B) a lens that causes parallel light rays to separate from each other
C) a lens that allows parallel light rays to pass without changing directions
And D) a lens that causes parallel light rays to focus at a specific location

Answers

Answer:

D) a lens that causes parallel light rays to focus at a specific location

Explanation:

Lexically, to CONVERGE means to MEET. Converging lens, also known as double convex lens is that which causes rays of parallel light to become focused at a point i.e meet at a specific location.

The parallel rays of light come from different direction but the converging lens is structurally suited to cause them to converge or focus at a point.

Type the correct answer in the box. Spell all words correctly.

Which fingerprint pattern does Sam have?

Sam's thumb print shows a flow of ridges that enters from one side and exits from the other side, with a gradual rise in the center.

Sam's fingerprint has the ______ pattern.

Answers

Answer:

Plain arch pattern

Explanation:

This is because the plain arches fingerprint is a form of finger print pattern create a type of wave like pattern that have Raised ridges and they extend from one side of the finger to the other in a form of continuous fashion. This pattern makes up of 5% of the total population. It is the rarest type of finger prints.

An additional layer of defense and maintains shape

Answers

Answer:

Prokaryotes have a cytoplasm, plasma membrane, DNA, and ribosomes, but no nucleus. They have a cell wall that offers an additional layer of protection, prevents dehydration and maintains the shape of the cell. The cell wall is made of peptidoglycan.

Explanation:

Your right to safety means consumers have the right to a variety of competitive products in the marketplace.

Answers

Answer:

Yes i believe this is true

Explanation:

How does blood help maintain the homeostasis in the body?

Answers

Answer:

Blood absorbs and distributes heat throughout the body. It helps to maintain homeostasis through the release or conservation of warmth. Blood vessels expand and contract when they react to outside organisms, such as bacteria, and to internal hormone and chemical changes.

Answer:

Blood absorbs and distributes heat throughout the body. It helps to maintain homeostasis through the release or conservation of warmth. Blood vessels expand and contract when they react to outside organisms, such as bacteria, and to internal hormone and chemical changes.

Explanation:

Which is the most specific group? *
A. Genus
B. Family
C. Order
D. Phylum

Answers

Answer: genus

Explanation:

C because it is used to identify the organisms

how transcription makes mRNA?

PLS ANSWER I REALLY NEED TO PASS MY THIS CLASS

Answers

Answer:

yehhhhhhhhhhhhhhhhhhhhhhhhh

Explanation:

can you answer all these pls​

Answers

Answer:

lol

Explanation:

xd

1 ) glucose + oxygen -> carbon dioxide + water
2) glucose + lactic acid
3) glucose is completely broken down...
4) mitochondria

what can the reader conclude about ecosystems based on the information of this passage

Answers

Answer: Ecosystems are so developing entities of biological communities

Explanation:

If someone crosses the black cat (BB or Bb) with white cat (bb) and 50 percent of the offspring are black, what is genotype of the black cat ?

Answers

The cat is bbbbbbbbbbbbb

Answer:

this cat is Bb

Explanation:

Which organism would require cell differentiation?
O amoeba
O bacteria
cactus
O euglena

Answers

Answer:

bacteria

Explanation:

for such unicellular organisms like bacteria, various life functions occur witha single life

Why do geologists think Earth's core contains mostly iron?
A. The crust contains a mixture of iron and silicon.
B. The crust contains no nickel.
C. Other orbiting bodies contain more iron than Earth's crust does.
O D. The moon's crust contains far less iron than Earth's crust.

Answers

Answer:

It should be D

Explanation:

I hope this helps! Let me know if I am wrong.

The geologists think Earth's core contains mostly iron is to be considered as the option c. Other orbiting bodies.

Reason for thinking of geologists:

Here the thinking should be earth core that comprises iron since the earth should contain the powerful magnetic field that is due to the molten iron in the core.

Also, there should be constant movement leads to the electrical current.

hence, the option c is correct.

Learn more about iron here: https://brainly.com/question/16714091

help.........................................

Answers

Answer:

the third option

Explanation:

The electron transport process makes water and ATP and is sometimes called because it requires oxygen

Answers

Answer:

Oxidative Phosphorylation

Explanation:

I took the quiz and got it right!

Which of the following is NOT in part of the natural selection process?

A. a species produces more offspring than can survive
B. an organism adapts to their environment causing variation
C. individuals competing with each other
D. fossils being formed

Answers

Answer:

the selection that is not a natural selection process is D: fossils being formed

Answer:

D. Fossils being formed

Explanation:

In the natural selection process, the point is that the animal which is best adapted to the environment survives, so their offspring can survive and produce more offspring that adapts. This is because organisms need to adapt to their environment to survive. Without natural selection, most animals would be too weak to live in their own habitat.

So when we see the answer choices, we have to ask if the species could continue to live and adapt.

A- the species produces more offspring that can survive. Yes, the species can continue to live and adapt.

B- an organism adapts to their environment. Yes, the species can continue to live and adapt.

C- individuals competing with each other. Yes, the better species will win, and continue to live and adapt

D- fossils being formed. No, this has nothing to do with the process of living and adapting. It is in fact the opposite, since it relates to the species dying.

So the answer is D

*PLEASE ANSWERRR !!!
In which lower layer of the ocean do anglerfish live?

a.) hadeopelagic

b.) abyssopelagic

c.) mesopelagic

Answers

Answer:

they live in bathypelagic layer. is there another answer choice that says that?

Explanation:

Answer: abyssopelagic

Explanation:

DNA is always tuned on all the time in all of your cells true or false

Answers

The answer for this is true :)

Answer:

true

Explanation:

i just did this last period

Lucas is carrying his rock collection into class. He carries 30 pounds of rare rocks 15 feet into Classroom 6. It takes him 3 minutes to get them into the classroom. What is Lucas's speed and how much work is done? Be sure to show your work with equations as part of your answer.

Answers

Answer:

450

Explanation:

You would multiply 30 by 15 then you will get your answer hope this helps

Answer:

work= 30 x 15

work= 450

foot pound

speed= distance/ time

speed= 15/3

speed= 5 ft per minute

4. How can different species of insect-eating birds live in the same tree?

Answers

Answer:

How can different species of insect-eating birds live in the same tree? The competitive exclusion principle explains the no two species can have the same niche in the same habitat; hence, each species eat different food types and they obtain it in various ways.

Explanation:

A change in a person’s environment that is received by their nervous system

In the nervous system, a neural message is known as an ___________________.

Answers

Answer:

sorry I need points heheyehueueurhebebrbrrh

Explain why the external eye muscle can be
considered the muscle with the greatest dynamic
strength.
DONE

Answers

Answer:

that the answer

Explanation:

can you help me with my question In the extended simile of the underlined passage from Paragraph 15 of "A Wagner Matinee," the narrator makes an observation about the soul that aring rokol been A. it is like a strange moss on a dusty shelf that, with excruciating suffering, can wither and die y for I the be B though after excruciating suffering it may seem to wither, the soul never dies, C. excruciating, interminable suffering that goes on for half a century can kill the soul.

Answer:

moves to readjust the eye position and it moves constantly to maintain a steady point of fixation

Explanation:

trust me

why decomposers play an important role in ecosystem​

Answers

Answer:

They break down the bodies of dead organisms, to return the nutrients back into the soil

Answer:

They break down the bodies of dead organisms, to return the nutrients back into the soil

Explanation:

What is one example of how it takes energy for motion to occur?

Answers

Answer:

Lets say you are running in P.E. If you run for to long you get tired. When you are tired you run out of energy and cant run anymore.

Explanation:

Take example for fan

You give electrical energyThat energy gets used by fanThen fan runs and creates a motion

There can be further more examples like pumps,heaters ,AC

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