Answer:
The Purple Sea Urchin obtains oxygen through diffusion only the diffusion of oxygen into the organism. Also, oxygen diffuses from the canals into the rest of the body and carbon dioxide diffuses back into the canals to be released.
Explanation:
:)
The Purple Sea Urchin obtains oxygen through diffusion only the diffusion of oxygen into the organism. Also, oxygen diffuses from the canals into the rest of the body and carbon dioxide diffuses back into the canals to be released.
What is the best example of a hypothesis leading to new experimental methods?The best example of a hypothesis leading to new experimental methods as the Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.
The best example of a hypothesis leading to new experimental methods is that the Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.
Through Thomas Hunt Morgan's fruit fly experiments, he was able to discover and notice the inheritance of specific chromosomes. This experiment gave Mendel a great opportunity to publicize his idea of studying humans.
Therefore, The Purple Sea Urchin obtains oxygen through diffusion only the diffusion of oxygen into the organism. Also, oxygen diffuses from the canals into the rest of the body and carbon dioxide diffuses back into the canals to be released.
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I’ll mark as BRANLIEST!!
30 POINTS!!
Please help me!!
Answer:
They are complimentary DNA strands of each other
I remember them via AT (AT-AT from Star Wars and this gets you 2 H bonds) and CG (cross guard light saber, the ridiculous one with the helm of the sword having it's own light saber so it is crossed and has 3 H bonds). Ridiculous makes things more memorable imo.
Explanation:
how would you describe what the cells of each stage of the cycle look like ? what are the visible features of the cells.
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis
Interphase:
Is known as the resting stage. Replication of DNA occurs.
- G1
-S
-G2
Prophase:
The chromosomes are visible, centrioles are formed and begin to move to opposite sides. This is where you see the dissolving of the nuclear membrane.
Metaphase:
The chromosomes line up in the centre of the cell.
Anaphase:
This when the cell divides (should look like two circles splitting) you will see the spindles begin to shorten which pull chromatids apart.
Telophase:
The nuclear membrane is reformed.
Hope this helps (:
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If a DNA molecule is 24% Thymine, which one of these is correct?
A. Adenine is also 24%, Cytosine is 26%
B. Cytosine and Guanine have a total of 48%
C.Guanine is 26% and Cytosine is 24%
D. A and B are correct
Answer:
D
Explanation:
D is the correct answer i think and I'm sorry if it's not
PLEASE ANSWER I'll love you forever
which structure is represented by letter b
A.ribosome
B. tRNA
C.Nucleus
Answer:
the leeter b is sturcture by option A:ribosome
Haploid sperm and egg are produced via meiosis. What process is responsible fro producing the 2N zygote?
A. Differentiation
B. Fertilization
C. Replication
D. Transcription
Answer:
Explanation:poda
Answer:
c
Explanation:
How are the properties of water
essential to life on Earth?
Explanation:
water is essential for all living things. Water's unique density, high specific heat, cohesion, adhesion, and solvent abilities allow it to support life.
This soil sample is the LEAST porous?
True or false
Answer:
False
Explanation:
Soil with least porosity
Thus, the correct answer is 'Clay soil. '
There are other types of soil that can be more crumbly, but this is not the least. Because porous means something is full of tiny holes or openings, you can see that this is the right word to match it with! The least crumbly, or porous would only have a little crack. Good luck, and I hope this helped!
Also....
Clayey soil is the least porous.
Clayey soil is the least porous soil as the spaces between the molecules of the soil is less and water cannot pass through them.
What was the Scientific Revolution of the mid-1500s and 1600s? What is the scientific method? List the major steps of the scientific method. What are the lasting consequences of the scientific revolution?
Answer:
Question: What was the Scientific Revolution of the mid-1500s and 1600s?
Answer: Before the mid-1500s and 1600s, Scientists feed on ancient scholars scientific materials and what the church explains through the Bible of how God created the universe and the people that lived in the world. The interest people have to observe their natural environments, coupled with the rise of more educated scientists led to the Scientific Revolution which uses observation of the natural world, experimentation, and a well-followed scientific method to discover the world.
Question: What is the scientific method?
Answer: During the mid-1500s and 1600s scientists developed a method called the scientific method with the aim to lay emphasis on observing the natural world and experimentation to test hypothesis. Making them start thinking like scientists instead of accepting unproven theories.
Question: List the major steps of the scientific method.
Answer:
1. Observation
2. Experimentation
3. Logical Ideas
4. Hypothesis
Question: What are the lasting consequences of the scientific revolution?
Answer:
1. It shaped the way people think and make people question and observe their environments.
2. It embraces the acceptance of proven and tested theories rather than some mystical beliefs.
A cell that is placed in distilled (plain) water will swell up because it fills
with water. Which process causes the cell to swell?
Answer:
If a cell is placed in a hypotonic solution, water will move into the cell. This causes the cell to swell, and it may even burst. A hypertonic solution means the environment outside of the cell has more dissolved material than inside of the cell. If a cell is placed in a hypertonic solution, water will leave the cell.
Explanation:
I hope this helps! ^^
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what is the cell theory
Answer:
a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter
PLEASE HELP I WILL GIVE BRAINALIST
Answer:
I think your answer is B).
Answer:
B An docrcase in water temperature
Which is a carbohydrate monomer
O glucose
O sucrose
O glucagon
O glycogen
Answer:
sucrose
\
Explanation:
whats the structure of cerebrospinal fluid
Answer:
Cerebrospinal fluid (CSF) is a clear, colourless ultrafiltrate of plasma with low protein content and few cells.
Explanation:
The CSF is mainly produced by the choroid plexus, but also by the ependymal lining cells of the brain's ventricular system.
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
The Ring of Fire or also known as the Circum-Pacific Belt
Hope that helps!
Answer:
the circum-pacific system A surrounds the pacific ocean.
Explanation:
Which two characteristics describe organisms in the kingdom Animalia?
A. They are heterotrophic
B.They are unicellular
C. They are multicellular
D.They have prokaryotic cells
This is a multi (two) answer
Answer:A and C
Explanation:
Answer:
A and C
Explanation:
All members of Animalia are multicellular, and all are heterotrophs (that is, they rely directly or indirectly on other organisms for their nourishment). Most ingest food and digest it in an internal cavity. Animal cells lack the rigid cell walls that characterize plant cells.
I also did the test and got it right.
How do keystone species shape communities?
Explanation:
A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them—sea urchins, sea snails, limpets, and bivalves.
Answer:
By keeping populations of mussels and barnacles in check
proteins are made at the ?blank
Answer:
below
Explanation: Ribosomes cell
What issue might be present in the soil if the ration to Nitrogen (N), Phosphate (P)
and Potassium (K) are sufficient, but the leaves of a
plant are showing phosphate and potassium deficiency?
Answer:
Low level of nitrogen in the soil.
Adding organic materials poor in mineral nitrogen to the soil, which encourages the subsistence of soil microorganisms on mineral nitrogen to break down these materials, and this causes a temporary reduction in the proportion of mineral nitrogen in the soil.
Soil drought.
Problems with root growth due to soil compression or disease.
Do you believe in evolution? , why or why not?
Answer: No, I don’t believe in evolution, I *KNOW* that evolution is a fact because THOUSANDS of scientists over the past couple of centuries have built up a body of evidence which makes the theory of evolution one of the best supported theories in all of science. -quora (not made by me its just to help u out)
The instructions, or 'code', in our DNA is dependent upon the order of the _____ in the DNA
-phosphates
-proteins
-bases
- sugars
Answer:
C. Bases
Explanation:
Deoxyribonucleic acid, commonly known as DNA, is the a type of nucleic acid that serves as the genetic material in living organisms. DNA holds information or instructions needed for the synthesis of useful products like proteins that is responsible for growth, reproduction, and general survival of organisms. Hence, it is referred to as the "BLUEPRINT OF LIFE".
However, in the structure the of the DNA molecule, it contains certain monomeric building blocks called NUCLEOTIDES. These nucleotide bases are of four types namely: Adenine, Thymine, Guanine and Cytosine. It is upon these order of nucleotide bases that instructions, or 'code', in our DNA is dependent upon.
Why would plant cells become wilted in a concentrated sugar solution?
A:They lose water by osmosis
B:They are not receiving enough light
C:They lose water by active transport
D:They gain water by osmosis
ice floats on water because ice is less dense than water, how is this helpful to fish tnat live in a lake
What characteristic have helped humans survive major changes in the environment? the ability to adapt to new conditions the ability to outsmart predators the ability to run the ability to write and speak language
Answer:
Characteristics that have helped humans survive major changes in the environment are their brains and body. Human's social cooperation with tool making always increases.
Survival of the fittest explains the mechanism of natural selection. The ability to adapt to new changes has helped humans survive major changes in the environment.
What is adaptation?Adaptation is the ecological process that is the process of the adjustment of the structures, behaviors, and physiology of the organism to suit the altered environment.
It is the variation that increases the fitness of the organism so that it can survive and reproduce in a specific environment. It is a dynamic evolutionary method, that is essential for the sustainability of the organisms.
Therefore, option A. the ability to adapt to new conditions has helped humans survive.
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The size of a food chain can vary, but the number of levels that a food chain can reach is limited. Why does this limit exist ?
Answer:
Energy is lost at each trophic level.
Explanation:
hope this helps have a good rest of your day :) ❤
Energy is lost at each trophic level.
What is food chain ?
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism.
What is tropic level?
Trophic level is defined as the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans.
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The effect on an organism or population of chemical exposure is called __________.
A)
natural hazard
B)
gene-environment interactions
C)
physiology
D)
dose response
E)
heredity
HELP i need help with this it’s due today
Answer:
It is A, as higher elevations are colder in climate
Explanation:
name and describe the process occurring in the nucleus which results in the formation of an mRNA molecule
Messenger ribonucleic acid (mRNA) is the single-stranded biological molecule that resembles the hereditary sequence of the gene and is needed for coding the proteins molecules essential for cell function and growth.
Transcription is the process that occurs in the nucleus.
What is the process that synthesizes the mRNA?mRNA is the biological molecule that gets formed from the double-stranded DNA molecule by the process of Transcription in the nucleus of the cell.The replicated DNA undergoes a transcription process and it's one strand transcripts to form a single strand of the mRNA molecule with the help of the transcription factors.One of the DNA strands acts as a template for the formation of the pre mRNA molecule with the help of the RNA polymerase II enzyme. The pre molecule formed undergoes an elongation and the termination process and the final mature mRNA is formed.Therefore, transcription results in the formation of the mRNA.
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When organisms grow, what happens to their cells?
A- the cells continue to get larger
B- they increase in number
C- both a and b
D- neither a nor b
Answer:
B.
Explanation:
whenever a organism grows the cells seperate to make up more room for the organism to keep growing until adulthood to elderly-hood
There are 10 pieces of candy in a bowl and 2 of them are chocolate. What percentage of the pieces of candy in the bowl are chocolate?
Answer:
20%
Explanation:
2 out of 10 is the same as 20 out of 100. So 2/10 = 2/100 or 20%
How can knowledge of cell structure and function help in the fight against infectious
diseases?
Answer:
if you know how a cell functions then you know where it can potentinally be injured or killed.