Answer:
RNA is a polymer because it is made up of many monomers called nucleotides. Moreover, RNAs can form macromolecules because many RNAs are large molecules (i.e., polynucleotide chains).
Explanation:
Ribonucleic acid (RNA) can be defined as a single-stranded nucleic acid polymer of the four nucleotides. In RNA, each nucleotide is composed of a 1-ribose sugar, a 2-phosphate group and 3-one of four types of nitrogenous bases: Adenine (A), Cytosine (C), Guanine (G), and Uracil (U), which are covalently bonded to form polynucleotide chains. There are different types of RNAs such as mRNA, tRNA, rRNA, miRNA, circ-RNAs, lncRNAs, etc. Many of these RNAs form large single-stranded (ss) molecules, i.e., polynucleotide chains. For example, an mRNA sequence may have a length of 5,000 nucleotides (5 kb) or even more, and there are RNA viruses that have more than 20000 nucleotides (20 kb) in length.
Define the word ⇒ Biosphere
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The biosphere is a narrow zone of the earth where land, water, air interact with each other to support life.
Answered by Gauthmath must click thanks and mark brainliest
give a short introduction of carl von linnaues and rh whittakers regarding classification of living beings one major point
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Question
Use the text to identify the sentences with evidence that matches the claim.
Claim 1 --> Tropical rainforests contain more biodiversity than all other biomes.
1) Biodiversity refers to the total number of different species of all kinds living in an area.
2) Tropical rainforests have many of the climate characteristics that organisms of different species need to grow, such as warm temperatures, plenty of rain, and many food sources.
3) There are large amounts of daily sunlight, which provides a great deal of energy to a variety of rainforest organisms.
4) Surprisingly, rain forest soil is very poor.
5) Due to the large amounts of rainfall, nutrients are leached out of the soil quickly.
6) Warm temperatures cause dead organisms to decay quickly, and the nutrients are then used by many different plants.
1, 2, 5
1, 2, 5
1, 3, 4
1, 3, 4
2, 3, 6
2, 3, 6
1, 4, 5
Answer:
44
Explanation:
44-7=55
what is tissue A called?
Answer:
Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous
Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partners to be willing to mate. Such a ritual constitutes a ________ ________ reproductive barrier. Group of answer choices
Complete question:
Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partners to be willing to mate. Such a ritual constitutes a ________ ________ reproductive barrier.
Group of answer choices
A) behavioral . . . prezygotic
B) mechanical . . . postzygotic
C) temporal . . . prezygotic
D) gametic . . . postzygotic
Answer:
A) behavioral . . . prezygotic
Explanation:
The biological concept of species states that individuals of a species can not mate and reproduce with individuals of another species. But if they get to reproduce, the progeny will not be viable or fertile. There will not be any reproductive success.
There are different reproductive isolation mechanisms, which are barriers that inhibit or interrupt the genetic flow between different species.
Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, while the postzygotic mechanism impedes the zygote to develop and reach the adult stage.
There are different types of reproductive barriers.
Pre-copulatory o pre-ziygotic:
Ecological or by habitat isolation; Seasonal or temporal; Sexual o ethologic; Mechanic; Gametes incompatibility.Postzygotic mechanisms or barriers include
Hybrid inviability, Hybrid sterility, Hybrid reduced viability or fertility, Cytoplasmic interactions.Behavioral isolation is also known as ethological isolation or sexual isolation. This is a prezygotic barrier that refers to the fact that even when many species occupy the same area, they are not sexually attracted to each other, and might be rejected because of behavioral factors, not getting to mate. This mechanism includes courtship patterns or mating rituals and specific chemical signals that allow recognition between individuals of the same species.
No.3 plzz ...?
Any one
2^n=32
n=5
It doesn't really match up with the options so not sure, my best guess would be either choosing 16 or 4. 16 in case the person calculated as 16 times 2 = 32 and 4 bc its the closest.
como se llama el primer cartílago de la tráquea
Answer:
cricoid cartilage
Explanation:
I think
Select all that apply.
Which conditions relate to the research of van Helmont?
plant mass related only to soil
conclusions partly correct
demonstrated plant food from soil
conducted around 1400 AD.
plant mass related to H 20
Answer:
I'd say the best Answer is A & C
Explanation:
list and explain the advantages of 5 farming systems
Which of the following is the primary method of controlling citrus canker?
quarantine and destruction of infected plants
treatment with fungicides
genetic modification of plant stock
treatment with herbicides
Answer:
genetic modification of plant stock
Which would make for a weak claim?
• a blog cited as the source
• a large sample size
• clear variables and controls
• multiple trials
Answer:
A
Explanation:
Blogs can have a lot of misinformation
Single-celled organisms with cell walls do not have contractile vacuoles. Suggest why.
There are four different combinations of offspring genotypes in every Punnett square. Fill in the blanks below to complete the ratio for the Punnet square shown to the right.
Where's the Punnett square?
A dependent variable is:
Answer:
the variable that is being measured or tested in an experiment
Explanation:
just fax
What causes an ionic bond to form between sodium and chlorine?
Answer:
The loss of an electron
Explanation:When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na+), and the chlorine atoms each gain an electron to form anions (Cl−
Answer:
"Sodium has 1 electron in its outermost shell, and chlorine has 7 electrons. ... If sodium can transfer it's "spare" electron to chlorine, both atoms will satisfy their full outer shell requirements, and an ionic bond will be formed."
Explanation:
Soil moisture influences both hydrological and agricultural processes and is part of the water and energy cycles through ________.
transpiration
evapotranspiration
evaporation
condensation
Answer:
Its either evapotranspiration or condensation
Explanation:
Hope it helps✌✌
Answer:
The correct answer is evapotranspiration.
Explanation:
Evapotranspiration is the process of water moving from Earth's surface to the atmosphere. The way water moves from the soil to atmosphere is through this process.
How are gymnosperms in category gnetophyta usually pollinated?
A. by wind
B. by hand
C. by insects
D. by water
Answer:
by insects
Explanation:
Which molecules in your body do
not contain carbon atoms?
Genes, which are made of DNA
Proteins
Sugars
Water
I'm pretty sure its water
If the results of an experiment are considered valid they will? A. Give the same nontestable results B. Give The same outcome when repeated C. Give different outcomes in different parts of the world D. give different results from repeated by different scientist
Answer:B
Explanation:
If it's valid, then it has substantial evidence to back up the results, which will be the same over and over again.
which of the following are human activities that can negatively impact ecosystems.
Answer:
Hey not sure if there is something that is supposed to be viewable but some common human activities that can impact ecosystems are, deforestaion, pollution, littering, fracking, spilling oil into the oceans.
Explanation:
Answer:
You didn't put a photo but cutting down trees of putting chemicals into the water/earth can harm ecosystems
ASAP Determine whether the statement is true or false and why. “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to a different period in time becoming more human-like the closer to the present they are, showing a clear evolution into humans.”
A. False, it should read “We have discovered no series of humanoid fossils that are similar to humans, showing a clear lack of any transitional fossils as evidence of human evolution”
B. True
C. False, it should read “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to a different period in time becoming less human-like the closer to the present they are, showing a clear evolution away from humans.”
D. False, it should read “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to the same period in time, showing that many human-like species existed at once, but all went extinct.”
The statement is true.
Human evolution is a scientific term that refers to the process of biological evolution of the human species from its ancestors to the present.
The current knowledge of human evolution is the result of the convergence of various sciences such as:
Genetics.Physical anthropology.Paleontology.Geochronology.Archeology.Linguistics.The results of various studies relate the current human species as a result of multiple evolutionary processes of hominimus species, ardipithecus, australopithecus, and homo that through time improved different aspects until reaching the human species that exists today.
According to the above, what is described in the fragment presented is true because it presents a correct version of what happened in human evolution. Meanwhile, options A, C and D are incorrect because they do not present correct information regarding human evolution.
Learn more in: https://brainly.com/question/13492988
You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules. Upon further testing, you determine that the granules contain histamine. This cell is most likely a(n) _____. Multiple choice question. mature neutrophil mast cell eosinophil B cell
how do plants use carbon dioxide
A.They release it as waste
B.To build proteins
C.They store it as fuel in limestone deposits
D.To produce sugars
Answer:
to build protein............
Answer:
C. To produce sugars.
HOPE IT HELPS YOU.An ecosystem experiences a loss of denitrifying prokaryotes. Will this loss affect the health of the ecosystem?
yes it will, it will ruin the food chain
Helpppppp please!!! How do membrane proteins contribute to the membrane potential?
Answer:
the answer is B
Explanation:
the answer is b
perfect 2 minute speech on deforstation
Answer:
A warm welcome to all present here. Today I am going to give a speech on deforestation. Deforestation is the process of cutting down the forest, without replanting them again. The causes for deforestation are to obtain wood and fuel or to use the land for farming, mining or construction. From the time of civilization till now, forest wood is very essential for humans in our day to day life.Explanation:
U can add more if u like it!Which process allows a bacterium to take DNA from its environment and add it to its own genome?
Answer:
b transformation
Explanation:
In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.
3. Which of the following most accurately represents the various feeding relationships within an ecosystem?
O A. A biomass pyramid
O B. A food chain
O C. A feeding diagram
OD. A food web
Answer:
B- A food chain
Explanation:
This answer has been confirmed as correct and helpful
Which of the groups below has suffered the greatest percentage of species extinctions since 1600 (A) birds, (B) fishes, (C) mammals, (D) reptiles
(a) Birds is the correct ans
Explanation:
.......
Answer:
My guess would be mammals
Explanation:
Habitat destruction
Do populations of different species of birds that live in the same community compete? Explain.
Please help me
