For many decades scientists thought I
molecules that carry genetic information, not DNA.
were the
Answer:
proteins in chromosomes
Explanation:
which of the following statements best describes how biological science has developed over time
Answer:
A is wrong, because that fact just simply is not true. There have been several other raced men and some women as well that made important contributions to science.
B is correct, because science isn't attributable to just the last couple of hundred years. In ancient times, people developed astronomy and medicine. This is also correct because it names females as part of the scientific contributions to society.
C is incorrect, because this fact is also completely false. Lots of important scientific discoveries have been made from before that, such as the invention of electricity (somewhat useful today I would guess:\) in 1879, which is much longer than 100 years ago.
D is also incorrect, because scientific knowledge is changing constantly, every minute, growing and expanding and changing to accomodate new knowledge and information that we've discovered.
In a food weh, which type of organism receives energy from the other three types?
Answer:
decomposers receive energy from the other three types
Explanation:
Where does photosynthesis happen in algae and plants
Photosynthesis occurs in the chloroplast of algae and plants. Details about photosynthesis can be found below.
What is photosynthesis?Photosynthesis is the process whereby green plants and algae produce food molecules by themselves using energy from sunlight.
Photosynthesis occurs in a compartment of a cell called chloroplast and it harbors a pigment that traps sunlight called chlorophyll.
Therefore, photosynthesis occurs in the chloroplast of algae and plants.
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How long does it take for an embalmed body to decompose?.
Answer:
Explanation:
The embalming … body decomposition timeline 24-72 hours after death — the internal organs decompose. 3-5 days after death — the body starts to bloat and blood containing foam leaks from the mouth and nose. 01/02/2007 · The time for an embalmed body to be reduced to a skeleton varies greatly.
7. The picture below shows a common angiosperm. Name three adaptations this plant has that allow it to live on land. (6 points)
The three adaptations that angiosperms have is attractive aspects of flowers, such as aroma and colors, are artifices created by angiosperms.
What are the adaptations of angiosperms?There are also fruits with adaptations that allow them to be dispersed by the wind; others that have structures that make them able to float on water, being carried by currents over long distances; or that allow them to stick to the fur of animals and be moved to new regions.
In this case, baspects of flowers, such as aroma and colors, are artifices created by angiosperms to attract pollinating animals, such as bats, bees, birds, etc. These adaptations are a major survival advantage over other plant groups.
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A human baby is born with one X chromosome and one Y chromosome.what must be true about this baby
Answer:
the baby is a male
Explanation:
if it were a female the it would be xx
What is TRUE about chromosomes?
A. They are found outside the nucleus of each cell
B. They contain genetic material
C. They are shaped like a double helix
D. There are 30,000 chromosomes on each gene
Answer:
B.
Explanation: not d or c
they are found INSIDE of the nucleus and not outside
so b
As human populations have changed over the years, people have altered the course of rivers and other waterways to better suit their needs. one approach has been through the damming of certain rivers. over time, many people question whether this effort has been beneficial. what are the negative impacts of damming a river that are being assessed?
dams allow more water to flow into nearby reservoirs, increasing the chances of disease transmission.
dams cause increases in salmon populations because more water is available for them to live in.
dams reduce salmon stocks, which reduces revenue and overall whale populations.
dams allow for invasive species to move around more easily, which reduces biodiversity.
Dams allowing more water to flow into nearby reservoirs thereby increasing the chances of disease transmission is its negative impact and is denoted as option A.
What is a Dam?This is a form of barrier which restricts the flow of water for different reasons such as reservoirs, electricity generation etc.
Since the water flows to reservoirs in close proximity, it increases the risk of disease transmission such as malaria etc.
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Use the following table to answer the question:
codons found in messenger rna
second base
first base u c a g third base
u phe
phe
leu
leu ser
ser
ser
ser tyr
tyr
stop
stop cys
cys
stop
trp u
c
a
g
c leu
leu
leu
leu pro
pro
pro
pro his
his
gln
gln arg
arg
arg
arg u
c
a
g
a ile
ile
ile
met thr
thr
thr
thr asn
asn
lys
lys ser
ser
arg
arg u
c
a
g
g val
val
val
val ala
ala
ala
ala asp
asp
glu
glu gly
gly
gly
gly u
c
a
g
this table shows the codons found in messenger rna. using this information, what sequence of nucleotides in the template strand of dna could code for the polypeptide sequence val-asp-ser?
guu-gau-agc
caa-cta-tcg
gtt-gat-agc
caa-cua-ucg
Nucleotides from the DNA template strand complement the mRNA's codons. These codons code for amino acids. Option B is correct. CAA - CTA - TCG
What are nucleotids?Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.
Several nucleotides joint by their extremes compose the nucleic acids.
Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information neccesary to carry out cellular functions.
What are codons?Codons are short sequences of three nucleotides that carry genetic information needed to build the protein. These units determine which amino acids are added to the growing chain during the assembly.
More than one codon might code for the same amino acid.
Different sequences of three nucleotides -codons- might code for a different amino acid. This means that the resulting proteins will not be the same, and they will accomplish different functions.
What are the template and coding strand?When DNA molecule unwinds to be transcripted, two single strands get separated,
The coding strandIt receives that name because it is the sequence that codes for each amino acid composing the proteins.
When referring to the coding strand, we are talking about the sequence that turns out to be the same as the mRNA that results from the transcription of the same DNI segment -switching bases T for U-.
The template strand -complementary strand-
This is the one that is used during transcription to synthesize mRNA. The template strand is the one that is going to be complemented by the mRNA.
To get to know the sequence of nucleotides in the template strand that code for the polypeptide sequence val-asp-ser, firts we need to know which codons code for these amino acids.
1)
Amino acid Codon
Val GUU, GUC, GUA, GUG
Asp GAU, GAC
Ser UCU, UCC, UCA, UCG, AGU, AGC
These are all the possible codons in mRNA that might code for these amino acids. Now, we need to identify their complementary bases on the template strand.
2)
mRNA Template strand
GUU CAA
GUC CAG
GUA CAT
GUG CAC
GAU CTA
GAC CTG
UCU AGA
UCC AGG
UCA AGT
UCG AGC
AGU TCA
AGC TCG
The column of the right shows all the possible nucleotides that might complement the mRNA codons. There are several combinations. Now, we need to choose among the options the correct combination.
3)
Options A and D ⇒ guu-gau-agc and caa-cua-ucg
These are not the correct options since they carry uracils instead of thymines. Remember that DNA molecules have thymine, and RNA molecules have uracil.
Option C ⇒ gtt-gat-agc
This is not correct since these sequences do not complement the mRNA codons.
Option B ⇒ caa-cta-tcg
This is correct. You can find these nucleotide sequences among the options written before for the template strand.
Option B) CAA - CTA - TCG is the correct one.
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Answer: CAA - CTA - TCG is the correct one.
Explanation:
Explain three cause and effect relationships between the human activities and the measurable changes in the Earth system represented in the Understanding Global Change model
Answer:
Humans are gradually altering the climate and the earth's temperature through burning fossil fuels, destroying forests, and rearing animals.
Explanation:
This significantly increases the amount of greenhouse gases already present in the atmosphere, increasing the greenhouse effect and contributing to global warming.
Climate change is mostly caused by the greenhouse effect. Some gases in the Earth's atmosphere act as greenhouse glass, trapping heat from the sun and preventing it from escaping into space, causing global warming.
Hope it helps;
The purpose of a controlled experiment is to allow a scientist to isolate and test?
A a conclusion
B many data
C several variables
D a single variable
PLEASEE help fast!!!!!!!
Answer:
I think its fourth one
Explanation:
4 th one only guess
There are a population of oysters that move into the shallow water. The light colored oysters blend in with the rocks. The dark colored oysters blend in with the shadows cast by the rocks. What types of selection will this population experience? Use the diagrams below to help make your decision. A) directional B)stabilizing C) disruptive D) all the above
Answer: I believe disruptive
Explanation: I believe
18. identify the three conditions under which ionic reactions can run to completion, and write an equation for each.
Formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.
What are the three conditions under which ionic reactions completed?The three conditions under which ionic reactions can run to completion i.e. formation of a gas, formation of a precipitate and formation of a slightly ionized product.
K+(aq) + Br−(aq) + Ag+(aq) + C2H3O2−(aq) → K+(aq) + C2H3O2−(aq) + AgBr(s)
Mg2+(aq) + SO42−(aq) + Ba2+(aq) + 2NO3−(aq) → Mg2+(aq) + 2NO3−(aq) + BaSO4(s)
So we can conclude that formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.
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The diagram below represents changes in the types of plants growing in the same area during four different time periods. Different types of plants have been labeled for each time period. This change in plant types over time is an example of
Answer:
A. Ecological Succession
What does repetition, reproducibility, precision, accuracy, and replication mean?
Repetition
the act of something repeating over and over again.
Reproducibility
the rate or amount of which an organism is able to reproduce.
Precision
with excessive intent to perfect an action.
"The cake must be iced with precision."
Accuracy
the ability to be accurate; the amount of how accurate something is.
"Archery requires accuracy."
Replication
the act or rate of which an object is copied.
Which organelle accurately completed the chart
Answer:
lysosome
Explanation:
Imagine that horn color in Hodags (folkloric creatures of Wisconsin) is controlled by a single gene so that when you mate a Hodag homozygous for bright orange horns (COCO) with a Hodag homozygous for ivory horns (CICI), numerous offspring are produced, all with pale orange horns. Now consider that you cross a pale orange-horned Hodag with a pale orange-horned Hodag and get an F2. What would the outcome of the F2 generation be
"Imagine that horn color in Hodags (folkloric creatures of Wisconsin) is controlled by a single gene so that when you mate....", the outcome of the F2 generation would be outcome be 1 bright orange: 2 pale orange: 1 ivory. This is further explained below.
What is homozygous?Generally, homozygous is simply defined as a situation in which two alleles for a given gene are present.
In conclusion, Imagine, for a moment, that you breed two Hodags with different colored horns and get an F1 offspring. Two normal alleles or two alleles with the same variation make up a homozygous genotype.
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After feeding at the surface of the ocean during
the day, many ocean organisms migrate to deeper
waters. While there, they release ammonia in
their urine. Many bacteria use the nitrogen from
the ammonia as they make amino acids, which
eventually end up in food chains on both land
and water. These amino acids may even be used
in humans. Which statement best explains these
observations?
(1) Chemical elements, including nitrogen, pass
through food webs and are combined and
recombined in different ways.
(2) Chemical elements, including nitrogen, are
removed from food webs and eliminated
from ecosystems.
(3) Nitrogen is transferred directly from bacteria
to humans.
(4) All elements in the ocean remain there and
are not transferred to other ecosystems.
Name and/or describe as many human body systems as you can. what is the function of each body system and what are some of the major organs that are part of each body system?
Answer:
The endocrine system is a collection of specialised organs (endocrine glands) scattered throughout the body that act to produce hormones.
Explanation:
If an organism were to die in an environment that had no saprotrophs or detritivores, what would you expect to see if you observed the area 2 weeks later?
A. There would be nothing left, it will have completely decomposed.
B. The body would remain, and be just as it was when it died except for weathering.
C. There will be no difference as compared to an area that has saprotrophs and detritivores.
D. The body would be decomposing at about half the normal speed.
The body would remain and be exactly as it was when it died, with the exception of weathering, as you would expect to see if you visited the area two weeks later. As a result, B is the correct answer.
What are saprophytes?An organism that feeds on dead and deteriorating organic stuff is referred to as saprophytes.
Saprotrophs are decomposers that live on or in dead organic matter and secrete enzymes and nutrients into the ecosystem. Fungi are one such example.
With the exception of weathering, which is removed by air, water, or other agents, the deceased organisms will remain the same without detrivores and saprotrophs.
Thus, the correct option is B.
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Crossing over between non sister chromatids during meiosis is significant in heredity
Crossing over is the main event in meiosis and heredity as it leads to genetic variation.
What is genetic variation?Genetic variation is the changes that take place in the genes of individuals that can lead to the formation of new characters.
it generally occurs in meiosis specifically during crossing over.
Thus, it can be concluded that crossing over between non-sister chromatids during meiosis is significant in heredity as it leads to genetic variation.
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Which of the following is the term
used to describe the division of a
cell's cytoplasm?
A. Mitogenesis
B. Cytogenetics
C. Cytokinesis
D. Mitosis
ANSWER:
CYTOKINESIS
Explanation:
just got it right on edge 2022
which answer choice is a “product”?
Answer:
D.A substance that is produced during a chemical reaction
B. What is a problem with partial DNA samples? In your answer, include how databases
relate to this problem.
Answer:
Partial profiles will match up with many more people than a full profile. And even full profiles may match with a person other than the culprit. Further complicating matters, a single DNA profile might be mistakenly generated when samples from multiple people are accidentally combined.
Explanation:
Answer:
Partial profiles will match up with many more people than a full profile. And even full profiles may match with a person other than the culprit. Further complicating matters, a single DNA profile might be mistakenly generated when samples from multiple people are accidentally combined.
Explanation:
what change do you observe in three seed if you use boiled and cooled water of tap water in breaker
The left and right cerebral hemispheres are connected by the group of answer choices fornix. septum. cerebral commissures. cerebral ligaments. arcuate fasciculus.
he left and right hemispheres are connected by the cerebral commissures. Thus, the correct option is C.
What is cerebral commissures?Three tracts of nerve fibers or axons connect the right and left cerebral hemispheres, and these are referred to as commissures cerebral.
The corpus callosum, anterior commissure, and posterior commissure are three transverse nerve fiber bundles that connect homologous parts of each hemisphere.
The corpus callosum, also known as the great cerebral commissure, is the largest, connecting the majority of the cerebral hemispheres and allowing the cerebral cortex to function as a whole.
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Food proteins are used most efficiently when we Multiple Choice consume a very-low-kilocalorie diet. consume enough carbohydrates and fats to meet our kilocalorie needs. consume a low-carbohydrate diet. consume them with alcohol.
Food proteins are used most efficiently when we : ( B ) consume enough carbohydrates and fats to meet our kilocalorie needs
Our Kilocalorie needsOur kilocalorie needs vary between male and females. An average male needs about 2700 kcal per day while a woman needs about 2200 kcal per day to function properly. In order to meet this kilocalorie needs we have to consume the essential nutrients such as carbohydrates and fats and proteins.
Hence we can conclude that Food proteins are used most efficiently when we consume enough carbohydrates and fats to meet our kilocalorie needs
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How does water enter the atmosphere? a. liquid water evaporates from lakes when heated by the sun. b. frozen water sublimates from ice and snow. c. liquid water is lost from tree leaves during evapotranspiration. d. all of the above. please select the best answer from the choices provided a b c d
Answer:
d
Explanation:
Water enters the atmosphere by :
⇒ liquid water evaporates from lakes when heated by the Sun
⇒ frozen water sublimates from ice and snow
⇒ liquid water is lost from tree leaves during evapotranspiration
Answer:
d. all of the above
Explanation:
tried on ed and it was correct :)