Answer:
such as tissue paper, do not allow light to pass through as easily, and images cannot be seen clearly. Opaque materials, such as wood and metals, allow no light to pass through.
Explanation:
3. Explain the role of adaptation in the theory of natural selection. |
Answer:
The idea of natural selection is that traits that can be passed down allow organisms to adapt to the environment better than other organisms of the same species.
The best way to find out how old a sample of petrified wood (225 million years old) from the
Petrified Forest National Park in Northeast Arizona is by
a.radiocarbon dating
b.potassium-argon dating
Answer:
a.radiocarbon dating
9. a) How does hydrogen bonding help the transport of water in plants?
Answer:
Water has a high Cohesion because of Hydrogen bonding. This is important as transport of water in the Xylem in plants relies on water being pulled up. Cohesion also gives the water a high surface tension, allowing small organisms, such as Pond Skaters, to walk along it.
Explanation:
Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.
Plants obtain the hydrogen they need from water molecules. Don't try to feed your plant hydrogen gas -- your plant wouldn't know what to do with it if you did. As long as they have water, plants can readily obtain all the hydrogen they need. :)
Select the correct location on the image.
Which structure fuses to form a diploid zygote during sexual reproduction?
Answer: the top one
Explanation:
The layers of the skin, from outermost to innermost, are:
A) hypodermis, dermis, and epidermis.
B) dermis, epidermis, and hypodermis.
C) epidermis, hypodermis, and dermis.
D) epidermis, dermis, and hypodermis.
how can we save endangered animals?
Answer:
There are a couple ways to save endangered animals.
Explanation:
First off, spreading awareness and attention about the topic of endangered animals is important so more people can talk about it. Secondly, you can donate to some organizations helping with species endangerment. Also boycotting your favorite clothing brands that may include harming animals can help.
respiration needs light to occur just as photosynthesis needs light true or false
Briefly compare
and contrast
Kingdom Plantae
and Kingdom
Eubacteria.
The Science Duo
Explanation:
di ko po Alam sagot jan ei sorry po
PLEASE HELP THIS IS TIME SENSITIVE!!!!!!!!!
Answer:
r and k
Explanation:
Answer:
top left and middle 2 go in R category
top right and bottom one go in L category.
Hope this helped! Mark brainliest pleast :3
Explanation:
1. In this process, plants use the energy of sunlight to convert water and
carbon dioxide into high-energy carbohydrates (sugars and starches), and
oxygen as a waste product
a. Calvin cycle
O b. photosynthesis
c. light-dependent reactions
d. cellular respiration
Answer:
Photosynthesis
Explanation:
Please read all this and and answer number 1
show your reasonings why you picked it
will give brainliest
Answer:
i would say suspect 4
Explanation:
A poodle and a parrot are both mammals so suspect 1 and 3 are out of the running. Suspect 2 works in a stone quarry so it probably doesn't have sand and hay near it.
17. The scientific study of human populations is called
A. ecology
B. demography
C. natural selection.
D. transition.
Answer:
B. Demography
Explanation:
Answer:
B
Explanation:
Demography is the statistical study of populations, especially human beings. Demographic analysis can cover whole societies or groups defined by criteria such as education, nationality, religion, and ethnicity.
1. A DNA segment has base order AGC TTA TCG. Which copy exhibits a frameshift mutation through deletion?(1 point)
-AGC TCG
-AGC TTA TAG
-TTA TCG
-AGC TTT CG
2. A DNA segment has base order CCC ATA GCT. Which copy exhibits a deletion in the first codon triplet and then a substitution mutation?(1 point)
-CCA ATA GCT
-CCC TAG CT
-CCA YAA CT
-CCA TAG CT
3. Which type of mutation causes cystic fibrosis?(1 point)
-insertion
-deletion
-substitution
-silent
4. Which statement about chromosomes is true?(1 point)
-DNA contains chromosomes.
-The same number of chromosomes appears in haploid and body cells.
-Chromosomes contain DNA.
-Chromosomes are found in sets of three.
5. Which modification affects an organism’s expressed characteristics while leaving its DNA sequence unchanged?(1 point)
-insertion mutation
-substitution mutation
-deletion mutation
-epigenetic change
Answer:
100% correct if you use the answers below :)
Explanation:
1. AGC TTT CG
2. CCA TAA CT
3. deletion
4. Chromosomes contain DNA
5. epigenetic change
A frameshift mutation involves the insertion or deletion of nucleotides in a DNA sequence, which modifies its open reading frame. A deletion is a mutation that involves the elimination of one nucleotide in DNA sequence.
With regard to the questions above described:
1. The sequence AGC TTT CG suffered a deletion of the Adenine (A) base at the second codon (i.e., AGC TTA TCG).2. The sequence CCA TAG CT exhibits a deletion of the Cytosine (C) base at the first codon (i.e., CCC ATA GCT).3. Cystic fibrosis is a recessive inherited disorder caused by a three-nucleotide (codon) deletion in the CF transmembrane conductance regulator (CFTR) gene. This deletion is associated with the loss of phenylalanine (Phe) amino acid in the exon 10 of the CFTR gene.4. The statement 'chromosomes contain DNA' is TRUE. Chromosomes are thread-like structures that contain part or all of the genetic material (DNA) of an organism.5. Epigenetic changes are modifications that affect an organism’s phenotype while leaving its DNA sequence. Epigenetic modifications include DNA methylation and histone modifications (e.g., histone acetylation, histone methylation).In conclusion, frameshift mutations involve the modification of the Open Reading Frame. Deletion involves the elimination of a nucleotide in DNA. Chromosomes are thread-like structures that contain genetic material. Epigenetic modifications don't modify the genetic (nucleotide) sequence.
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Sickle-shaped red blood cells result from a mutation in the gene that codes for hemoglobin.
This mutation results in sickle-cell anemia. A partial sequence of bases from a normal
hemoglobin gene and a sequence that results in sickle-cell anemia are shown below.
Normal hemoglobin:
T-G-A-G-G-T-C-T-C-C-T-C
Sickle-cell hemoglobin: T-G-A-G-G-T-C-A-C-C-T-C
What type of mutation is depicted in this sequence?
A Substitution
B Insertion
C Deletion
D Frameshift
Option A
Option B
Option C
Option D
Answer:
Substitution
Explanation:
Substitution is when is a mutation that exchanges one base for another. In this case, the T is an A.
T-G-A-G-G-T-C-T-C-C-T-C
T-G-A-G-G-T-C-A-C-C-T-C
How does the heliocentric model of planetary motion explain a star's path across the night sky?
The sky is fixed and rotates around Earth.
Earth moves along its orbit daily to follow the stars.
The rotation of Earth makes objects in the sky appear to move.
Each star creates a different amount of light, imitating movement.
Answer:
The Rotation of earth makes objects in the sky appear to move
The heliocentric model of planetary motion explains a star's path across the night sky by The rotation of the earth makes objects in the sky appear to move; this is in Option C, as this is one of the best concepts on the planetarium models.
What is the significance of the planetary model?The planetary model is very significant, as the heliocentric model, proposed by Nicolaus Copernicus, explains that the sun is at the center of the solar system and shows that the planets, including Earth, revolve around the sun. This heliocentric model provided a more accurate explanation of the movements of the planets and paved the way for future research.
Hence, the heliocentric model of planetary motion explains a star's path across the night sky by The rotation of the earth makes objects in the sky appear to move; this is in Option C, as this is one of the best concepts on the planetarium models.
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The genetic code is said to be universal. Which of the following lines of evidence would best support this idea?
Data that indicate that the genetic code changes frequently.
Data that are inconclusive about the nature of.
the genetic code.
Data that indicate that some organisms use one or more alternate codes.
Data that indicate that the genetic code is the same in all organisms tested so far.
Answer:
hi here is your answer....
Explanation:
Data that indicate that the genetic code is the same in all organisms tested so far.
becuase,
The genetic code is nearly universal, and the arrangement of the codons in the standard codon table is highly non-random. The three main concepts on the origin and evolution of the code are the stereochemical theory, according to which codon assignments are dictated by physico-chemical affinity between amino acids and the cognate codons (anticodons); the coevolution theory, which posits that the code structure coevolved with amino acid biosynthesis pathways; and the error minimization theory under which selection to minimize the adverse effect of point mutations and translation errors was the principal factor of the code’s evolution.
What is one of the causes of mechanical weathering?
,Answer: acid rain
Explanation:
Took the test
What pea sized organ is located at the base of the brain which is considered one of the major glands in the body?
Answer:
gallbladder
Explanation:
I think I am not sure
Answer:
Pituitary gland
controls the hormonal activity such as FSH and LH in females
Explanation:
Which statement about these cells is correct?
a.About 20 percent of the cells are dividing.
b. Most of the cells are undergoing meiosis.
c. Most of the cells will never undergo mitosis
d. About 80 percent of the cells are dividing.
About 80 percent of the cells are dividing because of the perfect structure of the cell.
What is cell division?Cell division is the process by which cells multiply that includes nuclear and cytoplasmic division. Meiosis and mitosis are their types.
So we can conclude that about 80 percent of the cells are dividing because of the perfect structure of the cell.
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What is the name of this diagram
Answer:
https://en.wikipedia.org/wiki/Diagram
Explanation:
Some help me fill in this Punnett Square
Answer:
R R
ww Rw Rw Rw Rw its only red flower.
Rr
ww Rw Rw rw rw the flowers are 50% red and 50% pink
1. ww
2. RR or Rr
3. if the parent for red is RR, then 100% ; if the parent is Rr, then 50%
4. if the parent for red is RR, then 0% ; if the parent is Rr, then 50%
5. rw
(GIVING BRAINLIEST!!)
A family goes on a walk beside a large river. What would most likely happen to the river if the oceans did not exist?
A) The river would get larger because it would snow and hail more often.
B) The river would get smaller because there would not be as much precipitation.
C) The river would get larger because there would be less evaporation.
Answer:
The answer would be B.
Explanation:
Rivers are often filled directly from the ocean and from precipitation.
A 30-year old woman was diagnosed with breast cancer. Which of the following processes that we learned
about today would be helpful to her in treating her cancer, and why?
Selective breeding, because she could be sure her children have no risk whatsoever of also getting breast
cancer.
Gene therapy, because it could actively target the cancer cells in her body as a treatment.
Artificial selection, because it could change her DNA so that she is not prone to breast cancer.
The language of r and a is what
Answer:
R is a programming language and free software environment for statistical computing and graphics supported by the R Foundation for Statistical Computing. The R language is widely used among statisticians and data miners for developing statistical software and data analysis.
Explanation:
Two plates moving towards each other are called convergent plates. Which
structures are likely to form at a convergent plate boundary?
A:rift valley
B:wave erosion
C:mountains
D:river canyons
Mountains are formed when two convergent plates move towards each other. Therefore, option C is correct.
What are convergent pates?A convergent plate boundary is a type of tectonic plate boundary where two tectonic plates are moving toward each other. As the plates move, they can collide, resulting in the formation of various geological features and processes, such as mountain ranges, volcanic eruptions, and earthquakes.
Convergent plate boundaries are one of the three main types of plate boundaries, along with divergent and transform plate boundaries. They are important in shaping the Earth's surface and are associated with some of the most spectacular geological features on the planet.
Thus, mountains are formed when two convergent plates move toward each other. Therefore, option C is correct.
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Why do cells go through the process of cellular respiration?
Natural selection leads to
Answer:
Mark me brainliest if my answer is correct please thank you and have a nice day
Explanation:
Speciation can be driven by evolution, which is a process that results in the accumulation of many small genetic changes called mutations in a population over a long period of time. ... Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.
What are the factors that influence the saltiness of water?
Answer:
Evaporation. Evaporation can only take away water volume, not salt content. Hot air around.
Rivers. Rivers can dilute the salt concentration of an ocean. If there are numerous rivers.
Ocean Currents. Function of Ocean currents are responsible in both increasing and.
Ice Formation. The formation of ice takes away most of the fresh water from the ocean.
Explanation:
Which one is an example of an organ system
A. Astrocyte (cyte meaning cell)
B. Liver
C. Digestive system
D. Octopus
Need help asap
Answer:
Digestive system
Explanation:
This is the only organ system listed
Trees begin from tiny seeds, with a mass of a 2-3 grams, and yet an
adult tree can weigh many thousands of pounds. If matter cannot be
created (Law of Conservation of Matter), where did the "stuff" that
makes a tree come from?
Answer:
mm yes read me
Explanation:
the energy was already there energy never dies it just chooses what it wants to be put into