Answer:
Most chondrites contain the anhydrous silicate minerals olivine, orthopyroxene and clinopyroxene, and plagioclase, as well as the nickel-iron minerals kamacite and taenite and the iron sulfide troilite.
Explanation:
What type of mutation causes down syndrome? (point, frameshift, deletion, insertion, etc.) -- Why is it categorized as this type of mutation?
Trisomy 21: About 95% of people with Down syndrome have Trisomy 21. With this type of Down syndrome, each cell in the body has 3 separate copies of chromosome 21 instead of the usual 2 copies. Translocation Down syndrome: This type accounts for a small percentage of people with Down syndrome (about 3%).
cdc
Mutations cause changes in DNA which ultimately changes _____.
A. elements
B. proteins
C. compounds
D. essential nutrient
A cell with 18 chromosomes undergoes the cell cycle. How many daughter cells are created? Each daughter cell has how many chromosomes? *
Answer:
Each daughter cell will also have 18 chromosomes.
What does the red at the beginning of the video represent? What does this mean about the landscape around Mount St. Helens before 1980?
Answer:
On May 18, 1980, an earthquake struck below the north face of Mount St. Helens in Washington state, triggering the largest landslide in recorded history and a major volcanic eruption that scattered ash across a dozen states
Explanation:
Flora y fauna y en clima frio??
Answer:
Explanation:
no entiendo
Polycomb group (PCG) gene mutants cause ectopic expression of Antennapedia (Antp) and other homeotic genes. The PCG protein encoded by the PgG gene has a domain that binds to methylated histone H3. This finding supports which of the following hypotheses?
a) that PCG mutants lack Antp mRNA compared to the wildtype
b) that PCG repress transcription by interacting with chromatin
c) that PCG binds to Antp genes and serves as a transcription activator
d) that PCG activates Antp genes in tissues
e) that PCG is allosteric activator of RNA polymerase II
Answer:
b) that PCG repress transcription by interacting with chromatin
Explanation:
The Polycomb-group (PcG) proteins are evolutionarily conserved proteins in all higher eukaryotes which are involved in establishing epigenetic silencing of developmental genes. In animals, the PcG proteins are well known to form complexes capable of silencing target developmental genes by modulating chromatin structure during embryo development. In Drosophila melanogaster, the Polycomb repressive complex 2 (PRC2) is known to catalyze the trimethylation of lysine 27 on histone H3 (i.e., H3K27me3), thereby silencing homeotic (Hox) developmental genes. The core of the Drosophila PRC2 complex is composed of Enhancer of zeste [E(z)], Suppressor of zeste 12 [Su(z)12], and Extra sex combs (Esc) proteins. The E(z) protein is a well-known histone methyltransferase that maintains the methylation status of Hox genes, thereby silencing their expression during embryo development.
how did 6pm sea level rise changes different regions of the world
Answer:
answer 3
Explanation:
because john said so
Is bacteria prokaryotic or eukaryotic
PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!!!
Answer:Nucleotide
A nucleotide consists of a sugar molecule
If a change in the soil occurred, how could that impact the organisms (consumers) in that ecosystem? Pls explain
Answer:
The soil could kill the plants in the area and the consumers will lose there food and the organisms will die off or go extinct.
Explanation:
Manipulate the settings to model the scenario. Observe what happens to the
observations in the Lab Guide,
About laboratory work
Stream Slope
Gentle
Amount of Rainfall
None
Surrounding Terrain
Plain
Mountains
Check
Pause
5 of 10
Answer:
subject?
Explanation:
Which of the following is accomplished by absolute dating? A. It allows us to measure an object's age in years. B. It allows us to preserve organic material. C. It allows us to identify the elements in an object. D. It allows accurate knowledge of future seismic events.
Answer:
A. it allows us to measure an object's age in years
How does lateral gene transfer help explain the evolution of antibiotic resistance in bacteria?
Answer:
Lateral gene transfer allows the bacteria to develop resistance to antibiotics and spread it between bacterial populations. ... This process allows bacteria to transfer genes from one population into another. As a result, the next generation would evolve and develop defenses that would make them resistant to the drug.
Explanation:
Which of the following statements best describes what happens during exercise?
(Please explain why each of the incorrect statements are wrong. Thank you!)
A.
Blood vessels in the muscles dilate to increase blood flow.
B.
Blood vessels in the heart dilate to increase blood pressure.
C.
Blood vessels in the organs dilate to increase blood oxygen.
D.
Blood vessels in the lungs dilate to increase blood volume.
How can you apply this approach to the classification of living things?
Answer:
Living things are classified into groups that start out large and become more specific in a system of classification called taxonomy. Scientists classify living things at eight different levels: domain, kingdom, phylum, class, order, family, genus, and species.
Explanation:
Hope this helps you
The relationship between the remora and the shark is an example of - (5.5)
A predation
B commensalism
C parasitism
D mutualism
What signals your body to breathe out, or exhale. We learning about the respiratory system
Answer: Your brain constantly gets signals from your body which detect the amount of oxygen and carbon dioxide in your blood. Your brain will send signals to the muscles involved in breathing and adjust your breathing rate depending on how active you are.
HOPE THIS HELPED HAVE A WONDERFULL DAY!
A basketball player helps maintain stable body temperature during the game by sweating. The sweat helps cool his body by evaporating. What is this an example of?
a, mitosis
b. homeostasis
c. respiration
d. digestion
I need help please!!!
Answer:
I believe the answer is x
Explanation:
I can't really tell from the graph bit I hope this helps
What is the ductus arteriosus?
Answer:
the ductus arteriosus is a normal blood vessel that connects two major arteries — the aorta and the pulmonary artery — that carry blood away from the heart. The lungs are not used while a fetus is in the womb because the baby gets oxygen directly from the mother's placenta.planation:
Answer:
Heyaa!! My name is Pinky!! I'm here to inform you that your answer is....
Explanation:
!!! A Ductus Arteriosus is a heart defect caused by problems in the heart's development. !!!
!!! Patent ductus arteriosus (PDA) is an opening between two blood vessels leading from the heart !!!
Have An Amazing Day!!!
~Pinky~
An atom has 5 electrons in its outer electron shell. To complete its outer shell it needs_____additional electrons.
-5
-3
-2
-1
-4
to complete the outer shell it needs -3 additional electrons
A researcher is curious if Bt resistant bollworms are susceptible to an insecticide called DDT. Bollworms susceptible to Bt have genotype RR or Rr, whereas those resistant to Bt have genotype rr. Bollworms susceptible to DDT have genotype tt, whereas bollworms resistant to DDT have genotypes Tt or TT. In an effort to better understand how these two genes are inherited, the researcher crosses an RR tt bollworm with an rr TT bollworm to produce the F1 generation. Then, the researcher crosses the F1 generation to produce an F2 generation. What proportion of the F2 generation is resistant to both Bt and DDT
Answer:
The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.
Explanation:
It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.
Cross: RR tt with rr TT
Gametes: Rt and rT
F1 cross:
RT
rT RrTt ( susceptible Bt and resistant DDT)
F1 Cross with F1
Gametes: RT, Rt, rT and rt
cross:
RT Rt rT rt
RT RRTT RRTt RrTT RrTt
Rt RRTt RRtt RrTt RrTt
rT RrTT RrTt rrTt rrTt
rt RrTt Rrtt rrTt rrtt
The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.
what is the long term impact on the environment from agriculture
Answer:
agriculture help the environment
Explanation:
Like in making of money and to prevent famine over a period of time
which best describes the concept of natural selection?
A. an organism will always mutate to survive
B. The fittest organisms are selected for
C. Nature selects the organisms with the most Mutations
D. mutations make organisms more fit
Answer:
D.
Explanation:
Natural selection is the way that organisms adapt through adaptations to better survive and pass on the special genes which enable the offspring to survive. Saying an organism will always mutate to survive is wrong, as natural selection implies that not all organisms survive. With natural selection, nothing is "selected", so B and C are not correct. However, mutations DO make organisms "more fit" to survive their environments, so D is the answer.
Answer: The fittest Organisms are selected for
Explanation: Just did the test :)
Define the five systems. Be sure to include enough information to distinguish each system from the others.
The lithosphere is largely made up of soil, minerals, and rocks—essentially the earth’s crust. A sister to the lithosphere, the hydrosphere contains the liquid parts of the earth. The cryosphere consists of all frozen water on the earth. Frozen water makes up about 75 percent of the earth’s fresh water. For the atmosphere, the system changes from water to air. The atmosphere is the thin layer of gasses surrounding the planet. The biosphere includes all living organisms, from the bottoms of the oceans to the upper reaches of the atmosphere.
Answer:
what they said ^
Explanation:
"The lithosphere is largely made up of soil, minerals, and rocks—essentially the earth’s crust. A sister to the lithosphere, the hydrosphere contains the liquid parts of the earth. The cryosphere consists of all frozen water on the earth. Frozen water makes up about 75 percent of the earth’s fresh water. For the atmosphere, the system changes from water to air. The atmosphere is the thin layer of gasses surrounding the planet. The biosphere includes all living organisms, from the bottoms of the oceans to the upper reaches of the atmosphere."
A___is where an organism lives ,and their ___is their way of life in that place
a:habitat;career
b:niche;habitat
c:habitat;niche
Answer:
C
Explanation:
a habitat is where an organism lives,and their niche is their way of life in that place .
what are the tropical rainforest dominant plants
Answer:
Orchids, Queen’s Tears, Lilies, Poinciana, Torch Ginger, Heliconia and Bromeliads. Orchids. This type of rainforest flowers grows in humid environments such is the Amazon rainforest. This type of rainforest flower is most frequently found rainforest flower in tropical rainforests.
Explanation:
A ______ is anything in the environment that affects the behavior of an organism.
tropism
hormone
stomata
stimulus
Answer: stimulus
Explanation:
A stimulus is anything in the environment that affects the behavior of an organism.
A stimulus is anything in the environment that affects the behavior of an organism.
what activity would increase the risk of anti microbial resistance
Answer:
Down below
Explanation:
The main drivers of antimicrobial resistance include the misuse and overuse of antimicrobials; lack of access to clean water, sanitation and hygiene (WASH) for both humans and animals; poor infection and disease prevention and control in health-care facilities and farms; poor access to quality, affordable medicines.
A solution in which the concentration of solutes is the same inside and outside of a cell is a _______________________ solution: *
hypertonic
hypotonic
isotonic
None of the above