Answer:
The principal active components in khat are cathinone and cathine (norpseudoephedrine) (see also Drug profile on synthetic cathinones). Chewing khat releases these substances into the saliva; they are rapidly absorbed and eliminated.
Explanation:
New combinations of DNA can be formed from several sources in the
genetic material passed from parents to offspring including mutations
caused by environmental factors, errors during replication, and meiosis.
Choose one of the above factors and describe how it specifically leads to a
new combination of DNA.
Your answer
Meiosis is the common factor which is responsible for the production of new combinations or recombination in the organisms which reproduce through sexual mode of reproduction.
What is Meiosis?Meiosis is a special type of cell division which occurs in the germ cells in organisms which reproduce through sexual mode of reproduction. These organisms produce the gametes, such as sperms or egg cells. Meiosis involves two rounds of division which ultimately result into formation of four daughter cells with only one copy of each chromosome.
Recombination or new combination results when two molecules of DNA exchange pieces of their genetic material with each other. One of the most common examples of recombination can be observed during meiosis specifically, during the prophase I stage, when homologous chromosomes line up in pairs and swap some segments of their DNA.
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The following shows a food chain in a garden environment.
Sun → grass → grasshopper → bird
Which statement describes the energy transfer in this food chain?
Answer:
the best transfer is the sun
what is the impact and consequences of climate change on people, environment and agricultural sector?
REDUCED
Crop qualityCrop quantityStrorage stability in fruitssugarINCREASE
WeedsBlights Insectsin which sealed container would the organisms be able to continuously cucle 02 and Co2 gases
The container or jar with snails crawling on the living plants would be the one where organisms be able to continuously cycle oxygen and carbon dioxide gases. Thus, the correct option is B.
What is Gaseous exchange?Gas exchange is the physical process by which different gases move passively by diffusion across a surface. For example, this surface might be air or water interface of a water body, the surface of a gas bubble in a liquid, or a biological membrane which forms the boundary between an organism and its extracellular environment.
A sealed container is mainly comprised of a jar with snails which is crawling on the living plants, represents continuously cycle oxygen gas and carbon dioxide gases between the two organisms. The plants produce oxygen gas by consuming carbon dioxide in the photosynthesis process, and the snails produce carbon dioxide and consume oxygen gas during the respiration process.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
In which sealed container would the organisms be able to continuously cycle O2 and CO2 gases?
A. A jar with a lizard eating a snail
B. An jar with snails crawling on living plants
C. A room with a cat chasing a mouse
D. A room with mice eating moldy grain
Which class of drugs reduces pain?
Steroids
Hallucinogens
Depressants
Narcotics
Answer:
Narcotics
Explanation:
Narcotics, or otherwise commonly known as opioids are massively known for pain relief. There's opioid epidemic here in US b/c people are abusing the drug at extremely alarming rates. You might have heard of codeine, morphine and fentanyl, these are some of the most potent and dangerous drugs if used without proper prescription.
How would i fill this in?
Relation between variables are the different born percentages in sea turtles.
What percentage of sea turtles are female?
Green sea turtles from cooler southern nesting strands were about 65 to 69 percent lady, testing showed. Sea turtles from warmer northern strands leaned indeed more heavily womanish, with86.8 percent of adult turtles,99.8 percent of sub-adult turtles, and99.1 percent of juvenile turtles turning out to be womanish.
How long does it take for a sea turtle to incubate?
The incubation time for utmost species is 45 to 70 days. exploration indicates that the coitus of an embryo is dependent on the temperature of the nest. Lower nest temperatures produce further males; advanced temperatures produce further ladies. For green ocean turtles, a nest temperature of 28 °C(82 °F) or below produces substantially males.
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In what form is energy stored in muscles
Osmosis is the passive transport of what substance
Answer:
Osmosis is the passive transport of water molecules across a selectively permeable membrane. In osmosis, water moves from an area of high concentration (high water potential) to an area of low concentration (low water potential) in order to balance out the concentration on both sides of the membrane. This process can be observed in living cells, where the membrane surrounds the cell controls the flow of water and other molecules in and out of the cell.
In simple words, Osmosis is a type of diffusion that specifically refers to the movement of solvent molecules through a selectively permeable membrane. It is a fundamental concept in biology and is crucial for the proper functioning of cells and organisms.
How are biomolecules related to the cell cycle?
Answer:
Among biomolecules, nucleic acids, namely DNA and RNA, have the unique function of storing an organism's genetic code—the sequence of nucleotides that determines the amino acid sequence of proteins, which are of critical importance to life on Earth. ... Proteins themselves are major structural elements of cells.
Explanation:
Among biomolecules, nucleic acids, namely DNA and RNA, have the unique function of storing an organism's genetic code—the sequence of nucleotides that determines the amino acid sequence of proteins, which are of critical importance to life on Earth. ... Proteins themselves are major structural elements of cells.
Bio molecules are related to the cell cycle such that they partake in the
numerous activities such as cell division that occur in cell cycle.
Bio molecules such as DNA and RNA store the genetic traits of the
organism. These traits are usually passed to the offspring during cell division
in the cell cycle. DNA contains other bio molecules such as protein which
forms the base pairs.
Cell division such as meiosis gives rise to four unique daughter cells and
mitosis gives rise to two identical cells. The bio molecules basically assist in
the passing of traits to their offspring.
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1) Why is the epicenter of the earthquake limited to two locations after you have data for him to seismograph stations?
2)Why is it important to receive data from three locations before sending out the emergency response team to an earthquake?
Answer:
Answer for question 2:
It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.
Explanation:
It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.
What is seismograph?Although it is frequently used interchangeably with "seismograph," a seismometer is the internal component of the seismograph, which can be a pendulum or a mass set on a spring.
Seismographs are tools used to capture ground motion during an earthquake. They operate as a part of a seismographic network and are buried throughout the world. The Chinese scholar Chang Heng created the first "seismoscope" in the year 132 A.D.
However, this just served to signal that an earthquake was taking place; it did not record earthquakes. In 1890, the first seismograph was created.
A seismograph is firmly fixed to the earth's surface so that, with the exception of the mass on the spring, the entire instrument shakes when the earth moves.
Therefore, It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.
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3
1. Which continent experiences the most
problems with access to clean, safe
water?
-) Q:
A:
O North America
O Asia
Africa
South America
Answer:
Africa
Explanation:
In order for a trait to be considered a competitive advantage, the trait must(1 point)
allow the individual to utilize fewer food and water resources to survive.
allow the individual to have fewer diseases and not get sick.
allow the individual to be stronger and outcompete others.
allow the individual to survive better and reproduce more in that environment.
Why are hooves more advantageous for horses in the modern era?(1 point)
Hooves are better equipped for environments with plains.
Hooves are better suited with environments with wetter climates.
Hooves are better suited for environments with a wider range of vegetation.
Hooves are better suited for environments with plenty of trees.
Imagine a major volcanic eruption has dramatically changed the environment on an island such that the average temperature and available sunlight are much lower. Of the following species present on that island, which species is most likely to adapt and evolve to this change instead of going extinct?(1 point)
a large mammal species with a low reproduction rate and specific food needs.
a bird species with specific nesting requirements that only feeds on one type of seed.
a reptile species with a high reproduction rate and very similar individuals.
an insect species with a high reproduction rates and a significant mutation rate
Of the four factors that affect the evolution of species, which factor is driven by random events?(1 point)
Speciation
Competitive advantage
Genetic variation
Differential survival and reproduction
Which factor will most likely guarantee evolution rather than extinction?(1 point)
larger animal sizes
changes in available food sources
changes in the environment
higher reproduction rates
Answer:
Did you ever get the answers?
Explanation:
Any trait that is to be considered as a competitive advantage, trait must allow the individual to survive better and reproduce more in that environment.
What is evolution?
Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. It is decent with modification from preexisting species.
The trait that has the ability of relative fitness which means relative survival and relative reproduction shall be considered as more competitive. Both of these, criteria possess a competitive advantage.
Hooves are more advantageous for horses in the modern era because hooves are better suited for environments with a wider range of vegetation. Hooves help horses run farther and faster on the open prairies, helping them flee from predators and find fresh grass for grazing.
The species which is most likely to adapt and evolve to this change is an insect species with high reproduction rates and a significant mutation rate. This is because insect belongs to r-selected species that have fewer chances of extinction as compared to k-selection species.
The factor which is driven by random events is Genetic variations.
The factor which is most likely guarantee evolution rather than extinction is higher reproduction rates. Because a higher reproduction rate is a characteristic of r-selected species.
Therefore, the option which is correct for each specific question is briefly described.
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PLEASE HELP!!!
The unit talks about various astronomical tools, but satellites don't
make the list—why? Explain how satellites help us learn more about
the Earth from space and analyze whether they can also help us
learn more about space.
Answer:
NASA satellites help scientists study Earth and space. Satellites looking toward Earth provide information about clouds, oceans, land and ice. They also measure gases in the atmosphere, such as ozone and carbon dioxide, and the amount of energy that Earth absorbs and emits.
Explanation:
When compared to Eurkaryotic cells , prokaryotic cells are almost always
Answer:
There are several differences between the two, but the biggest distinction between them is that eukaryotic cells have a distinct nucleus containing the cell's genetic material, while prokaryotic cells don't have a nucleus and have free-floating genetic material instead
Explanation:
the____is the portion of earth that can support living things.
Answer:
The Biosphere
Explanation:
The biosphere is a thin life-supporting portion on Earth's surface, extending a few km into the atmosphere to the deep-sea. It is composed of living organisms and nonliving factors from which the organisms derive energy and nutrients.
DNAS1----- DNAS2---------mRNA---------- tRNA---------- Amino Acid
A
U
G
------------------------------------------------------------------------------------------------
T
A
A
------------------------------------------------------------------------------------------------
G
C
G
-------------------------------------------------------------------------------------------------
U
A
A
Complete the table
Answer:
a,u,g would give you u,a,c
t,a,a would give you a,u,u
g,c,g would give you c,g,c
u,a,a would give you a,u,u
Explanation:
hope this helps have a good weekend
Suggest three reasons why many amphibian species are endared
Answer:
what's endangering amphibian? (based on my note)
1) climate change (temperature//water level)
2) pollution and disease
3) habitat destruction
I hope it's help ♡︎
a.
Which of the following best describes daily temperatures in deserts?
hot during the day and cold at night
b. hot during the day and warm at night
C. cool during the day and very cold at night
d. they depend upon the type of desert and its location
Please select the best answer from the choices provided
Ο Α
ОВ
С
D
Answer:
A
As sand cannot hold the heat for long, it gets cooler as soon as the sun sets
Explanation:
A
Sana maka touilong makatulong
what is the role of tRNA in translation process?
Answer:
tRNA function at specific sites in the ribosome during translation which is a process that synthesizes a protein from MRNA molecule.
Explanation:
When a tRNA recognizes and binds to its corresponding codon in the ribosome, the tRNA transfers the appropriate amino acid to the end of the growing amino acid chain.
Which statement correctly describes the flow of energy in photosynthesis?
Answer:
DPhotosynthesis stores energy because energy is released when glucose is formed from carbon dioxide and water. The passage describes a condition that is inherited.
Energy from the Sun flows into plants through photosynthesis, which is also known as “putting together with light,” and eventually into humankind. In the end, humans are powered by the Sun's energy to eat and survive. Thus, option D is correct.
What describes the flow of energy in photosynthesis?Solar energy is converted into chemical energy during photosynthesis, which produces glucose from water and carbon dioxide. The by-product is the emission of oxygen. In the process of breaking down glucose during cellular respiration, oxygen is consumed, which also produces heat and chemical energy.
Photosynthesis is the tremendous energy flow that underlies electricity and is the foundation of all life. Whether we are vegetarians or not, we joyfully devour our food without giving the basic mechanism that provides us with this gift even the least thought.
Therefore, Because energy is released when glucose is created from carbon dioxide and water, photosynthesis saves energy. The paragraph mentions a hereditary ailment.
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Albinism, lack of pigmentation in humans, is an autosomal recessive disorder. A normally pigmented woman who has an albino uncle wishes to marry a phenotypically normal man whose sister is an albino. (Assume that these are the only individuals known to be albino in the two families) What is the probability that the couple's first child is an albino girl
Hi, you've asked an incomplete question. The missing options read;
a. 1/6
b. 1/9
c. 1/18
d. 1/36
e. none of these choices
Answer:
e. none of these choices
Explanation:
Remember, someone with an h.o.m.o.z.y.g.o.u.s gene basically inherits two identical alleles; one from their biological mother and the other their biological father.
In this scenario, the real concern should be to determine the probability that the girl child inherits a dominant allele that contains the gene that causes albinism. Hence, since there's little information about the gene type of the parents, a concise assumption can be made, thus rendering the listed options unlikely.
2. Which is true of the human circulatory
system?
A It transports oxygen and nutrients.
B It makes blood cells.
C It breaks down food and releases nutrients.
D It is the first line of defense against pathogens.
Answer: B
Explanation:
The circulatory system includes the heart, veins, arterioles, etc.. Includes blood as well
The skeleton of the human hand is similar in structure to
a. Bird's wings
b. Ancient fish
c. Dog's legs
d. All of the above
Answer:
a. Bird's wings
Explanation:
The graph shows the line of best fit for data in a scatterplot.
What does the line of best fit indicate about the correlation between the variables?
Answer: B
Explanation: Trust
Please help I am begging youuuu !???!?
Answer:
i think it might be D
Explanation:
very very very sorry if Im wrong
Which is a risk factor of endometriosis?
ОА.
Family history
O B.
Previous pelvic infection
Oc.
Abnormal uterus
D. All of the above
Which of the following statements is TRUE?
A.
Testosterone is the only male sex hormone.
OB.
Male sex hormones are called androgens.
O C.
Male sex hormones are called steroids.
OD.
All of the above
Answer:
B is the answer
Explanation:
Answer:
A.
[tex]\huge\mathfrak\red{Answer...} \\ \\ \small\mathfrak\purple{testosterone \: is \: the \: only \: male \: sex \: hormone...} \\ \\ \huge\mathfrak\blue{hope \: it \: helps..}[/tex]
Maribel brings her backpack to the lab. She is also given a set of lab materials. What is the safest way for Maribel to organize these items in the lab?
Both the personal items and the lab materials should be arranged neatly along the edge of the table.
Which of the following will limit a population's growth?
limited access to water
plenty of room for each organism
unlimited resources
low death rate, and high birth rate
Answer:
Limited access of water.
Provide an example of how the ocean plays important role in climate change