Answer:
Part D: pilus
Explanation:
Conjugative pili allow for the transfer of DNA between bacteria and thus evolve to be better pathogens.
The structure in bacteria that allows them to exchange genetic material and evolve is the pili
Bacteria piliPili (pilus, singular) are thin, proteinous structures located on the surface of bacteria that serves as:
they help bacterial cells to attach to surfacesthey serve as channels for the transfer of genetic materials during conjugationWhen genetic materials are transferred through the pilus, gene recombination occurs and bacteria evolve as a result.
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Oxygen is produced at what point during photosynthesis?
a. when ATP is converted into ADP
b. when CO2 is fixed
c. when water is split
d. when 3-PGA is converted into G3P
Sahara Desert
Which statements describe the Sahara Desert ecosystem? Select all that apply.
It has dry, thin soil.
It has a small amount of rain.
It has many different types of organisms.
Answer:
I would say all three describes the Sahara. Dry, thin soil sounds like sand, which is the soil in the Sahara Desert. This ecosystem definitely has a small amount of rain; that's what defines a desert. Along with that, the Sahara is also very diverse, inhabited by many organisms, from bugs, snakes, and other reptiles to rabbits, jackals, foxes, and even camels. Hope this helps!
The statements that best describe the Sahara Desert ecosystem are as follows:
It has dry, thin soil.It has a small amount of rain.Thus, the correct options for this question are A and B.
What is meany by an ecosystem?An ecosystem may be defined as the place or an area where individuals of different organisms live and interacts with each other for the purpose of food, space, resources, mating partner, etc.
In technical terms, the Sahara is not an ecosystem, it is a desert biome that contains multiple ecosystems. Organisms like Lizards, chameleons, skinks, and cobras are found among the rocks and dunes.
The lakes and pools of the Sahara also contain algae and brine shrimp and other crustaceans. The various snails that inhabit the desert are an important source of food for birds and animals.
Therefore, the correct options for this question are A and B.
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What causes ocean water near the poles to be colder than ocean water near
the equator?
A. The water is denser and saltier near the equator, so it holds more
heat.
B. Deep-sea vents pump steam into the ocean's conveyor belt near
the equator
C. Because of Earth's rotation, gyres near the poles flow clockwise.
D. The sun's rays strike the water at an angle at the poles.
Answer: Equator is closer to the sun, making it warmer there.
Explanation:
Answer:
d
Explanation:
When compared to prokaryotic cells, eukaryotic cells
4
A. are simple, smaller, and have DNA floating freely throughout the cell.
B. are complicated, larger, and have DNA captured in a membrane-bound structure.
C. are round and hard, unlike rectangular and soft prokaryotic cells.
D.
are able to move from place to place, unlike stationary prokaryotic cells.
Answer:
B. are complicated, larger, and have DNA captured in a membrane-bound structure.
Explanation:
DNA is found in the nucleus of the cell that is membrane bound structure.
plz help. how did Darwin almost ruin the data he had for his Galapagos finches?
Answer:
by nearly dropping the book in the ocean
I will mark u brainliest correct answer only !
Answer:
C
Explanation:
Which property is a physical property? *
Malleable
Molds quickly
Easy to digest
Does not burn
D) Does not burn
Explanation:
cause that's physical duh
neurons are activated by which of the following?
Answer:
Myelin sheaths protect, electrically insulate fibers and increase the speed of transmission of nerve impulses. What structural and functional type of neuron is activated first when you burn your finger? Unipolar (psuedounipolar) neurons that are sensory (afferent) neurons.
Answer:
A neuron is activated by other neurons to which it is connected. In turn, its own activation stimulates other connected neurons to activation
Explanation:
Carbon dioxide does not have a big effect on life on Earth because it makes up less than 1% of our atmosphere.
True
False
Answer:
F
Explanation:
Global warming. In the 1900's when cars were on the up-rise, the CO2 in the atmosphere only consisted of about 0.28%, and summers were only about 65 degrees. Now, in direct coloration with the rising CO2 levels, summers are averaged 78 degrees, reaching highs into the 100's.
ILL GIVE U BRAINLYIST
Answer:
D I think I'm not too sure
modify means to:
prohibit
pasture
fathom
alter
PLS HELP!!!!
Can you describe a frogs metamorphosis, including whether it is complete or incomplete
Explanation:
Frog undergoes a complete metamorphosis. It includes the egg, tadpole, froglet and then adult frog stages. In complete metamorphosis the hatchling does not resemble the parent and changes as it grows to be an adult.
During metamorphosis the tadpole will develop back legs first, then front legs. Around 6 weeks of life the mouth starts to widen. Sometime around 10 weeks the froglet’s, as it is now called, eyes start to bulge out and the tail begins to shrink and eventually disappear. When the lungs finish developing the froglet makes it’s way onto the land and, Ta-da! It’s a frog!
Hope this helps!
Cellular membranes enclose a cell and its contents from its environment. Establish which of the
following comprises cellular membranes.
A. Lipids
B. RNA
C. DNA
D. Microsphere
Answer:
The function of segregating the interior of the cell enclosure to the outside is known to occur by the function of the plasma membrane. These molecules comprising the plasma membrane is none other than lipids. Highly enriched hydrophobic tails of lipids interact with other lipids in a typical bilayer arrangement to regulate and control gene expressive Molecular and other crucial ions from moving in.
How is the attraction between 2 people influenced by biology?
Answer:
The biological part of our attraction lies in something called the major histocompatibility complex (MHC) or human leukocyte antigen (HLA) and the going theory is that opposites attract. Put another way, the more different our HLA types are from one another, the more likely we are to find each other attractive.
Explanation:
I hope this helps! ^^
☁️☁️☁️☁️☁️☁️☁️
1 point
What chemical compound is responsible for the rotten egg smell that is
typical of seal farts?
Hydrogen disulphide
Hydrogen monoxide
Hydrogen peroxide
Hydrogen chloride
Answer:
Hydrogen disulfide
Explanation:
Hydrogen disulfide , which is responsible for the rotten-egg scent, is toxic rather than simply smelly, if inhaled at concentrations above 700 parts per million.
It can be present at very low concentrations well below those considered to induce health effects. The scent of sulfide hydrogen does not affect your well-being.
Answer:
Hydrogen monoxide
Explanation:
It is very toxic to smell in farts
Are stars able to adapt to their environment? ANS can stars in the space respond to their changes and reproduce? Pls HELP. NEED FOR BIO
Answer:
Yes. Stars can adapt to their environment. And yes, stars can reproduce when the environment changes.
Explanation:
Answer: Stars are not living organisms. They do not reproduce. In a way, they are their own environment.
Explanation: Living organisms are made of the same "stuff" as the stars, and we depend on our star, the Sun, for energy. But the Sun can not reproduce another sun. It doesn't adapt. Forces of gravity within the galaxy and in the universe determine where stars travel, and their mass and temperature determine how long they will keep shining.
(PLS HELP DUE IN 5 MINS!) The pteropoda, or “sea butterfly”, is a tiny sea creature about the size of a small pea. Pteropoda are eaten by organisms ranging in size from tiny krill to whales. They are a major food source for the North Pacific juvenile. Their shells are made up of calcium carbonate. The photo provided is the shell of a pteropoda. The shell can dissolve within a 45 day period. What can one infer about what is causing the shell of the pteropoda to disappear while in a marine environment?
a) Carbon monoxide (CO) is being released by natural systems. Oceans are absorbing this excess of CO and the pH within the oceans is increasing.
b) Methane (CH4 is being released too quickly from burning of fossil fuels. Oceans are lowering their pH and ocean acidification occurs.
c) Natural sources are releasing an excess of CO2 to the oceans. The marine photosynthetic organisms are emitting too much oxygen. This is return is causing ocean acidification.
d) The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.
Answer:
The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.
Answer: d) The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.
What process is taking place in the image below?
You can see in this particular structure, there is a hydrogen bond between a hydrogen on the hydronium ion and the oxygen on the other water molecule.
Hydronium ions don’t exist in on their own, they’re required to have some way of balancing the charge that comes from the additional hydrogen ion. This balancing is typically done by the water surrounding the hydronium ion (H3O+H3O+) since water will outnumber the amount of hydronium atoms by orders of magnitude (there’s a lot more water than ions).
The hydronium ion in cold water is typically surrounded by 6 water molecules (probably oxygen towards the extra hydrogen but I can’t access the journal to confirm). There are some other structures like the one above, and another called the Eigen cation where the hydrogen is at the center of four water molecules (one is technically the hydronium). There’s also a very large structure that’s called the magic structure that has a hydronium ion surrounded by twenty water molecules (it’s called magic because it’s extra stable for its size).
Which of these is not true about water?
a. it's polar.
b. it can dissolve anything.
c. it is known as the universal solvent.
d. its molecules are attracted to each other.
Answer: B
Explanation: Water is capable of dissolving a variety of different substances, but not every substance. It can only dissolve somethings, not anything.
Obsessive-compulsive disorder is marked by unwanted behaviors that are repeated excessively and are uncontrollable.
Please select the best answer from the choices provided
T
F
Answer:
that is true
Explanation:
i have ocd and i have an uncontrollable urge to clean my trees
The statement "Obsessive-compulsive disorder is marked by unwanted behaviors that are repeated excessively and are uncontrollable." is a true statement. This is further explained below.
What is Obsessive-compulsive disorder(Disease)?Generally, an Obsessive-compulsive disorder is simply a personality condition marked by extreme orderliness, and a demand for control in interpersonal relationships.
In conclusion, Obsessive-compulsive disorder is marked by unwanted behavior.
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Negative feedback: If blood pressure is high, the blood vessels should
A. dilate (open up more)
B. constrict (get tighter)
Please help me answer these questions. I need a quick answer please.
1. True or False: Most of the forests you know started out as barren rock piles without any life?
2. The formation of this land is often the result of what two things?
3. The first organisms to move into these harsh growing conditions are known as?
4. True or False: Soil begins to form from the rocks only through the process of Erosion.
5. Decomposition of pioneer species provides what to soil?
6. What is formed during the third phase of primary succession?
7. Annuals only live for how many years?
8. What are two examples of Perenials?
9. True or False: Perennials grow year-round?
10. What is not an example of Softwood trees?
11. Pick all the examples of Hardwood trees *
* Pine
*Oak
* Fur
*Maple
*Elm
12. The ecosystem continues to change until eventually this final ____ is reached.
13. The process of a barren land being colonized by plants for the first time is known as...
14. True or False: Primary succession takes 100 years
15. What is the foundation of any ecosystem?
16. Why are plants needed first in an ecosystem?
17. How do Biomass and Biodiversity change during the process of ecological succession?
18. What can destroy a Climax Community?
19. True or False: A forest must be recovering from a disaster to be going through Primary Succession?
20. Is secondary succession faster or slower than primary succession?
Answer: 1. false
Explanation: life always has a starting place
4. In the process of precipitation, water vapor in air cools and becomes water droplets that clump around particles in air to form clouds.
Answer:
I don't know what you ask but just think yes
Explanation:
NEED HELP with this science
Answer:
I am not sure what you are asking but when pH is alkaline it will change the litmus paper to that blue color.
What often results in a woodland frequented by fire?
A. An understory of oak trees
B. A predominance of slow-growing trees
C. A predominance of pine trees
D. Barren land
SUBMIT
The one that results in a woodland frequented by fire is predominance of slow-growing trees. The correct option is B.
What is woodland?A forest is frequently also referred to as "woodland." But most frequently, the phrase is used by geographers to refer to a forest with an open canopy.
The topmost layer of vegetation in a forest is called the canopy. The crowns, or tops, of trees make up this structure.
Woodland contains a wide variety of plant and animal habitats, some of which need management to be created and maintained.
The complete spectrum of plant life, including trees, shrubs, climbers, perennial herbs, bulbs, grasses, sedges, mosses, and lichens, make up woodland.
Predominance of slow-growing trees is the factor that leads to a woodland that experiences frequent fires.
Thus, the correct option is B.
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A diploid cell contains 40 different types of chromosomes.
How many total chromosomes are in the diploid cell?
How many total chromosomes are in the haploid cell?
How many pairs of homologous chromosomes are in the diploid cell?
How many pairs of homologous chromosomes are in the haploid cell?
hello, I need some help with this
Answer:
I can't read the name of the graphs, but it is the one that is the graph that is in the bottom left corner (grassland is what I think it says.)
Explanation:
We are talking about equilibrium, so the graph is going to depict equality. As you can see, this graph is the most consistant when compared to the other graphs.
What word describes the majority of permanent genetic mutations?
-beneficial
-helpful
-minor
-harmful
HELP ASAP!!!
Radiation continues to be detected in the area surrounding the abandoned
nuclear power plant at Chernobyl, which experienced a nuclear accident in
1986. How does this fact illustrate a concern that people have with nuclear
energy as a source of electricity?
O A. It shows that any type of radioactive material will have harmful
effects on organisms in the environment.
O B. It shows that chain reactions are still happening in the reactors at
the nuclear power plant.
O C. It shows that radioactive materials released at nuclear power
plants remain radioactive and persist in the environment.
O D. It shows that nuclear power plants always leak a small amount of
radiation into the environment.
Answer:
C)
Explanation:
I hope this helps :)
Answer:
its D.
Explanation:
just took quiz
The Roberts family have had a large family garden for several years. Every autumn, after the first frost, they pull up the dead plants
and cover the garden rows with black plastic. When it is spring and planting time, they plant seeds though holes they have poked in
the plastic. Why do the Roberts use the plastic covering?
A)
The black plastic keeps the weeds from growing in the bare soil.
B)
The black plastic keeps the soil warm so the seeds will grow in the spring,
The black plastic helps the organisms that live in the soil survive the
winter
D)
The garden space will be covered with grass and animals will graze in the
area.
Answer:
ANSWER IS A
Explanation:
A black plastic mulch conserves soil moisture by preventing it from evaporating. Only the exposed soil in the holes where the vegetable plants are growing lose water to evaporation. This means that more moisture is available in the surrounding soil for plant roots, and you spend less time on watering the growing crops.
Explain why the Roberts family uses plastic covering.
Autumn is the season when trees lose their leaves. That is the reason Roberts family pull up the dead plants and cover the garden rows with black plastic.Spring is the season of planting. It is a season when plants spring from the ground and trees come into blossom, following winter and preceding summer.The plastic covering prevents weeds from growing on the bare soil.Weeds are unwanted plants grown at a place at a period of time. Any plants that grows where it is not wanted is weed.Therefore,
The reason why the Roberts family uses plastic covering is because "The black plastic keeps the weeds from growing in the bare soil".
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