please help meeeee !
Answer: D
Explanation:
Consider the diagram of the basic structure of a bacterium. A diagram of a bacterium is labeled. Part A is the cell membrane, part B is the flagellum, part C is the nucleoid, and part D is the pilus. Which of the labeled structures in the image allows bacteria to exchange genetic material and thus evolve to be better pathogens?
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.
More on bacterial pili can be found here: https://brainly.com/question/6168872
Which of the following is produced by the immune system to identify foreign cells?
antibodies
antigens
bacteria
colored dye
Answer:
im pretty sure its antibodies
Explanation:
Answer:
1sy option
Explanation:
edge 2021 :p
Which process has evolved to yield the GREATEST variation of offspring?
A.Meiosis
B.Mitosis
C.Replication
Meiosis has evolved to produce the greatest variation of offspring.
What is meiosis?Meiosis is a type of cell division that occurs in eukaryotic cells, such as those in animals and plants, to produce reproductive cells (gametes) that have half the number of chromosomes as the parent cell.
During meiosis, chromosomes pair up and genetic material through a process called crossing over, creating genetic diversity among the gametes. This diversity increases the chances that at least one offspring will be better suited to its environment and increase the survival chances of the species.
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Which of the following best describes DNA in a prokaryotic cell?
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).
what is the transfer of pollen from the anther to the stigma of a flower.
Answer:
Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.
:)
Answer:
Pollination
Explanation:
The transfer of pollen from the anther (male part) to stigma (female part) of a flower is called pollination.
Hope it helps and is correct:)
What is the region that is located between Mars and Jupiter and is labeled A
in the illustration?
Solar System
А
O A. The Kuiper belt
OB. The asteroid belt
O C. The terrestrial belt
OD. The comet belt
Answer:
asteroid belt
Explanation:
region between Mars and Jupiter became the asteroid belt. Occasionally people wonder whether the belt was made up of the remains of a destroyed planet, or a world that didn't quite get started. However, according to NASA, the total mass of the belt is less than the moon, far too small to weigh in as a planet.
A full moon appears white to us on earth because
Answer: when the moon's light (from the sun) is being shone through the atmosphere the blue hues are scattered but the red ones are not.
Explanation:
Which type or types of energy does a blimp circling above a sporting event have?
A) kinetic energy and gravitational potential energy
B) kinetic energy and elastic potential energy
C) potential energy only
D) kinetic energy only
Answer:
A
Explanation:
Answer:
A is correct
Explanation:
Which health effects are concerns for people who get exposed to the low
levels of radiation that might remain in the environment in the years after an
accident at a nuclear reactor?
A. First-degree burns from thermal pollution
B. Exposure to parasites that can attack the digestive system
C. Respiratory diseases resulting from air pollutants
D. Thyroid cancer and other cancers
a
Answer:
D. Thyroid cancer and other cancers
Explanation:
Ap€x
Explain how the sugars, phosphates, and nitrogenous bases in one strand of DNA connect to a complementary strand during replication
Answer: One strand of DNA binds to another via base complementarity.
Explanation:
The two strands of the DNA double helix are connected through nucleotides. There are hydrogen bonds between the nitrogenous bases. Each nucleotide has a sugar, nitrogenous base and phosphate group. The phosphate group and sugar forms the backbone of the DNA double helix. The nitrogenous base form pairing with each other via base complementarity. Purines are adenine and guanine and pyrimidine are cytosine and thymine these are nitrogenous bases. The adenine bonded with thymine via two hydrogen bonds and cytosine with guanine with three hydrogen bonds. These nitrogenous bases help in replication process.
The two strands of DNA are actually connected by hydrogen bonds (H-bonds) between the nitrogenous bases.
There are 2 hydrogen bonds between adenine and thymine, and 3 hydrogen bonds between cytosine and guanine.
Why are sugar-phosphate and nitrogenous bases important to DNA molecules?The sugar-phosphate backbone is a significant component of DNA's double helix structure.
The structure of DNA is tied to its function. The pairing of the nitrogenous bases that are connected to the sugar-phosphate backbone play a key role in the ability of DNA to store and transfer genetic information.
Thus, base complementary is the reason.
To learn more about nitrogenous bases click here:
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If a cell blocked the entrance of a specific molecule, which organelle would perform that function?
Scientist have inferred the structure of Earth's interior mainly by analyzing
A. The Moon's Interior
B. The Moon's Composition
C. Earth's Surface Features
D. Earth's Seismic Data
Answer:
Earth's seismic data
Explanation:
*
Homologous chromosomes are pairs of chromosomes with
Answer:
Identical genes
Explanation:
i hate biology stggg
Answer:
I think it would be A
Explanation:
Plz help!!?? Due today
Answer:
6) unicellular means organisms contains one cell while multicellular means organisms contain more than none cell.
7) Each cell have different organells that carry different functions. For example, a cell have a organell named nucleus and its function is to store DNA
8) eukaryotic meas organisms with many cells aka are multicellular and prokaryotic means organism with single cells aka are unicellular.\
9) bunch of tissues together forms organs. and bunch of organs together forms organ system
Explanation:
WILL GIVE BRAINLIEST
Classify each of the following as an example of predation, parasitism, competition, mutualism, or commensalism
1. Kudzu brought into North America is rapidly spreading through the southeastern U.S.
2. It is estimated that stray cats are responsible for the deaths of over 40 million birds in Wisconsin alone each year.
Answer:
1=predation 2=mutualism
Explanation:
Which of these best describes the tiny leg bones that some whales have, which do not aid in their movement or serve any other function?
O structures that grow and improve in function as they are used
O structures that function at certain times of the year or under certain conditions
O structures that will become adaptations when the environment changes
O structures that have lost all or most of their function over evolutionary time
Answer:
D. structures that have lost all or most of their function over evolutionary time
Explanation:
the question states that the leg bones are almost entirely unused because of evolution
The study of change over a period of time is called evolution.
The correct answer of the following is D.
The change in the species over the period of time is called evolution. It is necessary to adapt itself in order to survive in nature.
According to the lamark, it is said that the organs which are no longer used in the body will become vestigial and will be removed from the body over a period of time.
According to the question, the small bones in the whale is might have functioned in the ancestor period but not in the current time due to the course of the evolution.
Hence, the correct answer is D that structures that have lost all or most of their function over evolutionary time.
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1. An unstable nucleus releases radiation in the form of a helium particle. What process is occurring!
a) Fusion
b) Fission
c) Alpha Decay
d) Beta Decay
An unstable nucleus with too many protons emits energy and an alpha particle during alpha decay. An alpha particle is actually a helium nucleus because it has two protons and two neutrons. A nuclear equation can be used to represent alpha decay. Thus, option C is correct.
What is the alpha decay releases of radiation from helium?When an unstable nucleus changes to another element, a nuclear process called “alpha decay” produces a particle consisting of two protons and two neutrons. The helium nucleus that is being ejected is known as an alpha particle.
An alpha particle is released when a nucleus becomes unstable due to having an excessive number of protons. An alpha particle is a helium nucleus, since it has two protons and two neutrons. This is the alpha decay.
Therefore, Each of the two protons and two neutrons that make up an alpha particle is a helium nucleus that has lost its planetary electrons.
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A student reads that deer mice that migrated to the hills of Nebraska originally had dark colored
coats. Over many years, due to a mutation, the coat color of the mice changed to a lighter color to
blend in easily with the sand. Which argument summarizes the mutation in deer mice?
a) It is a harmful mutation as it caused a change in the original coat color of mice.
b) It is a beneficial mutation as it helped the mice survive in their new surroundings.
C) It is a neutral mutation as the change in coat color did not affect any body functions in the
mice, and only helped the survival of the deer mice living in Nebraska.
d) It is a neutral mutation as only the deer mice living in Nebraska were affected, and all other
populations were unaffected.
The argument which summarizes the mutation in deer mice is It is a beneficial mutation as it helped the mice survive in their new surroundings.
What is mutation?A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations. Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
Our cells are constantly undergoing mutations, yet very few of these have any negative effects on our health. Compared to what we typically see in science fiction movies, this is completely different.
A mutation is never so advantageous in real life that it makes someone a superhero or does anything strange like give them wings.
Therefore, The argument which summarizes the mutation in deer mice is It is a beneficial mutation as it helped the mice survive in their new surroundings.
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A sunflower is placed facing away from a window. The following day, the sunflower is facing the window. This is due to
Answer:
because plants faces and gets sunlight to grow
Explanation:
horizon.
At night, in its absence, the sunflowers face east again, anticipating the sun’s return.
They do this until they get old, when they stop moving. Then, always facing east, the old flowers await visits from insects that will spread their pollen and make new sunflowers. Those flowers too, will follow the sun.
3 interesting facts about strokes
Answer:
Stroke Facts
In 2018, 1 in every 6 deaths from cardiovascular disease was due to stroke.
Someone in the United States has a stroke every 40 seconds. ...
Every year, more than 795,000 people in the United States have a stroke. ...
About 185,000 strokes—nearly 1 of 4—are in people who have had a previous stroke.
I gave you more than three just in case you don't think of one
Why coocked food spoil fast but uncocked food spoil slowly
What is one reason that pumpkins are more closely related to corn plants than to edible mushrooms?
Answer:
they both make their own food (pumpkin and corn)
Explanation:
QOD: have you downloaded Ecosia yet? why not? do it. n o w.
Answer:
What's Ecosia?
Explanation:
What is a food web?
1. How several food chains are related
a food chain with two levels
2. A group of animals
3. A producer and consumer relationship
Answer:
Q no. 1
Explanation:
1) How several food chains are related a food chain with two levels
Answer:
1 How several food chains are related a food chain with two levels
Transcription is the process in which
DNA is used to make protein
DNA is used to make single stranded mRNA
DNA is used to make double strand mRNA
DNA is used to make more DNA
Answer:
d
Explanation:
Pollination is an example of which of the following ecological relationships?
A) Predation
B) Mutualism
C) Commensalism
D) Parasitism
Answer:
B.) mutualism
thanks me later
How did the temperature relate to the “recommended temperature limit” (solid horizontal red line)?
Will give extra points for right answer or explanation
Answer:
The “recommended temperature limit” indicates limit of the temperature that is good for our world.
Explanation:
The temperature related to the “recommended temperature limit” means that in the graph there is a limit of temperature for our world's environment. if the temperature is between this limit, there is less or no adverse effect on our environment while on the hand, if the temperature exceeds from this limit, then it adversely affected our world because the concentration of carbondioxide gas in the atmosphere increases due to this increase temperature..
