Answer:
The answer is (A.
Explanation:
Which of the following best describes the capsid of a virus?
Explanation:
Capsids are made of protein subunits called capsomeres. ... Capsids are made of protein subunits called capsomeres, they protect the nucleic acid, they function in viral entry, and their shape is defined by the way in which their subunits are linked together.
All of these characteristics are accurate descriptions of viruses. Therefore option D is correct.
A. Viruses are considered to be non-living: Viruses do not possess the characteristics of living organisms, such as the ability to metabolize, grow, or reproduce on their own. They are dependent on host cells to carry out these functions.
B. Viruses possess a capsid and nucleic acid: A virus consists of genetic material, either DNA or RNA, enclosed in a protein coat called a capsid. The capsid protects the viral genetic material and facilitates its entry into host cells.
C. Viruses are obligate intracellular parasites: Viruses require a host cell to replicate and complete their life cycle. They cannot reproduce or carry out essential metabolic processes without infecting a host cell.
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Your question is incomplete, but most probably your full question was.
Which of the following best describes viruses?
A. They are considered to be non-living.
B. They possess a capsid and nucleic acid.
C. They are obligate intracellular parasites.
D. All are correct.
Explain the reactions from
Glycolysis, link reactions,
Krebs cycle to Electron
transport chain
Explanation:
Glycolysis is the stage where glucose is broken down into 2 pyruvates (3 carbon compounds). This occurs in the cytoplasm and produces 2 ATP molecules. The pyruvates enters the mitochondria and enters the link reactions where it combines with co enzyme A (CoA). Decarboxylation ( removal of CO2) and dehydrogenation (removal of H) occurs here. Since CO2 is removed from the pyruvate it means a carbon is removed. This produces a 2 carbon compounds called acetyl. The acetyl compound is what combines with the CoA to form a compound called acetylCoA. This compound then enters the Krebs cycle.
The CoA co enzyme leaves and the acetyl reacts with a four carbon compound called oxaloacetate. This then forms a 6 carbon compound compound called citrate. A series of dehydrogenation and decarboxylation reactions occur to convert the 6 carbon compound back to oxalaoactate( the 4 carbon sugar). An ATP molecule is formed during one spin of the Krebs cycle.
The electron transport chain is where the reduced NAD (formed from dehydrogenation in glycolyisis, the link reactions and Krebs cycle) and Reduced FAD ( formed from dehydrogenation in the krebs cycle). molecules pass along a series of electrom carriers where they release energy that will be used to make ATP. Oxygen is the last electron carriers
I tried to sum it up as best as possible. If you want in detail explanations of each then I can explain it also.
In radioactive dating, scientists determine the age of a fossil by
Explain how the cell division of cancer cells like these are misregulated. Identify genetic and other changes that might have caused these cells to escape normal cell cycle regulation
Answer:
Due to non-functioning of protein.
Explanation:
The cell division of cancer cells like these are misregulated because they can't be control by the proteins that is responsible for the control cell division. The cancer cells can multiply without any growth control factors, or growth-stimulating protein signals that control its growth. There are some proteins that is responsible for control of cell division but due to mutation that protein of substance stop working and the cancer cell grows uncontrollable.
A fetus possesses a mutation that causes the diencephalon region of the developing brain to cease growing. Which structures in the mature brain will be missing/abnormal if the fetus survives to birth and childhood
Hypothalamus, pineal gland, and thalamus. Sensory abnormalities, visual-field deficiencies, and alterations in behaviour are all potential consequences of thalamic injury.
Thalamus, hypothalamus, subthalamus, and epithalamus are the four principal diencephalon subdivisions. Recognizing sensory stimuli and relaying sensory impulses to the cerebral cortex (apart from olfaction) are the main duties of the thalamus, which is the brain's biggest division.
One of the primary vesicles that create the brain during embryogenesis is the diencephalon. One of the three main germ layers, the ectoderm, is responsible for forming a neural tube during the third week of development.
Here are the structures that make up the diencephalon:
posterior pituitary epithalamus, thalamus, and hypothalamus
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Photosynthesis creates ______
A.
chlorophyll
B.
sugar
C.
carbon dioxide
D.
energy for the cell
For a cell to successfully receive a message from a hormone, which of the following must occur?
A: The hormone must attach to the cell's receptor.
B: The hormone must enter the cell.
C: The hormone must produce neurotransmitters.
D: The hormone must be destroyed.
Answer:
B. the hormone must enter the cell
Answer:
A: The hormone must attach to the cell's receptor.
Which of the following is TRUE about the water cycle?
I. Evaporation occurs when liquid water becomes a gas (water vapor). Transpiration is basically evaporation from living things such as plants.
II. Condensation occurs when water vapor becomes liquid, forming clouds.
III. Rain and snow are examples of precipitation. Runoff occurs as a result of precipitation.
IV. Bacteria are very important to the water cycle.
Answer:
I, II, III, IV
Explanation:
Evaporation happens when a liquid turns into a gas.
Condensation happens when water vapor turns into a liquid.
Examples of precipitation is rain and snow. Runoff does happen because of precipitation.
Bacteria fixes nitrogen into forms by usable plants. Bacteria is very important to to the water cycle.
Which of the following statements is true?
A. All living things are made of the same elements.
B. Every organism is made of different elements.
C. Every species is made of different elements.
D. All matter is made of the same 10 elements.
Answer:
C
Explanation:
its written that every living thing is made of different objects
One of the pieces of evidence for evolution that Charles Darwin collected on his travels aboard the HMS Beagle was the observation of fossils of extinct animals and similar, but noticeably different species. Giant ground sloth fossils were very similar in shape to the bones of sloths that inhabited the regions of South America he was exploring. The main difference was the size, as the ground sloth fossils were significantly larger that the bones of the sloths he captured alive. What was a conclusion that Darwin was able to arrive to based on this piece of evidence
Answer: Darwin was able to arrive at a conclusion that there was no relationship between the fossils of the ground sloth and the bones of the captured sloths that currently reside in South America.
Explanation:
Evolution is defined as the sum total of adaptive changes that have taken place over a very long period of time. It leads to the development of new species from earlier ones. Evolution is an extremely slow process. It is difficult to obtain direct evidence of evolution in action. However, scientist such as Darwin, have gathered a great deal of indirect evidence that supports the theory of evolution. These evidence comes from many sources including:
--> fossils records
--> biochemical similarities
--> molecular records
--> Comparative anatomy and
--> embryology.
FOSSILS RECORDS shows the existence of species that are now in extinct which lived on Earth during different periods of the planet's history. They provide evidence that organisms from the past are not the same as those found today due to adaptive changes that has occurred over a long period of time on the organism in order to survive in its environment.
There was no relationship between the sloths because of the difference in BONE MASS.
help please it’s a text
Answer:
c I think ( why does it need to be 20chacters long )
Explanation:
that all I got
Answer:
nooooooo
it's D
and can u now please mark me brainlist
What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?
A. Fossilized remains of archaebacteria
B. Double membranes of the organelles
C. Similar methods of reproduction
D. Presence of circular DNA
Answer:
A. Fossilized remains of archaebacteria
Explanation:
One example of evidence that does not support the theory is that Mitochondria and chloroplasts are much larger than prokaryotic cells.
ph del repollo?? cual es pls!!
Answer:
5.6
Explanation:
lo saqué de esta pagina, espero te sirva para más cosas :))
http://www.food-info.net/es/qa/qa-fp65.htm
PLEASE HELP!!!! WILL GIVE BRAINELIST
Please summarize to answer, how do cells undergo differentiation to form the numerous types of cells in the body?
Cellular differentiation, or simply cell differentiation, is the process through which a cell undergoes changes in gene expression to become a more specific type of cell. The process of cell differentiation allows multi-cellular organisms to create uniquely functional cell trt42ypes and body plans. The process of cell differentiation is driven by genetics, and their interaction with the environment.
All organisms begin from a single cell. This single cell carries the DNA coding for all the proteins the adult organism will use. However, if this cell expressed all of these proteins at once it would not be functional. This cell must divide repeatedly, and the cells must begin the process of cell differentiation as they divide. The cell lines begin to emerge, and the cells get more and more specific. Eventually, an entire organism is formed with hundreds of different cell types from this process of cell differentiation.
The original mass of cells, which have not undergone differentiation, are known as stem cells. Unlike normal cell division, which creates two identical daughter cells, the division of stem cells is asymmetric cell division. In this case, one of the cells remains identical to the parent stem cell. In the other cell, chemical triggers activate the process of cell differentiation, and the cell will start to express the DNA of a specific cell type. Stem cells which can differentiate into entire organisms are known as embryonic stem cells and are said to be totipotent.
By contrast, the body also has many cells which are only pluripotent. These cells have already undergone some cell differentiation. These stem cells can only divide into a narrow range of cell types. Bone marrow, for instance, contains somatic stem cells which can only become red blood cells. These cells are necessary for the constant replenishment of blood cells, which are mostly inactive besides their oxygen-carrying ability.
Cell Differentiation Examples
In Animals
After the process of fertilization in animals, a single-celled organism called the zygote is formed. The zygote is totipotent, and will eventually become an entire organism. Even the largest animal on Earth, the blue whale, starts as a single cell. The complex tissues and organ systems, which are completely different in their form and function, all come from the zygote. The process of cell differentiation starts early within the organism. By the time the gastrula has formed, the cells have already started expressing various portions of the DNA.
These changes drive the first folding processes within the embryo. As the tissues continue to form, some cells begin releasing hormones, or chemical triggers which signal various cells to react. Hormone signals direct the expression of DNA in various body parts, which drives their cell differentiation further. In humans it only takes a little over a month for a rudimentary heart and circulatory system to form.
As the systems continue to form, many of the stem cells lose their totipotency, themselves undergoing cell differentiation. This allows for faster production of specialized cells, which the growing organism needs to sustain its growth and enter the world with success. Through cell differentiation, tissues as different as brain tissue and muscle are formed from the same single cell.
Answer:
sana po nakatulong thanks❤
PLEASE ANSWER ASAP I AM BEING TIMED!!!
Discuss how destructive fishing practices damage coral reefs.
please explain. this is a written answer. only answer if you are 100%
Answer:
Apart from poisoning the fish, this toxic fishing activity kills animals that are essential to the aquatic environment, such as corals, and provide food and shelter for a number of marine species. One square meter of coral reef is lost with every fish captured using this method. Also, overfishing has the potential to deplete main reef habitats and damage coral habitat. In many places, rapid human population growth, increased demand, the use of more advanced fishery technology, and insufficient maintenance and regulation have resulted in the extinction of key coral species and habitat damage.
BTW, I used my own words
Can I have brainliest?
Answer:
When poisoning the fish other animals around in the aquatic envoiroment like for example corals, which porvide food and shelter for many species of underwater creatures. If this is not stopped coral reefs will become extint which is really bad not only for the species which feed and live there but also to the enviorment.
Explanation:
planet earth King Penguins and Fur Seals King Penguins and Fur Seals are both designed for swimming, and thus are very clumsy on land. With that in mind, answer these questions: Why do the penguins come onto land at all
Answer:
For breeding and moult purpose.
Explanation:
The penguins come onto the land for breeding and moult purpose. They will also spend time ashore during non-breeding months of their life cycle. They are only active at night on land. They leave the colony early in the morning before sun-rise, and return to the colony after dark with food with it in order to feed their families. They can't breed in water like fish so they comes to the land for breeding.
PLEASE ANSWER ALL THREE QUESTION ABOUT BIOLOGY!! WILL GIVE BRAIN!!
Explanation:
1).True
2).false
3).false
Answer:
Sorry, it wouldn't really let me post it :\
1. Use the list below to complete the following statements.
adapt extinct mutation adaptations fittest natural selection criticism fossil saber-tooth tiger Darwin giant sloth survival evolution glyptodont variation
a. The term describes living things that are best suited to their environment.
b. Species that survive are the ones that make or meet changes.
c. Florida has a rich record.
d. Two examples of land animal fossils found in Florida are the ________ and the ______.
e. Some animals unable to adapt to the changing environment became ___________.
f. Living things _______________ over time to meet their changing environment.
g. This biologist, __________________, studied evolution in the 1800s.
h. The ________________ was a giant, armadillo-like animal with a spiked tail that once lived in Florida.
i. The Origin of Species is a book written in 1859 about ___________________.
j. Nature selects the fittest for ______________________because they have useful traits.
k. Changes may occur in animals due to changes in the sequence of base pairs in their DNA, and this is known as a __________________.
l. Oldfield mice show ____________________ in the color of their fur.
m. The survival of the light-colored oldfield mice on Florida's Gulf Coast is an example of the process called ________________________.
n. Evolution is a controversial theory that has survived much _________________.
2. Write a micro-theme using and explaining the following terms.
a. "Survival of the fittest"
b. Adaptation
c. Evolution
3. Use the list below to write the correct term for each definition below.
adaptation
extinct
gene
Darwin
fittest
mutation
evolution
fossils
natural selection
_________________________ a. A change in genes that causes a change in a particular trait
_________________________ b. Describes a species that no longer has any living representatives
_________________________ c. A trait that a species develops over generations which helps it to survive
_________________________ d. a unit of DNA that determines a specific trait in the organism
_________________________ e. The survival of organisms best fit for the environment
_________________________ f. Changes in living things over time
_________________________ g. Remains of organisms that lived in the past
_________________________ h. Best suited to survive in its environment
_________________________ i. The biologist who developed and offered evidence of the theory of Natural selection
4. Answer the following using complete sentences.
a. How does genetic variation create new species over time?
b. How does changing the proteins produced in a cell alter what an organism does?
c. In terms of evolution, why do animals that are preyed upon (eaten) likely to have a high number of offspring?
d. Why is it vital that a scientist recognize his or her own biases and that they be open to criticism?
5. We chose to spotlight Florida animals because The Ogburn School is located in Florida. Your next assignment is to conduct an internet search to discover information related to animal diversity. You may choose to research animals in the state you live in. If you live in Florida you may choose to research a Florida endangered species, or one from another state or country. Your research must include the following:
a. species of animal
b. location of animal (state or country)
c. the animal's status (extinct, endangered, threatened, etc.)
d. reason for status (why is animal extinct, endangered, threatened, etc.)
e. type of habitat needed for survival
f. conservation efforts on the animal's behalf
g. prospects for the future of this animal
Answer:
d=alligators, deers
E=extinct
f=reproduce
g=Mr. Kinley
H=anteater
I=Eveloution
J=survival
K= ???
L or I? = bones
Explanation:
Make me brainliest no matter what
Answer:
for k is mutation
Explanation:
which type of transport requires energy to move a molecule
A. Active transport
B. Diffusion
C. Osmosis
D. Passive transport
Answer: The answer is “A. Active transport.”
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For a population to be in Hardy-Weinberg equilibrium, five assumptions must be true. Choose two of these and explain them briefly.
Answer:
To maintain this balance, the Hardy-Weinberg Equilibrium Principle states that a population should meet five main assumptions. There should be random mating, large population size, no mutation, no selection on the gene in question, and no gene flow in or out of the population.
Explanation:
Which of the following can occur around a subduction zone?
Two parallel mountain ranges commonly develop above such a subduction zone – a coastal range consisting of sedimentary strata and hard rock lifted out of the sea (accretionary wedge), and a volcanic range farther inland (volcanic arc). Ancient magma chamber rocks can be exposed if subduction stops and the volcanoes erode away.
Which of the following would be examples of concentration gradients in everyday life? PICK ALL THAT APPLY.
Running up a slide at the playground.
A drop of food coloring spreads out into a glass of water.
The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.
The air freshener that you sprayed in the living rooms spreads out.
Answer:
A drop of food coloring spreads out into a glass of water.
The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.
The air freshener that you sprayed in the living rooms spreads out.
Explanation:
A difference in concentration of molecules in physical space is called a concentration gradient. An easy to understand example from everyday life is the application and subsequent fading of perfume or aftershave scent.
Answer:
A drop of food coloring spreads out into a glass of water.The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.The air freshener that you sprayed in the living rooms spreads out.Explanation:
These are the examples of concentration gradients in everyday life.
8. The diagram below shows the shift in the spectrum for hydrogen light from several different sources in the universe.
What is the best argument that can be made from this data?
More distant galaxies are moving toward us faster.
More distant galaxies are brighter.
More distant galaxies are not as bright.
More distant galaxies are moving away faster.
Answer:
more distant galaxies are moving away faster.
the shift towards red (Doppler effect like with sound on Earth) is the indication.
Explanation:
what did this have to do with biology ?
and by the way, this is also something I debate severely in scientific communities, because yes, the red shift is there. but "more distant" also means "more in the past", so that the data shows us actually that things in the past moved faster away. not necessarily today ...
Sasha uses a basketball and a tennis ball to represent two astronomical bodies based on their sizes.
Which of the following representations is the most correct based on what Sasha has? (5 points)
a
The basketball represents Earth and the tennis ball represents the solar system.
b
The basketball represents the moon and the tennis ball represents the solar system.
c
The basketball represents the solar system and the tennis ball represents Earth.
d
The basketball represents the solar system and the tennis ball represents the Milky Way.
Answer:
I believe the answer is C.
Explanation:
This is because the basketball is the bigger object here so that should represent something bigger like the solar system. Then the tennis ball would represent earth because it is the smaller object here.
2. Define ecosystem in your own words.
8. Which national capitals are located within the rainforest area?
Rainforests are the area which covers mostly evergreen forests with tall trees. It is located in capitals like Manaus, capital of Amazonas estado, northwestern Brazil.
What are rainforests?Rainforests are the areas of tall, evergreen forests. It is characterized by closed tree canopy, moisture dependent vegetation, epiphytes, lianas, etc.
Tropical rainforests are located generally in Central and South America, western India, Southeast Asia, etc.
The national capitals that have this type of forest is Manaus, capital of Amazonas estado, northwestern Brazil.
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Define 4 types of teeth(incisors,canines, premolars and molars)
Who answered correct will get a the brainliest answer and a free follow.Have a nice day
Astronomers use the light year to describe the relationship between objects in space, for example, the andromAda galaxy is 2.5 million light years from earth which of the following units is most similar to the light year
A. Gram
B. Second
C. Kilometer
D. Degrees Celsius
Translation is the process of:
a. mRNA being decoded into proteins
b. DNA being copied into mRNA
c. DNA being duplicated
d. mRNA is being copied into DNA
Answer:
A
Explanation:
Because Translation refers to the process of creating proteins from an mRNA template.
In some forests are cleared by burning .This produces carbon dioxide and ash.
(a) Outline the environment effects of am increase in carbon dioxide in the atmosphere as a result of burning forests.
(b) The ash helps crops to grow bcuz it is rich in minerals, such as magnesium ions ,but it is deficient in nitrate ions.
Explain why nitrate ions and and magnesium ions are important for plants.
Answer:
B. The ash helps crops to grow because it is rich in minerals, such as magnesium ions, but it is deficient in nitrate ions.
Explanation:
After the forest is being burned, ash and carbon dioxide increase on the surface of the ground. It is good for the plant to grow because the plant uses carbon dioxide for photosynthesis, and its root absorbs energy from the ground where ash is very good for the plant to grow.