What is a virus and what cause a viruses​

Answers

Answer 1
Meaning:A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.

Causes: Viral infections occur when a virus enters the body and invades the inside of the body's cells in order to reproduce. If the body's immune system is unable to fight off the virus, it multiplies and spreads to other cells, repeating the process and leading to a widespread infection.
Answer 2
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea

Related Questions

3. How do nutrients and other materials move in fungi?

Answers

Answer:

Nutrients and other materials from the environment are absorbed through mycelia. The branching mycelia have a high surface-area-to-volume ratio which allows the  absorption of nutrients to be more efficient. Fungi may even digest nutrients by releasing enzymes into the environment.

Explanation:

I have a strange feeling that this isn't the answer you were looking for.

Which elements are likely to have similar properties to calcium because they have the same number of valence electrons as calcium

Answers

Answer:

The correct answer would be - strontium, magnesium, beryllium.

Explanation:

As we know that the number of the same valence electrons is most likely to exhibit similar physical and chemical properties so the elements of the particular group in the periodic table have a similar number of physical and chemical properties and a similar number of the valence electrons.

For example, group 2 elements are known as alkaline earth metals, and strontium, magnesium, beryllium, and calcium are the same group elements thus, they have the same chemical and physical properties as they have 2 valence electrons.

How does the environment influence populations of organisms over multiple
generations?

Answers

Answer: Species can change over time in response to changes in environmental conditions through adaptation by natural selection acting over generations. ... Evolution results primarily from genetic variation of individuals in a species, competition for resources, and proliferation of organisms better able to survive and reproduce.

Explanation:

All of these ___ help to block, trap or flush pathogens out of the body.

What are the following 6-
A-e???

Answers

Answer:

natural barriers

Explanation:

skin, mucous membrane, tears, earwax, muscus, stomach acid

Which form of water is not considered as a resource? A) groundwater B) glacial ice C) ocean water D) water vapor E) surface water

Answers

Answer:

D. water vapor

Explanation:

water vapor is a gas and could not be used as a resource

n rabbits, coat color is affected by a series of alleles with a hierarchy of dominance such that C >Cch>Ch>C. Each allele is dominant over all the alleles listed to its right. C codes for full color, Cch codes for chinchilla, Ch codes for himalayan (white with black extremities) and C codes for albino. A chinchilla rabbit is mated to a himalayan rabbit. Each of these rabbits had one albino parent. What are the phenotypes of the offspring and in what frequencies will they be produced

Answers

A gardener can increase the number of dahlia plants in an annual garden by either buying new bulbs each year or dividing the existing bulbs to create new plants . The table below shows the expected number of bulbs for each method

Part A
For each method,a function to model the expected number of plants for each year

Part B
Use the Functions to Find the expected number of plants in 10 years for each method.

Part C
How does the of plants in five years compare to the expected number of plants in 15 years !Explain how these patterns could affect the method the gardener decides to use.

What is a density dependent limiting factor that affects population size?
-Drought
-Climate
-Natural Disasters
-Disease

Answers

Answer:

Disease

Explanation:

In Ecology, certain factors that affect the size of a population can either be dependent on size or not. Density-dependent factors are those factors that affect population of organisms in dependence of how dense the population is. Examples of these density dependent factors are diseases, predation etc.

For example, a certain disease will spread faster among a population of organisms whose size is dense but slower in a scarcely densed population. Hence, disease as a factor is dependent on population size. Note that; Drought, Climate, and Natural Disasters will wipe out a population irrespective of its size.

Answer:

Disease

Explanation:

Which of the following correctly describes a nucleus?
All cells have a nucleus
The nucleus is where mitosis occurs
The nucleus gives the cell energy
The nucleus is where plants make their own food

Answers

The nucleus is where mitosis occurs.

Answer: B. The nucleus is where mitosis occurs

Explanation: B. The nucleus is where mitosis occurs

can someone help???? Question: In what domain would humans be included?
A Eukarya
B Archea
C Bacteria

Answers

Answer:

A Eukarya

Explanation:

Answer:

A Eukarya

explanation: Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope

When light passes into a more dense material, it bends away from the normal

True or false

Answer : Flase

Answers

(つ ^_^ )つ Hey There!

Answer : False, When light passes from a more dense to a less dense substance, (for example passing from water into air), the light is refracted (or bent) away from the normal.

~Hope this Helps!~

The answer is false!

HELP ME PLEASE SOMEONE :(

Answers

Answer:

D

Explanation:

The other person is right, pls give them brainliest pls?

In horses, a black coat is dominant over a brown coat. Both parents are heterozygous.

What is the probability that their offspring will have a BLACK coat?

What is the probability that their offspring will have a BROWN coat?

Answers

Black: 75%
Brown: 25%

Austin made the claim that meiosis provides an advantage for sexually reproducing organisms by ensuring genetic variation

Which statement explains why he is correct

A. Meiosis allows the offspring produced during sexual reproduction to grow and develop

B meiosis joins together the sex cell during sexual reproduction to produce new offspring

C meiosis produces sex cells that are joined during sexual reproduction to produce offspring

D meiosis produces the body cells that join to form new offspring during sexual reproduction

Answers

Answer: C. meiosis produces sex cells that are joined during sexual reproduction to produce offspring

Explanation:

Meiosis is also called as reduction division in this the parent diploid cell divides twice to produce four haploid daughter cells. The daughter cells so produce after cell division contain half the number of chromosomes then that of the parent cells. The germ cells in males and females divide twice or meiotic division occurs in them twice to produce four daughter haploid gamete cells that are sperms (male) and ovum (oocyte) (female). These male and female gametes fuse during sexual reproduction. The sperm fertilizes an ovum to produce zygote.

Answer:

c

Explanation:

Starting with spore dispersal, and identify adaptations in the life cycle of the bryophyte for living in a terrestrial environment (ie, in air, without water surrounding the plant body). What are new stresses associated with living on land, and what morphological or physiological features did the first land plants have to evolve to cope with these stresses

Answers

Answer:

Stresses such as lack of nutrients, space, competition and water availability.

Explanation:

Lack of nutrients, space, competition and water availability are the stresses that the bryophyte can experience by living on land. The morphological or physiological features such as lowering transpiration rate by stomata, attain specialized structures to collect sunlight and fulfill water requirement by absorbing water from the air if no water is available in the soil etc are the features that the plant has to attain to cope with these stresses.

The smooth endoplasmic reticulum Group of answer choices converts sunlight into chemical energy. stores water, nutrients, and enzymes. is the site where lipids destined for other cellular compartments are manufactured. produces the energy needed to run chemical reactions in the cell.

Answers

Answer:

is the site where lipids destined for other cellular compartments are manufactured.

Explanation:

This is because smooth endoplasmic recticulum is an organelles found in eukaryotic organisms that lack membrane bound ribosomes and are found in cells that has much lipids like ovaries, testes, oil glands in the skin e.t.c. They are important in the synthesis of lipids is the site where lipids , Phospholipids, steroid hormones.

They also play a major role in detoxification of harmful metabolic by products and metabolic processes of calcium ions within the cell

5. DQ 5 Which of the following is NOT a class of clastic rock?
A.fossil
B.conglomerate
C.sandstone
D.shale

Answers

Answer:

B.conglomerate us not a class of clastic rock

At one time, Chondrichthyes were thought to have diverged from other vertebrates before the evolution of bone. Now we have concluded that the Chondrichthyes diverged after the evolution of bone had started. What does this change demonstrate about the evolution of fishes

Answers

Answer:

The correct answer would be - Characteristics can be lost in evolution.

Explanation:

The new evidence helps in developing a new hypothesis. In this case, new evidence proved that the Chondrichthyes diverged after the evolution of bone had started instead of before the evolution started. This process called atavism where an ancestral genetic trait reappears after having lost. This leads to loss of the traits in the evolution

This can take place by knocking the mutation out to overriding the gene by the old gene or overriding the new trait by the old trait during the evolution period.

At one time, Chondrichthyes were thought to have diverged from other vertebrates before the evolution of bone. Now we have concluded that the Chondrichthyes diverged after the evolution of bone had started might be their characteristics lost in evolution according to atavism.

What is atavism?

Recurrence in an organism of a trait or character typical of an ancestral form and usually due to genetic recombination. This leads to the loss of the traits in the evolution.

Hence, Chondrichthyes diverged after the evolution of bone had started might be their characteristics lost in evolution according to atavism.

To learn more about  atavism click here:

https://brainly.com/question/9109872

please help asap and I’ll give brainiest!

Answers

Answer:

I think so A is the answer

Explanation:

changes in Geology over Time ... relative age – a rock layer's age compared to other rock layers ... Fossils give clues on how Earth may ... weather. ▫This helps us to infer that West. Virginia and Pennsylvania were both ... in the area. ... Many fish. Silurian 438 to 408 mya. First insects, vascular plants on land.

i hope my answer is correct and would help a little bit.

PLEASE I NEED HELP ASAP :(

Answers

Answer:

b

Explanation:

the rest just wont help when you are trying to identify them

answer sheet of Grade 10 science what I have Learned module 2 Quarter 3​

Answers

i’m sorry but i would like to help but this got me lost

The function of the hepatic portal circulation is to ________. The function of the hepatic portal circulation is to ________. return glucose to the general circulation when blood sugar is low carry toxins to the kidney for disposal through the urinary tract distribute hormones throughout the body collect absorbed nutrients for metabolic processing in the liver

Answers

Answer:

The correct answer is ''collect absorbed nutrients for metabolic processing in the liver.''

Explanation:

Portal circulation is called that system that is between two large capillary beds, represented by the gastrointestinal organs, pancreas and spleen on the one hand, and the liver on the other. Hence, any venous system of the organism that is located between two capillary territories is called "portal system".The hepatic portal vein collects the deoxygenated blood from the gastrointestinal system, spleen and pancreas, this blood is venous and comes deoxygenated, in addition to being loaded with the nutrients absorbed in the digestive process, so it is a blood subjected to a high overload, but that quickly, thanks to its distribution through the liver, it will be bypassed to various chemical processes to extract a large part of the nutrients from it, and purify and eliminate toxins.

The function of the hepatic portal circulation is to collect absorbed nutrients for metabolic processing in the liver. Therefore, option D is correct.

The hepatic portal system is also known as the hepatic portal circulation or portal venous system. It is a specialized network of blood vessels that carries blood from the gastrointestinal tract, spleen, and pancreas to the liver. It plays a crucial role in directing nutrient-rich blood from the digestive organs to the liver for processing, storage, and detoxification before it is distributed throughout the rest of the body.

The hepatic portal system allows the liver to regulate the composition of blood coming from the digestive organs before it enters general circulation. Thus, option D is correct.

Learn more about the hepatic portal, here:

https://brainly.com/question/12897264

#SPJ6

Viruses cause which of the following human diseases?
the flu, AIDS and Bubonic Plague
the flu, AIDS and athlete's foot
© AIDS, cold sores and athlete's foot
the flu, AIDS, and cold sores

Answers

Answer:

Explanation:

https://medlineplus.gov/viralinfections.html

choose five body systems that are involved in maintaining homeostasis in your body as you answer these assessment questions. Explain how these five body systems work together.

Answers

Answer:

Explanation:

Water Levels

For example, the cardiovascular, urinary, and lymphatic systems all help the body control water balance. The cardiovascular and lymphatic systems transport fluids throughout the body and help sense both solute and water levels and regulate pressure. If the water level gets too high, the urinary system produces more dilute urine (urine with a higher water content) to help eliminate the excess water. If the water level gets too low, more concentrated urine is produced so that water is conserved.

Internal Temperatures

Similarly, the cardiovascular, integumentary (skin and associated structures), respiratory, and muscular systems work together to help the body maintain a stable internal temperature. If body temperature rises, blood vessels in the skin dilate, allowing more blood to flow near the skin’s surface. This allows heat to dissipate through the skin and into the surrounding air. The skin may also produce sweat if the body gets too hot; when the sweat evaporates, it helps to cool the body. Rapid breathing can also help the body eliminate excess heat. Together, these responses to increased body temperature explain why you sweat, pant, and become red in the face when you exercise hard. (Heavy breathing during exercise is also one way the body gets more oxygen to your muscles, and gets rid of the extra carbon dioxide produced by the muscles.)

Conversely, if your body is too cold, blood vessels in the skin contract, and blood flow to the extremities (arms and legs) slows. Muscles contract and relax rapidly, which generates heat to keep you warm. The hair on your skin rises, trapping more air, which is a good insulator, near your skin. These responses to decreased body temperature explain why you shiver, get “goose bumps,” and have cold, pale extremities when you are cold.

Homeostasis of Ions

Body functions such as regulation of the heartbeat, contraction of muscles, activation of enzymes, and cellular communication require tightly regulated calcium levels. Normally, we get a lot of calcium from our diet. The small intestine absorbs calcium from digested food.

The endocrine system is the control center for regulating blood calcium homeostasis. The parathyroid and thyroid glands contain receptors that respond to levels of calcium in the blood. In this feedback system, blood calcium level is the variable, because it changes in response to the environment. Changes in blood calcium level have the following effects:

When blood calcium is low, the parathyroid gland secretes parathyroid hormone. This hormone causes effector organs (the kidneys and bones) to respond to increase calcium levels. The kidneys prevent calcium from being excreted in the urine. Osteoclasts in bones reabsorb bone tissue and release calcium.

When blood calcium levels are high, the thyroid gland releases calcitonin. Calcitonin causes the kidneys to reabsorb less calcium from the filtrate, allowing excess calcium to be removed from the body in urine. Calcitonin also suppresses the formation of active vitamin D in the kidneys; without vitamin D the small intestines don’t absorb as much dietary calcium. Osteoblasts, stimulated by calcitonin, use calcium in the blood to add to bone tissue.

The radial tuberosity is the site of the attachment for the deltold muscle. True or false?

Answers

Answer:(Radius is bone on right. Radial tuberosity is visible at upper left of radius.) Details. Identifiers. Latin, Tuberositas radii. TA98 · A02.4.05.007 · TA2 · 1216 · FMA · 23489 · Anatomical terms of bone. [edit on Wikidata]. Beneath the neck of the radius, on the medial side, is an eminence, the radial tuberosity; ... Ligaments that support the elbow joint also attach to the radial ...

True

Explanation:


A mountain showed the following change in profile over millions of years.
Time
What happened to most of the material removed from the mountain?
Select one:
o
-A:The material disintegrated from exposure to sunlight.
-B:The material weathered to form new sediments.
-C:The material was destroyed by chemical reactions.
-D:The material was absorbed by plant roots.

Answers

Answer:

b

Explanation:

Hurry Timed!!! Help pls!!! 20 points!!!

Answers

Answer:

This fern has roughly 630 pairs of chromosomes or 1260 chromosomes per cell. The fact that these cells can accurately segregate these enormous numbers of chromosomes during mitosis is truly remarkable.

Explanation:

Leaf cell has 21 chromosomes.

an organisms habitat must provide all of the following except

Answers

Answer: Predators (trust me)

Answer:

except what? there are no possible answer

Explanation: Please give possible answers

Similarities between tridax plant and elephant grass

Answers

Answer:

ok so basically they just

Paleoclimatic analysis has generated a claim that there is a possible correlation between an extinction event around 29 million years ago that allowed grasslands to become abundant and the adaptive radiation of several groups of butterflies.

Which of the following proposes the best alternative hypothesis for the claim?

A- Climate analysis conducted by sampling pollen preserved in amber shows an increase in grass pollen 29 million years ago, but there is no significant difference between speciation rate, as well as species richness with regard to butterflies, before and after 29 million years ago.

B- Climate analysis conducted by sampling pollen preserved in amber shows an increase in grass pollen 29 million years ago, which indicates there was an increase in grasslands that correlates to an increase in butterfly speciation during the same time period.

C- There is a correlation between the rapid and wide-ranging decrease in species richness of insects in general 29 million years ago and the increase in species richness and diversity among the butterfly population during the same time period.

D- Evidence of rapid speciation among butterfly species 29 million years ago is evenly distributed among all environments of that period.

Answers

I think the answer could be C

Which of the following does NOT affects the type of severe weather a location gets? *
latitude
normal weather patterns
high pressure
geography

Answers

Answer:

high pressure

I think it is option C

hope it helps

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