Answer: a) exoskeleton
Explanation:
Well, many invertebrates – and all arthropods – have a protective external casing called an exoskeleton. This literally means ‘outside skeleton’ and its role is to cover the animal’s soft tissues and also provide a rigid structure to which the creature’s muscles can attach.
Which of the following correctly describes a graded potential?
Answer:
Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none.
Explanation:
btw, where are the options?
The statement which correctly describes a graded potential is: amplitude of various sizes.
Graded potential refers to a temporary change in electric or membrane potential of a stimulus with respect to both its size and distance.
Amplitude can be defined as the maximum displacement of a wave when measured from its equilibrium position.
Thus, amplitude is measured vertically from an equilibrium position.Generally, a graded potential is directly proportional in amplitude to the size of the stimulus that is send as an input due to the following:
DepolarizationHyperpolarizationIn conclusion, the statement which correctly describes a graded potential is amplitude of various sizes.
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Help help bell help help
why do fungi release enzymes from there tips?
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
Which two statements best describe jet streams in the northern hemisphere?
A. The subtropical jet stream separates warmer air near the equator
and cooler air to the north.
B. The polar jet stream separates colder air near the pole and
warmer air to the south.
C. The subtropical jet stream causes ocean currents to form near
the equator.
A
D. The polar jet stream circulates air between the North Pole and the
South Pole.
SUBMIT
The correct answer is B. In the Northern Hemisphere, the polar jet stream separates colder air near the pole and warmer air to the south.
The jet stream is a geophysical effect caused by the large temperature difference between the north pole and the equator. Something similar also happens on a small scale. In summer, when night falls and the ground cools where the sun is gone, air blows from north to south across the boundary between warm and cold air. This is the refreshing evening breeze.
From the north, a jet stream generally supplies colder air than from the west or south. The jet stream also creates depressions with a warm front and a cold front.
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Answer:
A. The subtropical jet stream separates warmer air near the equator
and cooler air to the north.
B. The polar jet stream separates colder air near the pole and
warmer air to the south.
Explanation:
5. Jackson shares what he calls "his little depressing story" about coral reefs in Jamaica following a hurricane. He claims destruction such as that in Jamaica is only getting worse. Please elaborate on why it is getting worse, being sure to tie in natural weather catastrophes to your answer.
Answer:
In Jacksons talk about his depressing story he talks about how after a natural disaster such as a hurricane there is some kind of successional sequence of recovery but now what's happening is that overfishing, pollution, and climate change are all interacting In a way that prevents the recovery.
Explanation:
I had the same question in my marine science class and got it right.
Which of the following is true about a trait? *
A trait is an organism's physical appearance
A trait is how an organism behaves
The gene in an organism's DNA determines its trait
Two of the above are true
All of the above are true
Answer:
D
Explanation:D Sorry if I'm wrong!
What is something you can never seem to finish?
Answer:
This!! HAHAHA!
Explanation:
what happens when an acid is added to a solution?
Answer:
pH is a measure of the concentration of H3O+ ions in a solution. Adding an acid increases the concentration of H3O+ ions in the solution. ... If an acid is added to a basic solution, the solution becomes less basic and moves toward the middle of the pH scale. This is called neutralizing the base.
Animals do not have inner feelings that tell them when to eat.
True or False
Answer:
true
Explanation: because if they did then that would be crazy, its like how would they have feelings that tell them what to eat and what not to eat, yk what i mean? im sorry if this is wrong.
Which of the following best describes how the amount of DNA in the cell changes during M phase?
The amount of D N A doubles as the D N A is replicated.
The amount of D N A slightly increases as a result of new organelle synthesis.
The amount of D N A does not change while the cell grows.
The amount of DNA is halved as the cell divides into two daughter cells.
Answer:
The amount of DNA doubles as the DNA is replicated
Explanation:
on the graph it shows that the DNA is x2 by the time it reaches G2
The amount of DNA is halved as the cell divides into two daughter cells. Therefore, option (D) is correct.
What is M phase?M phase, also known as mitosis, is the phase of the cell cycle in which a cell divides into two daughter cells. M phase is divided into several stages, including prophase, prometaphase, metaphase, anaphase, and telophase. During prophase, the cell's nucleolus disappears and the chromatids (replicated chromosomes) become visible. In prometaphase, the nuclear envelope breaks down and the mitotic spindle begins to form.
During metaphase, the chromosomes line up at the equatorial plane of the cell. In anaphase, the sister chromatids are separated and move to opposite poles of the cell. Finally, in telophase, two new nuclei form and a new cell wall begins to grow between the two daughter cells. Overall, M phase is a crucial step in the cell cycle that ensures the accurate segregation of genetic material to the daughter cells.
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What is the inkiphalin command?
Answer:
It's Enkephalins.
Enkephalins are small peptides that can serve as neurotransmitters in the brain. Enkephalins act to attenuate substance P release in the dorsal horn of the spinal cord and inhibit afferent pain fibers.
How and why does the surface of the earth change
of the earth has changed?
Answer:
How and why does the surface of the earth change
of the earth has changed?
It can be hard to describe change on the surface without bringing up the interior. Earth is a system of constantly changing interactions between interior, surface conditions, and external events.
Volcanoes bring up new material and even create land. The Hawaiian islands, for instance are a chain of volcanoes on the surface, but the underlying structure is a single magma plume. In a way, the entire chain of islands is a single volcano that breaks through different places as the crust moves over it.
On that note: plates. Earth is made of tectonic plates that constantly move. Some grind against one another, others collide, and some pull apart. Depending on direction and interaction, you get anything from mountains, to spreading valleys, oceans, and anything else you care to name. Mountains can almost be viewed as something akin to the ridges of build up ice on a window scraper.
Erosion by water, wind, sand, chemicals, and living things changes the surface too. Materials on the surface face an incredible number of forces breaking them down and dragging them away, even as those same forces in different places and situations deposit those materials in other places, building things back up.
“Stardust” is also a thing. Rocks, dust, debris, and all sorts of random, natural cra.,p is constantly hitting our atmosphere. Regardless of whether or not it stays mostly intact, some material breaks off, and most of it does tend to make it to the surface, adding tiny amounts of matter all the time. …of course something BIG enough hitting the surface can throw rocks and chunks of surface clear into space, so that’s a thing too.
Remember when I mentioned living things? Living things D.,IE! Gac.k! And when they do, they break down into organic gunk. Soil - the stuff we grow crops in - is basically minerals and dead things that are decaying into nutritious, yummy, dir.,t.
Weather changes things too. Rain erodes, but rain that soaks a rock, and then is frozen by low temperatures, breaks the rock. Too much rain can create flooding, which results in a lot of sediment moving downstream. Heat can dry things out, crack the ground, and even slowly cook one kind of soil into another. Lightning can make glass out of sand, snow can collapse weak ground, not enough rain can dry out ground that could si.nk down without the extra pressure, and too much rain can literally move mountainsides if enough water adds its weight to the rocks and dir.t.
It’s always changing, and there is always more complexity to go into when studying it. There’s seldom a single cause, or reason, or effect for anything.
Explanation:
Have a great day!
The surface of the earth is constantly changing.
Explanation:
Wind, water,and ice break down large rocks and move sediments on the surface. Some events, though, change earth's surface much more quickly. These include volcanic eruptions, earthquakes, and landslides.
What percent of global freshwater is estimated to be used for crop irrigation?
90%
2.5%
60%
30%
Answer:
2.5%
Explanation:
because the global freshwater is estimated and observe percentage of water to used for crop irrigation and they compelled that 2.5% is exactly to used.
Arrange the following budget components. Which of these needs the highest amount of budget in your family? You may seek help from your parents.
Savings
food
education
medical & dental
Recreation
household operations
utilities
1.
2.
3.
4.
5.
6.
7.
The needs with the amount of budget from highest to lowest include
FoodEducationHousehold operationSavingsMedical & dentalUtilitiesRecreation.The most important aspect of life in organisms is food as we need it to stay
alive and healthy which is why it has the highest budget.
Education comes second due to it ensuring people are learned ,developed
and has a relatively high cost.
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What structures are found in all cells? select two options
Where does meiosis occur in male and female?
Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles. Explain the energy transformation in this process.
Answer:"Process of breaking down glucose to obtain energy in the form of ATP" also known as Cellular Respiration.
I hope this helps
Explanation:
most nectar in flowers is contained in the middle of the blossom at the base of the patels. why you think the location of the nectar in important for the plants reproduction
How can i earn money from this app?
Answer:
u dont earn money from brainly. the point is altruistic help
Explanation:
if u mean something else, provide context and ill leave a comment with the correct answer
- Lysogenic life cycle of viruses causes the burst of the host cell (T/F)
- Spot method of detection of bacteriophages is a qualitative method
(T/F)
65 points, anwser asap, graph below
What is happening to the deer population between the years 2005 to 2010? Support with reasoning from our model of population growth.
Answer:wolves
Explanation:
wolves decreased the population because they kept increasing so people killed the and a couple of years later they went up the so they brought wolves back!
The proccess of photosynthesis can be represented by the chemical formula _________
Answer:
6H2O + 6CO2 ----- C6H1206 + 6O2
8. If brown (B) noses are completely dominant to blue (b) noses, write
genotypes combinations and phenotypes you could have in any given individual.
Select all of the following that correctly describe the Streptococcus genus
- Gram Negative
- Gram Positive
- Cocci
- Bacilli
- Tetrads
- Sarcinae
- Strepto
- Staphylo
- Fastidious
- Can grow in salt
- Can grow in acid
- Normal flora of the skin
Please explain if possible!
Streptococcus is a genus of spheroidal bacteria that belongs to the Streptococcaceae family.
The bacteria's distinctive clustering in chains that resemble a string of beads is referred to as streptococcus ("twisted berry"). Microbiologically, streptococci are classified as gram-positive and nonmotile. Cocci :Streptococcus is a genus of gram-positive coccus (plural cocci) or spherical bacteria belonging to the Streptococcaceae family, which is part of the Lactobacillales (lactic acid bacteria) order in the Firmicutes phylum.
Gram-positive cocci are a diverse collection of bacteria that have a similar shape. Sarcina cells, for example, are grouped in cubical pockets. Streptococcus spp. resemble a string of pearls. Staphylococcus species do not divide on a regular plane.Bacilli :Streptococcus bacteria subdivide into Strep. pyogenes (Group A), Strep. agalactiae (Group B), enterococci (Group D), Strep viridans, and Strep pneumonia. Gram-positive bacilli (rods) subdivide according to their ability to produce spores.
If complete hemolysis of the blood cells is observed, the streptococci are classified as beta'hemolytic. M protein is considered the most important virulence component of S. pyogenes. Antibodies that react with M protein are produced in response to infection. A prospective antistreptococcus vaccination based on the M protein or a derivative of it is being studied.Tetrads :The tetrad occurs in a subgroup of the cocci where the bacterium divides in two planes to form a square of four bacteria called a tetrad. Some examples of tetrad-forming bacteria are the lactic acid bacilli, Aerococcus, a urinary tract pathogen and Pediococcus and Tetragenococcus, both of which ferment foods.
Tetrads are groups of four cocci that are positioned in the same plane (e.g. Micrococcus sp.). Sarcina is a bacterial genus that consists of eight cocci arranged in a cuboidal pattern (e.g. Sarcina ventriculi).Sarcinae :Sarcina is a Gram-positive cocci bacterium genus belonging to the Clostridiaceae family. After the cuboidal (2x2x2) cellular affiliations they create during division along three planes, the genus gets its name from the Latin word "sarcina," which means "pack or bundle."
Diplococci are pairs of cocci; streptococci are rows or chains of such cells; staphylococci are grapelike clusters of cells; sarcinae are packets of eight or more cells; and tetrads are groups of four cells in a square layout. Variations in the reproductive mechanism of bacteria result in these distinctive groups.Strepto :a combining term that means "twisted" and is used to make composite words: streptococcus
Streptococcus- a spherical or oval bacteria of the genus Streptococcus that occurs in pairs or chains and is harmful for humans, causing scarlet fever, tonsillitis, and other diseases.Fastidious :Streptococcus is a genus of gram-positive cocci that are organized in chains. These are fastidious bacteria that need blood or serum added to their culture medium. They are non-motile and do not produce spores. Most are facultative anaerobes, which means they can grow on enriched media.
Streptococcus pyogenes - it's a nutrient-concious bacteria that ferments glucose to make lactic acid and has stringent growth needs. This section explains the growth and maintenance of S. pyogenes to help in the research of this organism.Can Grow In Salt :On the basis of their salt tolerance, the salt tolerance test is used to identify enterococcal group D Streptococcus. Several bacteria, notably viridians streptococci, have been classified based on their capacity to thrive in the presence of a varying quantity of sodium chloride (NaCl).
The non-beta hemolytic streptococci (viridans, and non-enterococcal group D) do not grow in 6.5% NaCl broth; but some of the beta-hemolytic strains may grow in the broth.Can Grow In Acid :Some streptococci can create acids, grow in acidic surroundings (acidophilia), make acids at low pH levels (aciduric capability), and synthesis intracellular and external polysaccharides.
Dental caries is associated mainly with acid production at pH values below 5 by nongrowing bacteria in dental plaque. Oral streptococci cannot grow at pH above about 5, although they can lower the pH of suspensions or biofilms to values of 4 or lower.Normal Flora of The Skin:Bacteria make up the vast bulk of typical flora. Skin and nasal membranes are typically infected with Staphylococcus epidermidis.
Staphylococcus epidermidis is a Gram-positive bacterium that belongs to the Staphylococcus genus, which has around 40 species. It is found in marine sponges and is part of the normal human flora, most usually the skin flora and less commonly the mucosal flora.Sources: ( https://www.cdc.gov/ )
Need ASAP! TIA
Explain how probability theory can be used in agriculture.
Answer:
occurrence
Explanation:
Probability is a mathematical construction that determines the likelihood of occurrence or nonoccurrence of events that are subjected to chance factor. Thus the farmers are interested to know the probability of occurrence of rain before and after spraying. ... In this regard probability plays a great role
The probability theory can be used in agriculture in order to estimate grain yields and thus select which crop is suitable in a calendar year.
What is the probability theory?The probability theory is a model aimed at understanding statistic probabilities in a given problem/issue.
The probability theory involves theoretical, experimental and axiomatic probabilities.This theory (probability theory) is used to analyze random processes such as rain (precipitation) levels.In conclusion, the probability theory can be used in agriculture in order to estimate grain yields and thus select which crop is suitable in a calendar year.
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What is natural selection? Is it similar to survival of the fittest? How are the 2 alike? How are they different?
Answer:
Difference: Survival for the fittest is the survival of species/organisms with genes better suited to the environment and are selected for survival and passed to the next generation while natural selection works by giving species who are better adapted to a given set of environmental conditions an advantage over those that are not as well adapted.
Explanation:
Evolution is the slow/gradual development of human beings from simple life forms into higher forms of life over millions of years ago as stated by Charles Darwin in his book 'The Origin of Species' in 1959. He argues that human beings evolved from simple life forms into higher forms of life through:
1.Mutation - abrupt change in the form of a living organism as dictated by the climate or genetic components of the living thing involved.
2.Natural selection - a process in which the stronger species out compete the weaker ones for resources (Survival for the fittest).
3.Environmental adaptation - follows after the first two, where the surviving species isolate themselves from others as they adapt to the new environment.
The monomer of a lipid if amino acids.
True
False
why are the offspring of coral identical to the parent
they reproduce sexually so offspring have increased genetic variation
they reproduce asexually so offspring have increased genetic variation
they reproduce sexually so offspring have decreased genetic variation
they reproduce asexually so offspring have decreased genetic variation
Answer:
they reproduce asexually so offspring have decreased genetic variation
Explanation:
when an organism reproduces asexually, its offspring will look identical to the parent due to the offspring only receiving genes from one parent. I hope this helps!
Which of the following are unique to animals? Flagellated gametes, nervous system signal conduction in muscular movement, heterotrophic, the structural carbohydrate chitin
Answer:
Nervous system signal conduction in muscular movement
Explanation:
Hope i helped :)
What is carbon?
A. an element
B. a compound
C. an
organism