➜ The contraction and expansion movements of the walls of food pipe are called peristaltic movements.
This movement pushes the food in forward direction in the alimentary canal.PLEASE HELP QUICKLY
Jamie has an itchy, red bump where she was bitten by
a mosquito. What happened to cause this skin
reaction?
Venom from the mosquito entered her skin through
the mosquito's sharp, straw-like mouthpart.
Saliva from the mosquito entered her skin through
the mosquito's sharp, straw-like mouthpart.
Blood was drawn from her skin through the
mosquito's sharp, curved pincers.
Blood was drawn from her skin through a long,
straw-like structure on the mosquito's abdomen.
Answer:
I think it is D; the last one!
Explanation:
Answer:
#2 the saliva from the mosquito entered her skin through the mosquito's sharp, straw-like mouthpart
Explanation:
mosquito saliva has protein that are foreign substances to our bodies causing an itching or burning reaction
What application of biotechnology seeks to make a positive impact on human health by searching the marine environment for novel compounds, such as new drugs?
Biochemical engineering
Biomimicry
Bioprospecting
Environmental biotechnology
Question 2 Multiple Choice Worth 3 points)
Answer:
The correct answer is bioprospecting.
Explanation:
I got the question correct.
Starting on bare rock what is the usual ecological succession of organisms
Complete question:
Starting on bare rock, what is the usual ecological succession of organisms?
a)shrubs--grasses--lichens--trees
b)lichens--shrubs--grasses--trees
c)grasses--shrubs--lichens--trees
d)liches--grasses--shrubs--trees
Answer:
d)liches--grasses--shrubs--trees
Explanation:
The succession is the colonization of an open area and includes all the changes the area suffers since then. It is a sequence of events that involves the establishment of different species through time.
There are two types of succession, primary and secondary, depending on the magnitude of the alteration.
Primary succession refers to an open space with no living organisms, such as a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. If previous species were inhabiting this area, after the event, nothing is left.
In those cases where there is an alteration or disturbance at a site that opens the area, it allows new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.
First, pioneer species arrive. These are the first inhabitants, mostly lichens or moses with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat. They make it more suitable for the establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the soil, making it better with time. New species arrive, like small species, bushes and shrubs. Habitat modification keeps on going while new species establish (trees, pines, among other big species). They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. The first species are eventually eliminated by competition, but new species keep appearing and competing for resources. This sequence continues until the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.
Answer:
D. liches--grasses--shrubs--trees
Explanation:
primary ecological succession will be as: lichens inhabit bare rocks and breakdown the minerals rich material in the rock and die to produce organic material so that new species could be formed as grasses will grow which will become shrub and eventually the tree. Animals eat those grass, shrub or tree products.
biology need help asap
Answer:
It's deoxyribose or ribose (depending on whether it is DNA or RNA). They are carbohydrates
The structure is called nucleotide
One reason to prevent pollutant run-off into the Chesapeake Bay is to keep the oxygen levels in the bay from getting
so low that a(n)_1 occurs, threatening organisms like crabs and fish.
A)
neap tide
B)
overpopulation
c)
marine dead zone
D)
undertow current
The pollution in the Chesapeake Bay causes dead zone means low oxygen that can leads to suffocation in marine organisms like crabs and fishes. The correct option is C.
What is the Chesapeake Bay?The Chesapeake Bay is in United State. It is the largest estuary of US.
As due to increased pollutants in this, the marine organisms are facing dead zone due to low oxygen levels.
This marine dead zone causes the crabs and fishes to die due to suffocation and improper oxygen supply.
Thus, the correct option is C.
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What is the structure of the brain that helps coordinate the movement of muscles in
the body?
Answer:
The cerebellum (back of brain).
Explanation:
Evolution is a process of
Answer:
Evolution is a process by which the characteristics of living organisms change over many generations as traits are passed from one generation to the next.
Explanation:
Hope you have a good day! :)
help please will give brainliest to anyone who is good at
Answer:
The way to figure this this type of question out is card by card. So the first card in the second hand is 2 in 52 (It can match either of the cards in the previous hand). × 1 in 51 ( it has to match the card that was not matched by the first card and there are 51 choises left). So 2 in 52 = 1 in 26 x 1 in 51 = 1 in 26 x 51 = 1 in 1326
Explanation:
Hope this helps! Remember to reword it incase your teacher checks for plagiarism! I recommend Quillbot to help!
- Eijiro <3
What would happen if an additional base were inserted between the first and second condons?
Answer:
dynamic and adaptable molecule
Explanation:
as such ,the nucleotide sequence found within it are subject change as the result of a phenomenon called mutation
Which unmanned craft is used to collect data about bodies in space?
rover
satellite
space probe
space station
Answer:
Space probe
Explanation:
Probes send data back to earth for scientists to study. Sputnik 1 was tbe first probe to go into soace
Which organism would most likely be labeled a tertiary consumer?
Answer:
OHHHHH oKkkkkkk i didnt think that said organism u cant say what i thought it said on brainley but remove the n and i
Explanation:
name the system of which each of the following organ belong Blood, Eye, uterus
Answer:
Blood - Circulatory System
Eye - Sensory System
Uterus - Reproductive System
17 In snapdragons, R represents red flowers, and r represent white flowers. In the
cross RR x rr, all the offspring have pink flowers. Which pattern of inheritance is
illustrated by this cross?
A Incomplete dominance
B Multiple alleles
C Recessiveness
D Polygenic inheritance
sometimes people experience a burning sensation in their muscles during exercise. briefly explain why this happens
Answer: bebesitaaaaaaa
Explanation:
Answer:
Lactic Acid
Explanation:
When e exercising we sometimes feel a burning sensation either in our lungs or our muscles that goes away shortly after the activity. Caused by the build up of Lactic Acid
Methane and oxygen react to form carbon dioxide and water. the reaction speed can be increased by: A.
decreasing the concentration of water.
B.
decreasing the concentration of methane.
C.
increasing the concentration of carbon dioxide.
D.
increasing the concentration of oxygen.
Answer:
c, got it right on study island
Explanation:
The speed of reaction can be increased by increasing the concentration of reactants such as oxygen or methane.
What do you mean by a Chemical reaction?A chemical reaction may be defined as a process that leads to the transformation of one chemical substance into another.
It is thought that the rate of reaction depends on the initial concentration of the reactants. Hence, increasing the reactant's initial concentration will definitely increase the speed of reaction.
Therefore, the correct option for this question is D.
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what types of organisms have endoskeleton
Answer:
Endoskeletons: The skeletons of humans and horses are examples of endoskeletons. They provide bodies with support, protection of organs, and aid in movement.
Explanation:
Answer:
Mammals, reptiles, birds, fish and amphibians are vertebrates with endoskeletons.
What is herd immunity, and why are vaccines important for achieving herd immunity?
Answer:
Herd immunity is a form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to an infection, whether through vaccination or previous infections, thereby reducing the likelihood of infection for individuals who lack immunity.
Explanation:
Vaccines create immunity without causing illness or resulting complications. Herd immunity makes it possible to protect the population from a disease, including those who can't be vaccinated, such as newborns or those who have compromised immune systems.
Which of the following correctly describes neurotransmission?
A. An action potential travels down the axon and triggers the release of
neurotransmitters. The neurotransmitters cross the synapse, and another action
potential begins.
B. A neurotransmitter travels down the axon and triggers the release of an action
potential. The action potential crosses the synapse, and another
neurotransmitter begins.
C. The synapse travels down the axon and triggers the release of an electrical
impulse. The electrical impulse crosses the neurotransmitter, and another
synapse begins.
D. A neuron sends a chemical signal down its axon. The axons touch the dendrites of
another neuron, and the signal continues.
Answer:
i believe the answer to this is A.
Explanation:
6. Which statement below would be the least likely to cause a sinkhole? A. Humans over pump ground water creating a cavity causing a sinkhole B. Water tables drop creating a cavity in the limestone causing a sinkhole C. Humans remove the top soil exposing the limestone causing a sinkhole D. Acidic groundwater dissolves limestones creating a cavity causing a sinkhole
GIVING BRAINLIEST!!!!
What is a similarity between wind and water?
A) They are both types of non-renewable resources.
B) They are both sources of power for objects that people use.
C) They can both be polluted by pesticides and fertilizers.
D) They are both sources of oxygen for plants and animals.
Answer:
Hey i think its A :) have a wonderful day !
Explanation:
because they both transfer soil to new places.
Wind is a type of dry deposition method. If original soil is erodable and wind exists, soil particles move via wind (sometimes it is called dust transport) and finally are deposited at final destination regions/areas.
However, water erosion occurs when rainfall or hail occurs. Along with water some soil particles (mostly finer ones) are carried away. Finally close to river mouths (delta regions) or wherever deposition is occurring (within a river canal) these soil particles are deposited.
A) They are both types of non-renewable resources: This statement is incorrect. While there are some forms of energy that are derived from non-renewable sources such as fossil fuels, wind and water are both examples of renewable resources.
How is wind generated ?Wind is generated by the movement of air caused by differences in temperature and pressure, and water is driven by the water cycle, which is powered by the sun. Both wind and water are replenished naturally, making them sustainable sources of energy.
B) They are both sources of power for objects that people use: This statement is correct. Wind and water have both been used for centuries as sources of power to perform work. Wind has been used to power windmills for grinding grain and pumping water, while water has been used to power water wheels for milling grain, sawing wood, and generating electricity.
Today, wind turbines and hydropower plants are common examples of objects that harness the power of wind and water to generate electricity.
C) They can both be polluted by pesticides and fertilizers: This statement is partially correct. While water can certainly be polluted by pesticides and fertilizers, wind is not typically subject to the same kind of pollution. However, it is important to note that wind can carry pollutants and particulate matter, which can impact air quality and human health.
They are both sources of oxygen for plants and animals: This statement is incorrect. While water is an essential component of photosynthesis, the process by which plants produce oxygen, wind is not a direct source of oxygen.
However, wind can play an important role in the dispersal of plant seeds, which helps to facilitate plant growth and regeneration.
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The wing of a bee and the wing of a bird are considered to be - A B s C D
A.) Vestigial structures
B.) Homologous structure
C.) Analogous structures
D.) Evolutionary structures
A temperate desert is an example of a(n)
biome
community
organism
population
Previous
Answer:
biome
Explanation:
hope this helps!!
Which of the following is not accurate about genetic mutations?
A. Mutations can be harmful & may result in humans developing various genetic
conditions,
B. Mutations can result in proteins becoming non-functional, malfunctioning, or not
changing how they function.
C. Mutations are caused by mutagens, which are substances that cause changes in gene
sequences
D. Mutations always cause changes in the amino acid sequence & therefore negatively
affect the protein.
Answer:
D
Explanation:
some mutations can be helpful
if my answer helps please mark as brainliest.
U-C-A-U-C-G-U-C-G-A-A-C-U-C. is it an RNA or DNA strand?
Answer:
RNA
Explanation:
Please help asap please!
How many grams of salt are in 5 L of a solution with a concentration of 3 g/L?
Answer:
Three grams per liter times five liters tells us that there are fifteen grams of salt in this five liter solution.
Explanation:
i hope this helps
mark brainlyest
what forms the genetic code?
Answer:
Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the cellular machinery, the ribosome, can read them and turn them into a protein. In the genetic code, each three nucleotides in a row count as a triplet and code for a single amino acid.
Explanation: your welcome
Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the cellular machinery, the ribosome, can read them and turn them into a protein. In the genetic code, each three nucleotides in a row count as a triplet and code for a single amino acid.
What is genetic code?The genetic code refers to the set of rules guiding the translation of nucleotide bases in DNA or RNA into an amino acid sequence (proteins). The genetic code contains all the codons in the genome, which is a group of three nucleotide base (triplet-based).
Thus, Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and T.
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At the start of an experiment, there are 30 bacteria in a dish. The bacteria population is expected to grow at a rate of 180% each day.
Which is the best prediction for the bacteria population after 7 days?
51,750 40,479 2682 1837
Answer:
The answer is 40,479.
After,
Day 1- 84
Day 2- 235.2
Day 3- 658.56
Day 4- 1,843.968
Day 5- 5,163.1104
Day 6- 14,456.7091
Day 7- 40,478.7855
Answer:
40,479
Explanation:
took the test
What happens when blood sugar levels become too high?
Answer:
you end up with diabetes so.. yeah
Explanation:
Write the letter all of the following statements that are NOT true. a. Coding sequences for gene products can be isolated from cDNA libraries. b. Antibodies are used for Northern blot analysis. c. VNTRs are highly conserved in human populations. d. PCR amplification generates large numbers of linear DNA fragments. e. RNA molecules can be used as hybridization probes in Southern blot analysis. Separate your answer(s) with a comma, and enter only the letter(s) of your choice(s
Answer:
b. Antibodies are used for Northern blot analysis.
c. VNTRs are highly conserved in human populations.
Explanation:
The northern blot technique is used in molecular biology laboratories for detecting specific RNA molecules in a sample of RNA derived from a particular cell/tissue. Antibodies can be detected by the enzyme-linked immunosorbent assay (ELISA). In ELISA, antigens are used to detect specific antibodies: the addition of the antigen produces a positive reaction i.e., formation of the antigen-antibody binding complex. Subsequently, a second antibody with a particular marker is added to bind with the complex, thereby producing a change in the color and thus evidencing the presence of the target antibody in the sample. On the other hand, the variable number of tandem repeats (VNTR) are short sequences (around 20 to 100 bp) whose number of repetitions varies at specific loci in the genome of many organisms, including humans. Since VNTR sequences exhibit variation in length between individuals of the same species/population, they are widely used as molecular markers to identify individuals, QTL (quantitative trait loci) mapping, establish phylogenetic relationships among individuals/cultivars/lines, etc.
How do these tape worms defend themselves from the immune system of their host
ck-12:Unwanted Company
Answer:
Scientists discovered mechanisms that protect tapeworms from being digested by their host. ... They also needed a mechanism to protect themselves from intestinal substances, specifically from digestive enzymes. One of such enzymes called trypsin breaks down proteins.
Explanation:
For example:Parasites can hide away from the immune system by invading immune-privileged tissue such as the central nervous system or the eye (Bhopale 2003). Also some parasitoids place their eggs inside tissue such as the fat body that is not well patrolled by the host's immune system