Why do muscles work in pairs

Answers

Answer 1

Answer:they only pull in one direction

Explanation:

Answer 2

Answer

Skeletal muscles only pull in one direction. For this reason they always come in pairs. When one muscle in a pair contracts, to bend a joint for example, its counterpart then contracts and pulls in the opposite direction to straighten the joint out again.


Related Questions

rna processing converts the rna transcript into _____.

Answers

rna processing converts the rna transcript into mRNA

If Bob has type AB blood and Anna has type O, what is the likelihood that they will have a child with type O blood

Answers

Answer:

None of their children will have it.

Explanation:

This is becasue the type O blood is recesssive. Hope this helps :)

consider a stable frog population living at carrying capacity in a pond. an average female produces 6,000 eggs during her lifetime and an average of 300 tadpoles hatch from these eggs. for the population size to remain stable, how many of these tadpoles should, on average, survive to reproduce?

Answers

Answer:

Uhmmmm, Since out of 6,000 eggs, 300 would hatch on average. The amount of tadpols to most likely survive would be 10-30. (I think)

The same species in an ecosystem living in a group is called population. The attribute of the population is the sex ratio, population, birth ratio, and death ratio.

The answer is 5% of the tadpole.

The fusion of the male and female gamete is called reproduction which leads to the formation of new offspring which carry the genes to the next generation.

To remain stable in the population is 5% of the tadpole because the tadpole formed survive after the egg is 5% of the total.

Hence, the 50 tadpoles must survive to have a stable population.

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the use of living organisms to detoxify polluted ecosystems is called _____.

Answers

the use of living organisms to detoxify polluted ecosystems is called bioremediation

what hormone secreted by the duodenum inhibits secretion of gastric juices and stimulates the release of insulin?

Answers

Answer:

Gastric Inhibitory Peptide

Explanation:

Please help me im trying to get my grade up.

Answers

Answer:

Adenine binds with the nitrogen base thymine in DNA while it binds with uracil in RNA.

Explanation:

DNA and RNA base pairing is slightly different since DNA uses the bases adenine, thymine, cytosine, and guanine; RNA uses adenine, uracil, cytosine, and guanine

When looking at the sequence of a variety of genes, which species' genes would you predict to have the most similar sequence compared to the corresponding genes in humans

Answers

Answer:

Explanation:

One of the most important aspects of bioinformatics is identifying genes within a long DNA sequence. Until the development of bioinformatics, the only way to locate genes along the chromosome was to study their behavior in the organism (in vivo) or isolate the DNA and study it in a test tube (in vitro).

Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Select all the statements
that are supported by this tree.
A)
Gray whales are the common ancestor of the Blue and Humpback whales.
B)
Blue and humpback whales diverged more recently than either did from
the gray whale
The Bryde's whale shares a more recent common ancestor with the Sei
whale than with the Fin whale.
D
The blue and the Bryde's whale have more traits in common with each
other than with any other two species,
E
Southern minke whales and Northern minke whales have more traits in
common with each other than with any other species

Answers

By analyzing a phylogenetic tree, we can establish relationships between different taxonomic groups. Nodes, branches, and lineages provide information for these interpretations. The statements are C and E.

--------------------------------------

The phylogenetic tree is composed of,

Lineages → The taxonomic groups of interest. These are placed in the extremes of the branches.  

Nodes → These are the ramification points, which are also known as divergence points. They represent the location of the most recent common ancestor.  

Root → This is the older common ancestor that all lineages share. The first one in the tree.  

⇒ Highly related groups that share a recent common ancestor. This means that they all diverge from the same node.

⇒ Lineages less related to each other are those whose common ancestor is far away in history.  

A)  Gray whales are the common ancestor of the Blue and Humpback whales. ⇒⇒⇒ NO

B) Blue and humpback whales diverged more recently than either did from

the gray whale  ⇒⇒⇒ NO

C) The Bryde's whale shares a more recent common ancestor with the Sei

whale than with the Fin whale ⇒⇒⇒ YES

D)  The blue and the Bryde's whale have more traits in common with each

other than with any other two species  ⇒⇒⇒ NO

E)  Southern minke whales and Northern minke whales have more traits in

common with each other than with any other species  ⇒⇒⇒ YES

-------------------------------------------------

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Answer:

C, E

Explanation:

I did it on USATestPrep

Fossils may most likely be discovered-
1- in trees
2- along stream banks
3- in paved parking lots

Answers

2. They can be discovered in the other two as well, but seeing fossils on the stream bank is the most common

Answer:

2

Explanation:

How does the bacterial chromosome differ from the chromosomes found in eukaryotes

Answers

How does a bacterial chromosome differ from a eukaryotic chromosome? A bacterial chromosome is a circular, double-stranded DNA molecule with associated proteins. A eukaryotic chromosome is a linear, double-stranded DNA molecule with many associated proteins, including histones.

The flowchart below shows the major steps in a system that builds mp3 players.


Which of the steps in the system are examples of processes?
A.
I, II, III, and IV only
B.
I, III, and V only
C.
II and IV only
D.
I, II, III, IV and V

Answers

I can try to answer your question but there is no diagram

may you please attach a diagram to it so I can figure it out

which part of the eye contains the densest concentration of cone cells?

Answers

Answer:

The fovea

Explanation:

The fovea. It is located in the center of the retina and has the highest visual activity. It also has the densest concentration of cone cells, so this answers your question.

Have a nice day!

  I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Give examples of common parasites of
humans.

Answers

Answer:

Nematodes, Cestodes, and Trematodes.

Explanation:

if you're talking about most different types of common parasites then Protozoa and Ectoparasites. Protozoa is basically a single-celled organism that's Plasmodium, and a Ectoparasites is basically a flea that lives outside the person/host. Most likely head lice lol.

the genotype of an organism that expresses a dominant trait can be determined by

Answers

I think it is the the makeup of alleles

Cosmos episode 7
Number 12 Who are two of the scientists Clare Patterson thanks as he waits for his sample to finish in the spectrometer?

Answers

During episode 7 of "Cosmos: A spacetime odyssey", Clare Patterson thanks the scientist who have come before him, among these, he mentions Charles Lyell and Michael Faraday.

Cosmos was a popular television science documentary series. Episode 7 titled "The Clean Room", explored the work of Clare Patterson and during said episode, as he awaits the sample from the spectrometer, Patterson proceeds to give thanks for the advancement of science by those who have come before him.

Patterson states that he wishes to give thanks to scientists who have come before him and proceeds to mention names such as:

J. J. Thomson. Ernest RutherfordHarrison BrownCharles LyellMichael Faraday

all of which were renowned scientists with great contributions to the knowledge we possess today. He ends the thank you by stating that they now know the age of the Earth and with a symbolic "We did it."

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plants are interacting directly with another living component of their environment when they are

Answers

Answer:

attracting insects.

Explanation:

What kind of tissue can an ultrasound penetrate?

Answers

Answer:

I think its bone, air and hence

Explanation:

Answer:

Soft tissue

Explanation:

Soft tissue is an excellent media for ultrasound transmission.

Where would you most likely find specialized tissue?
A. In a sperm cell
B. In an egg cell
C. In a tadpole
D. In a bacterium
⭐Pls help me Fast!⭐

Answers

As stated in the preceding statement You will most probably find specialized tissue in bacteria.

The correct option is D.

Definition of a bacteria in simple terms:

The simplest single-celled organisms are known as bacteria, and they are invisible to the unaided eye. Various animals, including humans, include a wide variety of microbes both inside and outside. Additionally, bacteria are vital components of the Earth's ecosystems since they are present in food, water, soil, and surfaces.

What distinguishes a bacterium from a bacteria?

The word "bacteria," which is plural, is spelled "bacterium." To put it another way, you use the word "bacteria" when there are multiple of them and "bacterium" and there is only one.

Why do bacterial infections occur?

When bacteria taken into the body, multiply, and trigger an immune response in the body, a bacterial infection results. Through an opening within your skin, such as a cut or surgical wound, either through your airway, germs can enter your body and cause diseases like bacterial pneumonia.

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Answer:  The other person is very wrong the answer to you question

is C

Explanation:

Identify whether these molecules are carbohydrates, proteins, lipids or nucleic acids


wax

phospholipids

glucose

steroids

DNA

simple sugars

oil

disaccharides

RNA

enzymes

fats

Answers

Answer:

wax - lipids

phospholipids - lipids

glucose - carbohydrates

steroids- lipids

DNA- nucleic acids

simple sugars - carbohydrates

oil - lipids

disaccharides - carbohydrates

RNA - nucleic acids

enzymes- proteins

fats- lipids

Summarize any four ways prokaryotes are important or helpfull to the environment and human

Answers

Answer:

Prokaryotes are important to all life on Earth for a number of reasons.

Explanation:

They play a critical role in the recycling of nutrients by decomposing dead organisms and allowing their nutrients to be re-used.

They are also important for many metabolic processes. Bacteria in our guts and mouth help with the digestion of food by breaking down difficult to digest carbohydrates and other compounds. Recent research has suggested that the microbial community in our guts can be a significant factor contributing to obesity.

As humans age, the body systems are affected. The ____________ becomes thinner and less elastic due to a decrease in the number of elastic fibers and the cross-linking of collagen fibers.

Answers

Answer:

Skin, I believe

Explanation:

what is the largest land animal in the world​

Answers

Hi I know I am late but I think it is the blue whale sorry if I’m wrong

Which letter represents the hormone that promotes a decrease in blood pressure and increases the excretion of sodium and water in urine

Answers

Answer:

La hormona vasopresina promueve la retención de agua desde los riñones.

Explanation:

You are taking a hike down a forest trail and see the familiar sight of a mushroom on the ground. This visible portion of a fungal body is the structure also referred to as the:

Answers

Answer:

fruiting body.

Explanation:

Because you can actually see the mushroom

he cunsvc sj fgj fg f...

Answers

huh may you use real words?

Answer:

what in daworld

Explanation:

which muscle characteristic describes the ability of muscle to respond to a stimulus?

Answers

hiya!

"Excitability is the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone. Extensibility is the ability of a muscle to be stretched."

what hormonal signal is important in the metamorphosis of amphibians?

Answers

Answer:

Thyroid hormone (TH) is the most important hormone in frog metamorphosis, a developmental process which will not occur in the absence of TH but can be induced precociously by exogenous TH.

1. Where did Rosalind Franklin go to college and what subject did she study? ____________________________________________________________________________
2. In 1951, Franklin was offered a 3 year research scholarship where? ____________________________________________________________________________
3. Franklin worked with Raymond Gosling and was able to get photos of DNA fibers. What did she conclude from these photos (two things)? ________________________________________________________________________________________________________________________________________________________
Go to the top of the website and click on James Watson's name…..
4. What book did James Watson write and when was is published?_______________________________________________________________________________________________________________________________________________

Answers

Answer:

The answers are below!

Explanation:

1. Chemistry

2. King College In London

3. In the photos she took she revealed different shapes that are in the DNA. And also two chains of nucleotide pairs that are living things.

4. He wrote " The Double Helix".

Someone help please..

Answers

Answer:

I'm not sure how to help u shawty

Which statement best describes a polygenic trait?
A polygenic trait is only controlled by one gene and influenced by the environment.
A polygenic trait is controlled by multiple genes and influenced by the environment
A polygenic trait is only controlled by multiple environmental factors
A polygenic trait is only controlled by one environmental factor.
WILL POST ANSWER IN COMMENTS

Answers

Answer:

A polygenic trait is controlled by multiple genes and influenced by the environment.

Explanation:

A Polygenetic trait is a group of non-epistatic genes that interact to influence a trait. Essentially, in short terms Polygenetic traits are controlled by multiple genes rather then an individual inherit gene.

Hope I helped,

Brainliest is always appreciated.

Answer:

B: A polygenic trait is controlled by multiple genes and influenced by the environment

Explanation: For anyone who wants/needs an explanation

Polygenic traits basically mean the traits that are a result of multiple intertwined traits like for example skin colour.

When two people mate their traits get intertwined and the resultant trait of the baby is a result of the polygenic traits.

Polygenic traits are controlled by more than one genes. An example of this on humans is height. Not one gene controls the height of a human, many traits contribute to the height of a human.

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