Which of the following statements are true? Multiple Choice Muscles work in antagonistic pairs because if one muscle pushes during contraction, the opposing muscle across the joint must pull. Muscles work in antagonistic pairs because muscles lengthen during contraction. Muscles work in antagonistic pairs because tendons lengthen during contraction. Muscles work in antagonistic pairs because if one muscle shortens during contraction, the opposing muscle across the joint must relax.
Answers
Answer
if one muscle shorten during contraction the opposing muscle across the joint must relax
The true statement among the statements above is that Muscles work in antagonistic pairs because if one muscle shortens during contraction, the opposing muscle across the joint must relax.
For better understanding, we have to know why muscle works in antagonistic pair and the reason for this pairing.
As the name implies, Antagonistic pairs is when muscles are set down or grouped in pairs. that is when a muscle tightens or shortens (contrast) and pulls, the other muscle will then be in a relaxed state so as to allow movement.
There is a great need or importance for antagonistic pairs in muscles. That is Muscles do perform its role in an antagonistic pairs because they can only reduce (shorten)making or taking the movement in one direction. There is also the need for another muscle that shortens in order to lead/make movement go in the opposite direction.
Example of this antagonistic muscle pairs is commonly found in insects where their exoskeleton in the hind leg of the insect gives room for the muscles to work in antagonistic pairs, also the tibia flexes and others.
therefore, we can conclusively say that the statement that Muscles work in antagonistic pairs because if one muscle shortens during contraction, the opposing muscle across the joint must relax is true.
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Related Questions
In captivity, tigers and lions have been known to interbreed and produce hybrids, known as ligers. Why does this NOT make them the same species, according to the biological species concept
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Answer:
Explanation:
A cross between a tiger and a lion will produce an hybrids. During fertilization it has been observed that both the father and the mother contributes equally to the genetic makeup of the offspring this therefore will make the liger have 50%gene from the tiger and 50% gene from the lion which is different genetic makeup from the parents.
Since the parents are of two different species the offspring will always be of a different species because its makeup is genetically different from the two parents it is a combination of two species forming a new species.
If the parental species are the same i.e two lion or tiger the offspring will be of the same species but a combination of the parental gene.
How is the earth protected from the sun’s particles? Select one: a. The earth’s magnetosphere protects it b. The sun is 93 million miles away, and the particles do not impact the earth. c. The earth is not protected from solar particles. d. The heliosphere protects the earth.
Answers
Answer: A.
Explanation: The Earth has a magnetic sphere that protects it from the sun's particles. Even though the particles take a while to travel to Earth, whenever they are deflected that is what causes the Northern Lights.
The paranasal sinuses are lined with a membrane that creates mucus during allergies or the common cold. Presence of mucus and swelling of the membranes can cause a "sinus headache." If Regina has a cold and she feels the pain of a sinus headache inferior to her eyes, which bone is housing the affected paranasal sinus?
Answers
Answer:
The maxillary sinus, that is, the sinus located in the upper jaw, would be affected.
Explanation:
Sinusitis is a very traditional disease that is associated with headache, discomfort, and increased mucus making.
The causes can be viral or bacterial or even by some inhaled noxa, sinusitis of this type is bilateral, different from sinusitis of dental cause that are usually unilateral.
The paranasal sinuses are the sinuses that pneumatize the head, that is, they generate an internal air current in the bones to be able to heat and disinfect them from those noxas that are inhaled (that is why they are covered by a ciliated mucosa that drags the noxa to the outside and also its structure is pseostratified with mucous cells that secrete mucus enveloping the noxa).
Another function of the paranasal sinuses is to be able to alleviate the weight of the head, since the shell and the bones that remain in the head formation are very heavy, thus generating these cavities filled with air to alleviate the feeling of "heavy head" "When they become inflamed and filled with mucus, they are obliterated or with a reduced space, so the head feels heavier for some people.
The paranasal sinuses are the maxillary sinuses that are in the upper jaw, the sphenoid sinuses that are in the sphenoid, the ethmoid sinuses that are in the ethmoid and the frontal ones that are in the frontal bone that is vulgarly called as the forehead.
A storm brings two formerly separated populations of beetles together. They look very similar. Under the biological species concept, which of the following would show that the two populations are different species?
A. One population breeds in spring, the other in fall.
B. Males of the two populations have different flight patterns in courtship.
C. When individuals from the two populations mate with each other in the laboratory, the eggs fail to hatch.
D. All of the above is correct.
E. None of the above is correct.
Answers
Answer:
The correct option is D: All of the above is correct.
Explanation:
The biological species concept says that species are population groups that, in a real or potential way, can reproduce among each other and that are reproductively isolated from other groups.
Individuals belonging to a species cannot mate with members of other species, and if they do there is not any reproductive success.
The mechanisms of reproductive isolation might be divided in prezygotic and postzygotic.
Prezygotic or Premating mechanisms:
Ecological or due to habitat isolationSeasonal or temporal. This is the case described in option A "One population breeds in spring, the other in fall". These species are reproductively isolated because they differ in their breeding season.Sexual or ethological. This is the case described in option B "Males of the two populations have different flight patterns in courtship". Males belonging to each species behave differently during courtship. MechanicalGametes incompatibilityZygotic or Postmating Mechanisms:
Hybrid inviability. This is the case described in option C which states that "When individuals from the two populations mate with each other in the laboratory, the eggs fail to hatch". Eggs fail to hatch because the zygote is inviable. Hybrid sterilityHybrid decreased fertilityWhich of the following biological macromolecules is correctly paired with one of its functions?
Choose ONE answer:
A. Proteins ----> provide cell structure
B. Carbohydrates ----> store genetic information
C. Nucleic acids ----> digest dead cells
D. Lipids ----> give quick energy to cells
Answers
they play many critical roles in the body, and are required for cell structure, function, and regulation of body tissues and organs :)xx
Of the given options, proteins is correctly paired with its function, that is, provide cell structure.
What are proteins and their functions?They are the large and complex molecules, which perform many essential roles in the body. They perform majority of the function in cells and are needed for the structure and function of the cells. Apart from this, they also play an essential role in the regulation of the tissues and organs of the body.
Of the different kinds of proteins found in the body, the structural proteins provide structure and support for the cells. On a bigger scale, they also help the body in movement, for example, actin protein.
Thus, the correct answer is option A.
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What three different genotypes are possible for an individual in this population
Answers
Answer:
With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa
Explanation:
Pls mark as brainliest answer
What is the main function of the human immune system?
O A. To protect internal organs and assists in movement
O B. To collect and respond to information about the internal and
external environment
O C. To protect the body against infection
D. To transport oxygen and nutrients to the body's tissues
Answers
Answer:
to protect the body from infection
Which characteristic is one of the three main characteristics used to classify igneous rocks?
Answers
Answer: Texture
Explanation: the rate at which the rock had cooled when molten magma was cooling gives out a clear comparrison of the rocks which is the texture
Answer:
Explanation:
Texture
Which of the ideal criteria for a successful screening program is satisfied by the following statement: Screening those older than 50 years using fecal occult blood testing every year and flexible sigmoidoscopy every 3-5 years have been shown to be effective strategies for screening for colon cancer?
A. Early detection improves outcome.
B. The disease produces substantial mortality or morbidity.
C. There is a feasible testing strategy.
D. Screening is acceptable in terms of costs, harms, and patient acceptance.
Answers
Answer:
A. Early detection improves outcome.
Explanation:
These screening tests are carried out in order to the medical condition of the people who are older than 50 years. These screening tests tells us about the disease in early stages. The disease can be cured if they are diagnosed in early stages so early detection of the disease plays important role in saving the life of the patient from that dangerous disease and the results are in favor of the patient. If these screening tests are not carried out earlier so the disease may cause serious damage which leads to death.
Crosses between red and white true-breeding plant types yield offspring that are pink in color. When these pink offspring are crossed with other pink individuals, the resulting progeny show a range of color. This result is consistent with the theory of
Answers
Answer:
The correct answer is - particulate inheritance.
Explanation:
The theory of particulate inheritance expresses that discrete "particles" are passed from one generation to another generation offspring. While Mendel utilized the term particles, we presently realize that these particles are really genes.
For instance, codominance in the flower of two distinct colors present in the different alleles of genes expressed or visible together without mixing and can be communicated distinctively in later generations individually.
Thus, the correct answer is - particulate inheritance.
Fill in the blanks:
1. Light-touch receptor located at the epidermal-dermal border:__________.
2. Light-pressure receptor located in papillary layer of dermis: ____________.
3. Deep pressure receptors:__________.
4. Receptors that respond primarily to pain and temperature:________.
a. Merkel cells.
b. nociceptors.
c. lamellated corpuscle.
d. tactile corpuscle.
Answers
Answer:
1. merkel cells
2. tactile corpuscle
3. lamellated (lamellar) corpuscle
4. nociceptors
Explanation:
Merkel cells are epithelial cells found around hair follicles which are capable of sensing gentle touch sensations such as, for example, tactile discrimination and environmental exploration. Tactile corpuscles are a class of nerve ending required for mediating sensitivity to light touch sensations. The lamellar corpuscles are another class of nerve ending capable of sensing deep touch sensations and vibrations. Finally, nociceptors are somatic sensory receptors capable of sensing noxious (damaging) stimuli.
1. Light-touch receptor located at the epidermal-dermal border: Tactile corpuscles (D)
Light-touch sensors called tactile corpuscles, sometimes referred to as Meissner's corpuscles, are situated near the epidermal-dermal boundary. They are located in the papillary layer of the dermis's dermal papillae, which are tiny, finger-like projections.
Particularly dense populations of tactile corpuscles can be seen in skin regions like the lips, palms, and fingertips that are sensitive to gentle touch.
2. Light-pressure receptor located in the papillary layer of the dermis: Merkel cells (A)
3. Deep pressure receptors: Lamellated corpuscle (C)
4. Receptors that respond primarily to pain and temperature: Nociceptors (B)
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Not all of the members of everyday categories have the same. Most fish have gills, fins, and scales. Sharks lack the feature of scales, yet they are still categorized as fish. This is most problematic for the __________ approach to categorization.
Answers
Answer:
species to
Explanation:
: What is lymph? What is lymph? thick carbohydrate matrix that supports cells in various tissues of the body the portion of blood that contains red blood cells the layer of lipids that collects under the skin for protection and insulation protein-rich blood plasma that has left capillaries the portion of blood that contains white blood cells and platelets
Answers
ANSWER;
protein-rich blood plasma that has left capillaries
Lymph is un reabsorbed interstitial fluid which are trapped in the capillaries called lymph capillaries. it is pale in color(compare to red of the the blood),and continuously flood the body tissues for fluid balance and waste removal.
Macrophages and lymphocytes (WBC) are the principal cellular components,however it also contain proteins,lipids.It is similar to blood plasma,except for higher amounts of lipids but will lesser amount of WBC and platelets.
Its special channels are the lymphatic vessels of the lymphatic system,which are the lymph nodes and vessels.
The functions of Lymph are:
Responsible for the removal of tissues bathing the tissues(Interstitial fluids ) from the tissues.
Transport of fats from the lacteal during absorption.
Transport of WBC across from the L.nodes to the bone.
it also mediates in immune response,through the transport of antigen-presenting cells.
it is similar to blood because it is a circulating fluids,through special vessels,and both linked by network of capillaries.
However, more wbc,rbc,platelets,oxygen are present in blood than the lymph. In addition because it returns proteins,it is said to contain proteins,but in actual sense if lacks protein
A large asteroid impact occurs, kicking up dust that blocks the Sun and prevents plants from photosynthesizing. What would most likely happen as a result of the asteroid impact? More earthquakes would occur across the planet. Some plants would evolve to use dust as a source of food. Many plants would perform photosynthesis without sunlight. Many species would eventually die off because they lack a food source.
Answers
Answer:
Many species would eventually die off because they lack a food source.
Explanation:
Photosynthesis can be defined simply as the biological process of using light to synthesize food (in the form of glucose). It is a process that takes place in plants and involves the synthesis of sugar using inorganic products such as water and carbon dioxide.
[tex]6CO_2 + 6H_20 + (energy) → C_6H_1_2O_6 + 6O_2[/tex]
The process consists of two stages namely;
Light reactionLight independent reaction.The products from the light reaction are utilized in the light-independent reaction.
Hence, without light energy, the process of photosynthesis cannot proceed and plants will not be able to manufacture foods. Without foods, many plant species would die off.
Answer:
I'm pretty sure it's D and not C.
Explanation:
Food (plant) sources would be reduced since the dust is blocking the sun and not allowing Plants to grow.
Which of the following is not a Eukaryote? A. Bacteria B. Mushroom C. Human D. Oak tree
Answers
Answer:
A. Bacteria
Explanation:
Cells that contain a cytoskeleton, organelles surrounded by cytoplasm, nucleus surrounded by nuclear envelope, etc. are called eukaryotic cells. Animals, plants, and fungi are all made up of eukaryotic cells, but bacteria are not (they are prokaryotes).
hope this helps!
Determine the correct sequence of events during the creation of recombinant DNA.
I. Plasmid is cut open with enzymes
II. Target gene is cut out with enzymes
III. Plasmid is inserted into the bacterium
IV. Target gene is bonded to the plasmid with Ligase
A. IV, I, II, III
B. II, I, IV, III
C. I, II, III, IV
D. IV, III, I, II
Answers
Answer:
I believe the correct answer to your question is A
IV, I, II, III
which of the following adaptions allowed plants to transport water and nutrients from the soil to all of the cells within the plant?
A. Vascular system
B. Leaves
C.Cuticle
D. circulatory system
Answers
Answer:
c
Explanation:
I took the test
Answer:
D. circulatory system
Explanation:
Circulatory system is the method of transport of plants and animals. It gives the plants nutrients and carbon dioxide in every cell and release waste products from their system.
While studying a newly discovered prokaryotic organism, you notice that it uses binary fission to multiply. Based on your knowledge of the structures and processes of eukaryotes and prokaryotes, predict how this form of division would differ from mitosis and meiosis.
Answers
Answer:
Binary fission is different from mitosis and meiosis because it occur in prokaryotic cells. And prokaryotic cells does not have nucleus like the eukaryotic cells and there is not mitotic spindle formation during binary fission compared to mitosis and meiosis.
Explanation:
Binary fission is a process of cell division where a single cells divide into two or more parts and the parts regenerate into another organisms which resembles the parent organisms. This occur only in prokaryotic cells and is very different from mitosis and meiosis that occur in eukaryotic cells because prokaryotic cells lack nucleus and no spindle formation in the nucleus.
Mitosis occur in eukaryotic cells because they have nucleus and membrane bound organelles and is the process where a parent cell divide to produce two daughter cells that are genetically identical to the parent cell and each cell having the same number of chromosomes of the parent cell.
Meiosis is a type of cell division that occur in eukaryotic cells and it occur in sex cells where a single cell divide into four daughter cells with each having half number of parent cell chromosomes.
Question 7 of 18
What is the standard deviation of this data set? Use a calculator to help you.
Round your answer to the nearest tenth.
11, 16, 22, 28, 29, 30, 31, 34, 37, 38, 43, 49, 56, 78, 99
O A. 25.9
O B. 23.2
O C. 29.3
O D. 27.5
PREVIOUS
Answers
Answer:
23.2
Explanation:
what is scientific advancement? describe characteristics
Answers
Scientific or technological advancement is the generation of information or the discovery of knowledge that advances the understanding of scientific relations or technology. This definition encompasses the definition of scientific advancement, advancement of scientific knowledge and technological advancement. The only difference is that scientific advancement and advancement of scientific knowledge relate to science whereas technological advancement relates to technology.
identify the sphere wher life first emerged on earth hydrosphere, lithosphere, atmossphere
Answers
Answer:
hydroshere
Explanation:
hydro=water
Answer:
you're answer would be hydrosphere
Explanation:
Life on Earth, emerged in the hydrosphere, at least from the findings and data so far. The reason for that was that the atmosphere and the lithosphere were still in a faze were they were not very hospitable for any living organisms to develop. The hydrosphere, or the water bodies, on the other side, were enabling conditions for life, not perfect or as we have today, but still reasonably good, so the life started developing into the water environment, and after the atmosphere and lithosphere changed over time, it spread on them as well.
hope this answer is correct :)
Describe the importance of photosynthesis in producers
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answer the questions above
Answers
Answer:
Hey there!
3) Well injection is usually done through the vein because they need the substance to go into the blood.
4) Some people believe that the heart is on the left side because its the left ventricle and atrium responsible and when people hear left they think the heart is on the left.
5) People living in high altitudes don't get as much oxygen so their bodies evolved into carrying ,more RBC so more oxygen is carried into their bodies.
Hope this helps :)
An adult with a history of tanning has his genome sequenced. The beginning of a protein-coding region of his DNA reads ATGGGGATATGGCAT. If the protein-coding region of a healthy adult reads ATGGGGATATGAGCAT, identify the site and type of mutation.
Answers
Answer:
Explanation:
The protein-coding region of a healthy adult reads ATGGGGATATGAGCAT.
The beginning of a protein-coding region of the tanning individual DNA reads ATGGGGATATGGCAT
The site of mutation is close to the end - GGCA - between the two G's, a base (A) has been deleted.
Thus this type of mutation is termed deletion: a process whereby one or more bases are removed from a nucleotide sequence of DNA.
The images show fossils of a modern bird and two extinct organisms( a Tyrannosaurus rex and archaeopteryx). Based on the structure of the three organisms, it can be concluded that blank . The archaeopteryx and have wings, while dinosaurs have limbs. So, it can be concluded that blank.
Answers
Answer:
Many individuals consider that Archaeopteryx would have been the first bird, however, many paleontologists are against it. The findings of many fossils of Archaeopteryx have revealed that though the creature exhibited wings, the majority of its characteristics were of reptile, like the existence of full teeth set. Apart from this, the wings formation of the creature demonstrated that it was not completely capable of flying.
No matter what, the presence of wings makes them closely associated with the modern time birds. Thus, it can be concluded that Archaeopteryx could be considered as an intermediate between the reptiles and the birds and is a precursor to the modern-day birds' evolution.
What is endocrine system? What are its functions? Name the important endocrine glands present in a human body. Draw a labelled diagram to show the positions of these endocrine glands in the human body (male/female)
Answers
Answer:
endocrine system produces hormones required to coordinate reactions in the body.
Question 1 of 10
10 Points
You are working to catalogue some of the species in the Amazon rainforest
before they become extinct from logging. You collect 3 organisms that all look
similar to the Coral snake and do a phylogenetic analysis on them before
classifying and naming them. The Coral snakes DNA barcode is
ATTCGCGATAC. Compare it to each sample organism's DNA barcode to
determine how related they are to the Coral Snake, from closest to furthest.
Organism 1: ATTGGCCATAC
Organism 2: ATCCGGGATAG
Organism 3: ATTCGCCATAC
Answers
Answer:
The organism closest to the coral snake is organism 3, followed by organism 1 and finally organism 2.
Explanation:
The more similar the DNA composition of the organisms, the closer and more closely related they are. With that we can say that the coral snake is closer to organism 3, since the sequence of nitrogenous bases in its DNA is more similar, in relation to other organisms. After organism 3, it is organism 1 that most resembles a coral snake. Organism 2, however, has a different DNA composition, the organism being less similar and the more distant from the coral snake.
Tachycardia, decreased or absent breath sounds on the affected side, hyperresonance, and sudden chest pain on the affected side are clinical manifestations of:__________
A) Sarcoidosis
B) Pneumothorax
C) Hypersensitivity pneumonitis
D) adult respiratory distress syndrome
Answers
Answer: Option B.
Pneumothorax
Explanation:
Pneumothorax occurs when air buildup between the chest wall and the lungs thereby leading to increased pressure in the chest and it inturn decrease the amount of blood that flow back to the heart because the blood find it difficult to force it's way into the chest and the heart. This is cause by injury to the chest, lung danage, rupture air blisters and mechanical ventilation.
The symptoms include decreased or absent breath sounds on the affected side, hyperresonance, and sudden chest pain on the affected side , racing heart, shock.
When a pneumothorax is large, a needle or tube is used to remove excess air.
Which amino acid chain will be formed by the codons shown below?
ACU CCA UCG
Messenger
Second base in codon
RNA Codons U
С
A
G
UUU UCU
UAU
UGU U
UUC
Phe
UCC UAC
Tyr
UGC
Cys
U
Ser
UUA
Leu
UCA UAA Stop UGA Stop A
UUG UCG UAG Stop UGG Tep G
CUU CCU CAU CGU
U
His
CUC ССС CAC) CGC
Leu
Pro
Arg
CUA CCA CAA CGA
A
Gin
CUG CCG CAG CGGI G
AUU) ACU
AAU
U
Asn
AGU
SC
AUC
lle ACC
AAC AGC
A
Thr
AUA ACA ААА AGA
AUGStart Me ACG AAG AGG
GUU GCU GAU GGU
U
Asp
GUC GCC GAC GGC
С
Val
Ala
Gly
GUA GCA
GGA A
GUG GCG GAG) GGG
G
c
First base in codon
= 0 < =0 < = conoco
Third base in codon
Lys
Arg
G
GAA Glu
A. Thr-Pro-Phe
B. Thr-Pro-Ser
C. Asn-Pro-Ser
D. Thr-Ser Pro
Answers
Answer:
the answer is b. thr-pro-ser
The amino acid chain which will be formed by the codons "ACU CCA UCG" will be Threonine-Proline-Serine. Thus, the correct option will be B.
What is amino acid chain?An amino acid can be defined as the fundamental molecule which serves as the building block for protein molecules in the body. There are about twenty different amino acid molecules present inside the body of an organism. A protein molecule consists of one or more chains of amino acid molecules called as polypeptides whose sequence is encoded in a gene.
Different codons are present in the cell which encodes for different amino acids. A codon is a set of three nucleotides which encode amino acid molecules. ACU codon encode for threonine amino acid, CCA encode for Proline amino acid, and UCG encode for Serine amino acid.
Therefore, the correct option will be B.
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Help pls. ive been stuck on this for a long time
Answers
Answer
Tundra: lichens and moose
Taiga: cone-bearing evergreens and timberwolves
Deciduous Forests: broad leafed trees and ptarmigans
Grasslands: grasses and hyenas
Rainforests: air plants and parrots
Desert: succulent plants and dingo dogs
hope it helps