Answer:
The extensor digitorum communist muscles extend the WRISTJOINT.
Explanation:
extensor digitorum communis muscle is an important muscle that is found at the backside or posterior compartment of the forearm.
It originates from the lateral epicondyle of humerus to the medial four phalanges of the hand.
The muscles help in hand and elbow movement.
This muscle give extension to finger 2 and 5 that is phylanges, hand and wrist. It also three extensor carpi muscles.
A researcher has three different stains that differentiate between keratin, actin, and tubulin when the cells are fixed and stained for microscopic analysis. Which of these stains will the researcher be able to use to study cytoskeletal structures that are stable and do not have the property of dynamic instability
Answer:
Acti-stain => They are stable and do not have the property of dynamic instability.
Explanation:
There are different types of stains in the world of science (biological sciences) today. Staining is used to make differentiation between two or more different samples(microbiology).
So, in organisms that has a well defined nucleus we can find actin, keratin and Tubulin in their cytoskeleton as fibres. The staining process or techniques can be used in differentiating them.
Actin can be found in the cells located in the muscles and also very useful in motility.
Acti-stain for instance, acti-stain 488 was used in staining yeast cells and they are stable and whenever they stain, they are fixed.
Why is it difficult to establish rules, regulations and laws to protect sea turtles over their entire range
Answer:
The reason why it is difficult to create rules, regulations and laws to protect sea turtles over their entire range is that, it would take a concerted effort on a global scale to achieve that. The logistics and administration of such efforts of would take some years to work out.
Explanation:
Answer:
The reason why it is difficult to create rules, regulations and laws to protect sea turtles over their entire range is that, it would take a concerted effort on a global scale to achieve that. The logistics and administration of such efforts of would take some years to work out.
Explanation:
Sea turtles can be found around the world. The efforts described above, therefore, would require that many different countries and cultures would have to cooperate as well as own their share of the responsibility required to make it so.
Legislation with regard to the efforts would need to be executed if not simultaneously, at least over approximately the same block of time.
Not only that, it would require tons of research as the peculiarity of each geographical location would be considered.
Cheers!
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If there are 12 chromosomes in an animal cell in the G 1 stage of the cell cycle, what is the diploid number of chromosomes for this organism?
Answer:
The gametes are haploid, having half the number of cells as compared to somatic cells. The gametes or sex cells produced by the organism will have 6 chromosomes if the organism has 12 chromosomes
Explanation:
What do you think might happen to tissues such as the intestinal lining if a disorder blocked mitotic cell division in all cells of the body
Answer:
This is what actually happens with chemotherapy for cancer. Drugs are given which inhibit cell division. Cells such as tumour cells, which are rapidly dividing are affected most, then other dividing cells such as the epithelial lining of the gut, which nedds cell division to repair itself. The result is ulceration and bleeding.
hope this answer is correct
Which of the following statements is true?
-Diffusion describes the concentration gradient in a solution.
-Diffusion regulates which molecules can and can't pass through a plasma membrane.
-Diffusion is the movement of water across a selectively permeable membrane.
-Diffusion does not require energy and is therefore a form of passive transport.
Answer:
Diffusion is the movement of water across a selectively permeable membrane.
Explanation:
Hope it helps.
The statement which is true about diffusion is as follows:
Diffusion does not require energy and is therefore a form of passive transport.Thus, the correct option is D.
What is Diffusion?Diffusion may be defined as the movement of substances from a region of higher concentration gradient to a region of lower concentration gradient through a semipermeable membrane.
Diffusion not only facilitated the movement of water across a selectively permeable membrane but also other substances as well. Diffusion only regulates the movement of those molecules which can pass through a plasma membrane.
It is the means of movement of substances that do not require any form of energy. And thus, diffusion is significantly a form of passive transport.
Therefore, the correct option for this question is D.
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An atom has a mass of 35 a neutron mass of 35 and an electron mass of 35. What is the estimated mass of the atom
The estimated mass of the atom is 70 amu...
ExplanationAn atom has a proton mass of 35 and a neutron mass of 35 , Mass of an atom is equal to the sum of number of protons and number of neutrons .
In this case , number of protons p = 35 Number of neutron n = 35 So , the estimated mass of the atom will be :-
M 35 protons + 35 neutrons = 70 amuhope this answer correct (^^)....
Three types of threats to biodiversity are:
habitat loss and fragmentation
the introduction of exotic, or non-native, species
overexploitation, or overharvesting
Determine the type of threat that each of the following statements describes.
a. Small rainforest remnants have less diversity than larger rainforest remnants.
b. Melaleuca trees from Australia displace native wetland vegetation in Florida.
c. Wild American ginseng populations have declined as a result of increased demand for the roots.
d. A wetland is drained to make room for a housing development.
e. Florida panthers were geographically cut off from other panthers about 100 years ago.
f. Cod are caught faster than they can reproduce.
g. South American rodents called nutria eat wetland plants and cause bank erosion in the United States,
h. Some fishing nets damage the seafloor.
Implanting an electrode that supplies a weak electrical current to specific brain areas is called _____. It is useful in the treatment of _____
Answer:
Deep Brain Stimulation (DBS)
Depression, Uncoordinated body movements such as in Parkinson's disease
Explanation:
Deep brain stimulation is a surgical procedure in which a device that sends electrical impulses to the brain by means of lead wires connected to electrodes placed in the specific areas of the brain, is implanted in the body, typically the chest region.
This surgical procedure is usually required to treat diseases in which there is irregular and improper nervous stimulation of the brain resulting in various nervous disorders such as irregular muscle movements as in Parkinson's disease as well as depression.
The impulses sent from the stimulator device to the electrodes in the brain through the wires, serves to stabilize and normalize nerve signals sent to the brain.
A circular double-stranded DNA molecule contains 4200 base pairs. In solution, DNA is in a B-form helix, with about 10.5 base pairs/turn. The DNA has 12 superhelical turns. What is its superhelix density
Answer:
The correct answer is - 3 × 10⁻²
Explanation:
first find LKo = length of BDNA/ 10.5 bp/turn
= 4200/10.5
= 400
now calculate Δ LK= LK - LKo
ΔLK = 412-400
ΔLK = 12
now, superhelix density = ΔLK/LKo
⇒ 12/400 = 0.03
= 3×10⁻²
Thus, the correct answer is - 3 × 10⁻²
The specialized soft tissue manipulation technique used to ease the pain of conditions such as fibromyalgia, movement restrictions, and temporomandibular joint (TMJ) disorders is known as _____.
Answer:
myofascial release
Explanation:
The fact that each plant gets only one allele from each parent plant is detailed in the law of
Answer: segregation law
Explanation:
Drag each label to the correct location. Each label can be used more than once. In a hydropower station, water stored in dams is allowed to fall with force to make a turbine move. The turbine moves and produces electricity. In the diagram, identify the stages of transformation of energy in the hydropower station. Please help!!
(Fill in left to right of the blanks) gravitational, kinetic, kinetic, electric
The process of dragging the labels to their correct location is represented as follows:
The blank that indicates the stored water signifies the gravitational energy, the water that falls down through the dam and moves turbines in order to produce electricity illustrates kinetic energy, and finally, it produces electric energy. What is Energy transformation?Energy transformation may be defined as a process through which one form of energy gets transferred into another form due to the action of numerous external attributes.
In the diagram given above, the process of energy transformation is remarkably depicted with each form of energy with respect to their attributes. The kinetic energy deals with the movement of any object, particle, or body.
Therefore, the process of dragging the labels to their correct location is well represented and described above.
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How did the Rf values differ between pigments and solvents?
Answer:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper.
Explanation:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper. Small Rf values tend to indicate larger, less soluble pigments while the highly soluble pigments have an Rf value near to one.
The order Primates includes Group of answer choices monkeys, prosimians, humans and apes. only monkeys. only humans. only apes. only monkeys, apes and humans.
Answer:
monkeys, prosimians, humans and apes
Explanation:
The correct answer would be monkeys, prosimians, humans and apes.
Primate represents an order within the Mammalian class. The group consists of animals that fall into two sub-orders - the strepsirrhines which consist of lemurs, lorisoids, etc, and the haplorhines which consist of monkeys, apes, and humans.
Collectively, the apes and the monkeys are categorized as simians while all other animals primates are referred to as the prosimians.
Hence, monkey, prosimimians, humans, and apes tend to cover all the groups under the primate order.
Answer:
monkeys, prosimians, humans and apes
Explanation:
AMSCO
Lysosomes are responsible for
Answer: the digestion of macromolecules, old cell parts, and microorganisms.
Explanation:
Answer:
(in the explanation)
Explanation:
This is a membrane-bound cell/organelle that includes digestive enzymes. They are included in many cell processes. They decompose or break down excess and worn down cells. They can build up your immune systems and kill and virus or bacteria.
what happens when we eat a lots of fried food
Answer:
Eating a lot of fried food can cause a greater risk of developing heart disease, chronic disease, and obesity.
Starting with the illuminator and ending with your eye, describe the path of light traveling through a microscope with a specimen on a slide.
Answer:
A) Light, originates from source
B) With the help of the condenser, it becomes focused onto the specimen on the slide
C) The light then enters the objective lens which magnifies the image.
D) The magnified image/light then passes through a series of mirrors and prisms made of glass and eventually entering the eyepiece
E) The eyepiece further magnified the image then throws it to be received by the eyes.
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Which structure of a paramecium is analogous to a “reserve copy” of all the cell’s genes
Answer:
micro nucleus
Explanation:
Which of the following sustainable practice
Answer: c?
Explanation:
i believe these may be the options . if i had to guess, it would be c
A)
Leaving trash bags at a local park
B)
Throwing jars in the trash can
C)
Using only geothermal energy
D)
Flushing medicine down the toilet
1. List five processes that are regulated by the hypothalamus: A. __________________________________________ B. __________________________________________ C. __________________________________________ D. __________________________________________ E. __________________________________________
Answer:
Answered below
Explanation:
The hypothalamus is a small part of the brain located at it's base near the pituitary gland. It has three main regions and each region contains different nuclei. These neurons perform different important functions in controlling the many physiological processes and in the maintenance of homeostasis in the body. Five of such processes that are regulated by the hypothalamus include;
1) The hypothalamus regulates the release of hormones by producing hormone releasing factors which trigger or inhibit the release of hormones form other parts of the body.
2) Regulation of body temperature.
3) Regulation of blood pressure and heart rate.
4) Regulation of appetite and weight control.
5) Regulation of the volume of body fluids.
What does swelling of the Lymph nodes indicate
Answer:
Swelling of the lymph nodes is a sign that they are being overworked.
Explanation:
Unnecessary waste could be building up in your lymph nodes and this can also signal that you may have an infection.
Hope this helped! :)
what is a part of interphase A. cytokinesis B. telophase C. anaphase D. s phase
Answer:
D
Explanation:
I did it on my own soci know it's the answer
In the context of interphase, the S phase is the specific part where DNA replication occurs, contributing to the overall process of cell division and ensuring the transmission of genetic material to new cells and the correct option is option D.
Interphase is the longest phase of the cell cycle, and it is divided into three main stages: G1 phase, S phase, and G2 phase. Among these stages, the S phase is specifically responsible for DNA replication. It is during the S phase that the cell's DNA is duplicated in order to prepare for cell division.
During the S phase, the DNA helix unwinds, and the two strands separate. Enzymes and proteins then work together to synthesize new complementary strands for each of the separated DNA strands. As a result, two identical copies of the DNA molecule are produced.
The S phase plays a crucial role in maintaining the genetic integrity of the cell. By accurately duplicating the DNA, the cell ensures that each daughter cell formed during cell division receives an identical set of genetic information. This is vital for the proper functioning and development of organisms.
Thus, the ideal selection is option D.
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Novobiocin is a bacteriostatic, narrow-spectrum antibiotic that targets _____ in some Gram-positive bacteria.
Answer:
Novobiocin target DNA GYRASE of gram positive bacteria.
Explanation:
Novobiocin is a bacteriostatic(slow down bacteria growth) or bactericidal i.e it kills bacteria , narrow spectrum antibiotics that target DNA GYRASE of gram positive bacteria. It acts by inhibiting the bacteria DNA gyrase hydrolysis thereby by interfering with the metabolic activities of bacteria. It is also a weak catalytic inhibitor of mammalian. Novobiocin inhibit DNA gyrase and topoIV by binding to the ATP pocket of GyrB and ParE, respectively.The Streptomyces strain that produces Novobiocin and it is more effective on gram positive bacteria that gram negative bacteria because gram negative bacteria are resistant to it.
mechanism of the formation of urine
Explanation:
Filtration, Reabsorption, Secretion: The Three Steps of Urine Formation. The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion.
Which of the following describes a benefit of membership in a research community?
Answer:
knowledge and valuable resources are shared among scientists
Explanation:
The best benefit and reason for joining a membership in a research community is that knowledge and valuable resources are shared among scientists. Since the entire community is working towards a common goal, then gaining information from everyone in order to get closer to that goal is priceless. Also, the ability to use high-end resources that would be impossible to use as a lone scientist due to its high price is also a very valuable benefit.
the clean water act ___
set maximum contaminant levels for drinking water
required industries to reduce or eliminate point source pollution in surface waters
established national ambient air quality standards
requires that pollution control devices be installed on cars and trucks and at factories
Answer: The Clean Water Act required industries to reduce or eliminate point source pollution in surface waters
In a certain variety of lentils, one gene controls color: red is completely dominant to orange, while a second independent gene controls pattern: large spots are co-dominant with small dots. A dihybrid cross involving these two genes should result in:
Answer:
a phenotypic ratio 9:3:3:1
Explanation:
one gene controls color: red (R) is completely dominant to orange (r) a second independent gene controls pattern: large spots (L) are co-dominant with small dots (l)A dihybrid cross involving these two genesCross:
Parental) RrLl x RrLl
Gametes) RL Rl rL rl
RL Rl rL rl
Punnet Square) RL Rl rL rl
RL RRLL RRLl RrLL RrLl
Rl RRLl RRll RrLL Rrll
rL RrLL RrLl rrLL rrLl
rl RrLl Rrll rrLl rrll
F1) 9/16 R-L-, red and large spotted individuals
3/16 R-ll, red and small dotted individuals
3/16 rrL-, orange and large spotted individuals
1/16 rrll, orange and small dotted individuals
Note: The symbol "-" refers to either the dominant allele or the recessive one
Different types of protists move in different ways. Describe how one type of protists you observed moves. Be specific.
Answer:
Euglena is a protist and it moves with the aid of structures called flagella
Explanation:
Flagella are known as locomotive cells which propels from the body parts of organisms . They are made of protein structures and formed in a helical manner.
They are whip like structures and usually helps in the movement of the protists through liquid surfaces through the whip like movement of the flagella.
Three different small organic ligands can each bind to a protein but only one ligand can bind to the protein at a time. The KD for ligand 1 binding to the protein is 100 nM The KD for ligand 2 binding to the protein is 72 nM The KD for ligand 3 binding to the protein is 9 nM Which of the three ligands binds tightest to the protein?
Answer:
Explanation:
The binding affinity in ligand binding is measured using the equilibrium dissociation constant (KD).
The larger the dissociation constant value, the more weakly the target molecule and ligand are attracted to and bind to one another.
This, in this case study, the ligand that binds tightest to the protein is ligand 3 with a binding affinity of 9nM followed by Ligand 2 and then 1.
What is the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic
potential?
Answer:
A postsynaptic potential is defined as excitatory if it makes it easier for the neuron to fire an action potential. ... A postsynaptic potential is considered inhibitory when the resulting change in membrane voltage makes it more difficult for the cell to fire an action potential, lowering the firing rate of the neuron.
Bu definition, the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential is the ion channels that these open.
The binding of neurotransmitters to their receptors can produce different effects on the postsynaptic neuron, including the opening of ion channels. This causes changes in the membrane potential and leads to the generation of postsynaptic potentials. These postsynaptic potentials can be of two types: postsynaptic excitatory potentials and postsynaptic inhibitory potentials.
In other words, depending on the type of ions that allow the receptor-channels or channels that were activated directly or indirectly by the neurotransmitter to pass, the postsynaptic potential generated may be depolarizing (excitatory postsynaptic potential) or hyperpolarizing (inhibitory postsynthetic potential).
The inhibitory postsynaptic potential changes the charge of the neuron to make it more negatively charged, that is, the membrane potential becomes more negative (hyperpolarizations).
In contrast, an excitatory postsynaptic potential is a change in the electrical charge of a nerve cell or neuron. The neuron begins with a negative charge, but the excitatory postsynaptic potential makes this charge more positive, that is, the membrane potential becomes less negative (depolarization).
So the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential is the ion channels that these open. The binding of neurotransmitters to their receptors can produce different effects on the postsynaptic neuron, including the opening of ion channels. This causes changes in the membrane potential and leads to the generation of postsynaptic potentials.
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