Answer:
Explanation:
This is the process of muscle contraction and relaxation in the muscle. The type of muscle involved is the skeleton muscle.
The process is initiated in the Central nervous system. Examples are in contraction of biceps and triceps.
It involves myosin head and actin filament coupled with the release of calcium ion from the sarcoplasm reticulum: this ion activates this process in the muscles. With the exposure of the music binding site on the acting filament, myosin is able to bind to acting filament bringing about this process.
a. ATP attaches to myosin head
b. Myosin head is re-energized
c. Myosin head forms cross bridge with actin
d. Power stroke moves thin filament
e. Cross bridges detach from actin
f. Myosin binding sites covered
g. Calcium ions pumped into the sarcoplasmic reticulum
h. Calcium ion concentration decreases below the threshold for binding to troponin.
Muscle contraction results from the interaction between actin and myosin filament proteins.
During muscle contraction, ATP binds to myosin, which passes to a high-energy state and it allows actin and myosin to detach from each other.The sarcoplasmic reticulum (SR) is a specialized type of endoplasmic reticulum in muscle cells that acts to regulate the concentration of cytosolic calcium (Ca2+).The sequential steps are as follow:
Myosin head forms cross bridge with actinPower stroke moves thin filamentATP attaches to myosin headCross bridges detach from actinMyosin head is re-energizedCalcium ions pumped into the sarcoplasmic reticulumCalcium ion concentration decreases below the threshold for binding to troponinMyosin binding sites coveredIn conclusion, muscle contraction results from the interaction between actin and myosin filament proteins.
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As global warming continues the oceans absorb more of the earths heat. What term describes the ocean as a storage location for this heat
Answer:
do you have any options for this question?
In your own words, explain why the geological structures in Florida are less complex than the geological structures in Colorado.
Answer:
Different parts and regions have distinct features and characteristics.
Colorado is known to have lots of mountains. Florida is however a humid-subtropical region. This makes differences in the types of loving organisms found in the named region. There are also different ages in geological structures.
Colorado has lots of rocks in the region and is as result of the presence of rigid hills and mountains while Florida is more tropical and has a coastal processing climate with low prevalence of rocks.
Identify the correct statements about transcription(Tnx) and (Tnl) translation in prokaryotes and eukaryotes.
A. Prokaryotes conduct Tnx and Tnl together in the same cellular compartment.
B. Eukaryotes do Tnx in the nucleus and Tnl in the cytoplasm.
C. Tnx and Tnl occur together in the cytoplasm of Prokaryotes and Eukaryotes.
D. Tnx and Tnl both occur in the nucleus in eukaryotes and prokaryotes.
Answer:
A and B
Explanation:
The correct statements about transcription and translation would be that prokaryotes conduct transcription and translation together in the same cellular compartment and eukaryotes do transcription in the nucleus and translation in the cytoplasm.
Prokaryotes generally lack a nucleus and other membrane-bound organelles and as such, their genetic materials lie freely within the cytoplasm. Hence, transcription and translation take place within the same cellular compartment, which is the cytoplasm.
Eukaryotes, however, have a nucleus and other membrane-bound organelles such as mitochondrion. Their genetic materials lie majorly in the nucleus. Hence, transcription takes place within the nucleus. Thereafter, the transcribed mRNA is transported to the cytoplasm where they get attached to ribosome and tRNA and translated into proteins.
The correct options are A and B.
Why is a flask wider on the bottom than on the top?
A woman with type A blood (whose father was type O) has children with a man that has type O blood. Both individuals are heterozygous for the MN antigen. Recall that MN blood group antigens are independent of the ABO locus, and that the alleles are codominant.
How would the results from Part A change if both parents are also heterozygous for the FUT1 gene controlling the synthesis of the H substance (Hh)?
Drag the correct value to the blank following each offspring type.
Type A with M antigen:_________.
Type A with M and N antigens:_________.
Type A with N antigen:__________.
Type O with M antigen:__________.
Type O with M and N antigens:__________.
Type O with antigen:_________.
Options: 0, 1/32, 3/32, 5/32, 6/32, 10/32, 1
Answer:
Explanation:
A woman with type A blood (whose father was type O) meaning her genotype is AO mates with
Man that has type O blood (OO genotype)
Both are heterozygous for MN blood group and both also heterozygous for the FUT1 gene controlling the synthesis of the H substance (Hh)- which determines the expression of the A and B antigen.
Cross
A O M N H h
O AO OO M MM MN H HH Hh
O AO OO N MN NN h Hh hh
Type A- 1/2 O-1/2 type M- 1/4 MN-1/2 N- 1/4, type H- 3/4 h-1/4
Type A with M antigen:
1/2*1/4*3/4 = 3/32
Type A with M and N antigens:
1/2*1/2*3/4 = 3/16
Type A with N antigen:
1/2*1/4*3/4 = 3/32
Type O with M antigen:
1/2*1/4*3/4= 3/32
Type O with M and N antigens:
1/2*1/2*3/4 = 3/16
Type O with N antigen:
1/2*1/4*3/4 = 3/32.
The 3/4 value comes from the expression of Hh-3/4 (this determines if the A and B Angie will be expressed).
Many types of cancer are known to overexpress the receptor protein tyrosine kinase. Which molecular technique can be used to reduce expression of tyrosine kinase in cell culture?
Answer:
By phosphorylation or by activating cyclin-dependent kinase-mediated signaling pathways
Explanation:
The Cyclin-Dependent Kinases (Cdks) are a family of critical regulatory proteins capable of modulating the progression through the cell cycle. Cdks are in turn regulated by binding to cyclin proteins or by phosphorylation at specific amino acid residues (generally tyrosine and threonine).
Phosphorylation is the most widely studied posttranslational modification and it is known to inhibit (and also activate) protein function, while cyclin-dependent kinases are proteins known to inhibit the activity of Cdks and thereby acting as tumor suppressors by inducing cell death-apoptosis.
what is a spinal cord
Answer:
The spinal cord is a long, thin, tubular structure.
Explanation:
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.
Answer:
it is a tissue
Explanation:
What do eukaryotic cells have that prokaryotic cells do not?
BEFORE equilibrium has been reached in this container: (Circle a letter for each) 1. Movement of glucose across the membrane in this container can best be described as A. Solution A to Solution B B. Solution B to Solution A C. both directions D. neither direction
Hello. You forgot to put the image so that this question can be answered, but I will describe what the image shows.
The image shows two types of "cups" that have a type of connection between the two. In cup A there is 1 mole of glucose and 1 mole of fructose. In cup B there is 0.1 mol of glucose and 1.5 mol of fructose.
Answer:
A. Solution A to Solution B
Explanation:
Balance is achieved when the "cup" with the lowest concentration of glucose receives glucose from the "cup" with the highest concentration, to the point that the two glasses establish equal concentrations of glucose between them.
We know that cup B has a lower concentration of glucose, which indicates that the movement of this solute was from cup A towards cup B. With this we can conclude that the letter A is the correct answer.
given a container of a solution of 5% hcl all samples tested from this same bottle will have the same mass ratio of hydrogen to chlorine. this application of the law of
Answer:
The law of conservation of mass.
Explanation:
This law talks about that the mass is not lost during the reactions, but is maintained.
Answer:
ITS NOT CONVERSATION OF MASS. ITS CONSTANT COMPOSITION
Explanation:
Draw a carbon monoxide molecular
Answer:
C==O
Explanation:
Consider a gene with three alleles controlling coloration of a flowering plant. There are 3 possible phenotypes, corresponding to the following dominance hierarchy among the alleles: A1 is dominant to A2 and A3, and A2 is dominant to A3. Which of the following genotype pairs express the same phenotype?
A.
A2A2, A3A3
B.
A1A1, A3A3
C.
A1A2, A1A3
D.
A2A3, A1A3
Answer:
C. A1A2, A1A3
Explanation:
This question depicts a gene coding for coloration in a flowering plant. The gene is controlled by multiple alleles, three specifically. The alleles are labelled A1, A2, and A3, with each coding for it's own respective trait.
According to the question, A1 is dominant over A2 and A3 i.e. A1 will always mask the phenotypic expression of A2 and A3 and express itself. Also, A2 is dominant over A3 i.e. A2 will always mask the phenotypic expression of A3. This overall means that the trait encoded by allele A3 will only be expressed when the same alleles are present.
To the question; since A1 is dominant over the other two alleles (A2 and A3), it will be phenotypically expressed ahead of them in a heterozygous state with both alleles. That is, A1A2 genotype will give rise to a phenotype encoded by A1. Also, A1A3 will produce a phenotype encoded by A1. Hence, genotypes A1A2 and A1A3 will express the same phenotypes.
A2A2 and A3A3 will express different phenotypes since they are both in a same alleles condition. Likewise for A1A1 and A3A3. A2A3 and A1A3 genotypes will express different phenotypes encoded by A2 and A1 respectively since they are both dominant over A3.
Which group of algae is the most closely related to vascular plant, what scientific evidence can be used to support your answer
Answer:
Explanation:
The green algae lineages hypothesized to be most closely related to land plants include: Coleochaetophyceae (coleochaetes). Charophyceae (stoneworts).well lack of vascular tissue—specialized groups of cells that conduct of water or dissolved nutrients throughout the plants body.(i guess this the scientific evidenxe if not comment ill provide more information)
hope it helps
If an isolated population’s birthrate is the same year after year, why are a greater number of individuals added to the population in each successive year?
A) The effective birthrate is increasing each year.
B) The carrying capacity is increasing each year.
C) The rate applies to more individuals each year.
D) Fewer members emigrate away each year.
Answer:
C) The rate applies to more individuals each year.
Explanation:
Suppose the initial population was 200 people and birth rate was 10% of that. So thats 0.10 * 200= 20 babies that year.
Next year the population is 200+ 20 = 220 people. Now if the birth rate is still 10% then you will have 0.10 * 220 = 22 babies that year.
Did you see that? The number of babies increased by 22-20= 2 extra babies each year.
Therefore, since rate applies to more individuals each year, you'll get increase in population
In garden peas, the allele for tall plants (T) is dominant over the allele for dwarf plants (t). A true-breeding tall plant is bred with a true-breeding dwarf plant to produce heterozygous tall plants. The F1 heterozygotes then self-fertilize to yield F2 offspring. Complete the Punnett square for this monohybrid cross using the F1 gametes with the appropriate genotype and placing the correct F2 genotype/phenotype combination in the Punnett square.Male gamete TT Tall Tt Tall Female gamete Tt Tall tt Dwarf For each of the following. determine the probability that a child will be affected with the given condition.Consider the following genotypes and phenotypes:BB, Bb, yellow(normal) urinebb, beeturia(red urine after eating beets)HH, Hh, colored eyelidshh, normal eyelidsEE, Ee, brachydactyla(short fingers)ee, normal fingers1. If a man and woman both have a genotype Ee, then what is the probability that their child wii have normal fingers?2, If a man has a normal urine and genotype Bb and woman has beeturia and genotype bb what is the probability that the child will have beeturia fingers?3. What is the probability that their child will have colored eyelids?4. What is the probability that their child will have colored and beeturia eyelids?
Answer:
Explanation:
TT ×tt
I
Tt Tt Tt Tt
Where Tt Tt Tt TT are the genotype for the first filial generation.
To generate the 2nd filial generation, we self the 1st generation.
Tt × Tt
I
TT Tt Tt tt
We have TT Tt Tt tt as the second filial generation.
If a man and a woman both have Ee the probability that the child will have normal finger is 1/4
Ee × Ee
I
EE Ee Ee ee
Where EE, Ee is brachydactly and ee is normal finger.
When a man with normal eye is crossed with a man with beeturia the probability of having a child with beeturia 2/4
Bb × bb
I
Bb bb Bb bb
Where BB Bb is normal eye and bb is beeturia
When a man with colored eye lid HH is crossed with normal eyes lid hh the probability of having a child with color eyes lid is 1
HH × hh
I
Hh Hh Hh Hh
Where Hh represent normal eyes lid
25
The basic unit of life is a(n)
Answer:
Air, water life without these is nothing
Answer:
A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms
Explanation:
Each trait of a plant is determined by _____.
A) an allele
B) one gene
C) a pair of genes
D) one dominant gene
Answer:
c. a pair of genes
Explanation:
Answer:
C) a pair of genes
Explanation:
C should be correct because each trait is controlled my multiple genes. It is very rare to see one thing being controlled strictly by one gene, rather multiple things work together to produce the traits. Living things are very amazing if you dive deep into their DNA level,
The speckled chicken on the right results from a cross between a black and white chicken. Explain what type of inheritance this would be, and draw a punnett square to show how this would happen.
Answer:
- Codominance
- 100% speckled chicken
Explanation:
This gene inheritance is called codominance, where both alleles can be expressed. In these cases, heterozygote individuals instead of showing an intermediate phenotype, express both alleles. Their phenotype is an additive expression of their parents' genes.
When two individuals, homozygous for a certain trait, are crossed they produce heterozygous individuals that express both alleles equally.
A typical example of codominance is the case of speckled chicken, the product of the cross of a black individual with a white individual. Black chickens (BB) only have this gene for feather color, while white chickens (WW) only have the gene for white feathers. When they cross, their progeny will have both genes (BW), and both of them will be expressed as speckled feathers.
Cross:
Parental) BB x WW
Black White
Gametes) B B W W
Punnet square) B B
W BW BW
W BW BW
F1) 100% BW, speckled individuals.
greater temperature fluctuations occur where
Which is a function of nucleic acids? create movement provide structure store genetic information fight disease
Answer:
store genetic information
Storage of genetic information is the main function of nucleic acids. As the nucleic acid contains genes that codes for certain characters of the humans that are being inherited from parents to offspring. The correct option is C.
What are nucleic acids?Nucleic acids are chemical compounds that arise innately and are the primary information-carrying substances in cells.
They are extremely significant in guiding protein synthesis. Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are indeed the two primary kinds of nucleic acids.
There are many organisms that contains RNA as a genetic material, and some have DNA as genetic material.
Nucleic acids play an important role in the stockpiling and expression of genomic information. DNA, or deoxyribonucleic acid, encodes the information that cells require to produce proteins.
Thus, the correct option is C.
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If the Hemoccult test result is negative, no further testing is done. If the Hemoccult test result is positive, the individual will have a second stool sample tested with the Hemoccult II test. If this second sample also tests positive for blood, the individual will be referred for more extensive evaluation. What is the effect on net sensitivity and net specificity of this method of screening
Answer:
Hemoccult test sensitivity is 89.3% and specificity is 92.7%
Explanation:
Hemoccult test is a test that is carried out in order to find out the presence of occult blood in your stool. This method is used to detect colorectal cancer in your body. Blue color of the blood indicate that the test is positive while the green color represents that the test is negative. Test sensitivity is the ability of a test which identify the person who is affected with the disease i. e. true positive, whereas test specificity is the ability of the test to correctly identify the patient without the disease. The value of sensitivity of the Hemoccult test is 89.3% the specificity is 92.7%, and the positive predictive value is 2.5%.
What is the approximate carrying capacity of the
population?
In which year, did the population reach the
carrying capacity?
About how many years did it stay at carrying
capacity?
Answer:
250 individuals
year 3
4 years
Explanation:
Answer:250
year 3
4 years
Explanation:
Which factors affect the rate of photosynthesis select all that apply
Answer:
Limiting factors such as
Effect of temperature
Effect of light intensity
Concentration of carbon dioxide
These all factors can affect the rate of photosynthesis
Explanation:
I hope it will help you
Answer:
light intestity
rate of oxygen
carbon4oxide concentration
temperature
45-year-old was admitted with sarcoidosis of both lungs. An extracorporeal perfusion of donor lungs, from an unrelated donor, and successful bilateral lung transplantation were completed without any complications. What is the second code you should assign
Answer:
The second code in this case is the procedure for perfusion
Explanation:
Extracorporeal perfusion is the process of diverting the patient's blood via an artificial circulatory device to enable the gas exchange (oxygen absorbed, carbon dioxide removed) to take place. Only medical experts should handle this procedure so as to avoid any and all undesired scenarios or negligence towards patient care.
In an accident with farm machinery, Mr. Roque had his left arm severed just below the elbow. Mrs. Roque stopped the bleeding, called for an ambulance, and packed the severed arm in ice for the EMTs to take to the hospital. Will Mr. Roque ever be able to move the fingers of his left hand again? What structures must be reattached, and what has to happen?
Answer:
The mentioned case of arm severing is considered as major surgery, and the restructuring of the severed arm is only possible when Mr. Roque will reach the hospital within four to five hours of the incident, also known as the window period.
After performing the surgery, Mr. Roque may regain movement in the arm to some extent after performing certain kinds of exercises, however, he may not feel the sensations in the fingers of his left hand again. The entire process of healing of the severity may take about two to three years, and in certain cases, the body fails to heal completely, and the affected limb may lose its function entirely.
In the given case, the structures that are required to get reattached are the muscles of the forearm and the blood vessels and the nerve supply to the affected region. The systematic arrangement of these structures is done with the help of surgery. However, after the surgery, the patient is recommended to perform certain kinds of hand and finger muscle exercises so that the functioning of the arm get regain slowly and gradually.
there are more hydrogen atoms in living organisms than any other atoms are asking is more abundant in the terms Mass why is this statement true
Answer:
The statement is true because most organisms are made of water, and water consists of mostly hydrogen (atoms) since its chemical formula is H2O.
Match Microscope Components to the Scientists listed below.
Microscope Components:
a. Condenser
b. Side Pillar or Arm
c. Stage Adjustment Knobs
Scientists:
1. Louis Joblot
2. Anton van Leeuwenhoek
3. Robert Hooke
Answer:
Anton van Leeuwenhoek discover stage adjustment knob.
Robert Hooke discover condenser.
Louis Joblot discover side pillar or arm.
Explanation:
Anton van Leeuwenhoek was a scientist that lived from 1632 to 1732 that observed microorganisms using microscope. He used single lensed design microscope fo his experiments. He developed the adjustment knob that magnified over 200 times with brighter and clearer images.
Robert Hooke was a scientist born in 1635 and developed a microscope. He used biconvex lens, additional lens, eyepiece lens and tube lens.
Louis Joblot was a scientist who lived from 1645 to 1723. He was often neglected in history and his inventions were not recognised and acknowledged. He was the first to recognised and identified microbes. He developed a new modifications of microscope. Joblot’s new microscope permitted precise focusing by removing stray light and enabling the mounting of a diverse array of specimens. Joblot constructed a side pillar microscope that use diaphragm to correct aberrations.
dependent and independent variable hi guys please help me i want an example of indepent and depent variable for ech variable example Note : please in science not in math in science Gratefully , Brainly Sthay home and keep safe
Answer:
The quantities between which a graph is plotted are called variables.The independent variables are those which do not depend on other quanitity for example time.The dependents variables are those which depend on other quantity for example velocity,acceleration,speed,momentum etc.
Answer:
It is B,D,E
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What is the shape of an Acid-fast bacteria?
Why are enzymes important to cells? Why does an egg change color and texture when heated?