Answer:
e. bind to troponin which moves the tropomyosin.
Explanation:
Troponin (Tn) is a protein complex composed of three different proteins: troponin C (TnC), troponin I (TnI), and troponin T (TnT). This complex is found both in skeletal muscles and cardiac muscles, where TnC attaches calcium ions through four and three calcium ion-binding sites, respectively. When a muscle is relaxed, Tn attaches to tropomyosin to prevent muscle contraction. During muscle contraction, calcium channels open and cytosolic calcium ions bind to TnC, thereby Tn changes its conformation and moves the tropomyosin. This process relieves the inhibition of the interaction between actin and myosin filaments, which makes muscle contraction possible.
3. How do nutrients and other materials move in fungi?
Answer:
Nutrients and other materials from the environment are absorbed through mycelia. The branching mycelia have a high surface-area-to-volume ratio which allows the absorption of nutrients to be more efficient. Fungi may even digest nutrients by releasing enzymes into the environment.
Explanation:
I have a strange feeling that this isn't the answer you were looking for.
Answer !!!! I will give you 20 points
Answer:
its a cladogram :D
Explanation:
Answer:
it D
Explanation:
A population of insects became divided when a flood created a lake in the middle of the original population. After many generations, the divided populations differ from each other in several traits such as wing color. Which process likely occurred
Answer:
the process is called allopatric speciation
Explanation:
when two organism separate each other by a geographical barrier or gepgraphical separation (because of flood) it is likely that the two organisms will evolve another certain characteristics.
CAN SOMEONE HELP ME I DONT UNDERSTAND HOW TO FILL IN THE PUNNET SQUARE
Answer:
if the males alleles are Rr 25% reccesive, 50% heterozygous and 25% dominant.
if the males alleles are RR Then its 100% Rr heterozygous
How does the ocean affect climate on land?
Answer:
1.due to land breeze and sea breeze
2.area near the ocean has mild climate
A man and a woman have 24 children. Of the children, 17 have brown
eyes and 7 of the children have blue eyes. What are the most likely genotypes of the parents?
Answer:
Possible genotypes of parents:
Bb and Bb
OR
Bb and bb
Explanation:
Note:
B (dominant) - brown
b (recessive) - blue
1. What is structure A?
2. During which numbered step(s) (#1-6) is a restriction enzyme used?
3. Which structure (A, B or C) shows recombinant DNA?
4. Which structure (A, B, C, D) shows a transgenic organism?
Answer:
l
Explanation:
Structure A is a plasmid. A restriction enzyme is used in step 4. Structure C shows recombinant DNA. Structure D shows a transgenic organism.
What is DNA recombination?DNA fragments are broken and recombined during the recombination process to create novel allele combinations. The genetic diversity that results from this recombination process at the gene level reflects variations in the DNA sequences of various organisms.
Recombination happens when two DNA molecules trade genetic material with one another. When homologous chromosomes align in pairs and exchange DNA segments during prophase I of meiosis, one of the most notable instances of recombination occurs.
Therefore, the correct options are
a plasmid. step 4.Structure C.structure D.To learn more about DNA recombination, refer to the below link:
https://brainly.com/question/1674414
#SPJ2
Which statement is most accurate about alternation of generations?
It involves changing the total number of chromosomes in a plant cell.
It refers to the haploid and diploid phases of the plant life cycle.
It refers to the processes of meiosis and fertilization.
It involves only some of the seedless vascular plants.
Answer:
It involves alternating haploid and diploid phases. alternation of generations is the term that is used to the life cycle that happens in plants and algae.
Explanation:
Answer:
B.It refers to the haploid and diploid phases of the plant life cycle.
Explanation:
HELP ME PLEASE SOMEONE :(
Answer:
D
Explanation:
The other person is right, pls give them brainliest pls?
What it's called when scientists explore the world around them
Answer:
1. Observe
2. Research
3. Geology
Explanation:
Hope this helped!
Answer
A. Making observations
Explanation:
All of these ___ help to block, trap or flush pathogens out of the body.
What are the following 6-
A-e???
Answer:
natural barriers
Explanation:
skin, mucous membrane, tears, earwax, muscus, stomach acid
(Q001) In Lab 2, Exercise 8, you determined the amino acid sequence for the following strand of DNA: A G C A A T C C G T C T T G G T C G T T A G G C A G A A C C That strand has mutated. It is now A G C A A C C C G T C T T G G T C G T T G G G C A G A A C C Use your knowledge of mutation and protein synthesis to answer the following questions. What mutation has occurred
The mutation that has occurred is substitution mutation.
Mutation is defined as the random changes in deoxyribonucleic acid (DNA) that alter genetic information, and so can introduce new characteristics.
Mutation can occur in because of the following reasons stated below:
When exposed to environment saturated with ultraviolet light, it can cause cell mutation; andWhen exposed to certain chemical such as free radicals.A typical example of mutation that occurs in DNA is the substitution mutation.
Protein synthesis is the process used by cells to produce usable specific proteins as directed by the DNA.
The base sequence in DNA determines the sequence of amino acid in peptide.
Substitution mutation occurs when one base is incorrectly replaced in the complementary strand of a DNA.
From the DNA base sequence given,
Cytosine replaced Thymine; andGuanine replaced Adenine.This replacement that occurred will lead to abnormal protein synthesis.
Learn more here:
https://brainly.com/question/21388948
it would be nice if you could ples help me answer : Because endothermic animals must maintain a constant body temperature, they must
Question 8 options:
eat more often to have energy to keep a constant temperature.
become sluggish when it becomes to cold to conserve energy.
move to sunlight to warm, and shade to cool.
constantly move around to keep their bodies warm.
What is the relationship between tissues and organs?
Tissues are made from a single, functional type of organ.
Organs are made from a single, functional type of tissue.
Organs are made from tissues with a similar structure and function.
Tissues are made from organs with a similar structure and function.
Answer: Organs are made from a single, functional type of tissue.
Explanation:
if I'm wrong I'm sorry I tried.
which structure stores energy for the in the form of ATP?
A) lysome
B) mitochondrion
C)endoplasmic reticulum
D)golgi apparatus
Answer:
Mitochondria
Explanation:
ATP is how cells store energy. These storage molecules are produced in the mitochondria
I need help with this
Answer:
It is b. thermal
Explanation:
Paleoclimatic analysis has generated a claim that there is a possible correlation between an extinction event around 29 million years ago that allowed grasslands to become abundant and the adaptive radiation of several groups of butterflies.
Which of the following proposes the best alternative hypothesis for the claim?
A- Climate analysis conducted by sampling pollen preserved in amber shows an increase in grass pollen 29 million years ago, but there is no significant difference between speciation rate, as well as species richness with regard to butterflies, before and after 29 million years ago.
B- Climate analysis conducted by sampling pollen preserved in amber shows an increase in grass pollen 29 million years ago, which indicates there was an increase in grasslands that correlates to an increase in butterfly speciation during the same time period.
C- There is a correlation between the rapid and wide-ranging decrease in species richness of insects in general 29 million years ago and the increase in species richness and diversity among the butterfly population during the same time period.
D- Evidence of rapid speciation among butterfly species 29 million years ago is evenly distributed among all environments of that period.
How would this diagram be
different if it showed anaphase I of meiosis instead of anaphase of mitosis?
A Each chromosome would still have two chromatids.
B The chromosomes would look the same as in mitosis.
C You would be able to see DNA in the chromosomes during meiosis.
D Homologous chromosomes would be moving to the same end of the cell
Answer:
This question is incomplete as there is no diagram, however, the question can still be answered without it. the answer is as follows:
A. Each chromosome would still have two chromatids.
Explanation:
The ANAPHASE stage of both mitotic and meiotic division is the stage where chromosomes are pulled apart into opposite poles of the cell. However, meiosis occurs in a two-step division tagged meiosis I and meiosis II.
In mitosis, sister chromatids of a chromosome are separated during anaphase, but in meiosis I, homologous chromosomes are pulled apart during anaphase I. This means that in the anaphase I of meiosis as opposed to anaphase of mitosis, each separated chromosome WOULD STILL HAVE TWO CHROMATIDS.
please help asap and I’ll give brainiest!
Answer:
I think so A is the answer
Explanation:
changes in Geology over Time ... relative age – a rock layer's age compared to other rock layers ... Fossils give clues on how Earth may ... weather. ▫This helps us to infer that West. Virginia and Pennsylvania were both ... in the area. ... Many fish. Silurian 438 to 408 mya. First insects, vascular plants on land.
i hope my answer is correct and would help a little bit.
Which of the following does NOT affects the type of severe weather a location gets? *
latitude
normal weather patterns
high pressure
geography
Answer:
high pressure
I think it is option C
hope it helps
What is one of the causes of daily variations in temperature on a planet's surface?
OA.
the speed of a planet's rotation
OB.
the rotation of a planet's moons
O C.
the time it takes for a revolution around the sun
OD.
the tidal force on the oceans
Answer:
D
Explanation:
i am sorry if this is wrong
Answer:
A. the speed of a planet's rotation
Explanation:
The students decide to model how the motion of two plates occurs. Which statement best describes the ability of the model to predictyplate movement? A The motion of the plates cannot be modeled on a scale that is much smaller than the plates themselves. B The motion of the plates cannot be modeled by simplifying the factors that contribute to plate movement. C The motion of the plates can be modeled by including only the main factors that contribute to plate movement. D The motion of the plates can be modeled only by including every factor that contributes to plate movement.
Explanation:
In my view, all factors are equally responsible for this.
Which of the following correctly describes a cell that is haploid. There is more then one correct answer.
A cell with a single set of chromosomes
Includes zygotes
In humans contains 46 chromosomes
In humans contains 23 chromosomes
All cells except gametes
Includes gametes
A cell with two sets of chromosomes
Explanation:
a cell with a single set of chromosomes
in humans contain 23 chromosomes
includes gametes
SOMEONE HELP ME WITH THIS ASAP DO AP 3:00PM
Why do these sisters have different traits? Use these words in your response (protein, molecule, structure, trait, variation) describing what would determine these traits at the molecular scale.
Answer:
[Protein, Molecule, Structure, Trait, Variation]
Each offspring receives two copies or variations of each gene, one from their mother and one from their father. Each offspring can inherit a different combination of gene versions, so siblings can have different traits from each other and from their parents. The girl on the right has straight hair, whereas the girl on her left, has curlier hair. A gene code for a specific protein that's involved in a traits expression. In the structure of a cell, the proteins do much of the chemical work inside the cell, so they largely determine the traits and whose they are. Another thing to remember is genes are also made up of molecules. Thin strands twisted around each other like a spiral staircase.
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Try to use the information I provided above...
GL.
The differences that occur at the molecular level or in the genes, will result in changes in the proteins which the genes code for bringing about variation in traits.
What is variation?Variation refers to the changes that occur between individuals of the same species due to environmental or genetic factors.
The basis for variation is differences that occur at the molecular level.
The genes are regions of the DNA which code for a particular trait.
The DNA is composed of chains of polynucleotide molecules.
When differences occur at the molecular level or in the genes, the proteins which the genes code for will have differences in structure.
Thus, the individuals will show variation as in the case of the two sisters who show variation in height and hair structure.
Learn more about genetic variation at: https://brainly.com/question/26481357
write 5 major facts in complete sentences about pedigrees
what happen to LH and FSH during ovulatory phase???
Answer:
LH and FSH also trigger an increase in the production of the female hormone estrogen .as estrogen rise,like a switch, it turns offthe production of follicle stimulating hormone.
What does it mean to be impartial?
O A. To be unbiased
OB. To be strong
O c. To be useful
D. To be smart
Answer:
i think A
Explanation:
Which of the following is true about the color of a substance?
1. it is the only information needed to identify a substance
2. it helps to identify a substance but by itself is not a significant indicator of what the substance is
3.it is a chemical property of a substance
4.it never changes
Answer:
1
Explanation:
It identifies the substance.eg a milk is a creamy liquid substance so the creamy color make us identify the milk
In horses, a black coat is dominant over a brown coat. Both parents are heterozygous.
What is the probability that their offspring will have a BLACK coat?
What is the probability that their offspring will have a BROWN coat?
Similarities between tridax plant and elephant grass
Answer:
ok so basically they just