Muscle tissues are made of specialized unitss called?

Answers

Answer 1

Answer:

Each skeletal muscle fiber consists of a bundle of myofibrils, which are bundles of protein filaments. The filaments are arranged in repeating units called sarcomeres, which are the basic functional units of skeletal muscles.

Explanation:

Answer 2

Answer:

skeletal muscle

Explanation:


Related Questions

how and why does DNA change during meiosis

Answers

Answer:

When recombination occurs during meiosis, the cell's homologous chromosomes line up extremely close to one another. Then, the DNA strand within each chromosome breaks in the exact same location, leaving two free ends. Each end then crosses over into the other chromosome and forms a connection called a chiasma.

Explanation:

How old would this fossil be if only 1/128 of C-14 was detected in it?

Answers

Answer:

not sure but mark that guy brailest ^

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what is the activities of life that occur the cellular level​

Answers

Answer:

all the digestive activities of life (respiration , digestion, excretion, etc) occur at the cellular level.

Explanation:

-Eijiro <3

pulled upwards in the trunk of a tall tree Ichestue
S. Give three reasons to explain why transpiration occurs mainly through leaves
6. Explain how sunken stomata lower the rate of transpiration
11
with
ftri​

Answers

Answer:

Due to stomata.

Explanation:

Transpiration occurs mainly through leaves because of the presence of stomata n the lower side of the leaves. Transpiration refers to the loss of water from the body of plants so leaves has small pores which is used by the plant to regulate internal temperature.  Sunken stomata lower the rate of transpiration because it is not directly exposed to the surface which protects the escaping water vapor due to air.

Which of the following scientists discoverell that in DNA there is the same amount of 1 point
adenine as thymine and the same amount of guanine as cytosine?

Answers

Answer:Erwin Chargaff

Explanation:

why is the structure of dna important to its function

Answers

Answer:

The function of DNA is tied to its structure. ... The sugars and phosphates link the nucleotides together to form each strand of DNA. When two strands of DNA come together, base pairs form between the nucleotides of each strand. Nitrogenous bases pair together in the following way: A-T and C-G.

What is the argument against taking persistent vegetative state patients off of life support?

Answers

Answer:

An argument could be that there have been many instances where people on life support or in a vegatative state have 'woken' up and gotten better after many years. So, taking someone off life saving machines could be taking away their chance of getting better and their chance of surviving. Since the person is not dead, some may even see it as murder.

Explanation:

umm I tried <3

2. Which part of the nucleotide encodes (holds) the genetic information?
(highlight correct answer)
A. Sugar
B. Phosphate
C. Base
D. Sugar-phosphate backbone

Answers

Answer:

C. Base

Explanation:

The bases for DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). The certain sequence gives certain genetic information.

Why aren't there many large carnivores?

Answers

Answer:

Technically, the largest ever marine predator known thus far - the blue whale - is, for now, alive and well, but I know what you mean. You’re not talking about filter-feeders, or fish-eaters, you mean macropredators.

The last truly enormous macropredator in our oceans was probably Carcharocles megalodon, which went extinct about 3.6 million years ago. Other recent examples include the terrifying sperm whale Livyatan melvillei (which disappeared 8.9 mya) and other megatoothed sharks like C. chubutensis.

So, why did the giants go away? The answer, in truth, is likely multi-faceted. Here are some major promising hypotheses, or at least contributing factors:

Whales have declined. Giant sea carnivores like C. megalodon and Livyatan relied on marine mammals - specifically baleen whales. During the Pliocene, the Americas connected and the Central American Seaway was closed. This seems to have triggered a significant decline in the diversity of tropical whales, and would thus limit food availability for huge, energy-hungry predators.

Things got too cold. The extinction of megalodon and other giant ocean predators roughly coincides with the trend of decreasing temperatures the Pliocene brought. Giant sharks in particular, not being fully warm-blooded, would suffer from this, and it would also mean a decline in food supply. You can even see a sudden cold snap just about when Carcharocles went extinct, 3.6 mya.

Smaller predators outcompeted them. The niche of Carcharocles and the macroraptorial sperm whales is arguably still filled today - by the killer whale. Many orca pods specialize in hunting whales or other marine mammals. However, killer whales and their ancestors were perhaps more opportunistic, fast, intelligent and indeed adaptable than the massive, solitary hunters.

Ironically, the largest ever marine predator owes its existence to the demise of the largest ever marine macropredators. Since the extinction of macroraptorial sperm whales and Carcharocles megalodon, baleen whales have been gradually increasing in size, for they no longer need to be as fast and agile. Because of this, we have the privilege of sharing our world with the largest animal known to have ever lived - the blue whale.

Key Concept Name the
main events of the cell cycle.

Answers

Interphase, prophase, metaphase, anaphase and telophase.

Help please !!!!!! Need the answer asap

Answers

Answer:

i think the answer is c

Explanation:

The original source of the matter in food

Answers

Answer:

I think your asking what is the original source of the matter in food

Explanation:

if so The Sun is the major source of energy for organisms and the ecosystems of which they are a part. 

Which of the following is carried out by vesicles?
O Synthesizing proteins
O Facilitated diffusion
Breaking down substances within the cell
Organizing organelles prior to division

Answers

Answer:

breaking down substances within the cell

Explanation:

there are many different types of vesicles, Peroxisomes and lysosomes are both types that break down substances in the cell

The correct statement about vesicles is "Breaking down substances within the cell"

Vesicles are an organelle isolated from the cytoplasm by a membrane-like lipid layer.

Its function is to store, move and process products and cellular waste.

Endocytosis and exocytosis transports are characterized by the fact that the substances move through vesicles.

The vesicles incorporate substances (endocytosis) and through degradation, they expel large particles that cannot cross the plasma membrane, this mechanism is exocytosis.

Therefore, we can conclude that the cell incorporates, inside the vesicle, particles from the extracellular environment and also through the vesicles it releases degradation products to the extracellular environment.

Learn more about the vesicles here: https://brainly.com/question/11131709

Detection of a light is
coming from a car is
and interpreting the light as
Select one:
a. Sensation perception
b. Consciousness: unconsciousness
e Bods: cons
O d. Energy: gestalt​

Answers

Answer: d

Explanation:

Raccoons feed on dead animals. Thus, they are decomposer animals known as?

Answers

Answer:

SCAVANGER

Explanation:

Answer:

Raccoons are scavengers

A raccoon is not a decomposer but is an omnivore and scavenger. Raccoons will eat just about anything, including a wide variety of plants

Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.

Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?

A. The steel wool should be burned inside of a sealed jar or other closed system.

B. The steel wool should be burned over a long period of time (at least two hours).

C. The steel wool should be burned in a room that is at room temperature (20–25°C).

D. The steel wool should be burned in its entirety so that no iron is left in its original state.

Answers

Answer:

1) Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.

Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?

A.

The steel wool should be burned inside of a sealed jar or other closed system.

Explanation:

The explanation for number 1 is in the link below and the answer is provided also:

https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020

HELP URGENT!!!!!!!!!!!​

Answers

Answer:

dominant trait

Explanation:

Recessive alleles can only show up when there is no dominant allele present to suppress them.

Answer: Dominant traits

Explanation:

Recessive traits only show up when there are no dominant alleles

Extraterrestrial traits are not a thing

Clara, while vacationing in Italy, decided to go swimming. When she asked at what temperature the pool was kept, she was told that it had a constant temperature of 35.8°C. What temperature is the pool in °F, to the nearest tenth?
a.
53.6°F
b.
96.4°F
c.
122.0°F
d.
129.1°F

Answers

Answer:

96.4

Explanation:

The answer is at the top

When she asked at what temperature the pool was kept, she was told that it had a constant temperature of 35.8°C. The temperature is the pool in °F, to the nearest tenth is 96.4°F. Therefore, option (B) is correct.

The average kinetic energy of all of a substance's particles is used to measure temperature. The average kinetic energy of a substance rises with the speed at which its particles move, increasing its temperature and making it feel warmer.

One of the seven SI base units is the kelvin, which is the thermodynamic temperature unit. Curiously in the SI, we additionally characterize one more unit of constant temperature, called the degree Celsius (°C).

Learn more about temperature:

https://brainly.com/question/11464844

#SPJ7

Writing Assignment So, you have learned about how the denaturation of proteins works during lecture, and you have seen examples in these videos. Now you will write a 2-3 page discussion of protein denaturation putting all that together Make sure you cover both the academic side (lecture knowledge) and practical side (what is done and observed in the lab). Make sure the answers to the following questions are contained in your report. Do NOT just answer them separately, but rather incorporate them seamlessly in your writing. This is a very broad topic, so comprehensive coverage is hardly expected, but you should demonstrate a good beginner's understanding. As usual, reference any and all resources you use.
a. What are the various levels of organization that any protein structure may have that gives it its 3-dimentional shape?Which of these changes during denaturation?
b. For each change made to a protein solution that you have seen or read about how might it affect the interactions that are involved in a protein's shape?
c. What is the difference between precipitation of a protein and its denaturation? How might you tell the difference?
d. If changing the pH of an enzyme solution greatly reduces the activity of that enzyme without precipitation, how could you tell in the lab if it were the result of denaturation or just going to a pH that is just not a good one for the enzyme? And how would a change in pH impact or even stop enzyme function without denaturation? (Consider the enzymes that are active in your stomach, such as pepsin-discussed in Wikipedia.)
e. For changes that precipitate a protein, are some more likely than others to be denaturation?
f. Etc. If you find one aspect of what you've see more interesting, go ahead and learn more and expand that section of your report and keep the other sections more basic.

Answers

Solution :

Denaturing may be defined as the process where the protein they lose their shape and their function because there is a change in the pH level or in the temperature. Although the amino acids sequence also known as primary structure, it does not change. But the shape of the protein might change a little bit so much that it can become dysfunctional in which protein is considered to be denatured.

The enzyme, Pepsin, the breakdown protein in our stomach only operates at a very low pH level. At higher pH level, the pepsin's configuration the way the polypeptide chain is being folded up in a 3 dimension begins to change. The pH level of the stomach is maintained at a low level to ensure that pepsin continues for the digest protein and that it does not denature.

There are 4 levels of the protein structure --- they are the primary, the secondary, the tertiary and the quaternary.

The primary protein is a particular sequence of amino acids in each of the polypeptide chain that makes the protein. The final protein structure depends on this sequence.

Secondary structure arise from the interactions between the neighboring or nearby the amino acids as polypeptide starts folding into 3D form.

The tertiary structure is the most important of structural levels in determining.

The quaternary structure also applies to the proteins made from more than one polypeptide chain.

You discovered symptoms start to appear on your cattle and its spreading, the symptoms are swollen, fever then death.
Suppose you are a veterinary Doctor, what will you do, what procedures you will apply to examine this disease.?

Answers

Answer:

f

Explanation:

What is the phenotype of the sons in generation III? How do you know? .

Answers

The phenotype of children in the third generation depends on the dominant or recessive parents traits of family in the past.

A piece of alien DNA cannot multiply itself in the progeny cells of the organism because:

a. It has no the sequence called Origin of replication (ori) needed for starting replication.

b. A piece of DNA will be denatured and damaged soon as it has no stability.

c. A piece of DNA is easily unwound and the H bonds between nitrogen bases are broken.

d. Both A & B.​

Answers

I think the answer is A . It has no the

In what ways do humans affect the carbon cycle?

Answers

Burning fossil fuels, changing land use and using limestone to make concrete all affects carbon.
Human activities affect the carbon cycle through emissions of carbon dioxide (sources) and removal of carbon dioxide (sinks). The carbon cycle can be affected when carbon dioxide is either released into the atmosphere or removed from the atmosphere.

A) How do scientists use molecular clocks to study evolution?

B) Explain some assumptions and limitations of the molecular clock concept.

Answers

A) Molecular clocks help to measure the number of changes and mutations which accumulate in the gene sequence of different species over a period of time.


B)It is based on the fact that genetic mutations although random, occur at a relatively constant rate. Evolutionary biologists use this information to deduce how species evolve and determine when two species diverged on the evolutionary time line.
It is useful in the study of variations in selective forces.
It also facilitates establishing the dates of phylogenetic events including those not documented by fossils.
The molecular clock technique is an important tool in molecular systematics. It helps to determine the correct scientific classification of organisms by deriving information from molecular genetics.

Hope this helped :) please mark brainliest

Answer:

A) A molecular clock is a measure of evolutionary time based on the theory that specific DNA sequences mutate at constant rates. To use a molecular clock, scientists first select two different species and compare their DNA sequences. They can compare the DNA sequences directly, or by looking at the RNA and protein molecules created from the DNA. Molecular clocks help to measure the number of changes and mutations which accumulate in the gene sequence of different species over a period of time.

B) Molecular clocks assume the neutrality of gene mutation. They are based on the fact that genetic mutations although random, occur at a relatively constant rate. Evolutionary biologists use this information to deduce how species evolve and determine when two species diverged on the evolutionary time line. It is useful in the study of variations in selective forces, and also facilitates establishing the dates of phylogenetic events including those not documented by fossils. Molecular clocks do have some limitations. Rates of change may not be constant, may not be the same in all organisms, and may be different for different genes.

I used the answer above and added some stuff here and there, so credit to them. I'm not sure if what I wrote makes much sense, but hopefully it can be somewhat helpful. :)

describe origin and evolution of early vertebrates​

Answers

vertebrates were re- stricted to the oceans, but about 365 million years ago, the evolution of limbs in one lineage of vertebrates set the stage for these vertebrates to colonize land. There they diversified into amphibians, reptiles (including birds), and mammals.

Explain how an abiotic factor (stronger storms, warmer oceans, or lower ocean pH) can affect populations in a coral reef ecosystem

Answers

Answer:

Climate change leads to: A warming ocean: causes thermal stress that contributes to coral bleaching and infectious disease.

Explanation:

Sea level rise: may lead to increases in sedimentation for reefs located near land-based sources of sediment. Sedimentation runoff can lead to the smothering of coral.

The process of meiosis is essential in the sexual reproduction and life cycle of many organisms. The outcome of meiosis is haploid gametes. Which statements correctly describe the importance of meiosis to the life cycle or these organisms?
A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.
B) Taking a diploid cell to its haploid state occurs during the first cell division of meiosis.
C) Checkpoints during meiosis ensures that chromosome separation occurs accurately, avoiding non-disjunction.
D) DNA synthesis occurs before each cell division in meiosis ensures that the integrity of the chromosomes is maintained.
E) Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization.

Answers

Answer:

E) Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization.

A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.

Explanation:

Meiosis is a kind of cell division that strictly occurs in sexually-reproducing organisms. It is the process whereby four daughter cells that are genetically different from their parents are produced. In meiosis, the chromosome number of each daughter cell (gamete) is reduced by half. As highlighted in this question, the meiotic process is essential in the sexual reproduction and life cycle of many organisms.

This importance is attributed to the fact that:

- Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization. That is, a diploid organism (2n) produces a haploid gamete (n), which becomes diploid again when fertilized by another gamete.

- Increasing genetic diversity ensures that no two haploid gametes are exactly the same. This occurs because of a process called CROSSING OVER, which enables that the alleles of each gamete is recombined to be different from one another in order to promote genetic diversity.

Answer:

A, B, C, E

Explanation:

i just did it

To approximate the actual concentration of enzymes in a bacterial cell, assume that the cell contains equal concentrations of 1,000 different enzymes in solution in the cytosol and that each protein has a molecular weight of 100,000. Assume also that the bacterial cell is a cylinder (diameter 1.0 m, height 2.0 m), that the cytosol (specific gravity 1.20) is 20% soluble protein by weight, and that the soluble protein consists entirely of enzymes. Calculate the average molar concentration of each enzyme in this hypothetical cell.

Answers

Answer:

2.4 × 10⁻⁶ M

Explanation:

Molar concentration = no of moles of solute (enzymes)/volume of solvent(cystosol)

Let V = volume of solvent = volume of cystosol = πd²h/4 where d = diameter of cell = 1.0 m and h = height of cell = 2.0 m

Concentration of enzymes, C = n/V where n = no of moles of enzymes

Also, n = m/M where m = mass of all enzymes and M = molecular weight of protein = 100,000

Note that the solvent for the enzymes is cystosol, since they are dissolved in it.

Density of cystosol,ρ = specific gravity of cystosol in g/cm³ = 1.20 g/cm³.

Now, ρ = m'/V where m = mass of cystosol and V = volume of cystosol

m' = ρV

m' = 1.20V

Given that 20 % of the cystosol is protein and all protein are enzymes, the mass of enzymes is thus m = 0.2m' = 0.2 × 1.20V = 0.24V

C = n/V

= m/MV

= 0.24V/100000V

= 2.4 × 10⁻⁶ mol/cm³

= 2.4 × 10⁻³ mol/dm³

= 2.4 × 10⁻³ M

This is the concentration of all the 1000 enzymes.

So, the concentration of one enzyme is 2.4 × 10⁻³/1000 M = 2.4 × 10⁻⁶ M

what enzyme helps digest lipids?

- lactase
- amylase
- cellulase
- lipase

Answers

Lipase helps digest lipids

Answer:

The answer is lipase  

Hope this help

Explanation:I did the test

What does the term "feedback inhibition” describe?

Answers

Answer:

Feedback inhibition, in enzymology, suppression of the activity of an enzyme, participating in a sequence of reactions by which a substance is synthesized, by a product of that sequence.

Other Questions
Which of the following would have a negative effect on your financial health?Paying your credit card bill in full each monthMaking all of your purchases using your credit cardOnly using your credit card for emergenciesMaking the minimum payment on your credit card bill each month PLEASE HELP!!!!A farmer is building a chicken coop/ She digs some hole for the support poles. The bottom of the first hole is -6 1/4 ft from ground level. The bottom of the second hole is 1/3 as far from ground level as the first hole.What is the position of the bottom of the second hole, relative to ground level?A. 18 3/4 ftB. 2 1/12 ftC. -2 1/12 ftB. -18 3/4 ft Draw a parallel line to line PQ, Start the line with point R What does it mean to say that a data point has a residual of 0?A. The point lies above the regression line.B. The point lies directly on the regression line.C. The predicted value for that point is 0.D. The point falls at the origin. A 0.242 g sample of potassium is heated in oxygen. The result is 0.292 g of a crystalline compound. What is the formula of this compound? A. KO3 B. KO2 C. KO D. K2O The price of the shirt is 40$ the sale. tax is 8% What is the total price for the shirt A. 36.80B. 33.20C. 48.00D 43.20 hi, if your looking for extra points (50+) and brainiest here is ur chance, answer this question correctly plz Find the gradient of the line segment between the points (8,6) and (10,12) How big is the planet Mars. PLEASE HELP MEEE THIS IS FOR a gradE AND IF I FAIL I FaIL THIS CLASs HELP ME Part A: List 3 traits that Leiningen has that indicate that he is competitive. Explain why. PLS SOMEONE HELP!! DUE TODAY Which phrase best describes due process?1a system used to make laws2a system used to ensure fair justice3a system used to conduct fair elections4a system used to amend the Constitution Giving brainliest!!Explain which method of production is the most likely to be capital intensive? Please select the word from the list that best fits the definition theorized plans moved in oval path around the sun PLEASE HELP ASAP! DO IN 5 MINUTES! WILL MARK BRAINLIEST! Given the equation x + 2y = 0, which equation will form a system of linear equations without a solution? Please help Allison is saving to buy a $500 bicycle by working duringsummer vacation, The job pays her $8 for every 1 hour worked. Allison works exactly 20 hours each week.If she works for 4 weeks and buys the bicycle, how muchmoney will she have left over? Please help i dont know if Im doing this right please urgent please beg help