Please answer somebody right now

Please Answer Somebody Right Now

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Answer 1

Answer: Muscle contraction occurs when the thin actin and thick myosin filaments slide past each other. It is generally assumed that this process is driven by cross-bridges which extend from the myosin filaments and cyclically interact with the actin filaments as ATP is hydrolysed.

Explanation: and this is what happens: The sliding of protein filaments is responsible for muscle contraction. When a motor neuron stimulates a muscle fiber, overlapping thick and thin filaments slide along one another and sarcomeres shorten. The combined shortening of many sarcomeres in many muscle fibers results in contraction of the whole muscle.


Related Questions

Please help ASAP will mark brainliest

5.2 Epithelial Tissues
1. Match the epithelial tissue to an organ in which the tissue
is found.
(1) simple squamous
epithelium
(2) simple cuboidal epithelium
(3) simple columnar
epithelium
(4) pseudostratified columnar
epithelium
(5) stratified squamous
epithelium
(6) stratified cuboidal
epithelium
(7) stratified columnar
epithelium
(8) transitional epithelium
(9) glandular epithelium
A lining of intestines
B lining of ducts of
mammary glands
C lining of urinary
bladder
D salivary glands
E air sacs of lungs
F respiratory
passages
G parts of male
urethra
H lining of kidney
tubules
I superficial layer of
skin

Answers

Answer:

(1) simple squamous

epithelium - lining of kidney

tubules

(2) simple cuboidal epithelium - A lining of intestines

(3) simple columnar

epithelium - parts of male

urethra

(4) pseudostratified columnar

epithelium - respiratory

passages

(5) stratified squamous

epithelium - superficial layer of

skin

(6) stratified cuboidal

epithelium salivary glands

(7) stratified columnar

epithelium - lining of ducts of

mammary glands

(8) transitional epithelium - lining of urinary

bladder

(9) glandular epithelium- E air sacs of lungs

Explanation:

The above mention cells are present in the lining of particular organs

A ________ is a rigid layer that surrounds a plant cell, providing structural support.

A.
nucleus
B.
cell membrane
C.
cell wall
D.
chloroplast

Answers

the answer is C. cell wall

Answer: C. Cell wall

The cell wall is a rigid layer that is found outside the cell membrane and surrounds the cell, providing structural support and protection. The central vacuole maintains turgor pressure against the cell wall.

Identify the key metabolic process for step I and the key metabolic process for step II and briefly explain how each process promotes the movement of carbon through the cycle. For each process, focus on the role of energy in the movement of carbon.

Answers

Answer:

The key metabolic process for step 1 is photosynthesis and the key metabolic process for step 2 is cell respiration. Step 1 promotes movement of the carbon cycle because the energy in is sunlight and for step 2 the energy out for cell respiration is heat.

Explain enzyme inhibition
(In basic terms because this is a biology 101 class)

Answers

A chemical that prevents an enzyme from working. Enzymes participate in a variety of cell processes, such as cell signaling, growth, and division, as well as accelerating chemical reactions in the body. Enzyme inhibitors may be used in the treatment of cancer to prevent the growth of particular enzymes required by cancer cells.

how have phostate minerals most affected human activity

Answers

Answer:

Explanation:

How have phosphate minerals most affected human activity? Using phosphate minerals in fertilizer allowed humans to grow more crops. The availability of rock and mineral resources has major effects on human activity.

What is MOST likely to release special chemicals in your brain that actually improve
your mood?

Answers

Answer:

Chocolate

Explanation:

Eating chocolate is yummy and makes you happy.

Answer: Endorphins

Explanation:

They reduce stress, reduce pain and improve your mood.  You can improve them by exercising and eating.

what would happen if the earth did not have an atmosphere?

Answers

Answer:

Without atmosphere life would not be possible as atmosphere protects us from harmful gases . We could not live without air present in atmosphere . In absence of the atmosphere , the earth would get so cold at night that we would not be able to survive .

. If the producer level of an ecosystem contains 46,894 calories, how much energy wouldbe found at the secondary consumer level of that same ecosystem?a. 4,689 caloriesb. 468,940 caloriesC. 468 caloriesd. 46,894 calories

Answers

Energy levels in an ecosystem

To be able to calculate how much energy there is at a certain level in an ecosystem, it is necessary to understand how the energetic pyramid works: it shows the energy retained as new biomass at each trophic level.

from bottom to top:

-Solar energy

-primary producers: 100% of energy

-primary consumers: 10% of energy

-secondary consumers: 1% of energy

-tertiary consumers: 0.1% of energy

Therefore, if there is an ecosystem with 46,894 calories, to know how many calories would be at a secondary consumer level it is necessary to multiply that number by 0.01 (which corresponds to 1% of the total energy). Then:

46,894 x 0.01 = 468.94

Therefore, the correct answer to this question is option c, 468 calories.

Please help me with this

Answers

It would be choice C since an enzyme is a protein. The monomers of proteins are amino acids showing that c is the best choice.

which specialized reproductive structures give spermatophytes their name


cones

flowers

eggs

seeds

Answers

Answer:

Cones are the reproductive structures of the conifers: Cones are diploid tissue produced by the dominant sporophyte stage. The haploid gametophyte stage develops and produces gametes inside the cone. Seeds: an important evolutionary advance in the conifers.

A) Seeds form after combining pollen and egg cells during sexual reproduction

B) Male pollen grains and female egg cells in the same reproductive organ

C) Cones containing seeds that are eaten and carried away by animals

D) Flowers designed to attract pollinators to assist in fertillization

specialized reproductive structures give spermatophytes their name

Angisperms and gymnosperms

Angiosperms have their seeds enclosed inside their fruits while gymnosperms ( non-flowering plants ) have their seeds exposed on their leave surface.The process of seeds forming after the combination of pollen and egg cells in the process of x reproduction represents a descriptive reproductive structure common in gymnosperms and angiosperms

Hence we can conclude that the reproductive structures which is common to both gymnosperms and angiosperms is seeds form after combining pollen and egg cells during x reproduction.

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Question about study of life

Answers

What are the shared properties that make something “alive”?

Factors such as natural selection and chance events can change the relative frequencies of alleles in a population.

Answers

Answer and explanation

-Factors such as natural selection and chance events can change can change the relative frequencies of alleles in a population - Speication

-Scientists create drawings of how living things are related to each other - Cladograms

-a unique trait that is used to construct a cladogram is called - derived character

How does oxygen reach the cells of the body? Explain how the respiratory and circulatory systems work together to supply cells with the materials they need?​

Answers

According to the research, the respiratory and circulatory systems have the anatomical structures responsible for pumping and distributing blood throughout the body.

How the respiratory and circulatory systems work together?

The circulatory system has the main function of transporting blood throughout the body; this blood will contain nutrients and oxygen so that they reach all the cells where the respiratory system is responsible for capturing oxygen.

In this sense, this process is carried out by means of two circuits that process blood with oxygen and deoxygenated blood:

Systemic circulationPulmonary circulation

Veins that contain oxygenated blood, such as the pulmonary veins, carry oxygenated blood from the lungs to the heart.

Therefore, we can conclude that the respiratory and circulatory systems work through two circuits to transfer oxygen and nutrients from the blood to the cells.

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100 POINTS ,Answer needed ASAP, To test the effectiveness of a new nutrient supplement one group of identical mice is given the supplement and the other group is not given any thing .which is the most complete list of the parts of the
experiment presented in this scenario. Need answer.ppl help me get it right

Answers

I believe that it is the 2nd option

Abdul and Jordan were making crafts. They were using beads, feathers, and crayons to make cards. Jordan got a little too excited at how nice his card turned out and knocked over a glass of water on their supplies. The beads, feathers, and crayons were all soaked in water. Which of the following explains what will happen to the craft supplies?

The crayons will dissolve in the water.
The feathers will dissolve in the water.
The beads will dissolve in the water.
None of the craft supplies will dissolve.

Answers

None of the craft supplies will dissolve when water soaks the supplies and is therefore denoted as option D.

What is Dissolve?

This is referred to as the process in which a solute is merged with a solvent thereby forming a solution and it varies according to certain properties and features.

The supplies such as beads, feathers, and crayons are all incapable of forming a solution with water as a result of their molecular structures and their non polar parts which is why they are referred to as being insoluble substances.

On the other hand substances like salt, sugar are capable of dissolving in water and forming a solution which are referred to as soluble substances which is therefore the reason why option D was chosen as the most appropriate choice.

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What is Mammee Apple

Answers

Answer:

Keep up these amazing fruit questions! Mammee Apple, Mamey Apple, or Santo Domingo Apricot is an evergreen tree native to South America, introduced to various other regions of the world, including West Africa and Southeast Asia. They can also be found in Florida and Hawaii. The Mammee apple is actually a berry and gets up to 20 cm in diameter. It has a thick outer rind, with soft orange to yellow pulp on the inside. It usually has one seed in the centre, but larger fruit have been known to carry up to 4. The pulp is sweet and fragrant.

Explanation:

When studying a population you are
studying the individuals in what type of
area(s)?
A. multiple areas
B. random areas
C. the same area

Answers

Answer:

A)

Explanation,

Population refers to all the citizens of the country, therefore population study means the study of all the individual that are situated situated in different part of the country.

What is a star apple?

Answers

Answer:

Ooh! Great Question, This is an incredibly yummy fruit which is an edible purple fruit with a star-shaped cross section. Looks good!

Which of these levels of biological organization contains the other three?

A. Individual
B. Organ
C. Population
D. Organ system

Answers

A population contains other three. An organ forms an organ system the system forms an individual and many individuals forms population

Why is population a crucial issue?

Population refers to all of the people who are present in a location at any given time. The population should be balanced with available means and resources because it is one of the key elements in maintaining environmental harmony.

A population is a subset of one species' members that lives in a certain area and, in sexually reproducing species, breeds with other individuals of the same species. For certain species, it is simple to define a population's geographic borders; for other species, it might be more challenging.

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do you think that the incubation period of all the animal is same? why?​

Answers

No, the incubation period of all the animal is not same because The period between the infection of an individual by a pathogen and the manifestation of the illness or disease it causes.

What is an incubation Period?

The number of days between becoming infected with something and possibly displaying symptoms is known as the incubation period. This figure is used by medical professionals and government officials to determine how long individuals must avoid contact with others during an outbreak.

What is the bird incubation period?

From species to species, incubation times might differ significantly. Small songbirds typically require between 10 and 2 weeks to hatch and the same amount of time to fledge. The flinging process can take three weeks to a month for larger birds like woodpeckers.

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How were Chandra Gupta and Asoka different?

Answers

Answer:

They were different because king Asoka didn't start out this way and his accomplishments were much smaller than Chandra Gupta II's were.

Answer:

I'm pretty sure you're talking about the rulers of the Mauryan Kingdom so here's my take.

Explanation:

Both of these monarchs approached the Mauryan kingdom in quite different ways. In order to expand the Indian empire, Chandragupta sought to govern violently and with force. Fighting, on the other hand, was frowned upon by Asoka. He reigned with greater restraint, establishing a fair administration and unifying his people.

It is important to study the genetic makeup of other organisms because information in their genetic makeup may hold information about our own.



True or false

Answers

Answer:

True, because there is still much today that we probably don't know about how DNA and genetics work, and it is proven that humans do have the same genetics and DNA patterns as other organisms. FUN FACT: Bananas surprisingly share about 60% of the same DNA as humans!

Explanation:

Hope it helps! =D

I need Human Genetics HW help

Answers

Human Genetics is the study of heredity, the process of a parent passing certain genes to their children

GeneticsThe study of heredity, or the process through which a parent transmits specific genes to their offspring, is known as genetics. Genes determine a person's appearance, including their height, eye color, skin tone, and hair color. Cells in humans have 46 chromosomes. In order to better promote health and avoid sickness, it is crucial to understand genetic variables and genetic abnormalities. The likelihood of having a kid with a birth defect, a developmental disability, or a condition like cancer or heart disease has been linked to several genetic abnormalities.

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Which is not an
effect of
overpopulation?
A. decreased competition
B. starvation of animals
C. leveling off of the population
D. disease spreading quickly

Answers

Answer:

B. starvation of animals

Which topic within this module has been the most valuable to your learning experience and why? stem in real life and in your future career?

Answers

The process of breathing is notoriously difficult to explain, mostly due to the complexity of the respiratory system inside the human body.

This is further explained below.

What is the respiratory system?

Generally, In animals and plants, the respiratory system is a biological system that consists of certain organs and structures that are responsible for the process of gas exchange.

The size of the creature, the habitat in which it lives, as well as its evolutionary history all has a significant impact on the anatomy and physiology that are responsible for making this happen.

In conclusion, The act of breathing is famously difficult to describe, and the primary reason for this is the intricate nature of the respiratory system that exists inside the human body.

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CQ not Found  as per module

Density is mass per unit _____________________ ?

Question 10 options:

strength


volume


weight


length

Answers

Answer: Volume

Explanation: The formula of density is Density = mass/volume.

Volume is how much space something takes up.

If Earth suddenly weighed twice as much as it currently does, how would this change the tides? Explain.

Answers

The mass might now no longer change. The weight (mg) might be expanded through two times the quantity of the acceleration because of gravity to that of Earth, that is 9.8ms2 on Earth.

Tidal forces are primarily based totally at the gravitational appealing pressure. With regard to tidal forces at the Earth, the space among  items commonly is extra important than their masses. Tidal producing forces range inversely because the dice of the space from the tide producing object.the pressure of gravitational appeal among them additionally increases.

If the mass of one of the items is doubled, then the pressure of gravity among them is doubled. If the mass of one of the items is tripled, then the pressure of gravity among them is tripled.

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statement that describes the process of cellular respiration

Answers

Answer:

Statement that describes the Process of Cellular Respiration is Converting chemical energy that is stored in food molecules into a form that is useful to living things.

Explanation:

Living cells release energy through the breakdown of glucose molecules, a process known as cellular respiration. There are three processes that make up cellular respiration.

GlycolysisKrebs CycleElectron Transport Chain

Glycolysis, the first phase of cellular respiration, happens in the cytoplasm. In this step, enzymes convert a glucose molecule into two pyruvate molecules, releasing energy that is then transferred to ATP. Following glycolysis, the pyruvate is transformed into two molecules of acetyl CoA in a brief event known as the transition reaction.

The other two phases of cellular respiration take place in the organelle known as a mitochondrion. The inner membrane of the mitochondrion encloses a region known as the matrix, and the outer and inner membranes are separated by an intermembrane space.

The Krebs cycle, the second phase of cellular respiration, occurs in the matrix of a mitochondrion. At this point, the cycle completes two rounds, producing all of the carbon atoms.

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can someone please awnser this for me I'll make you brainliest and give 5 stars ​

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When the Carbon dioxide changes  its state from gas to solid directly that is called dry ice.

How might dry ice be used for cleaning?

Similar to sand blasting, dry ice cleaning, commonly referred to as cryogenic cleaning, uses solid CO2 or dry ice pellets instead of sand. The pellets expand by a factor of 700 when they hit the ground and evaporate into carbon dioxide gas. This expansion causes the contaminant to be raised and separated from the basic substance. creates daily dry ice blasting tools and exports them to numerous nations across the world.

In order to create dry ice, gaseous CO2 is first compressed and rapidly cooled to create liquid CO2. The liquid is next allowed to expand at a lower pressure to create CO2 snow. Finally, a hydraulic press compresses this snow into usable Dry Ice blocks, slices, or pellets.

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Which factors give cellulose the ability to form long fibers with high tensile strength

Answers

Answer:poop

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