help please!!! hurry! thanks

Help Please!!! Hurry! Thanks

Answers

Answer 1

Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not necessarily


Related Questions

Where in the Cell is DNA found?
Mitochondria
Ribosome
Nucleus
Cytoplasm

Answers

Answer:

Nucleus

Explanation:

have a nice day !!

Answer:

[tex]\boxed {\tt Nucleus}[/tex]

Explanation:

DNA, or deoxyribonucleic acid, carries genetic information and instructions for making proteins. In a eukaryotic cell, DNA is mostly found in the nucleus, but it is in other organelles, like the mitochondria. Since the majority of the DNA is in the nucleus, the correct answer is C. nucleus.

Which eukaryotic kingdoms could be made up of multicellular organisms

Answers

Answer:

the inside

Explanation:

Researchers propose a model to explain variation in phytoplankton cell sizes in a marine environment. They base their model on the idea that smaller cells absorb nutrients more efficiently. The researchers predict that the mean diameter of phytoplankton cells will change by 50 micrometers for every 5-kilometer increase in distance from the shore because of a gradual decrease in nutrient availability. To test their model, the researchers determine that the phytoplankton cells found closest to shore have a mean diameter of 900 micrometers. Based on the model, what will be the mean diameter of the phytoplankton cells that are found 25 kilometers from shore?

Answers

The mean diameter of  phytoplankton cell is 650 micrometers at a distance of 25 kilometers from the sea shore.

The mean diameter of  phytoplankton cell is 650 micrometers because at every 5 kilometers, decrease occur in the diameter of phytoplankton cell about 50 micrometers and we know that the the diameter of phytoplankton cell is 900 micrometers so for 25 kilometers there is 250 micrometers decrease occur in the diameter of phytoplankton cell.

So this 250 micrometers are substracted from 900 micrometers we get 650 micrometers. So we can say that the mean diameter of  phytoplankton cell is 650 micrometers at 25 kilometers distance from the sea shore.

Learn more: https://brainly.com/question/17549978

5 On his voyage on the HMS Beagle, Darwin saw fossils of giant sloths whose bones resembled bones of living sloths, but were much larger in size. Darwin hypothesized that the fossil sloths were related to sloths alive today. This hypothesis was based on (1 Point)​

Answers

Answer:

A: observation and inferences

and on this one I am 100% sure it is right

Explanation:

Based on the information in the graph, choose the statement that best describes the reaction it depicts. A. The reaction absorbs energy. B. The reaction releases energy. C. The reaction fails to proceed because of insufficient energy. D. The reaction fails to proceed because it does not involve an energy change.

Answers

Answer:

The answer is B the reaction releases energy.

Explanation:

As per the graph, the reaction will release energy. The correct option is B.

What is exothermic reaction?

A heat-producing task is an exothermic process. This heat is conveyed to the external environment. Endothermic processes require heat to be supplied to the system from outside the system.

Exothermic reactions are heat-producing chemical reactions. When heat flows from the system to the surroundings, the heat flow q is negative. Exothermic reactions, therefore, have a negative enthalpy of reaction.

Thus, the correct option is B.

For more details regarding exothermic reactions, visit:

https://brainly.com/question/10373907

#SPJ6

What are the 5 main steps in the formation of the Solar System?

Answers

Answer:

These steps should cover it all

Can i have brainley please

Explanation:

Step 1 of the formation of the solar system

the solar nebula collapses

Step 2 of the formation of the solar system

rotating protostellar disk

Step 3 of the formation of the solar system

center of nebula fusion begins, star is born

Step 4 of the formation of the solar system

Planeteseimals eventually planets form

The formation of clumps, its collapse, heating and rapid cooling, formation of planetesimals, and Oligarchic growth  are the five main steps of solar system formation.

What is a solar system?

The Solar System is composed of the Sun and the planets gravitational bound to the Sun.

The Solar System went through five stages of creation and initial evolution:

The establishment of dense clumps within a massive molecular cloud.The clumps crumble by gravitational force to establish a protostar; angular momentum conservation outcomes in a protoplanetary disc.The sudden heating and cooling of dust results in the formation of Ca-Al-rich refractory aggregates (CAIs) and spatters of silicate melt.Planetesimals form from dust, CAIs, and chondrules.Oligarchic development into planet embryos and planets.

Thus, above mentioned are the five steps in formation of solar system.

For more details regarding solar system, visit:

https://brainly.com/question/12075871

#SPJ2

A 7.2 × 10–5 C charge has an electric potential energy of 1.08 × 10–2 J. The electric potential, to the nearest whole number, is V.

Answers

Answer:

150.

Explanation:

On edge

The electric potential, to the nearest whole number is 150 V.

What is the electric potential energy?

The electric potential energy denoted by U is proportional to the charge and inversely proportional to the distance between the point where its is brought from infinity to the charge.

U = kQ₁Q₂/r

For identical charge,

U =kQ²/r................(1)

and the electric potential is given by

V = kQ /r................(2)

Dividing both the equations, we get

U/V  = Q

Substitute charge Q =  7.2 × 10⁻⁵ C, Electric potential energy U = 1.08 × 10⁻² J, then the electric potential will be

V  = 1.08 × 10⁻² /   7.2 × 10⁻⁵

V = 150 Volts

Thus, the electric potential is 150 Volts.

Learn more about electric potential energy.

https://brainly.com/question/12645463

#SPJ2

Students in a science class were asked to investigate how missing or damaged
organelles affect cellular homeostasis for cells found in muscle tissues.
Which of the following questions should they ask to determine if these muscle cells
are functioning properly? (AKS 151)
At what rate do the chloroplasts of the cell need to capture enough sunlight to
meet the high energy needs of the cell?
At what rate do the ribosomes of the cell need to work to produce enough
glucose to meet the high energy needs of the cell?
At what rate do the mitochondria of the cell need to convert glucose to usable
energy molecules to meet the high energy needs of the cell?
At what rate does the cell wall need to break down its carbohydrate structure to
meet the high energy needs of the cell?

Answers

Answer:

At what rate do the mitochondria of the cell need to convert glucose to usable

energy molecules to meet the high energy needs of the cell?

Explanation:

Organelles are organ-like structures found in cells. The are responsible for the specific actions carried out by each cell. Each organelle has its own specific role to play. However, missing or damaged organelles can have effects on the cells.

Mitochondria are organelles found in cells of all eukaryotic living organisms e.g animal, plants as they are responsible for the synthesis of energy in form of ATP. Since the cells being investigated in this question is a MUSCLE CELL, which is only found in animals, then an appropriate organelle must be investigated.

The appropriate to be asked to know if muscles cells are functioning properly is: At what rate do the mitochondria of the cell need to convert glucose to usable energy molecules to meet the high energy needs of the cell?.

Note that, other options are incorrect because muscle cells do not have chloroplast and cell wall, while ribosomes are not site for glucose production.

According to the article, what are the problems with monoculture farming? Your answer should be written in sentences and not constructed as a list.

Answers

Answer:

In addition to overproduction, industrial monoculture predisposes farms to pest problems. To keep up with intensified production, farmers increased pesticide and fertilizer usage, crop density, and the number of crop cycles per season, but decreased crop diversity

Explanation:

Monocultures lack other plant and animal species that limit the transmission of disease and manage pests through predation, which increases the danger of disease and pest outbreaks.

What is monoculture farming?

One variety of crop is grown at a time on a particular field in a practice known as monoculture farming. A poly culture system, in contrast, presupposes that two or more crops are sown in a field at once.

Because monoculture farming has the potential to disrupt the natural soil balance, it is not sustainable.

The soil moisture is unstable in a typical monoculture situation. Due to the increased need for water to irrigate crops, water sources including rivers and reservoirs are being unevenly drained.

Therefore, monoculturing is not suitable.

Learn more about monoculture farming here:

https://brainly.com/question/12800334

#SPJ2

Shannon wants to see if the amount of time she studies will affect her grades. She normally studies for 30 minutes a night but decides to double her study time to one hour per night. Over the next three weeks, Shannon sees her science grade raise 10%
A. Independent Variable=
B. Dependent Variable=
C. Control=

Answers

Answer:

it is an independent variable as it can be changed by studying and also a dependent variable as you can measure her results and see its increase or decrease

Explanation:

hope this helps

could u pls help me with my latest questions pls pls pls pls pls

The variables in the given situation would be as follows:

A). Independent Variable: Amount of time given on study

B). Dependent Variable: Grade in Science

C). Control: Additional Study of 30 minutes

In an experiment or research, an independent variable is described as a variable that remains unaffected by the change in other but rather a manipulation or change in it can affect the other variables. Dependent variables are the variables that receive a direct effect of change in the other variable and therefore, it is the variable that the researcher aims to measure or study.While control helps in making the comparison of the results with or without it. Thus, the given variables are classified in this situation as mentioned above.

Learn more about "Variables" here:

brainly.com/question/19585043

Select all answers that reflect contributions molecular approaches have made to modern taxonomy. Check All That Apply revealed that ssu rRNA is highly conserved so can be used for classificationrevealed that ssu rRNA is highly conserved so can be used for classification have led to the development of a new taxonomic system divided into domainshave led to the development of a new taxonomic system divided into domains have not changed the overall tree of lifehave not changed the overall tree of life revealed that archaea are more closely related to prokaryotic than eukaryotic cells

Answers

Answer:

- revealed that rRNA is highly conserved so can be used for classification

- have led to the development of a new taxonomic system divided into domains

Explanation:

The ribosomal RNA (rRNA) genes are widely used in evolutionary, phylogenetic, and phylogeographic studies as molecular markers because they represent nuclear genes that are highly conserved between species. However, it is important to highlight that rRNA genes form arrays at specific chromosomal sites, thereby they often exhibit pseudogenes that may interfere with their use as molecular markers (i.e., they produce multiple bands in the electrophoresis gel). In 1977, Carl Woese showed that Archaea is an evolutionary lineage separated from Bacteria by using molecular evidence based on an rRNA molecular marker (16S rRNA). Thus, Woese indicated that Eukarya, Bacteria and Archaea represent three different domains that arose separately from an evolutionary ancestor named 'progenote'.

1) Which of the following types of heterotrophs eat other animals?
A. omnivores
B. herbivores
C. carnivores

Answers

Answer:

A & C (Omnivores and Carnivores) eat other animals.

Answer:

A and c

Explanation:

heterotrophs eat other animals?

. omnivores and carnivores

You are running a marathon and observe that running increases your pulse rate. Using what you know about the scientific method complete the following:

1. Hypothesis: __________________________________________________________________

_____________________________________________________________________________

2. Independent variable: _________________________________________________________

3. Dependent variable: ___________________________________________________________

4. Controlled variables (at least 3): _________________________________________________

_______________________________________________________________________________

5. Control Treatment: ___________________________________________________________

6. Experimental Treatment: _______________________________________________

Answers

Answer:

hypothesis is A hypothesis (plural hypotheses) is a precise, testable statement of what the researcher(s) predict will be the outcome of the study.

Explanation:

independent variable is what u can change

dependent variable is the one u can measure

control variable is one u keep the same

control treatment In the design of experiments, treatments are applied to experimental units in a treatment group. In comparative experiments, members of a control group receive a standard treatment, a placebo, or no treatment at all. There may be more than one treatment group, more than one control group, or both

experimental treatment in research, the conditions applied to one or more groups that are expected to cause change in some outcome or dependent variable.

In Oxygen molecule O2, stability is gained through sharing of​

Answers

Answer:

Trees and plants.

Explanation:

Trees give us oxygen and plants get rid of carbon dioxide and remake it as oxygen.

In the Oxygen molecule O2, stability is gained through sharing of​ two pairs of electrons with a single neighboring atom.

What is the sharing of electrons?

The sharing of electrons gives rise to the formation of covalent bonds between two atoms. Atoms will be covalently bonded in order to gain more stability. During the process of sharing electrons,  they are simultaneously attracted by the two atomic nuclei.

The stability of oxygen molecules is gained through the help of non-polar covalent bonds. This means that there is no difference in electronegativity of bonded atoms.

The valence shell of oxygen has six electrons, so they need two more electrons in order to fulfill its octet and maintain stability. The sharing and paring of electrons between two or more atoms construct a bond known as covalent bonds.

Therefore, in the Oxygen molecule O2, stability is gained through sharing of​ two pairs of electrons with a single neighboring atom.

To learn more about Sharing of electrons, refer to the link:

https://brainly.com/question/1371228

#SPJ6

How is it possible that all animal life depends on the chloroplast for energy

Answers

chloroplast contains chlorphyll . Chlorophyll is used in photosynthesis to produce glucose . (photosynthesis is a process where green plants manufacture simple sugar (glucose) from carbondioxide and water by using sunlight ) 6co2+6h2o=c6h12o6+6o2

if theres no chloroplast no glucose will be produced so animals will have no energy. chloroplast must be present in order of photosynthesis to take place and produce glucose , when plants produce glucose animals get the energy needed by feeding on plants (in simple words animals eat the sugar that plants have produced )

Where are there typically more ecological hotspots?

Answers

Answer:

There are currently 36 recognized biodiversity hotspots. These are Earth's most biologically rich—yet threatened—terrestrial regions. To qualify as a biodiversity hotspot, an area must meet two strict criteria: Contain at least 1,500 species of vascular plants found nowhere else on Earth (known as "endemic" species). The Andes Mountains Tropical Hotspot is the world's most diverse hotspot. About one-sixth of all plant species in the world live in this region. The New Zealand archipelago is another hotspot.

Explanation:

A basic solution will have
O a low hydrogen ion concentration and a high pH.
O a low hydrogen ion concentration and a low pH.
O a high hydrogen ion concentration and a low pH.
O a high hydrogen ion concentration and a high pH.

Answers

Answer:

a low hydrogen ion concentration and a high pH

How is tonicity affected by solutes?

Answers

Unlike osmotic pressure, tonicity is influenced only by solutes that cannot cross the membrane, as only these exert an effective osmotic pressure. Solutes able to freely cross the membrane do not affect tonicity because they will always equilibrate with equal concentrations on both sides of the membrane without net solvent movement.

PLEASE HELP MEH!!!!

A patient’s blood is tested for growth hormone which has a molecular mass of 848.952 g/mol. The test results show a normal concentration of 4 . 0 × 10 − 6 g/L. How many moles of growth hormone are in 1 L of blood?

Answers

30 g molecular concrete

In red shift the wavelengths of light become ?

Answers

What subject is hypos? *this

Enzymes are biological catalysts. Enzymes are proteins that are found inside cells to
increase the rate of chemical reactions within each cell. Enzymes are denatured
(destroyed) by various environmental conditions. Amylase is an enzyme in the digestive
system that helps to break down complex carbohydrates into simple sugars.
HYPOTHESIS: Amylase works best in an environment with a pH level of 7. what is the independent and dependent variable sum1 please help!

Answers

Answer:

Explanation:

independent= pH as you will change the pH in order to test your hypothesis and see if it's true

dependent= how amylase works-needs to be measured so you can see how easily it does it function depending on the pH (dependent on the independent variable)

The independent variable is pH, you change it to test your hypothesis; The dependent variable is the activity of amylase enzyme depend on the pH value.

What are the properties of an enzyme ?

Enzymes are protein catalysts that speed up the rate of biochemical reactions

The  enzyme activity is pH-specific, catalyze both forward and reverse reaction but do not decide the direction of the biochemical pathway.

An enzyme have active site which bind to substrate  and form desired products.

Several factors influence the enzyme activity like heat, temperature and varying pH.

Enzyme show absolute, relative, group, stereo-specificities and regulatory function.

Physical properties include enzyme act as colloid, it become inactivated below boiling point of water.

Enzymes are  thermos-labile as it can withstand temperatures of 100 degrees.

The optimum temperature needed for enzymatic activity varies from 25 degrees Celsius to 45 degrees Celsius.

Learn more about enzyme, here:

https://brainly.com/question/1419573

#SPJ2

Transpiration is the loss of water from the leaves of plants. The stomata of leaves must
open to allow carbon dioxide to enter the leaf for photosynthesis, but when they are open,
water vapor escapes into the atmosphere.
HYPOTHESIS: As the intensity of light is increased, the rate of transpiration will increase,
as measured in by the loss of mass of the plant.
what is the independent and dependent variable HELP

Answers

Answer:

Explanation:

dependant= loss of mass of the plant (not sure) as you're measuring it i guess? or it may be transpiration. which one are you actually measuring

independent=light of intensity as you're changing

What relationship does Organism Y have with the other organisms in figure 1?

1. It is the herbivore that feeds on autotrophs.

2. It is the producer that provides the food base.

3. It recycles nutrients by breaking down organic matter.

Answers

I think it’s number 2. The plant can feed the other organisms

Which clue can be used to identify a chemical reaction as a combustion reaction? Oxygen is a product. A hydrocarbon reacts with oxygen. Water and carbon dioxide react. The reaction involves ions.

Answers

Answer:

A hydrocarbon reacts with oxygen

Explanation:

The clue that can be used to identify a chemical reaction as a combustion reaction from the options would be if a hydrocarbon reacts with oxygen.

Basically, a combustion reaction is a kind of reaction involving oxygen and another reactant with energy being released in the process. The energy is usually in the form of light and heat.

Thus, following the definition:

Oxygen is rather a reactant, and may not be a product in combustion reactionsWater reacting with carbon dioxide is not a combustion reactionReaction involving ions may not be a combustion reaction

The only reaction that may identify as a combustion reaction is, therefore, the one involving hydrocarbon and oxygen.

More on combustion reactions can be found here; https://brainly.com/question/12172040

What two factors keep Earth in orbit around the sun and the moon in orbit around Earth? A:gravity and distance B:Mass and distance C:force and speed D:gravity and force

Answers

Mass and Distance. If the moon had a larger mass or was farther then it would fall out of Earths orbit. Same for Earth. The mass and distance affect where the planet falls into orbit

Answer:

gravity and inertia Gravity keeps Earth, along with the other planets in line, as inertia keeps them moving creating an orbit.  

its C hope it help

What defines the carrying capacity of a particular species?please help

Answers

carrying capacity can be defined as a species' average population size in a particular habitat :)

Explanation:

avarage particular size in capacity

All of the following movements can occur across the intervertebral joints of the vertebral column except:______
a) extension.
b) lateral flexion.
c) flexion.
d) dorsiflexion.

Answers

Answer:

D) dorsiflexion

Explanation:

extension, lateral flexion, flexion can occur across intervertebral joints of the vertebral column. Dorsiflexion is the odd one out.

Dorsiflexion is the act of bringing the toes closer to the shin, it is also referred to as the backward bending of an individual's foot or hand. when someone is walking on the heels of their ankle, their ankle can be described to be in dorsiflexion. therefore option d answers the question.

Choose the answer that describes biological weathering.

A: lichen growing on rocks

B: salt crystallization forming tafoni

C: stone and boulders moved by water

D: acid in water acting on limestone

Answers

Answer:

A.  lichen growing on rocks

Explanation:

Lichen growing on rocks and types of bacteria produce chemicals that weather minerals 3 to 4 times faster than normal.

Plants' roots, mosses, and lichen which grow on rocks highly responsible for biological weathering, hence option a is correct.

What is biological weathering?

Rocks are biologically weathered by living things like lichens, mosses, and plant roots, among others.

When plants break apart rocks with their roots or root exudates, this is known as biological weathering. The delayed process might have a significant impact on how a landscape is formed.

Mosses and lichens are able to break down the rock on which they grow by producing various acids.

Therefore, lichens and non-vascular plants can speed up the weathering of the rock they grow on significantly, hence option a is correct.

Learn more about weathering, here:

https://brainly.com/question/14045251

#SPJ5

Explain how the bacteria and animals around the hydrothermal vents showed scientists that life was much more adaptable than they had believed.

Answers

Explanation:  

Well, its extremely hot in the hydrothermal vents. Scientists simply believed it would be impossible for anything to survive due to the heat. Bacteria and micro-organisms were able to adapt to growing there, though. So in short words, they survived extreme conditions teaching scientists that life was quite adaptable.

Weird fun fact: In Switzerland it is illegal to own just one guinea pig. Felt the need to mention that ^ Sorry, I know it has nothing to do with the question but i felt it was worth speaking of.

4. If a galaxy is moving towards us, what would happen to the wavelengths of light that we see? How
would that change what we see?

Answers

Answer:

Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. ... When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.

Other Questions
-V35 is it an irrational number Are we as humans naturally brutal? Explain whether you think we are naturally brutal or not and why.lass comments what is one way you can easily tell that 3/6 is not a simplified fraction what were complaints against King George III Sovle for x . 4(x-4)=36 This is the minimum age required by the Constitution for a person to be President. Potassium is a nutrient that many Americans don't get enough of. Which of the following is a good plant-based source of this mineral known to help regulate blood pressure? A. Dried Apricots B. Bananas C. Orange Juice D. All of the above PLEASE HELP ME IM BEGGING YOU which type of government consists of a single, self-appointed ruler who holds political control over an entire country? which coordinates are closest to the absolute location of cairo 2. Which of the following best describes John Locke's feelings about religion?*He thought there should be one national religion that everyone followsHe believed that people should be free to practice any religion they want. 2He believed that religion should not be practiced at all.He thought that people should be able to practice any religion, as long as thegovernment approved it. PLEASE HELP!Reduce to simplest form.5/8 - (- 7/2) An aluminum cylinder has a radius of 3.2 cm and a length of 8.6 cm. What is the mass of the aluminum cylinder if aluminum has a density of 2.7 g/cm3?please help :) One side of triangle is 3x -5.. the other side is 19-x and the base is 2x. What is the perimeter of the triangle What is a labor Union? Which wavelength of light is NOT absorbed by riboflavin? Which of the following benefits could an organization reasonably expect from an effective budget program? Select one: a. Better control of the organization's costs. b. Better coordination of an organization's activities. c. Better communication of the organization's objectives. d. All of the above. What is a story's conflict?O A. The rising action, climax, and resolution of a story.O B. A character's actions to fix a problemO C. The series of events in a storyD. A struggle or a problem in a story 5x2x_=90A-9 B-10. C-80. D-83 Suppose you wanted to find out what percentage of upper class Western High students own cars? You decided to do a stratified sample based on the junior and senior population at school. There are 800 seniors and 1,200 junior at Western for a total of 2000 students. How many juniors and seniors would you survey if you were to take a sample of 100 students. Hint - This requires a little math - First figure out the percentages of each subgroup to the total number of upper class students.