Your heart works by:
entirely voluntary muscle contraction.
entirely involuntary muscle contraction.
a balanced mix of voluntary and involuntary muscle contraction.
almost entirely involuntary muscle contraction, but sometimes voluntary contraction
Answer:
a balanced mix of voluntary and involuntary muscle contraction.
Explanation:
a balanced mix of voluntary and involuntary muscle contraction.
A student decided to find the density of her house key to try and identify the type of metal from which it is made. She found the volume of the key to be 5 mL and the mass to be 39.5 g. Using the chart above, from which type of metal is the key made?
Going by the density of the key which is 7.9 g/mL, the key is likely made from iron.
DensityThe density of a substance is the ratio of the mass of the substance and of its volume.
The density of a substance can be mathematically expressed as:
Density = mass/volume.
Considering the key in question whose volume is 5 mL and mass is 39.5 g. The density can be determined as:
Density of the key = 39.5 /5
= 7.9 g/mL
In order to determine the nature of the metal that the key was made from, one would need to check the table of density of metals. Any metal whose density corresponds with, or is close to 7.9 g/mL would be the metal that the key is made from.
From a chart of density, the metal with a density of 7.9 g/mL is iron.
In other words, the key must have been made from iron.
More on density can be found here: https://brainly.com/question/15164682
#SPJ1
what are the two processes in meiosis that create genetic differences among cells?
Answer:
independent assortment during anaphase and crossing over during prophase
Explanation:
genetic material is swapped during crossing over
chromosomes from either mother or father could be put into any gamete during independent assortment
The two processes in meiosis that create genetic differences among cells are independent assortment and recombination.
What are recombination and independent assortment?DNA fragments are broken and recombined during the recombination process to create novel allele combinations. The genetic variation that results from this recombination process at the gene level reflects variations in the DNA sequences of various species.
Recombinant and novel gene combinations are produced by the independent collection of genes.
The connected genes do not demonstrate independent assortment, since they are inherited together. More parental types and fewer recombinant are created because connected genes lack independent assortment.
Thus, the two processes are independent assortment and recombination.
To learn more about independent assortment, refer to the link:
https://brainly.com/question/19412775
#SPJ12
Every enzyme has a different sequence(order) of amino acids, so every enzyme has a different________.
- temperature
- shape
- activation energy
- specific heat
Every enzyme has a different sequence (order) of amino acids, so every enzyme has a different shape (Option 2).
What does dictate enzyme structure?The enzyme structure depends on the linear sequence of their subunits, which are represented by amino acids. These subunits (amino acids) are linked together by peptide bonds to form the primary structure of proteins, which associates different amino acids in the chain to form structures of higher order (i.e., secondary, tertiary and quaternary structures)
Therefore, we can conclude that enzyme structure is due to the linear sequence of amino acids that are linked by peptide bonds.
Learn more about enzyme structure here:
https://brainly.com/question/18884307#
#SPJ1
Which elements make up a water molecule?
hydrogen and nitrogen
oxygen and nitrogen
oxygen and carbon.
hydrogen and oxygen
Answer:
Hydrogen and Oxygen: The liquid condition of H2O at standard pressure and temperature is referred to as "water."
Explanation:
The polar chemical component and molecule known as water is a liquid at normal pressures and temperatures. According to its chemical composition, each molecule of water has one oxygen atom and two hydrogen atoms. Due to their polarity, water molecules can form up to four hydrogen bonds with molecules close by, regardless of whether they are in a liquid or solid state. Hydrogen bonds are roughly ten times stronger than the Van der Waals force, which attracts molecules to one another in most liquids. This explains why water has far higher melting and boiling points than other compounds that are analogous to it, including hydrogen sulfide.
Water contains numerous distinctive biological characteristics that are essential for the growth of life. It does this function by enabling organic chemicals to interact in ways that eventually permit replication. Water is essential to all known kinds of life. Water is crucial for many bodily metabolic processes as well as serving as a solvent in which many of the body's solutes dissolve. Anabolism and catabolism together make up metabolism.
To learn more about the Elements in Water you can visit this link: https://brainly.com/question/15696890?referrer=searchResults
#SJP
Which statement describes how energy moves through an ecosystem?
OA. The Sun's energy is captured by primary consumers, and about
10% of the energy at each level is available to the next trophic
level.
OB. The Sun's energy is captured by producers, and about 90% of the
energy at each level is available to the next trophic level.
OC. The Sun's energy is captured by primary consumers, and about
90% of the energy at each level is available to the next trophic
level.
OD. The Sun's energy is captured by producers, and about 10% of the
energy at each level is available to the next trophic level.
[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]
[tex]\texttt{D.) The sun's energy is captured by} [/tex] [tex] \texttt{producers, and about } [/tex][tex]{ 10% } [/tex][tex] \texttt{of the energy is available to} [/tex][tex] \texttt{the next trophic level. } [/tex]
____________________________________
[tex] \large \tt Solution \: : [/tex]
Producers are the ones who are responsible for making their own food, in this process they capture energy from sunlight. And as we move in the food chain, 10 of the whole energy is transferred to next trophic level, as most of the energy is consumed by the organism itself.
Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Answer:
D. The suns energy is captured by producers, and about 10% of the energy at each level is available to the next trophic level.
Explanation:
Got Correct On ASSIST.
How does the temperature of water change if you heat it after it has alread
reached the boiling point?
The temperature of water does not change.
This is because when water is heated to its boiling point of 100 degrees Celsius, it usually takes more energy to turn a liquid into a gas, so the extra heat helps with that conversion. The temperature of water, even if it reaches its boiling point, does not change until all the water evaporates into the atmosphere. Depending on the type of container, the temperature will rise when the water runs out.
To know more about this topic, click on https://brainly.com/question/12818090
How might you model the relationship between a tomato plant and the hornworm catepillar?
Answer:
Parasitism.
Explanation:
The relationship between a tomato plant and the hornworm caterpillar is parasitism because parasitism is a type of symbiotic relationship in which one organism get benefits and the other get harmed. We know that hornworm caterpillar feed on leaves and destroy the tomato crop. So it gets nutrients from tomato plant and the tomato plant is negatively affected. The input of this system is the vegetative part of tomato plant while the output is the conversion of hornworm caterpillar into a moth.
Add to brainliest! ok
Whats the correct answer answer asap
Answer:
pepsin
Explanation:
This is used in the breakdown of proteins
Which of the following type of forest is likely to have the most nutrient-rich soil?
Responses...
A. tropical rain forest
B. coniferous forest
C. tropical dry forest
D. deciduous forest
Answer
ATropical rain ️ forestAnswer: The correct answer is D. deciduous forest
Explanation: This answer has been confirmed correct.
The temperate deciduous forests have the most nutrient-rich soil.
Which phrase best describes
nuclear fusion?
the spontaneous emission of radiation from an unstable nucleus
the process by which small nuclei
combine into a
larger nucleus
the process by which a large nucleus IS divided into smaller nuclei
d
series of reactions in which particles from one reaction trigger the next reaction
Answer: A larger nucleus
How does an enzyme catalyze a chemical reaction?
A. It reduces the amount of energy needed for the reaction to begin.
B. It reacts with the substrate to form the product.
C. It makes a copy of the sequence of nitrogen bases in the
substrate.
D. It forms a layer of insulation that protects the substrate from the
cold.
Answer:
A
Explanation:
An enzyme does not alter a chemical reaction but shift so as to neutral it.
Option A is most suitable
1. What class of biological molecules does sugars belong to?
2. How do sugar molecules provide us with energy?
3. What other molecules (besides sugars) serve as a source of energy for our bodies? How do they do that?
4. How do we know how much energy different types of food have? Why food labels list everything per 2000 kcalorie diet?
5. How do we know how much food do we need to eat?
6. Are your energy consumption and energy expenditure balanced? How do you know that? Hint: compare your BMI and energy needs calculations
7. What is the role of physical activity and exercise in balancing our energy consumption and energy expenditure? Are there any additional benefits of physical activity (besides energy balance)? What is your favorite form of physical exercise?
1. Sugar is a monosaccharide or a disaccharide. Sugars are also known as any sweet crystalline solid disaccharide (sucrose).
2. Sugar molecules provide us energy by breaking it into micromolecules and then the cell gets energy from it.
3. Proteins and lipids are the molecules that serve as a source of energy in our body.
4. We know how much energy different types of food have due to the presence of macromolecules in them.
5. The main role of physical activity and exercise in balancing our energy consumption and energy expenditure is that physical activity consumes a high amount of energy for its activities.
What class are sugars related to?Sugar belongs to the class of carbohydrates, carbohydrates, sugar, carbohydrates are the molecules that condense carbon, hydrogen, and oxygen. Your body smashes down carbohydrates and changes them into a simple sugar called glucose. This ready form of energy is carried through the blood and delivered to every cell. The supply of glucose needs to be constant and dependable, so your body has developed several systems to make sure of this supply and get the energy.
Other molecules, such as fatty acids and proteins, can also serve as energy sources when they are funneled through suitable enzymatic tracks. sugar depends on many factors, counting your height, age, general state of health, job, time off time activities, physical activities, genetics, body size, and environmental factors.
Learn more about it Sugar here: https://brainly.com/question/542580
#SPJ1
How would you ensure you have valid data?
PLS HELP ITS DOU TOMORROW!!
6TH GRADE SCIENCE
Answer:
To ensure valid data, you have to run it twice or three times and see if you get the same thing you got to before
In the exponential model of population growth, the growth rate remains constant. O keeps changing. O increases and then decreases. O increases.
In exponential model of population, the growth rate remains constant regardless of population size.
What is population growth and how come the population growth in exponential form remains constant?Population growth simply means the growth of population , the growth in the amount of people holding a population.Population growth are of two types , logistic and exponential population growth .Population growth varies from the population of bacteria in culture plate, to the population of tiger to humans.Population growth can be measured by different means like population density , growth per capita.The exponential growth simply keeps constant regardless of how fast the population is growing.To know more about exponential growth visit:
https://brainly.com/question/11487261
#SPJ13
a short pea plant that is heterozygous for flower colour is crossed with a homozygous tall pea plant that is also heterozygous for a flower colour. determine the genotypes of the plant. what gametes can the plants produce
The genotypes of the plant are,
Short Plant + Heterozygous Flower Color- ttYy
Homozygous Tall Plant + Heterozygous Flower Color- TTYy
The gametes for short plant with heterozygous for flower color are tY, and ty. Where gametes for homozygous tall plant with heterozygous for flower color are TY, and Ty.
T- Tall height allele, t- short height allele; Y/y- Flower color allele.
Heterozygous Allele- A gene can exist in two or more different forms, known as alleles, and they can all be present at the same location, or locus, on a chromosome. The term "heterozygous" describes the presence of several alleles for a given characteristic.
Homozygous Allele- In terms of genetics, being homozygous means have inherited the same alleles (versions) of a genetic marker from both biological parents. A person who possesses two identical copies of a genetic marker is said to be homozygous for that marker.
To know more about the Homozygous, and Heterozygous Allele, click on the below link,
https://brainly.com/question/15780081
#SPJ1
how dose the number of chromosomes found in the two daughter cells compare to the number of chromosomes found in the mother cell
Question in picture!
What is a sugar apple?
Answer:
Ooh! Loving all these fruit questions, Anyways this is a great fruit. Sugar Apples or Sweetsop is native to the tropical Americas but is also widely grown in Pakistan, India, and the Philippines. The fruit looks a bit like a pine cone and is about 10 cm in diameter. Under the hard, lumpy skin is the fragrant, whitish flesh of the fruit, which covers several seeds inside, and has a slight custard taste.
Explanation:
What’s the correct answer asap for brainlist
If carbon dioxide is removed from a plant’s environment, what would you expect to happen to the plant’s production of glucose molecules?
Explanation: If you remove its carbon dioxide, supplants need come dioxide to produce glucose. Carbon dioxide is the carbon source for advance glucose production via via photosynthesis. So with that becomes dioxide, they cannot make glucose, they cannot make glucose. And so the mass production of glucose would have to stop.
the distance between Earth and mars is 2.25Km. When converting using the conversion factor 1 AU=1.5 x 10 power 8km, the distance between the planets is__ . the astonomical unit AU is__ a light year
The complete statement is given as "The distance between Earth and mars is 2.25Km. When converting using the conversion factor 1 AU=1.5 x 10 power 8km, the distance between the planets is 1.5 AU."
This is further explained below.
What is an astronomical unit?Generally, The astronomical unit is a measure of length that is equal to 8.3 light minutes or 150 million kilometers. It is approximately equivalent to the distance that separates the Earth and the Sun.
In conclusion, The distance from Earth to Mars is about 2.25 kilometers. Using the conversion factor that one AU is equal to 1.5 x 108 kilometers, the distance that separates the planets is calculated to be 1.5 AU.
The light-year and the AU are not interchangeable units of measurement. The distance traveled by light throughout one year is about 9.5 x 1012 kilometers.
Read more about astronomical unit
https://brainly.com/question/15279691
#SPJ1
What incentives does the government
offer to business who lower their
carbon emission and use alternative
energies?
A. free waste disposal
B. tax breaks
C. free alternative energy sources
D. more land to expand to
PLEASE HELP ME!
For qualifying renewable energy technologies and projects, the federal government offers a variety of tax credits, grants, and loan programs.
How does a tax credit for energy work?An energy tax credit is a government incentive that lowers the cost of alternative energy resources for individuals and businesses. Those who meet the criteria are reimbursed when they pay their income taxes, with the credit amount either reducing the total amount owed to the IRS or being added to their refund if one is due. In 2018, 2019, 2020, and 2021, an individual may claim a credit for Congress extended the ITC in August 2022, increasing it to 30% for installations between 2022 and 2032. 10% of the cost of qualified energy efficiency improvements and the amount of the taxpayer's residential energy property expenditures paid or incurred during the taxable year (subject to a $500 overall credit limit).To learn more about energy work, refer to:
https://brainly.com/question/22236101
#SPJ4
help asp please BRAINLIEST
Answer:
Zirconium
manganese
potassioum
5- period
Explanation:
i am in chemistry rn and am learning this stuff so i hope this helps
A DRAWBACK of living in a
group is . . .
A. more likely to be eaten by predators.
B. having to look out for yourself.
C. being less obvious to predators.
D. increased competition for food and mates.
Answer: D
Explanation:
The drawback of living in a group is the increased competition for food and mates.
Option (D) is correct.
When individuals live in a group, they often have to compete with other group members for limited resources such as food and potential mates. This competition can create challenges and reduce the availability of resources for each individual within the group.
Living in a group can have advantages, such as enhanced protection against predators (option C) and increased vigilance through cooperative behavior (option B). However, the drawback arises from the fact that resources within an environment are finite, and when individuals live in close proximity, they must compete for those limited resources.
This competition can range from competing for access to food sources to competing for mating opportunities. Individuals within a group must invest time and energy in acquiring and defending resources, which can lead to increased stress, lower reproductive success, and potential conflicts within the group.
Thus, the increased competition for food and mates is a notable drawback of living in a group.
To learn more about drawback of living here
https://brainly.com/question/33268271
#SPJ2
Salts are blank and blank in nature
Salts are crystalline and ionic in nature.
Crystalline is the property of solid substances in which the components or the molecules of the the solid substances are arranges in highly ordered manner. The appearance of such substances is crystal-like. These substances have sharp melting points.
Ionic nature of substances refers to the presence of ions in any substance. The ionic substances may have a positive charge or a negative charge or they may be neutral. Ionic substances have the tendency to either gain or lose electrons. When it gains electrons it becomes negative and when it loses electrons it becomes positive. Ionic substances are good conductors of electricity.
To know more about ionic nature, here
brainly.com/question/10901285
#SPJ1
Your friend Elena beat her old weightlifting record yesterday, but today she woke up
barely able to move her legs. She says she feels a lot of pain whenever she bends her
legs. With this information, the most likely diagnosis would be:
passive muscle strain.
active muscle strain.
delayed onset muscle soreness.
acute muscle spasm.
The most likely diagnosis for this person who woke up barely able to move her legs would be delayed onset muscle soreness (option 3).
What is delayed onset muscle soreness?The expression delayed onset muscle soreness makes reference to a condition in which a person exhibits limited muscle movement, which may be due to a different condition or also due to excessive physical exercise over a short period of time.
Therefore, we can conclude that delayed onset muscle soreness may be a condition that might emerge in an individual under excessive physical exercise.
Learn more about delayed onset muscle soreness here:
https://brainly.com/question/4066480
#SPJ1
Help ASAP, its for k12 Bio
Answer:
Carbon dioxide
Explanation:
Carbon dioxide needs to be removed from the body so it diffuses from blood into alveoli.
The genotype of a dog with black coat (C) and brown eyes (E) is CCEE. The genotype of a dog with tan coat (c) and grey eyes (e) is ccee. Assume both genes are unlinked. Assume two dogs with these specific genotypes produce puppies.
What is the ratio of phenotypes in the F2 generation?
A The ratio will be 9:3:3:1
B The ratio will be 9:6:1
C The ratio will be 16:0
D The ratio will be 9:1
What is the importance of knowing the 5R techniques?
Answer:
These R's include: reduce, reuse, recycle, repurpose and finally, refuse. This is an important methodology for businesses to follow to ensure they can reduce waste and boost their recycling efforts. This ultimately lessens the amount of waste that will end up in landfill and will optimise your recycling programs.
Explanation:
hope it's help:)