PLEASE HELP!!!
• Humans have some...
A.) 7,000 cells
B.) I Million total cells
C.) 30-37 trillion cells
D.) 876 Quintillion cells
E.) we are not made of true cells

Answer:

oxygen carbon dioxide

Explanation:

The gases carried by red blood cells are oxygen and carbon dioxide. Details about gaseous exchange can be found below.

Gaseous exchange refers to movement of gases from one location to another in a living system.

The blood is the major carrier in the body of living organisms that posseses it. It is made up of three cells as follows:

The red blood cells also known as erythrocytes are responsible for binding to oxygen and carbon dioxide and carrying them into and out of the body respectively.

Therefore, the gases carried by red blood cells are oxygen and carbon dioxide.

Learn more about red blood cells at: https://brainly.com/question/17890844

#SPJ5

Answer:

Please see below

Explanation:

Answer:

b motor nerves is the answer

During rapid eye movement (REM) sleep, motor nerves tend to inhibit.

Hence, the correct option is b. motor nerves.

To know more about REM seep here

https://brainly.com/question/10487047

#SPJ2

Answer:

The answer to the first question is 0.8, and the second is 333

Explanation:

I took the test

1) The volume of the stock solution needed to make 2.0 L of 0.20M MgSO4 is 0.8 L.

2) Millimeters of 6.0M sodium hydroxide are required to prepare 2000mL of a 1.0M sodium hydroxide solution is 333.33 mL.

At normal temperature, sodium hydroxide is a white, crystalline substance. It has no smell and draws moisture from the atmosphere. It releases heat when combined with water, which is sufficient for the ignition of flammable materials.

It is one of the necessary components for manufacturing soap. Another name for sodium hydroxide is lye. Chemical reactions occur when lye solution is combined with fats and oils. Saponification is the name of this reaction.

The household goods that contain sodium hydroxide are drain cleansers and oven cleaners. Sodium hydroxide transforms the oil and fat-filled obstructed pipes into soap.

It is utilised in the pharmaceutical sector to make a variety of medications, including the painkiller aspirin as well as medications that lower cholesterol and prevent blood clots. Paper is produced using it in the paper industry.

To know more about Saponification, visit:

https://brainly.com/question/17744032

#SPJ1

It’s because they might not want insects to die.

They might need them for some work

E.g

Bees are used to make honey

Answer:

17 number on the diagram is pointing to the deltoid muscle

The independent variable in an experiment is manipulated by the experimenter to determine its effect on the dependent variable. Answer: a. manipulated.

In an experiment, the independent variable is the variable that is deliberately changed or manipulated by the researcher to see its impact on the dependent variable. The dependent variable, on the other hand, is the variable that is being measured or observed and is affected by the independent variable.

For example, if a researcher wants to investigate the effect of caffeine on reaction time, they would manipulate the amount of caffeine given to the participants (independent variable) and measure their reaction time (dependent variable). The independent variable is the variable that the researcher has control over and can be changed or manipulated, while the dependent variable is the variable that is being measured and affected by the independent variable.

Learn more about independent variable here:

https://brainly.com/question/29430246

#SPJ4

Cats and dogs are classified on the basis of the 7 classification system.

Similarities: At five different levels, cats and dogs belong to the same group: they both belong to the kingdom Animalia, the phylum Chordata, the class Mammalia, and the order Carnivora in the domain Eukarya.

Differences: Their species and genus are different from each other. The genus of the cat is Felis and the species is catus, while the genus of the dog is Canis and the species is familiaris.

Thus, these are the similarities and differences in the classification of a dog and a cat.

Learn more about the classification system, here:

https://brainly.com/question/2415950

#SPJ1

The light reactions produce ATP and NADPH, which are used in the Calvin cycle. The Calvin cycle produces glucose and other organic compounds, which are used in the light reactions.

For more such questions on Calvin cycle:

https://brainly.com/question/920840

#SPJ8

Science teachers consider practical sciences to be a valuable component of science education for several reasons:

Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.

Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.

Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.

Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.

Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.

Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.

Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.

Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.

To know more about science education:

https://brainly.com/question/28309499

#SPJ1

Answer:

We did not include MTF questions with either zero or four true statements because of previous ...

Answer

it's false

Explanation:

i am a teacher and this was one of my test in collage

Answer:

The human body is compared to a fine-tuned machine because a fine-tuned machine has many parts that work together so the machine can do what it is supposed to do. In the body, organ systems work together so the body can perform tasks like walking, running, and digesting food.

Explanation: Hope this helps!! Mark me brainliest!! Have a great spring break!!

Answer:

the soft parts of organisms gets decomposed when cast fossils form.

Explanation:

hope it helps!!

Answer:

they decay

Explanation:

DNA and RNA have similarities in their nucleotide composition and involvement in genetic processes. However, they differ in their sugar type, strandedness, and specific functions in protein synthesis. Understanding these similarities and differences is crucial for comprehending the fundamental mechanisms of genetics and cellular processes.

RNA and DNA are both nucleic acids that play essential roles in genetic information and protein synthesis. However, they differ in various aspects.

DNA, or deoxyribonucleic acid, is a double-stranded molecule composed of nucleotides. It contains the sugar deoxyribose and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and thymine (T). DNA carries the genetic code and serves as the hereditary material in most organisms.

On the other hand, RNA, or ribonucleic acid, is typically single-stranded and contains the sugar ribose. RNA also consists of nucleotides, but it uses uracil (U) instead of thymine as a nitrogenous base. RNA has several forms, including messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). Each form has specific roles in protein synthesis.

In terms of function, DNA stores and transmits genetic information, while RNA helps translate that information into proteins. DNA is primarily located in the nucleus of cells, while RNA is found in both the nucleus and cytoplasm.

For more such information on: genetic

https://brainly.com/question/12111570

#SPJ11

Answer:

graphite

Explanation:

graphite is a mineral resource used to make batteries

Graphite is the mineral that is frequently utilized to create batteries. So, the correct option is A.

A crystalline form of carbon that is found in nature is called graphite. Due to its special qualities, this mineral, which is exceptionally smooth and slippery, is frequently employed in a variety of applications. Due of its propensity to create a trace on paper, graphite is one of the materials that is most frequently found in pencils.

In addition to being used in pencils, graphite is also employed in lubricants, nuclear reactor moderators, batteries, and other electrical devices as electrodes. It is a good heat- and electricity-conductor and is generally chemically stable. Graphite is frequently obtained either open pit mines or underground mines and is typically found in metamorphic rocks.

Therefore, the correct option is A.

Learn more about Graphite, here:

https://brainly.com/question/28690064

#SPJ2

Your question is incomplete, most probably the complete question is:

Which mineral resource is used to make batteries?

D

negative emotions always leads to the negative nature of human being.so,sonaya shouldn't give attention to other people's concerntration and do as per her duty and all

Yes, because Soraya immediately noticed very specific emotions being portrayed. So, the correct option is D.

Emotions comprise mental states triggered by neurophysiological adjustments, which can be variously connected to ideas, feelings, behavioral reactions, and a level of pleasure or discomfort. Mood-indicative facial expressions, such as those expressing happiness, surprise, scorn, contemptuousness, sadness, fear, contempt, and wrath.

Prior to that, pertinent mental states were variously referred to as "appetites," "passions," "affections," or "sentiments." Since the 17th century, the word "emotion" has been used to refer to a physical disturbance in English as a translation of the French word "émotion."

In the case above, negative emotions always result in a negative nature in people. Soraya should therefore ignore other people's concerns and fulfil her obligations instead.

Therefore, the correct option is D.

Learn more about Emotions, here:

https://brainly.com/question/14668546

#SPJ2

Answer:

A) protons

Explanation:

the number of protons in an atom of an element determines the atoms identify

To know if two genes are linked or assort independently, a testcross can be performed followed by a chi-square test. In this fruit flies population genes coding for body color and wings shape are not linked.

Independent assortment law establishes that the alleles from two or more different genes distribute independently from each other in gametes.

Each gamete receives an allele from a gene that does not depend on nor influence another gene's allele in the same gamete. This event only occurs in independent genes. These genes segregate independently after crossing over because they are far away from each other.

Some other genes, however, are too close to each other, and they do not segregate independently. These are the linked genes. They do not exhibit an independent distribution, and they are inherited together more frequently.  

To know if two genes are linked, we must observe the progeny distribution.

However, in some cases, there can be a difference between the expected and the observed ratios which might be due to random causes.  

To know if this difference is by chance or because genes are linked, we can perform a chi-square test.

In the exposed example,

Cross: heterozygous gray, normal female with ebony, curled male

Parentals)       Gg Ss         x       gg ss

Gametes) GS, Gs, gS, gs         gs, gs, gs, gs

F1) Observed numbers

Total number of individuals: 98 + 106 + 101 + 97 = 402 flies

   Expected ratio

   Expected nubers

100%  --------------- 402 flies

25% ----------------- X = 100.5 Gg Ss flies

25% ----------------- X = 100.5 Gg ss flies

25% ----------------- X = 100.5 gg Ss flies

25% ----------------- X = 100.5 gg ss flies

The observed numbers of flies differ from the expected ones.

To see if this difference is by chance or because genes are linked, we will perform a X²- test.

Hypothesis: Genes in this population assort independently from each other.

X² = ∑ (Observed values - Expected values)² / Expected values

X² = [(98-100.5)²/100.5] + [(106-100.5)²/100.5] + [(101-100.5)²/100.5] + [(97-100.5)²/100.5]

X² = 0.062 + 0.3 + 0.002 + 0.122

X² = 0.486

Now, we need to compare this X² value with a table value and determine if the difference between the expected and observed values is statistically significant or not.

Degrees of freedom = n - 1 = 4 - 1 = 3

Significance level, α = 0.05

Table value: 7.82

X² < table value

0.486 <  7.82

The table value is greater than 0.486, so there is not enough evidence to reject the null hypothesis. Genes might be independent from each other.  

According to the Chi-square test, these genes are not linked.

You can learn more about linked genes at

brainly.com/question/12214709

#SPJ1

Answer:i don’t know

Explanation:i don’t know

Answer:

a. from the northeast to the southwest

Answer:

The answer is Body parts in different animals that have similar structure to each other

Answer:

I am secondary level student and this doesn't belongs to my coure till yet however..i have written this through google.....you may search there as well..

Explanation:

Enzyme activity occurs within a narrow range of temperatures compared to ordinary chemical reactions. As you have seen, each enzyme has a certain temperature at which it is more active. This point is called the optimal temperature, which ranges between 37 to 40C°...

Answer:

The community is made up of fish, insects, and all living organisms

Explanation:

Answer:

Explanation:

plants, animals, microorganisms, and a surrounding environment

for example, nanoparticles can serve as probes, sensors or vehicles for biomolecule delivery in cellular system.

By means of natural selection.

I think natural could be the word

Answer:

fact: cells make up everything in our body

Explanation:

Answer: without cells, who tells what could happen

Explanation: cells and tells. plz make brainliest

One other method by which recombinant DNA can be introduced into a plant is through the use of gene guns, also known as particle bombardment.

Gene guns use microscopic gold or tungsten particles coated with DNA to penetrate the plant cell walls and deliver the foreign DNA directly into the nucleus. This method has been used successfully in a variety of plant species.

Bioinformatics plays an important role in the genetic modification of plants by providing tools for the analysis and interpretation of complex genomic data. This includes identifying potential target genes, designing specific DNA constructs, and analyzing the expression and function of the introduced genes. Bioinformatics also helps to optimize plant growth conditions and improve crop yields by identifying key genes involved in plant growth and development.

Learn more about bioinformatics, here:

https://brainly.com/question/31762112

#SPJ1

Answer: THE ANSWER IS A

Explanation: ITOOK THE TEST

Answer:

Mushrooms are classified under the categories of "Genus" and "Species" in taxonomy. The genus refers to a group or category that includes closely related species, while the species represents a specific type or kind of organism. So, the correct options for mushrooms would be "i. Genus" and "iv. Species."

The acceleration of the car is 2 m/s².

The average velocity of the car is 2 m/s.

The equation acceleration = (final velocity - beginning velocity) / time can be used.

Given:

Initial velocity (u) = 0 m/s (since the car starts from rest)

Final velocity (v) = 20 m/s

Time (t) = 10 s

Using the formula, we can substitute the values:

acceleration = (20 m/s - 0 m/s) / 10 s

acceleration = 20 m/s / 10 s

acceleration = 2 m/s²

Therefore, the acceleration of the car is 2 m/s².

You can use the following equation to determine the average velocity: average velocity = total displacement / total time.

The initial position and the final position are identical since the automobile begins at rest. As a result, the displacement and the ultimate position are equal.

Given:

Displacement = 20 m

Time (t) = 10 s

Using the formula, we can substitute the values:

average velocity = 20 m / 10 s

average velocity = 2 m/s

Therefore, the average velocity of the car is 2 m/s.

Learn more about substitute here : brainly.com/question/26094713

#SPJ1

Answer:

Some body parts, for example, such as muscles, red blood cells, nails, skin, and hair, wear out and/or they die, and therefore they are constantly replaced. To replace the worn out parts and dead parts, there is need for cell division.  Other body parts last longer. For example, the liver will last as long as a person lives, and in fact liver failure is one way a person will die. Liver cells are normally not replaced, and therefore there is normally no cell division in the liver. Cell division in these body parts would simply make them bigger and bigger and that may result in illness or even death. In fact, cancer cells are cells that should not be dividing but they continue to divide non-stop because something went wrong.

Explanation:

Some body parts, for example, such as muscles, red blood cells, nails, skin, and hair, wear out and or they die, and therefore they are constantly replaced.

To replace the worn out parts and dead parts, there is need for cell division.  Other body parts last longer. For example, the liver will last as long as a person lives, and in fact liver failure is one way a person will die. Liver cells are normally not replaced, and therefore there is normally no cell division in the liver.

Cell division in these body parts would simply make them bigger and bigger and that may result in illness or even death. In fact, cancer cells are cells that should not be dividing but they continue to divide non-stop because something went wrong.

Therefore, Some body parts, for example, such as muscles, red blood cells, nails, skin, and hair, wear out and or they die, and therefore they are constantly replaced.

Learn more about Cell division on:

https://brainly.com/question/13312481

#SPJ6