How small are the cells that live in and on the human body

Answers

Answer 1

Answer:

The size of human cells varies from one to another, but they are all very small. Even the largest of all, the fertilized egg, is so small that it is not visible without the need for special instruments.

Explanation:

Answer 2
Genetics is the study of genes and tries to explain what they are and how they work. Genes are how living organisms inherit features or traits from their ancestors; for example, children usually look like their parents because they have inherited their parents' genes. Genetics tries to identify which traits are inherited and to explain how these traits are passed from generation to generation.

Some traits are part of an organism's physical appearance, such as a person's eye color, height or weight. Other sorts of traits are not easily seen and include blood types or resistance to diseases. Some traits are inherited through our genes, so tall and thin people tend to have tall and thin children. Other traits come from interactions between our genes and the environment, so a child might inherit the tendency to be tall, but if they are poorly nourished, they will still be short. The way our genes and environment interact to produce a trait can be complicated. For example, the chances of somebody dying of cancer or heart disease seems to depend on both their genes and their lifestyle.

Genes are made from a long molecule called DNA, which is copied and inherited across generations. DNA is made of simple units that line up in a particular order within this large molecule. The order of these units carries genetic information, similar to how the order of letters on a page carries information. The language used by DNA is called the genetic code, which lets organisms read the information in the genes. This information is the instructions for constructing and operating a living organism.

The information within a particular gene is not always exactly the same between one organism and another, so different copies of a gene do not always give exactly the same instructions. Each unique form of a single gene is called an allele. As an example, one allele for the gene for hair color could instruct the body to produce much pigment, producing black hair, while a different allele of the same gene might give garbled instructions that fail to produce any pigment, giving white hair. Mutations are random changes in genes and can create new alleles. Mutations can also produce new traits, such as when mutations to an allele for black hair produce a new allele for white hair. This appearance of new traits is important in evolution.

Related Questions

answer the question on the attachment

Answers

Answer:

Chemical Energy-Electrical Energy-Mechanical Energy

Explanation:

I took the test  and got 100%

What features do skeletal muscle cells have that you can see under a microscope!
What’s the correct answer answer asap for brainlist

Answers

Answer:

skeletal muscle looks striped or "striated" – the fibres contain alternating light and dark bands (striations) like horizontal stripes on a rugby shirt. In skeletal muscle, the fibres are packed into regular parallel bundles.

Answer:

Long

Explanation:

Its the Longest one

Question is in image provided

Answers

Explanation:

yur answer is number D

:)

Need some help!! I think I got first answer done.

Answers

Answer:

can u scan it for better view?

Explanation:

Which of the following statements are true about the group of biomolecules known as nucleic acids?

CHECK ALL THAT APPLY!

A.Both DNA and RNA contain the same six nitrogenous bases

B.DNA is double stranded while RNA is single stranded

C.RNA is an example

D.Nucleic acids are composed of nucleotides arranged in a certain sequence

Answers

Answer:

D. Nucleic acids are composed of nucleotides arranged in a certain sequence

B.DNA is double stranded while RNA is single stranded

Explanation:

Which of the following statements is NOT true of the cerebellum?
1. The cerebellum integrates visual and auditory memory.
2. The cerebellum coordinates voluntary muscle action.
3. The cerebellum is located at the base of the brain near the brain stem.
4. The cerebellum helps to regulated balance and posture.

Answers

Explanation:

Number 1 is not true because the temporal lobe controls visuals

Water is a nonpolar molecule?

Answers

Explanation:

The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).

ill in the Blank Question
You push a book and it leaves your hand then slides along the table. the book covers a total distance of 1m the distance that you use to determine the work that you did is?

Answers

The distance used to determine the work is less.

What is work done?

When an external force drives an object a specific distance, it transfers a certain amount of energy to the object, which is known as work. The amount of work performed on an object is a measure of the energy transmitted to it. Work is defined as the sum of the force component acting in the displacement direction and the displacement magnitude (d).

A measurement of the energy that is transferred when an object is moved over a distance by an external force, at least some of which is applied in the direction of the displacement.

The output of a force is calculated by multiplying its component acting in the displacement's direction by its magnitude.

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Fatty acids that are broken down for energy production are utilized for which aspects of cellular respiration? Choose all that apply.

Check All That Apply

Fermentation
Glycolysis
Pyruvate oxidation
Citric acid cycle
Electron transport chain


REAL ANSWERS ONLY! NO LINKS!

Answers

Answer:

glycolysis

Explanation:

glycolysis is the first way involved in cellular respiration.

The correct option is B. Fatty acids that are broken down for energy production are utilized for which aspect of cellular respiration is glycolysis.

What is glycolysis?

Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. Since the majority of species alive today still use glycolysis, it is an old metabolic route that developed long ago.

Glycolysis is the initial step in the process of cellular respiration in organisms. However, many anaerobic organisms—organisms that do not use oxygen—also contain this route since glycolysis does not require oxygen.

Therefore, The correct option is B. Fatty acids that are broken down for energy production are utilized for which aspect of cellular respiration is glycolysis.

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Given a piece of metal with a mass of 124 grams and a volume of 21 cubic centimeters (cm^3) what is its density? Use the correct formula to obtain your answer. You may work on a separate piece of paper.

13.6 g/cm^3
88 g/cm^3
5.9 g/cm^3
0.21 g/cm^3

Answers

The density of the piece of metal given that it has a mass of 124 grams and a of volume 21 cm³ is 5.9 g/ cm³

How to determine the density

Density is defined as mass per unit volume i.e

Density = mass / volume

With the above formula, we can obtain the density of metal as illustrated below:

Mass of metal = 124 gramsVolume of metal = 21 cm³Density of metal =?

Density = mass / volume

Density of metal = 124 grams / 21 cm³

Density of metal = 5.9 g/ cm³

Thus, the density of the metal is 5.9 g/ cm³

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Which of the following is characteristic of a learned experience?
A. A learned experience can be biased.
A learned experience is based on fact.
C.
A learned experience is learned from things previously read or studied.
D. A learned experience is learned from formal education.
Please select the best answer from the choices provided
A
OD

Answers

Answer:

hi im akira bye dqwrrhtus6uiakykukrkr

Explanation:

iiyjdksoku

Which statement best describes an environmental consequence of sustainable waste management?

Answers

This can be as simple as providing recycling and compost bins along with your regular trash and offering a service to properly dispose of this waste.

Poor waste management contributes to climate change and air pollution, directly affecting many ecosystems and species. Considered the last resort in the waste hierarchy, landfills release methane, a very potent greenhouse gas linked to climate change.

Sustainable waste management is important. This enables continued socio-economic development and protects the environment and health. It paves the way for developments that meet today's needs without jeopardizing the development of future generations. One of the first causes of poor waste management is lack of public awareness, and more specifically, lack of awareness and bad attitudes within companies.

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Pls help me all u have to do is tell me what is wrong in the cell that is causing this to happen

Answers

Plasmolysis is the process of the protoplasm of a plant cell contracting or shrinking, which is brought on by the cell's loss of water.Osmosis can lead to outcomes like plasmolysis, which is a rare occurrence in nature.

What causes cells to stop growing?

According to research coauthor and geneticist at Harvard Medical School Stephen Elledge, cell death — the stopping of cells from growing and dividing — is caused by extreme stress and genetic damage.Specifically because to water pressure, plant cells maintain their form.Water is actively pumped into plant cells to maintain their rigidity.The cellulose and pectin-based cell wall's durability prevents the cells from bursting under pressure.All living cells need a little chemical known as adenosine triphosphate (ATP) as fuel, which is one of the earliest and most persistent lessons that students learn in biology class. Numerous genes play a role in regulating cell division and development.The cell cycle is the orderly, sequential process by which a cell duplicates itself.This process is tightly regulated to guarantee that the DNA of a dividing cell is accurately duplicated, that any DNA errors are corrected, and that each daughter cell obtains a complete set of chromosomes.Checkpoints, also known as restriction points, are locations in the cell cycle when specific genes can check for issues and stop the cycle for repairs if something is wrong. A cell may self-destruct if there is a DNA mistake that cannot be corrected (apoptosis).Apoptosis is a process that occurs frequently throughout life to help the body get rid of cells that are no longer functional or that are unnecessary.A type of white blood cell known as a macrophage dissects and recycles cells that have undergone apoptosis.Apoptosis plays a critical function in the development of the embryo and the maintenance of adult tissues, as well as protecting the body by eliminating genetically compromised cells that could cause cancer. Diseases like cancer can result from an alteration in the cell cycle's regular regulation.Cells can divide randomly and collect genetic mistakes that can result in a malignant tumor when the cell cycle is out of control.

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What do organisms contain?

Answers

Answer:

all organisms contain one or multiple cells

Which of the following phases of the eukaryotic cell cycle occurs outside of mitosis?
Metaphase
Telophase
Interphase
Prophase
Anaphase

Answers

Answer: Interphase

Explanation:

Complete the following five sentences about enzymes in by adding a word or phrase to the box to complete the sentence. a. Enzymes are a __________ macromolecule and are made of amino acids. b. Enzymes ___________ the activation energy, or the amount of energy needed for a chemical reaction to occur. c. Enzymes do this by bringing molecules ____________ and hold them in a specific orientation, allowing two molecules to form a chemical bond that would not normally form. d. Enzymes recognize and interact with ___________molecules. Lactase will recognize lactose, but not other sugar molecules. e. During the reaction, enzymes themselves are not permanently ____________ and the enzyme is free to catalyze more reactions with oth

Answers

a. Enzymes are a protein macromolecule and are made of amino acids.

b. Enzymes lower the activation energy, or the amount of energy needed for a chemical reaction to occur.

c. Enzymes do this by bringing molecules together and hold them in a specific orientation, allowing two molecules to form a chemical bond that would not normally form.

d. Enzymes recognize and interact with the specific molecules

e. During the reaction, enzymes themselves are not permanently used up and the enzyme is free to catalyze more reactions with others.

What are enzymes?

An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself not completely used up during the process.

Enzymes lower the activation energy, or the amount of energy needed for a chemical reaction to occur.

In conclusion,  Enzymes are proteins and they act as catalysts in a cell. They speed up the rate of chemical reactions.

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Which human activity would decrease the biodiversity of a wetland¹?

Answers

Answer:

a is the correct answer Human uses of wetlands, such as drainage for agriculture and filling for industrial or residential development, can impose irreversible impacts to wetlands.

The human activity that would decrease the biodiversity of a wetland is adding a drainage system. The correct option is 1.

What is biodiversity?

Biodiversity refers to the diversity of life on Earth, which includes species diversity, genetic diversity, and ecosystem diversity.

It is critical for ecosystem health and function, as well as the services they provide, such as air and water purification, nutrient cycling, and climate regulation. Biodiversity has cultural, recreational, and economic significance.

The extinction of species, the loss of genetic resources, and disruptions to ecosystem services are all examples of how biodiversity loss can harm ecosystems and human well-being.

Adding a drainage system would reduce a wetland's biodiversity by altering the natural water flow and affecting the habitat of various species, resulting in a decrease in their population and diversity.

Thus, the correct option is 1.

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Do isomers exist in double sugars compare sucrose and maltose

Answers

Sucrose, lactose and maltose are isomers, they have the same chemical formula, C12H22O11, but different structures.

Need help with this bio

Answers

Answer:

B

Explanation:

it should be B. yup ..............

The answer is nucleus

A tropic hormone targets and stimulates an endocrine organ or gland to release another
hormone. Which of the following answers correctly connects the tropic hormone with its target
organ and the subsequent hormone released?
a. Thyrotropin releasing hormone (TRH) - posterior pituitary-thyroid stimulating
hormone (TSH)
b.
Luteinizing hormone (LH) - testes - testosterone
c. Corticotropin releasing hormone (CRH) - posterior pituitary-adrenocorticotropic
hormone (ACTH)
d.
Growth hormone releasing hormone - hypothalamus-growth hormone
e. All of the above answers are correct
f. Only answers A, B, and C are correct

Answers

Only answer A, B, and C

Question in the picture!

Answers

Explanation:

Honestly only know a few, but that's just the first four, although this may not be much hope it helps you out a bit.

A muscular organ about the size of your first.

Located behind and slightly left of your breastbone.

Pumps blood through a network of arteries, veins, and capillaries.

Call the cardiovascular system.

help asap!! will give branliest and most points for whoever answers correctly!

Answers

it’s d i took this test

Which organism has an internal skeletal system made out of bones

Answers

All vertebrate animals, such as fish, amphibians, reptiles, birds, and mammals, have internal skeletons.

Which parts make up internal skeletons?

Movement is made possible by the attachment of muscles to an internal, mineralized endoskeleton that is stiff and mineralized. The human skeleton, which is an endoskeleton, is made up of the axial and appendicular skeletons.

Cows have distinct axial, appendicular, and splanchnic bones. The axial skeleton is made up of the head, ribs, and spinal column. The cranium is longer than a dog's, but otherwise similar. From the base of the head to the end of the body, the vertebral column runs horizontally.

Their skeletons enable movement while supporting and protecting them.

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Explain why catalase works differently in different conditions. Give specific examples
and relate your answer to the structure of proteins.

Answers

Like many enzymes, catalase has effects that are regulated by the temperature of the environment. The structure of catalase and the hydrogen bonds it is intended to break are both impacted by temperature. The hydrogen bonds between molecules of hydrogen peroxide relax as temperature rises toward the optimal point, facilitating catalase's reaction with the molecules. The enzyme denatures and its structure is upset if the temperature rises above the ideal level.

For example, The ideal temperature for catalase in human is 37 degrees Celsius.

What is catalase?

Hydrogen peroxide is broken down into water and oxygen by the common enzyme catalase, which is present in almost all living things exposed to oxygen. It is a crucial enzyme for defending the cell against reactive oxygen species' oxidative damage.

Hence the correct answer is given.

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there are _ components to the control mechanism of homeostasis

Answers

Answer:There are three components to the control of mechanism of homeostasis.

Explanation:The three components are receptor,integrating center,and effector.

Examine the chart shown below.

genotype phenotype
BB black fur
Bb black fur
bb brown fur


What does the phenotype represent?
A.
the physical appearance or expression of an organism's alleles
B.
the combination of alleles that an organism possesses
C.
the crossing-over of genetic traits
D.
only the recessive form of a gene

Answers

A. a phenotype is the physical part of an allele

As discussed in this section, angiosperms often coevolve with animals. Sometimes, the corresponding adaptations enable certain species of a flowering plant to be pollinated exclusively by a certain species of animal. How might such exclusive relationships boost a plant's reproductive success?
Can you think of any disadvantages?​

Answers

According to a generally recognised theory, insect pollination dominated angiosperm pollination throughout the Early Cretaceous, and by the Mid-Cretaceous, specialisation had increased.

Why are angiosperms so successful due to their adaptations?

Two unique reproductive structures that angiosperms have evolved are flowers and fruits. Flowers is the flower's primary purpose. The ovule and growing embryo inside a receptacle are likewise shielded by flowers. The fruit's purpose is to disperse seeds.

Flowers draw animal pollinators with their vivid hues, potent fragrances, and delicious nectar. Flowers give pollinators nectar in return for their pollination. Grass species like domestic grasses are among of the angiosperms that have evolved most recently. They produce a lot of huge, nutritious seeds that may be eaten.

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3. Describe the overall trend of the graph.

Answers

Here the graph is showing increasing trend  i.e;  the population is increasing year-on-year. Follow the trend from left to right and state whether it is going up, down, or staying the same to explain the graph.

A trendline is a line drawn above or below pivot highs or lows to indicate the price's primary direction. Support and resistance in any time frame are represented visually by trendlines. They depict patterns during times of price contraction and show the direction and pace of the price.

Your best chart for displaying trends over time is a line chart. The most effective visual display for highlighting change over time is a line chart. Think about two variables, one on each axis: vertical and horizontal.

Three main graph types used to visually depict data in biology are: The scatter plot, Linear graph , a bar graph.

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what would most likely happen if there were no condensation stage in the water cycle ?

water could not convert from gas to a liquid

water could not convert from liquid to a gas

water could not convert from transpiration to evaporation

water could not convert from evaporation to transpiration

Answers

Answer:

The Answer will be D) water could not convert from evaporation to transpiration

Explanation:

If creating a complete Water Cycle process...

_____________________________________

First: Condensation

Second: Precipitation

Third For Example a Mountain: Snowmelt Runoff

Fourth: Surface Runoff

Fifth: Evaporation

Six: Transpiration

All Repeats Back to 1 After Reading to Step 6

____________________________________

From this point conclusion...

Then water would mostly not convert from evaporation to transpiration since it can't remake back to Condensation or in terms making Condensation.

materials move down a concentration radeient
the methods cells use to materials with out expanding energy

Answers

Materials move down a concentration gradient  is called a concentration gradient and the methods cells use to materials with out expanding energy is called Passive transport.

How can you move substances down the concentration gradient without using energy?

Passive transport tells  more about the shifting of substances down a concentration gradient and does not need any issue of energy consumption.

A concentration gradient is simply a stretch of space across which a substance's concentration alters. Substances will naturally travel down concentration gradients, from a higher concentration point  to a place or area that is known to be lower concentration area.

Therefore, substance diffuses over a membrane through passive transport as it diffuses along its concentration gradient without requiring any energy from the cell.

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See full question below

materials move down a concentration gradient and the methods cells use to materials with out expanding energy is known as what?

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