when a single cell of E. coli reproduces it first duplicates it's dna next the cell elongates as each copy of dna is pulled toward opposite ends of the cell the membrane then pinches inward, dividing the cytoplasm into two halves and producing two daughter cells what is true about these daughter cells​

Answer:

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Answer:

Enzymes are used in the food, agricultural, cosmetic, and pharmaceutical industries to control and speed up reactions in order to quickly and accurately obtain a valuable final product. Enzymes are crucial to making cheese, brewing beer, baking bread, extracting fruit juice, tanning leather, and much more.

Explanation:

yessir

Answer:

12 pairs

mandible

Explanation:

Selective breeding dangers reduced genetic diversity can result in certain insects or diseases attacking, which could be quite devastating.  Thus, option B is correct.

Selective breeding can contribute to a large reduction in the genetic diversity of farmed populations, endangering long-term evolutionary progress and limiting populations' ability to adjust to environmental changes.

Unknowingly selecting uncommon illness genes as part of a desirable characteristic might cause difficulties with particular organisms, such as the high prevalence of deafness in Dalmatian dogs.

Genetic diversity is typically reduced by selective breeding, since only a few individuals are employed to produce enormous numbers of offspring. The population's survivability may be impacted by this.

Therefore, selective breeding will most likely decrease genetic diversity.

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Answer:

Helium and carbon dioxide

The elements that are not common in human body are carbon dioxide and helium. The correct options are B and E.

A chemical element is a type of atom with a specific number of protons in its nucleus, including the pure substance made up entirely of that species.

Chemical elements, unlike chemical compounds, cannot be broken down into simpler substances by any chemical reaction.

The human body is made up of only six components: oxygen, hydrogen, nitrogen, carbon, calcium, as well as phosphorus.

Sulfur, potassium, sodium, chlorine, and magnesium make up about 0.85% of the remaining mass. All 11 of these elements are necessary.

Carbon dioxide and helium are elements that are not found in the human body.

Thus, the correct options are B and E.

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Answer:

Sunflowers require full sun exposure, they are heliotropic, which means that the movement of the flower is towards the direction of the sun.

Answer:

Mitosis: 46

Meiosis: 23

Explanation:

Answer:

Tectonic plate motion can directly result in VOLCANIC ERUPTIONS.

Many volcanoes erupt due to movement in tectonic plates, and furthermore, most volcanoes are located adjacent to tectonic plates. (For example, the ring of fire around the Pacific Plate)

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Answer:

B. Earth's rotation around its axis

Explanation:

Answer: A

Explanation: Because I said so.

Answer: The answer is C

Explanation:

During the process of protein synthesis, the best explanation for what is occurring at the arrow is as follows:

Protein synthesis may be defined as a biological process through which cells make proteins in order to accomplish metabolic functions that facilitate the survival of living organisms. The process of protein synthesis terminates with the help of two stages. They are as follows:

Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. While the process of translation acquired the transfer of genetic instructions from the mRNA to the sequence of amino acids in order to form proteins. This takes place in the cytoplasm of the cell.

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Answer:

a

Explanation:

The structure of sickle cells differs from normal RBCs because of the gene mutation that affect the protein structure.

Sickle Cells:

These cells look like a crescent moon. They are unable to transport oxygen. This cause anemia in the patient.

It is an inherited disorder in which point mutation in the lead to the different protein structure. This results in the sickled RBCs.

Normal blood cells are round in shape and able to transport oxygen.

Therefore, the structure of sickle cells differs from normal RBCs because of the gene mutation that affect the protein structure.

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Answer:

Mucous membranes

Explanation:

The epidermis (external) and mucous membranes (internal) represent the first non-specific barriers that act against invading pathogens and harmful substances. The mucous membranes separate the external environment surrounding the mucous cells from the body's internal environment. These membranes are considered as selectively permeable barriers that act to prohibit the passage of pathogenic microorganisms (e.g., bacteria) and harmful agents (toxic chemical substances).

Answer:ITS B GRAVITY PULLS AN INWARD FORCE!

Answer:

Answer A

Explanation:

Gravity keeps things on the ground meaning the gravitational force is going down.

Answer:

Independent: Purposely altered

Dependent: Changes with respect to the independent being altered

Controlled: Never changes

Explanation:

An independent variable is a variable in which does not rely on other pieces/variables of an experiment to assume a value. In other words, it does not change when other variables change. However, it can be changed intentionally by the scientist.

A dependent variable is a variable in which its change in value relies on other pieces/variables of an experiment to assume a value. So, if the indeoendent variable is changed, the dependent variable will change as well. The opposite is not true though - if the dependent variable changes (for whatever reason), the independent variable hasn't necessarily been changed.

A controlled variable is a variable that stays CONSTANT throughout an experiment. It is never changed, and nothing will change it. An example of a control variable is the number of participants in a study: no more participants are being added, and no participants are being removed. The number of participants remains STATIC throughout the study.

Answer:

Observational study is when you observe your subject and take more notes rather that writing down quantitative data. Meanwhile, a controlled experiment is more quantitative.

Explanation:

There is no experimental proof of the lamarckism. New organs are not formed in organisms by their wish or requirement. 3.It is not necessary that an the acquired characters transmit into new

Answer:

Weaknesses are traits may stay around for longer that what their needed and Strengths are we adapt to our needs.

Explanation:

Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.

I took the quiz and said this, I got it it right!

Explanation:

Deoxygenated blood enters the right atrium passes through the right ventricle and then goes the lungs through the pulmonary artery.

It becomes oxygenated and enters the left atrium through the pulmonary vein

GO AWAY!!!!!!!!!!!!!

Answer:

By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.

Answer:

Hope its help you

if wrong then sry

Answer:

Explanation:

the number of moles of solute per liter of solution. molar concentration

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of a solution. Explanation: To get the molarity, you divide the moles of solute by the liters of solution. Molarity=moles of solute liters of solution. For example, a 0.25 mol/L NaOH solution contains 0.25 mol of sodium hydroxide in every litre of solution.

Answer:

A

Explanation:

Answer:

Equus quagga

Explanation:

I hope this helps!!

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P.S Remember the Name!!!

Answer:

AUAUCGCAUGCCGAUA

Explanation:

Answer:

3/4 (3 out of 4) of the genotypes are deaf. 3/4 is also equal to 75%. So 75% of the offspring produced will be deaf.

Explanation:

The way the punnet squares work is the top allele on the left combines with the left allele on the top, the top allele on the left is combined with the top allele on the right, the bottom allele on the left is combined with the top allele on the left, the bottom allele on the left is combined with the top allele on the right. I hope this makes sense

Answer:

the distances are much greater

Explanation:

because stars have their own light and energy so they dont need to orbit planets or other stars.Planets dont have their own light so they need to orbit a star and a star is usually orbited by multiple planets (sorry for my bad english)