Approximately twenty-five elements _____.

Answers

Answer 1
Answer: Approximately twenty-five elements occur naturally on earth. Remaining elements either have to be synthesized or obtained through chemical reactions.
Answer 2
Answer:

Answer:

occur naturally on earth .

Explanation:


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Urine passes through the ________.A. renal hilum to the bladder to the ureter B. pelvis of the kidney to ureter to bladder to urethra C. glomerulus to ureter to renal tubule D. hilum to urethra to bladder
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Name the blood vessel that brings nitrogenous wastes to the kidneys for removal.

1. An advantage of electron microscopes compared to light microscopes is that electron microscopes A. are inexpensive and commonly used in most biology laboratories
B. allow you to view living cells, while light microscopes do not
C. have higher resolution that allows you to view smaller specimens
D. allow you to view the true colors of the specimens being viewed

2. What would be the best microscope to view living single-celled organisms in a sample of pond water?

A. Transmission electron microscope
B. Scanning electron microscope
C. Compound light microscope
D. Dissecting microscope

Answers

An advantage of electron microscopes compared to light microscopes is that electron microscopes have higher resolution that allows you to view smaller specimens

The best microscope to view living single-celled organisms in a sample of pond water is called the Compound light microscope

For better understanding, we have to understand what electron microscope and compound light microscope is.

  • The Compound Light Microscope is one of the most commonly used microscope. It is said to have a Magnifying intensity that ranges from from 40x up to 1,000x. It is often used to observe specimens that can either be dead or alive. It allows the use of dye on the slide to view tissue samples, blood, microorganisms in pond water, microscopic cells and others. It often allow light to pass through the said specimen and includes the use of two lenses to form an image.

  • Electron Microscope is simply known as a type of microscope that involves the use of a beam of electrons instead of the use of light to enlarge objects. It can enlarge up to 500,000 times it's actual size. It has much higher resolving power that is higher clarity than light microscopes due to the fact that it uses electrons instead of light.

From the above, we can say that An advantage of electron microscopes compared to light microscopes is that electron microscopes have higher resolution that allows you to view smaller specimens and

The best microscope to view living single-celled organisms in a sample of pond water is called the Compound light microscope answers are true

.

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C. have higher resolution that allows you to view smaller specimens

C. Compound light microscope

I just took this test these are both right.

What are the pros and cons of creatine

Answers

1. Creatine is scientifically proven and tested to improve the performance of athletes during intense workouts and activities. It further allows one to work harder and better with decreased regeneration time of the ATP.

2. Creatine products are very inexpensive


Which of the following brought about an increase in human populations by increasing the amount of food and medicine available and decreasing the death rate:a. industrial revolution
b. world war ii
c. the internet
d. invention of the car

Answers

A. Is the correct answer. Industrial Revolution made far-reaching developments in history. More food was produced because manual agriculture was replaced by food production through the use of machines. Because of this, people had more time to focus in more technological advancement and improve the quality of life through producing more food and mass producing medicine. Mortality rate was increased because lesser people were getting sick because of medicines becoming readily available. People who were replaced by machines had the time to take care of their families and giving them the proper nourishment.

Which of the following best shows how primary structure relates to protein function? a. High temperatures cause proteins to denature.
b. Changing one amino acid in the protein hemoglobin causes sickle-cell anemia.
c. Proteins are sensitive to changes in pH.
d. The shape and chemistry of an enzyme's active site determine its function.

Answers

A.) High temperatures cause proteins to denature.

Final answer:

The sequence of amino acids, or the primary structure, in a protein determines its shape and function. Changing one amino acid in hemoglobin results in sickle-cell anemia, showing that small alterations in the primary structure can have significant impacts on protein function.

Explanation:

The primary structure of a protein is important in determining its function. It refers to the sequence of amino acids that make up the protein chain. The option that illustrates this relationship is b. Changing one amino acid in the protein hemoglobin causes sickle-cell anemia.

This statement is valid because the amino acid sequence (primary structure) determines the shape the protein takes. In the case of hemoglobin, a single amino acid substitution causes a significant enough alteration in shape to result in the harmful condition of sickle-cell anemia, thus clearly showing the link between primary structure and protein function.

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Which process temporarily disrupts homeostasis because it increases an already high concentration of chemicals in the cell?

Answers

When cells in a body are not working properly and normally, they cause disruption in the body homeostasis.

Homeostatis is characterized as balance in the body but when there is any disturbance in the body, it breaks down the balance and cause imbalance. For example in the case of diabetes in which body fails to maintain the good amount of glucose in blood which results in imbalance the body which is why diabetic patients are asked to maintain and monitor their body sugar level to maintain homeostatis.


When the cells in your body do not work correctly, homeostatic balance is disrupted. Diabetes is a good example of this.

Selective breeding is the process of breeding plants or animals so that they inherit particular traits from their parents. What is a possible consequence of selectively breeding a crop species?

Answers

The possible consequence of selectively breeding a crop species is that the offspring will have the same traits as its parents. Selective breeding is the process of breeding of plants and animals with the sole target of inheritance of certain traits of the parent plants or animals. I hope the answer has come to your help.

Answer:

d i s a s t e r

Explanation: