The number 0.00243 has how many significant digits?
a. 3
b. 4
c. 5
d. 6

Answers

Answer 1

Answer: The number 0.00243 has 3 significant digits.

Answer 2

Answer: The correct answer is option B. 0.00243 has three significant digits. This is because for a decimal number which is less than 1, all the digits except the leading zero after the decimal point are considered to be insignificant. Thus, the two zeroes after the decimal point are insignificant.Therefore, the remaining three digits i.e. 243 are the significant digits.

Related Questions

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What pigment traps the energy?
A scientist thought he may have discovered a new plant compound that would lower blood pressure in people. In his first experiment, he injected one hundred mice with the compound and found that the blood pressure in ninety-five of the treated mice was not affected. However, all of the mice seemed to grow at a faster rate then the control group. Which statement describes the most likely outcome of this investigation?a. The knowledge gained will lead to further experimentation that could potentially result in a new use for the drug.b. He will develop a second experiment to find a way to make the drug successfully lower blood pressure in mice.c. The data he collected will be used in new investigations to determine why certain people are taller than others.d. He will use these results to conclude that the drug will most likely lower blood pressure in five percent of people.
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2) We wish to test if a certain vaccine developed for a disease is effective ornot. What is the best way to do this?
A. Vaccinate 100 animals and expose all 100 to the disease.
B. Vaccinate 100 animals and expose 50 of them to the disease.
c. Vaccinate 50 animals, do not vaccinate 50 other animals, and expose all 1
to the disease.

Answers

Answer:

The right and most effective answer according to me is c

Which fungal structure produces enzymes that break down food?

Answers

Hyphae fungi

When the spore lands and germinates in the orange, a small tubular extension starts to grow. This new cell will from a strand of hyphae, complete with a nucleus, organelles and cytoplasm. The tube is similar in structure to a straw, but instead of plastic, its firm cell wall or exterior is made of a strong substance called chitin.

The hyphae can now get to work on a piece of fruit, hyphae are crucial to the absorption of nutrients because they can contain a secret weapon: digestive enzymes. When the enzymes are released, they break down food so that its molecules can be easily absorbed. As the hyphae take in their nutrients, they add new cells and extend upward.

Describe the structure of the cell membrane. how does the cell membrane affect the contents of the cell?

Answers

the cell membrane is made of a protein layer that is sandwiched between 2 phospolipid layers. It has pores that allow selective passage of substances in and out of the cell.

Cells such as verve and muscle cells contain more mitochondria than cells. Why?

Answers

A. Nerve and muscle cells use more energy because keep in mind the mitochondria is the powerhouse of the cell and provides it with enegy

A new drug is discovered for the treatment of thyroid cancer. Which is a logical next step of the scientific method after the discovery has been successfully tested?

Answers

clinical trials would be the next steps

to go to the clinic, or hospital would be the next step of what to do.
Hope that this helps you! =)

What structures do microalgae elodea maple leaf and root hair have in common

Answers

Answer:

They have a nucleus, vacuole, cell wall and membrane.

Explanation:

microalgae elodea maple leaf and root hair are eukaryoti organisms and they have nucleus, cell wall and membrane in common and these structures perform different functions.

Nucleus is a membrane bound organelles that contain the DNA or genetic material . It is majorly found in eukaryotic organisms.

Vacuole is a membrane bound organelles that function in digestion, ingestion, excretion of waste and storage.

Cell wall is a structure that give shape, support and protection to cells.

Membrane is a structure that separate the internal of the cell from it outside environment and it give protection to the cell..

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