BIOLOGY MIDDLE SCHOOL

Haw many bacteria can fit the period at the end of a sentence

Answers

Answer 1
Answer:

Most bacteria have sizes that vary from 0.2 to 2.0 micrometer in diameter. Thus, for average sized bacteria, about 1000 bacteria can easily fix into a period at the end of a sentence.


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HIGH SCHOOL

On rare occasions, mutations can be beneficial to an organism.
a. True
b. False

Answers

Yes, this is true, and it is actually one of the organisms driving evolution! Some organisms develop mutations that are actually beneficial (better eye-sight, for example) and they're more likely to pass those to their children that individuals without those mutations!
HIGH SCHOOL

Differentiation results in _____. A. specialized cells that perform specific functions
B. specialized cell that perform many functions
C. specialized cells that do not replicate
D. specialized cells that remain in the S phase

Answers

(A. specialized cells that perform specific functions)
A. specialized cells that perform specific functions
HIGH SCHOOL

Structurally, how do smooth muscle cells differ from skeletal muscle cells?

Answers

Skeletal muscle appear striated and smooth muscles are not striated
MIDDLE SCHOOL

Which biome covers the largest percentage of land

Answers

Your answer: Desert is the land biome that covers the largest percentage of land.

Desert/Tundra, since deserts are described as places with little precipitation, this would include places like Antarctica. It would also include the more known deserts like the Sahara.

COLLEGE

Which description applies to alternative mRNA splicing?A-protein modifications such as addition of a functional group, or structural changes such as foldingB-heritable changes in gene expression that occur without altering the DNA sequenceC-a gene cluster controlled by a single promoter that transcribes to a single mRNA strandD-mRNA modifications such as additions of a 5'-cap and 3' poly-A tail and removal of intronsE-processing of exons in mRNA that results in a single gene coding for multiple proteins

Answers

Answer:

The correct answer is E-processing of exons in mRNA that results in a single gene coding for multiple proteins.

Explanation

Splicing is the process where introns are cut out of the mRNA so only the coding parts for proteins. In this way, genes can code for many proteins, depending on how the amino-acids are arranged.

HIGH SCHOOL

Which of these diagrams best represents the steps in the formation of planets? a.) the sun is born, clouds rotate at high speeds, the clouds flatten into an elliptical disc, the planets are born. b.) the clouds flatten into an elliptical disc, the sun is born, the clouds condense, the planets are born

c.) the clouds of dusts and gases rotate at high speeds, the clouds condense, the sun is born, the planets are born

d.) the clouds of gases condense, the clouds rotate at high speeds, the clouds flatten into an elliptical disc, the planets are born

Answers

Answer: d.) the clouds of gases condense, the clouds rotate at high speeds, the clouds flatten into an elliptical disc, the planets are born

Explanation:    

Planets are formed from proto-planetary disk.

  • In the molecular cloud of dust and gases, a core is formed as the cloud condenses under its own gravity.
  • The cloud starts spinning at high speed gathering more and more mass. At the core, the temperature and pressure rises eventually startling a nuclear fusion process and a star is formed.
  • The rest of the material flattens into a proto-planetary elliptical disc from where planets are born.

Thus, the correct order is: d.) the clouds of gases condense, the clouds rotate at high speeds, the clouds flatten into an elliptical disc, the planets are born

b.) the clouds flatten into an elliptical disc, the sun is born, the clouds condense, the planets are born

:)

HIGH SCHOOL

You find a soldier lying face down. the soldier is conscious and tells you that he thinks he has injured his back. what should you do

Answers

Explanation:

A soldier lying face down with injuries his back injured must be handle with proper care and at the earliest. First of all I will look for the place at his back where he was injured and how much he was injured. And then very carefully lift him up and will look for a stretcher or gurneys and will look out for some help. I will try to arrange some vehicle and rush him to the nearest medical care.

Look for which area the deondre is hurting the most and deal with it
HIGH SCHOOL

The atomic number of fluorine is 9. How many electrons does an ion of fluorine have if it is represented by the symbol shown below? 19f1

Answers

Fluorine is a nonmetallic, diatomic gas with the symbol F and atomic number 9. Atomic number represents the number of protons in the atom. When F is neutral it means that the number of protons is equal to number of electrons. But, when F is an ion (F-), the it has more electrons (10) than protons, meaning its an anion.

Explanation:

It is known that atomic number is the number of protons present in an atom. Also, when an atom is neutral then number of protons equal number of electrons.

Hence, fluorine has atomic number 9 so there will be 9 electrons in a fluorine atom. It's electronic configuration will be .

So, in order to acquire stability fluorine atom will accept one electron from another atom. Therefore, it will result in the formation of ion.

Thus, we can conclude that there are total 10 electrons in a fluorine ion.

HIGH SCHOOL

Which of the following processes occurs in prokaryotes but not in eukaryotes? a) translation in the absence of a ribosome b) transcription and translation occur simultaneously c) post-transcriptional splicing d) gene splicing.

Answers

Answer:

b) transcription and translation occur simultaneously

Explanation:

Answer:

The answer is B

Explanation:

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