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3 years ago

Eliana cuts a watermelon into several slices. Which statement best describes the physical change?

Biology

2 answers:

Nat2105 [25]3 years ago

9 0

A. The arrangement of particles within the watermelon changed.

Nookie1986 [14]3 years ago

7 0

the answer is a in know because i did this one

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You are working in a molecular biology lab and, unbeknownst to you, your lab partner left the foreign genomic DNA you are planni

fredd [130]

Answer:

B There will be blue colonies only

Explanation:

This screen in called the blue white screening. This is a rapid test that allows scientist to check for their insert of choice in the colonies at a glance. The concept is that where the insert is located the lac Z gene in the vector is interrupted and therefor Xgal, a reporter can be produced. Where there are blue colonies being formed the plasmid has self-ligated and the lac Z gene is not interrupted and the X-gal can be formed rendering a blue color.

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3 years ago

Please answer this one short question i need helppppp one science question

vladimir1956 [14]

I think it’s b, I’m not sure

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3 years ago

Read 2 more answers

A first-hand source such as an experiment is called a _____.

IrinaK [193]

A first-hand source such as an experiment is called a primary source.

A primary source is where you can share new information or report on what you have discovered. Some primary sources are research data, interviews, audio recordings, and autobiographies.

A secondary source is where you describe and discuss about the primary sources. They are used to collect and gather primary source information. Some secondary sources are textbooks, review articles, and scholarly books.

A tertiary source is a source about summaries. A tertiary source can be used to look up information or get an overview about what it is you are wanting to know. Some tertiary sources are dictionaries, handbooks, encyclopedias, Wikipedia, and guidebooks.

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3 years ago

Is a cytoskeleton in an animal, plant or both cells?

deff fn [24]

Plant cells since animal cells are similar to ours(human cells) and we don’t have cytoskeletons

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3 years ago

Use the copy of the Periodic Table of Elements below to obtain information about each element in the Mystery Clues list. Record

Sergeu [11.5K]

Answer: nitrogen , CALCIUM , nitrogen , Carbon-14 , Mercury , Boron

Explanation:

A. nitrogen

The atomic number of nitrogen is 7. How many protons, neutrons, and electrons make up an atom of nitrogen-15? Socratic.

B. CALCIUM

CALCIUM - I have 20 neutrons and am found in your teeth and bones

C. nitrogen

The atomic number of nitrogen is 7. How many protons, neutrons, and electrons make up an atom of nitrogen-15? Socratic.

D. Carbon-14

Carbon-14 atoms have two extra neutrons, giving them a total of 8 neutrons. Carbon-14 has an atomic mass of 14 ( = 6 protons + 8 neutrons).

E. Mercury

Mercury is a chemical element with symbol Hg and atomic number 80.

F. Boron group element, any of the six chemical elements constituting Group 13 (IIIa) of the periodic table. The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and nihonium (Nh).

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3 years ago