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2 years ago

Does hot water tend to rise or sink? Explain.

Biology

1 answer:

Mademuasel [1]2 years ago

5 0

Answer:

When fluids (liquids and gases) are heated, they expand and therefore become less dense. Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water.

Explanation:

When you heat up water, the water molecules start moving around faster and faster. ... So hot water is less dense than cold water. When you put the two together with the hot water on the bottom, the hot water rises to the top.

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Why do adult urochordates (tunicates) lack notochords, even though larval urochordates have them? Larvae use notochords to _____

kirza4 [7]

Answer: Option A

Explanation:

A tunicate is marine invertebrate animal which is a part of chordates. They have notochords and dorsal nerve chord. The subphylum of the organism is called as Urochordata.

The adult urochordates lack notochord but the larval stage of the urochordates have notochord. This is because it helps in swimming of the organism which is required only at the larval stage.

The adult stage of the tunicates is sessile and they do not swim so they do not require notochord.

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3 years ago

What is the name of the enzyme used to make rna nucleotides

Likurg_2 [28]

<h2>RNA Polymerase</h2>

Explanation:

RNA polymerase, a chemical in the cell, is answerable for making mRNA from the right quality. RNA polymerase is like DNA polymerase, yet it makes a RNA strand as opposed to a DNA strand. The promoter region of DNA Helix is attached by RNA polymerase.

It pulls in nucleotides that supplement those on the DNA strand containing the gene of interest. RNA polymerase duplicates one strand of DNA to make a stretching bit of singlestranded mRNA. RNA polymerase makes the mRNA strand in what is known as the 5' to 3' course.

8 0

3 years ago

How can I successfully extract the dna from a strawberry in an experiment

kondaur [170]

Answer:

Chill the alcohol in the freezer.

Remove the green stems from the strawberries and add to the bag. Squish the strawberries into a pulp.

Add 1 tablespoon of dish soap, a teaspoon of salt, and 1/3 of a cup of water to the bag. Mix.

Explanation:

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6 0

3 years ago

Read 2 more answers

If the nucleotide sequence on one side of a DNA molecule is CCTAGCT, then the sequence on the complementary strand of DNA will b

valentinak56 [21]

Answer:GGATCGA

Explanation:

The complementary double helix of the DNA are antipararell to each other.

Chargaff's rule state that Adenine always pairs with thymine (double bond) and Cytosine always pairs with guanine (triple bond).

Therefore if a DNA molecule is CCTAGCT, then the sequence on the complementary strand of DNA will be GGATCGA as written below

5' CCTAGCT 3'

3' GGATCGA 5'

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3 years ago

Look at attached image, which gases are in kept in the different plants<br>

ahrayia [7]

the gases that kept different planta is A

6 0

2 years ago