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fomenos
3 years ago
7

What statement describes a controlled experiment

Biology
1 answer:
matrenka [14]3 years ago
3 0

Answer:

What is a controlled experiment? This is when a hypothesis is scientifically tested. In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled.

Explanation:

Hope it helps

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The black dots that cover strawberries are actually individual fruits. The fleshy and tasty portion of a strawberry derives from
yaroslaw [1]

Answer:

C) both an aggregate fruit and an accessory fruit

Explanation:

When several flower ovaries or receptacle of a flower with many separate carpels joins together they form aggregate fruit. Each ovary has a single ovule that converts into a seed after fertilization.

Aggregate fruit can be formed without the involvement of accessory parts called true aggregate fruit or with the involvement of additional floral parts called accessory aggregate fruit. Strawberry is also an accessory aggregate fruit because the different ovaries in the strawberry develops into achenes over the surface of flower receptacles.

4 0
4 years ago
Can anyone tell me.if these are correct?
VARVARA [1.3K]
Hello there,
Yes, all the answer that are on the picture are correct.

Hope this help,
Have a nice day!
4 0
3 years ago
A scientist extracts a molecule from a cell that includes phosphorus, a nitrogen base and a sugar. What macromolecule did the sc
rewona [7]

Answer:

D

Explanation:

The correct answer would be <u>Nucleic Acid</u>.

A typical nucleic acid has 3 components which include:

  1. A purine or pyrimidine nitrogenous base
  2. A phosphate group
  3. A 5-carbon sugar

The purine base includes adenine and guanine while the pyrimidine base includes thymine/uracil and cytosine. The 5-carbon sugar could be ribose or deoxyribose depending on if the nucleic acid is ribonucleic or deoxyribonucleic acid.

<em>The only macromolecule that contains the 3 components of the options A to D is the nucleic acid. Hence, the correct option is </em><em>D.</em>

7 0
3 years ago
Why does cellular respiration always start with glycolysis?
Mashcka [7]
This is the starting molecule for cellular respiration and an important source of energy in cells.
5 0
3 years ago
Read 2 more answers
In a factory, where would you expect to find the manager?
Maru [420]

Answer: In the control room!

Explanation:

5 0
3 years ago
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