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Marizza181 [45]
3 years ago
10

Why is it important that an expeirement include a control group​

Biology
1 answer:
docker41 [41]3 years ago
7 0
Without a control group there wouldn’t be any basis for knowing if a result is due to the variable being tested
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In a pedigree, an affected male would be designated by:.
ioda

Answer:

a shaded square

Explanation:

trust me bro

5 0
2 years ago
Which of the following is TRUE of a cell membranes?
adoni [48]

Answer:

B, C, Dand E are all correct

Explanation:

Why B is correct- The cell membrane, also known as the plasma membrane, is a double layer of lipids and proteins that surrounds a cell and separates the cytoplasm (the contents of the cell) from its surrounding environment. It is selectively permeable, which means that it only lets certain molecules enter and exit.

Plants, animals, and bacteria have a cell membrane. Why d is correcect

Why C is correct- The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container. Proteins and phospholipids make up most of the membrane structure.

Why E is correct- The plasma membrane is primarily composed of phospholipids arranged in a bilayer, with the hydrophobic tails on the interior of the membrane, and the hydrophilic heads pointing outwards

Why A Is Not correct- It is very fragile and its role is to hold the cell together and to help control what substances can get in and out. It is partially permeable, allowing only some substances to pass through it. The membrane has a complex structure consisting of a phospholipid bi-layer and different types of proteins.

4 0
2 years ago
____ is a rapid way of turning solid waste back into nutrients
ValentinkaMS [17]
The answer is Incineration
8 0
2 years ago
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Which structure of the heart acts like an automatic door that closes once blood enters a chamber and forces it to exit in the pr
AVprozaik [17]
Valves, they are like flaps of muscle that keeps the blood in its place util its ready to be pumped along.

8 0
3 years ago
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A single strand of DNA helix consists of 100 nitrogenous base pairs. On one strand, 36 of the bases are adenine and 24 are cytos
Katena32 [7]
Hello!

For the complementary strand of DNA, 36 Thymine bases and 24 Guanine bases would complete the proper base pairing. 

This is given by the concept of complementarity. A base in DNA has complementarity with only one other base. This complementarity is produced by hydrogen bond interactions.

For DNA, Adenine couples with Thymine and Cytosine couples with Guanine. So the 36 adenine bases will couple with 35 thymine bases, and so on. 

Have a nice day! 
7 0
3 years ago
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