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NemiM [27]
3 years ago
6

Which is not a model according to the scientific definition

Biology
1 answer:
Elza [17]3 years ago
3 0
A light-powered microscope
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the membrane receptors are activated when a certain chemical attaches itself to the receptor.

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3 years ago
Which Best describes how water moves during osmosis? From low salute concentration to high salute concentration
Alenkinab [10]

Complete question: Which Best describes how water moves during osmosis?

A. From passive transport regions to active transport regions

B. From active transport regions to passive transport regions

C. From high solute concentration to low solute concentration

D. From low solute concentration to high solute concentration

Answer:

The correct option is D(From low solute concentration to high solute concentration)

Explanation:

Osmosis can be defined as the thermal movement of water molecules through a selectively permeable or semi-permeable membrane.

A selectively (differentially) permeable membrane will only allow certain molecules to pass through it. Water molecules can pass through a selectively permeable membrane easily but solutes(for example, sugar molecules) cannot.

Using sugar solution to explain further, the following occurs when equal volume of a weak( low solute concentration) and a strong sugar solution( high solute concentration) are separated by a selectively permeable membrane. A diffusion gradient exists between the water molecules in the two solutions. As a result, water molecules move from the low solute concentration to high solute concentration through the membrane. This water movement continues untill there is equal concentration of sugar on the both sides of the membrane.

8 0
3 years ago
susie just squished a cockroach and its pale yellow hemolymph squirted out on the floor. if susie analyzed the hemolymph, she wo
FinnZ [79.3K]

Except Erythrocytes, <u>because insects do not have the Red Blood Cells</u>.

Erythrocytes- Red blood cells, also known as erythrocytes or RBCs, are biconcave, anucleate cells that contain <u>hemoglobin </u>and carry oxygen and carbon dioxide between the lungs and organs. Erythropoiesis, a process in the red bone marrow, is what creates them.

Hemoglobin- The protein molecule known as hemoglobin is found in red blood cells and is responsible for transporting oxygen from the lungs to the body's <u>tissues </u>and carbon dioxide from the tissues back to the lungs. Four linked protein molecules (globulin chains) make up the hemoglobin molecule.

A collection of cells with similar structures and functions is referred to as a tissue.

To know more about the Erythrocytes, click on the below link,

brainly.com/question/16794540

#SPJ4

5 0
2 years ago
Which has greater momentum, a 2.0kg hockey puck moving east at 2.5m/s or a 1.3kg hockey puck moving south at 3.0m/s?
ElenaW [278]

Answer:

I am pretty sure it is 1.3kg hockey puck moving south at 3.0m/s because it weighs less

7 0
3 years ago
What is the process by which heat or acidity disrupts the normal shape of a protein chain?
Mnenie [13.5K]
The process wherein acidity or heat disrupts or destroys the normal shape of a protein is called denaturation. It involves the losing of nucleic acids their quaternary, tertiary and secondary structure. However, this reaction is not enough to break the peptide bonds so the primary structure remains.
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