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DanielleElmas [232]
3 years ago
8

Peppered moths come in two colors, black and white. What did Kettlewell show, with regard to peppered moth populations and tree

coloring? (Recall that England at the time was heated mainly by coal in urban areas.)
Biology
1 answer:
Arlecino [84]3 years ago
5 0
Pollution caused the environment to become more darkly colored, so moths were selected to be blacks and greys.  Before pollution they were white and lighter colors.  <span />
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Phospholipids are lipids that form most of the structure of the cell membrane. True or false
Morgarella [4.7K]
I could be wrong but I believe the answer is True.
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3 years ago
Which eye structure is primarily responsible for making the adjustments required to focus on objects both near and far?.
lbvjy [14]

Answer:

The lens

It helps to focus on objects and light

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2 years ago
Abe knew from his anatomy class that there are three different kinds of muscle tissue in the body. He knew lifting weights would
Aleksandr [31]

Answer:

Three different kinds of muscles are -:

  1. <u>SKELETAL MUSCELES </u>
  2. <u>CARDIAC MUSCLES </u>
  3. <u>SMOOTH MUSCLES</u>

Explanation:

  1. <u>SKELETAL MUSCLES -: </u>There are long, cylindrical, and striated skeletal muscle cells. They are multi-nucleated, which means they have more than one nucleus. This is because from the fusion of embryonic myoblasts, they are created. Each nucleus controls the sarcoplasm's metabolic demands around it. There are high energy requirements for skeletal muscle cells, because they contain several mitochondria in order to generate adequate ATP. <u>Examples of skeletal muscles: arms and legs- </u>T<u>he muscles that belong to the arms and legs feature in pairs. Abdomen and Back- These muscles are connected to the various sets of skeletal muscles that run across the torso.</u>
  2. <u>CARDIAC MUSCLES -</u>: Cardiomyocytes have a short and narrow outline and are fairly rectangular. They are about 0.02 mm wide and 0.1 mm (millimetres) long, respectively. There are many sarcosomes in cardiomyocytes, which provide the required energy for contraction. Cardiomyocytes usually contain a single nucleus, unlike skeletal muscle cells. Cardiomyocytes, although they contain more sarcosomes, normally contain the same cell organelles as skeletal muscle cells.<u> example - cardiac muscle is present in heart. </u>
  3. <u>SMOOTH MUSCLES -:</u> Smooth muscle cells have a single central nucleus and are spindle-shaped. They range in length from 10 to 600 μm (micrometers), and are the tiniest type of muscle cell. In the expansion of organs like the kidneys , lungs, and vagina, they are elastic and therefore essential. As in cardiac and skeletal muscle, the myofibrils of smooth muscle cells are not aligned, meaning they are not striated, hence the term smooth. <u>example of smooth muscles -: Walls of blood vessels ,  Walls of stomach , Ureters ,  Intestines ,  In the aorta (tunica media layer),  Iris of the eye. ,Prostate  and  Gastrointestinal Tract.</u>
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3 years ago
select all of the following statements that are true concerning living organisms and how they acquire energy.
Bad White [126]

The statements that are true concerning living organisms and how they acquire energy are;

Cells, the basic unit of life, cannot survive on their own. Instead, all living organisms must obtain and use energy to live.

The daily food consumption of an organism provides the energy to support all the metabolic processes required for the organism to live.

What are Living organisms?

Living organisms can be regarded as organisms that possess characteristics such as the ability to move and reproduce.

However, they acquire useful energy in different ways, and the daily food consumption of an organism provides the energy to support all the metabolic processes.

Learn more about Living organisms at:

brainly.com/question/2673869

#SPJ4

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What is the keystone species of the food web shown below?
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