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slavikrds [6]
3 years ago
6

Which type of skeletons do invertebrates such as crabs have?

Biology
1 answer:
jeka943 years ago
3 0
Answer: Exoskeleton

This is the answer to your question, hope it helps!
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The epidermis is composed of five cell types. match each type to its description.
WITCHER [35]
Listed under are the 5 different type of cells found in the epidermis and their description:

1. Stem cells
These are what you call undifferentiated cells. These are cells found in the stratum basale, which is the deapest layer of the epidermis. These cells divide to create keratinocytes. 

2. Keratinocytes
The make up the majority of the cells in the epidermis. They synthesize keratin which are proteins that make up your hair, skin, and nails. They can also be found in other organs inside your body.  

3. Melanocytes
These cells can only be found in the stratum basale. They synthesize melanin with a brown to black pigment. These dark pigments serves as protection for the skin from harmful UV rays. 

4.Merkel cells
Merkel cells are also known as <em>tactile cells</em>. They are the sensory receptor for touch. Merkel cells and the nerve fiber together are called the Merkel disc. 

5. Dentritic cells
They are also known as <em>Langerhans cells</em>. They can be found in two layers of the epidermis: the stratum spinosm; and stratum granulosm. They are what you call macrophages that come from the bone marrow. They serve as immune cells that provide protection against toxins, microbes and other pathogens that try to penetrate the skin. 

Hope you find some information above that will help you.
3 0
3 years ago
Which of the following steps of the carbon cycle is occurring at point A?
vichka [17]

Answer:    

D.) COMBUSTION

5 0
3 years ago
Oils are lipids that contain
irina [24]

Answer:

A. Mostly unstaurated fatty acids

Explanation:

Fats can be both mostly saturated and unsaturated, though oils typically fall under the description of mostly unsaturated.

4 0
3 years ago
Stress is the most common cause of (2 points)
bonufazy [111]

When stress becomes long-term and is not properly addressed, it can lead to a number of more serious health conditions, including depression. It's high blood pressure.

7 0
3 years ago
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In a worm what part of the digestive system would you see in a cross-section anterior to the gizzard
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<span>Crop is the part of the digestive system you would see in a cross-section anterior to the gizzard in a worm. Crop is a thin wall organ that acts as a temporary food storage chamber. The esophagus leads to the crop and the organ next to it is the gizzard which serves as the food grinding chamber.</span>




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