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svet-max [94.6K]
3 years ago
5

HELP!!!!!! I don't get any of this can some one please help me?

Biology
2 answers:
umka21 [38]3 years ago
7 0
Cant  see the picture 
horrorfan [7]3 years ago
5 0
1. B 2. c. 3. B and im not sure about the other two
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Jose and Fran MUST follow specific safety procedures when heating water with a Bunsen burner. The safety procedures include
8_murik_8 [283]
The following are some common procedures that we should take action of when using a bunsen burner to ensure our safety:

1. Wear safety goggles. Tie up long hair and school ties if needed. This can lower the risk of catching on fire. Put a heatproof mat underneath the Bunsen burner, put a tripod and the beaker of water for heating on top of the burner.

2. Close the air hole. Before we start up the burner, the air hole must be closed or green flame (striking back) may occur 

3. light up a match or a lighter. Put it over the chimney. 

4. Turn on the gas tap, you should be able to see a yellow flame now. Remove the lighter or match and open the air hole. We should have a blue flame by now. 

5. the water should start to heat up. Never touch the hot beaker with bare hands.

6. When the water is heated up to the temperature they wanted to, it's time to close the air hole and turn off the gas tap. 

7. If they need to move the hot beaker, use heat protection gloves 

These should be the correct procedures that they should follow in order to heat the water safely. 

Hope it helps!



4 0
3 years ago
Describe what happens to a meal of oily beans and maize from the time of ingestion up to the time of aborption
alexgriva [62]

Food is chewed and mixed by the teeth and tongue before being rolled into boluses by peristalsis and entering the stomach through the cardiac sphincter. In the stomach, gastric juice contains pepsinogen, which is activated to pepsin, which breaks down proteins in beans into shorter peptides. Finally, food is churned and allowed into the duodenum via the pyloric sphincter muscle. Finally, bile Trypsin breaks down proteins into shorter peptides, and pancreatic juice, which is released by the pancreas, contains pancreatic lipase, which breaks down bean oil into fatty acids and glycerol. When food enters the ileum, where succus entericus is secreted, it contains the enzymes maltase, peptidase, and lipase, which break down the remaining lipids (oil) into fatty acids and glycerol, which are then absorbed through the lacteals of the villi. Maltase breaks down maltose into glucose, which is then absorbed.

The Digestion and Absorption Process

Even before you put food in your mouth, digestion starts. Your body notifies your brain that it is time to eat when you feel hungry. Your body's ability to prepare for eating is influenced by sights and odours. Your brain receives a message when you smell food. The mouth is subsequently instructed by the brain to prepare, and you begin to salivate in anticipation of a mouthwatering meal.

To learn more about the digestion and absorption process refer here:

brainly.com/question/13762511

#SPJ4

8 0
2 years ago
The earths surface has changed over time because of the tectonic plates.<br><br>A.​
charle [14.2K]
Yes that statement is true
5 0
3 years ago
List what Eukaryotic cells and prokaryotic cells have.
wolverine [178]

Answer:

Summary

All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.

Prokaryotic cells lack a nucleus and membrane-bound structures.

Eukaryotic cells have a nucleus and membrane-bound structures called organelles.

Explanation:

Eukaryotic Cells

Eukaryotic cells usually have multiple chromosomes, composed of DNA and protein. Some eukaryotic species have just a few chromosomes, others have close to 100 or more. These chromosomes are protected within the nucleus. In addition to a nucleus, eukaryotic cells include other membrane-bound structures called organelles. Organelles allow eukaryotic cells to be more specialized than prokaryotic cells. below are the organelles of eukaryotic cells , including the mitochondria, endoplasmic reticulum, and Golgi apparatus.

Prokaryotic cells are usually smaller and simpler than eukaryotic cells. They do not have a nucleus or other membrane-bound organelles. In prokaryotic cells, the DNA, or genetic material, forms a single large circle that coils up on itself. The DNA is located in the main part of the cell.

3 0
2 years ago
What is a short sequence of characters that appears at the end of a filename and is preceded by a period called?
34kurt

The short sequences of characters that appear and can be seen at the end of a filename preceded by a period is filename extensions. While a sequence structure is a set of statements that execute in the order they appear. 

5 0
3 years ago
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