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never [62]
3 years ago
13

Why is dna called the "double helix"? select one:

Biology
1 answer:
Anna71 [15]3 years ago
6 0
B. DNA is double stranded, with the two strands both in the form of a helix entwined around each other like the strands of a rope. 
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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
If you crashed on a deserted island how would you modify, adapt, and depend on the island?
skad [1K]
Don't Panic
Avoid injury
Salvage all you can
Obtain a source of water
Build a shelter
Find food

Hope that helped have a good day
5 0
3 years ago
Fill in the blank:
OverLord2011 [107]
Nerve, Skin, Cyclins, Cancer
7 0
3 years ago
Why does mutation happen regularly? *
Elan Coil [88]

Answer:

Explanation:

A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.

7 0
2 years ago
Mimulus lewisii and Mimulus cardinalis are two plants that occupy the same habitat but do not interbreed in nature. However, the
Inessa [10]
The best answer here is they show seasonal difference in flowering. if they self pollinated they could still interbreed assuming they flower in the same seasons
5 0
3 years ago
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