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seropon [69]
3 years ago
12

Physical and chemical changes occur during digestion. An example of a chemical change during digestion is

Biology
1 answer:
Nataly [62]3 years ago
6 0

Answer:

D

Explanation:

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In the infamous anthrax attacks of 2001, several letters were received at the offices of two U.S. senators and verious new media
Len [333]

Answer:

The dry-out material contains spores of anthrax-causing bacteria

Explanation:

<em>Anthrax is a disease caused by a bacteria known as Bacillus anthracis. Susceptible animals get infected by anthrax when the spore of the bacteria gets into their bodies, become activated, multiply and produce toxins.</em>

The spore serves primarily as a propagating structure and also as an agent for transmitting infections. It can be transmitted by air, water, food or any other means. Bacterial spores usually have the capability to tolerate harsh environmental conditions and only become inactivated when conditions are favourable.

The dry granular powdery material constituent of the letters received by the U.S. senators must have been spores of <em>Bacillus anthrasis</em>

3 0
2 years ago
Various sigma factors play a role in gene expression by.
Anna [14]

Answer:

Sigma factors bind to the promoter region of a particular gene and facilitating the binding of RNA Polymerase to the promoter region (formation of the RNA polymerase holoenzyme complex) in order initiate transcription of the gene.

Put simply - Helps RNA Polymerase do it's job.

8 0
2 years ago
The base of an energy pyramid is always composed of _______________.
Rudik [331]

Autotrophs!!!!!!!!!!!!

7 0
3 years ago
Which diseases are caused by hereditary factors?
Phantasy [73]

Answer:

type 1 diabetes and cancer

Explanation:

All the others are contagious diseases that you can contract, but type 1 diabetes and cancer can be caused by genetics. The others are all things that you can usually recover from while cancer and diabetes are usually conditions that cannot be escaped sadly.

3 0
2 years ago
Oil is a fossil fuel that provides power to sustain a modern lifestyle. Which of these statements best describes a benefit of oi
rewona [7]

Less expensive source of energy is available.

hope this helped, please mark brainliest :)

5 0
3 years ago
Read 2 more answers
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