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Marianna [84]
3 years ago
15

What is a photosystem in a chloroplast?

Biology
1 answer:
Paha777 [63]3 years ago
4 0
Photosystems<span> are functional and structural units of </span>protein complexes<span> involved in </span>photosynthesis<span> that together carry out the primary </span>photochemistry<span> of </span>photosynthesis<span>: the </span>absorption of light<span> and the transfer of </span>energy<span> and </span>electrons<span>.</span>
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Identify the primary region of the ulna that forms the hinge joint with the humerus.
wel

<u>Answer:</u>

<em>Trochlear notch is the primary region of the ulna that forms the hinge joint with the humerus. Trochlear notch is the upper cavity part of ulna that has the purpose of fitting the trochlear part of the humerus</em><em>.</em>

It is the hinge joint in the elbow region that makes the hand flexible to rotate. The <em>notch is a semicircular hollow cavity structure in the human arm to fit </em>in the humerus bone which is the bone above ulna in human arm.

6 0
3 years ago
A 28-year-old male who is about to be married has been diagnosed with genital herpes. To avoid complications from the disease an
aliina [53]

Answer:

What the doctor <u>should</u> recommend is: washing hands frequently, especially after touching a lesion , taking acyclovir for a 6- to 12-month period , and always wearing a condom when having sexual intercourse. What he <u>shouldn't</u> recommend is taking penicillin daily for the next year.

Explanation:

Genital Herpes is a viral disease that is frequently transmitted through sexual intercourse and causes infected sores, ulcers and cuts.

While the treatment for herpes can reduce the symptoms, the virus remains latent in the body and will most likely re-appear to cause the same symptoms.

Even when inactive, the virus can be transmitted, so the only way to prevent the spread of herpes is by using condoms or dental dams when engaging in sexual relationships.

To treat herpes, the best option is acyclovir -an antiviral-.

Penicillin WOULD NOT WORK because it is an antibiotic and thus it only kills bacteria (not viruses).

7 0
3 years ago
Which of the following statements about exponential growth curves is true?
ddd [48]

Answer:

a

Explanation:

i really don't know but it might be a

4 0
3 years ago
The lower esophageal sphincter surrounds the upper opening into the stomach. If this sphincter failed to properly constrict, the
seropon [69]

Answer:

Regurgitation of acidic stomach contents into the esophagus, commonly called "heartburn"

Explanation: Esophagus is the part of the alimentary canal,which is a tube that transports food and water substance from the mouth to the stomach. Esophagus has an upper Esophagus sphincter and and the lower Esophagus sphincter. The lower Esophagus sphincter contains muscles that connects the Esophagus and the stomach. When the lower Esophagus sphincter is closed it prevents the movement of Acids and contents in the stomach from traveling backwards from the stomach. When it fails to effectively constrict it causes what is called "HEARTBURN".

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3 years ago
A roller coaster ride begins with a chain and motor. The cart carrying the people is pulled by the chain, powered by the motor,
Crank

The correct answer is O

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3 years ago
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