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Lelu [443]
3 years ago
8

Heart attacks

Biology
1 answer:
Lunna [17]3 years ago
5 0

Answer:

The correct option is : b. can be mild, moderate, or severe

Explanation:

Myocardial infarction, or heart attack, is a medical condition that occurs when the flow of blood stops or decreases to the human heart, thus causing damage to the heart muscles. Some of the symptoms include chest pain, nausea, sweating, cold sweat, fatigue, etc.

Heart attacks<u> can be mild, moderate or severe and can also cause sudden death. </u>

If the inadequate blood flow to the heart lasts long enough, it can lead to <u>necrosis of the heart tissues</u>.

Myocardial infarction can be <u>diagnosed by electrocardiogram (ECG), echocardiogram, blood tests, X-ray, angiogram, MRI.</u>

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True or false<br> almost all cells have a nucleus
Viefleur [7K]

Answer:

True

Explanation:

Almost all cells have a nucleus. Haemoglobin is red blood cell but has no nucleus, prokaryotes have plasmid and not a nucleus sooo... Yea

7 0
2 years ago
Based on the picture below, answer the following T/F questions. Explain your answer. a. The two chromosomes on the left (#1) are
STatiana [176]

Answer:

a) False.

b) True.

c) False.

d) True.

e) False.

f) True

g) True.

Explanation:

a) The main characteristic of homologous chromosomes is that they have an equal size. There is a difference in size on both chromosomes.

b) In number one, two chromosomes are homologous. In number two also two chromosomes are homologous. On the other hand, the chromosomes at number one and two are different. Each chromosome has two sister chromatids.

c) A DNA molecule has a double helix, that is, two chains. When a DNA chain is broken and a chromatide has a DNA chain, then two chromatids make up a chromosome and a DNA chain, in this way there are eight dsDNA molecules

d) If each chromosome contains a centromere, therefore, there are four centromeres on all four chromosomes.

e) If a chromosome contains four telomeres, therefore there will be sixteen telomeres.

f) The function of cohesin is to regulate the separation of chromatids in the cell division process. When DNA replication is complete, the DNA compacts and condenses to form mitotic chromosomes.

g) The CENPA protein is encoded by the CENPA gene.

4 0
3 years ago
HELP ASAP PLEASE
Andrews [41]
D
Because most air pollution is caused by the burning of fossil fuels burned in the home
5 0
2 years ago
In the Kirby-Bauer disk diffusion test, the _______ of the zone of inhibition is measured and used for interpretation.
snow_tiger [21]

Answer:

The correct option is : a. diameter    

Explanation:

The Kirby–Bauer test or the disk diffusion test, is a method to determine the antibiotic sensitivity of the given bacteria. This test involves the use of antibiotic discs to determine the effect of antibiotics on the bacteria.

In this test, the wafers having antibiotics and the bacteria are placed on the agar plate and incubated. If the antibiotics present stops the growth of the bacteria, there will be an area around wafer with no bacterial growth, such an area is known as the zone of inhibition.

<u>The </u><u>diameter of this zone of inhibition</u><u> is measured to determine the </u><u>antibiotic sensitivity of the given bacteria</u><u>.</u>

7 0
2 years ago
Which of the following is the best definition of a saturated fatty acid?
Oksi-84 [34.3K]
The best choice would be C.

A saturated fatty acid is a basic unit of lipid that consists of only single carbon to carbon bonds.

Saturated fatty acids have been “saturated” with hydrogen ions and only have single carbon to carbon bonds, unlike unsaturated fatty acids that have both single and double bonds and have kinks and aren’t straight.

Saturated fatty acids are solid in room temperature(animal fats) and unsaturated fatty acids are liquid in room temperature(oils/plant fats).

6 0
3 years ago
Read 2 more answers
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