Question

The elderly can have impaired immune systems, making them susceptible to infections that can take longer to heal. Which of the following would be most helpful in preventing these types of illnesses in the elderly?

Older people should avoid exercise so that their bodies are not exposed to stress.

Older people should regularly take antibiotics to prevent development of infection.

Older people should be vaccinated for common viruses like the flu virus.

Older people should avoid vaccinations as it could compromise their immune systems.

Answer 1

Please Help :( I have more questions

Answer 2

C.

Answer 3

keep asking.

Answer 4

thank you. okay

Answer 5

How would exercising, sleeping well, eating healthy foods, and receiving recommended vaccines affect a person's immunity?

A person may become ill from having so many vaccines that the immune systems will begin to fail.

The stress on the body from exercise would cause a decrease in a person's ability to fight infectious pathogens.

Only vaccinations will help boost the person's immune system.

The body will be able to produce the antibodies and memory cells needed to fight disease and recover quickly.

Answer 6

option D is correct.

Answer 7

okay hang on for the next one

Answer 8

Which of the following explains why the likelihood of survival is low for a fetus born before 32 weeks?

The fetus does not have fully developed lungs.

The fetus cannot control its own body functions.

The fetus is not able to store its own nutrients.

The fetus has not undergone neurulation.

Answer 9

A.

Answer 10

If there is a mutation in a zygote, where is it likely to be found in the fetus?

The mutation will show up in any fetal cells formed by mitosis but not in those formed by meiosis.

The mutation will only be in the one cell that was the original zygote and the other cells of the fetus will not have it.

The mutation will occur in all the cells of the fetus since they all formed by mitosis from the zygote.

The mutation will only be found in the types of cells in the fetus that could be harmed by the mutation and not in any others.

Answer 11

actually a mutation is found in those types of cells,which can be harmed by it,and our gonadal cells can carry forward this mutation either good or bad to next gen,but no mitotically developing cell can be harmed from a single affected cells.so D.

Answer 12

Thanks! here's another

Where does a zygote implant after fertilization?

Fallopian tube

Vagina

Uterus

Ovary

Answer 13

this one's fairly simple

Answer 14

vimplantation occurs at uterus,lining layer called endometrium.

Answer 15

Great! Here's another almost done!

Answer 16

A certain type of heart-muscle disease thickens the heart muscle so that the heart chambers shrink in size. How would this disease affect a person over time, as the volume of the heart chambers continues to shrink?

The person would become more alert and anxious over time because the enlarged heart muscles would pump more blood to the brain than before the disease progressed.

The person would develop low blood pressure and feel faint because the heart will be pumping less blood with each heartbeat.

The person would become more tired and weak because the volume of oxygenated blood pumped with each heartbeat would decrease over time.

The person would develop high blood pressure because the thicker heart muscles and smaller heart chamber volume would cause more pressure in the heart.

Answer 17

both c and d are applicable.ask THOMASTER ABOUT IT.

Answer 18

okay ready for another?

Answer 19

A leukemia patient may suffer from low blood platelet count. What might occur because of the lack of platelets in the patient's blood?

The patient may develop lesions in the vein and artery walls where large clots will obstruct blood flow.

The patient may have internal bleeding and cuts may not stop bleeding.

The patient may suffer from many infections which could affect heart rate and blood pressure.

The patient may feel excessively tired because the blood cannot carry enough oxygen.

Answer 20

is not leukemia is low content of white blood cells?

Answer 21

okay next one

Answer 22

Mark turned quickly, pivoting on his right foot, while he was playing basketball. He felt a sudden, sharp pain in his knee and found his leg would not support him well. When he tried to walk off the court, his knee wobbled sideways. Based on this evidence, which of the following has he most likely injured?

He has broken the femur and it can no longer maintain proper muscle tension to support his weight

He has injured the quadriceps muscle that is responsible for moving his leg up and down as he walks or runs.

He has injured one of the tendons or ligaments that help keep his knee in place, connecting it to the surrounding muscle and bone.

He has torn the cartilage that cushions the interior of his knee, keeping it aligned with the bones in his leg.

Answer 23

ask @thomaster

Answer 24

okay

Answer 25

c he might have njured the cruciate ligament

Answer 26

or collateral ligament