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Nesterboy [21]
3 years ago
10

-

Biology
1 answer:
Tems11 [23]3 years ago
5 0

When the disease has been throuh you or you had your vaccination done. The immune system recognize the disease and make antibodies.

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Which type of nonfoliated metamorphic rock is granular and made of quartz?
Mars2501 [29]
I'm sure it's Quarts, the answer would be D 
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(Forensics) The first insects to arrive at a death scene are the ______.
const2013 [10]
The answer to your question is "maggots"
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3 years ago
A large number of disease-free individuals were enrolled in a study
Nuetrik [128]

Answer:

a,Answer: Type I right censoring, censoring time = 60.

b.This is called an Interval censoring,

c.this is called Random censoring because the year in consideration was chosen at random, censoring time = 61.

d.The observations are left truncated respectively at age 30, 40, 50 and 42.

e.L\alpha \frac{S(60)}{S(30)} *\frac{S(52)-S(55)}{S(40)} *\frac{S(61)}{S(42)} *\frac{S(55)}{S(50)}

Explanation:

a) A healthy individual, enrolled in the study at age 30, never developed

breast cancer during the study.

Answer: Type I censoring, censoring time = 60.

(b) A healthy individual, enrolled in the study at age 40, was diagnosed

with breast cancer at the fifth exam after enrollment (i.e., the disease

started sometime between 12 and 15 years after enrollment).

THis is called an Interval censoring,

if the clinical exams is conducted every three years , then 3*4=12, and 3*5=15

add this to 40 years respectively, we have

censoring time = (52, 55]

c) A healthy individual, enrolled in the study at age 50, died from a

cause unrelated to the disease (i.e., not diagnosed with breast cancer

at any time during the study) at age 61.

this is called Random censoring because the year in consideration was chosen at random, censoring time = 61.

(d) An individual, enrolled in the study at age 42, moved away from

the community at age 55 and was never diagnosed with breast cancer

during the period of observation.

Random censoring, censoring time = 55.

The observations are left truncated respectively at age 30, 40, 50 and 42.

e.  Confining your attention to the four individuals described above,

write down the likelihood for this portion of the study.

L\alpha \frac{S(60)}{S(30)} *\frac{S(52)-S(55)}{S(40)} *\frac{S(61)}{S(42)} *\frac{S(55)}{S(50)}  

the above represent the likelihood

3 0
3 years ago
You have a strain of bacteria that is defective for DNA glycosylase activity. You expose one culture of this strain to EMS and t
Scrat [10]

Answer:

Bacteria under successive rounds of selection may acquire genetic resistance to the treatment with mutagenic compounds including ethyl methanesulfonate (EMS).  

Explanation:

Artificial selection is a process known to generate resistance of the organisms under treatment. For example, this type of selection has been reported to generate resistance to the treatment with different chemical compounds including mutagenic chemical compounds (in this case EMS), antibiotic drugs, etc.

4 0
3 years ago
The ________ is the brain structure most involved in perceiving interoception or sensations within the body.
Ludmilka [50]

Answer: The question is incomplete, options are not given and here are the options gotten from another website.

a. Thalamus.

b. orbitofrontal cortex

c. insula

d. fornix

The correct option is C.

Insula.

Explanation:

It is insula because insula is a part of the cerebral cortex that is found within the lateral sulcus that separates the parietal and frontal lobes from temporal lobes. It plays a major role in control emotions like lusts, desires, cravings, pride e.t.c. it connect sensory signals from the environment, it play a major role in psychiatric disorders like , mood,post-traumatic stress and panic.

5 0
3 years ago
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