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umka2103 [35]
3 years ago
10

Why are antibiotics unhelpful for treating the common cold?

Biology
2 answers:
Wewaii [24]3 years ago
5 0

Viruses cannot be killed by antibiotics. APEX

andrey2020 [161]3 years ago
3 0
D:viruses are not killed by antibiotics.
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If fertilized, an ovary becomes a(n):<br> O Fruit<br> O Stigma<br> O Receptacle<br> Seed
postnew [5]

Answer:

Option A Fruit

Explanation:

After fertilisation, the female parts of the flower develop into a fruit: the ovary wall becomes the rest of the fruit.

6 0
3 years ago
Which population is limited by density-dependent factors?
dedylja [7]

Answer: (c) A local wolf population experiences a lethal epidemic of parvovirus.

Explanation:

A limiting factor is one which is capable of limiting the population of the species. It can be a living factor or a non-living factor.  

The density dependent limiting factor is a factor which affects the population of a species depending upon the size of the population. There are many density dependent limiting factors such as disease, migration, predation and food.  

C is the correct option, this is because of the fact that the epidemic outbreak can spread over to the large number of members of the population. If larger the population size more likely will be the chances of spreading.  

3 0
3 years ago
Where were typhoid cases normally concentrated
kvasek [131]

Typhoid fever is most common in non-industrialized countries. Travelers to Asia, Africa, Eastern Europe, and Latin America are especially at risk. Salmonella typhi bacteria are shed in the urine or stool of infected persons, including chronic carriers. There are no known animal reservoirs for typhoid fever.

8 0
3 years ago
in a 3-point cross, crossovers that occur during the formation of which gametes can be scored using the phenotype of f2 progeny?
JulsSmile [24]

In gametes generated by F1 tri-hybrids and gametes produced by parents from true-breeding populations.

When non-sister chromatids of homologous chromosomes exchange genetic material during meiosis, novel allelic combinations are created in the daughter cells. The locations of three genes in the genome of an organism are identified using a three-point cross. A homozygous recessive individual is crossed with a person who is heterozygous for three mutations, and the progeny's phenotypes are graded. When F1 progeny are self-pollinated, a 3:1 ratio of F2 progeny are created.

To konw more about homologous chromosomes please click on the link brainly.com/question/27258467

#SPJ4

7 0
1 year ago
How do organisms respond if an organ system is unable to function properly
MA_775_DIABLO [31]

Answer:

Either death or disease

3 0
3 years ago
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