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3 years ago

Need Answer ASAP only 4 min

Biology

2 answers:

enot [183]3 years ago

8 0

Answer:

Explanation:

This is the circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment.

Lelechka [254]3 years ago

3 0

H is the answer!!! :)

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6. Before transferring sperm to the female during mating, the males of some species of beetles use their copulatory organs to re

scZoUnD [109]

Answer: Mechanical Isolation

Explanation:

Mechanical isolation is a type of barrier that prevents the species that are closely related from mating with each other.

It is used in case of plants and animals(here beetles) in which the without compatible sex organs individual of different species will not be able to mate and produce offspring.

Thus, the correct answer is option C

6 0

3 years ago

The client was diagnosed with cocaine abuse at age 30. When the client was 23, the client was diagnosed with major depressive ep

allochka39001 [22]

Answer:

d-The client most likely has a dual diagnosis since she has both a substance dependence and depression.

Explanation:

What is dual diagnosis?

An individual with dual diagnosis shows both a mental disorder and an alcohol or drug situation. These situations is seen in unison more often. Nearly half of people who shows a mental disorder do express substance use disorder at a point or the other. The interrelationship of the two situation can worsen both.

Why do substance use disorders and mental disorders is often seen in unison?

Thou they occur together, but it can't be said that one prompt the other, even if one started earlier as in our case study.

There are three reasons showing why they occur in unison:

•Generally, risk factors may lead to both mental disorders and substance use disorders. Such as genetics, stress, and trauma.

•Mental disorders can lead to drug use and substance use disorders. Using drugs or alcohol to find relief (self-medication). This could lead to addiction.

•Substance use and addiction can contribute to the occurrence of a mental disorder. Causes brain changes.

What are the treatments for dual diagnosis?

Individuals with dual disorder should treat both conditions. For the treatment to be operative, there is need to abstain from alcohol or drugs. Treatments may involve behavioral therapies and medicines. Also, support groups importance for emotional and social support cannot be neglected.

6 0

3 years ago

What is the chemical formula of oxygen?

PtichkaEL [24]

Answer:

O^2

Explanation:

3 0

3 years ago

Read 2 more answers

Use the drop-down menus to select the names of the labeled structures A: B: C:

likoan [24]

Answer:

A: crust

B: mantle 

C:core explanation may it help u buddy 

8 0

3 years ago

Read 2 more answers

In grapes, the wild-type DND1 gene confers resistance to attain viruses, and strains are susceptible to viruses. The EDS1 gene c

Genrish500 [490]

Answer:

I = 62.5%

Explanation:

Available data:

the wild-type DND1 gene confers resistance to attain viruses. Strains are susceptible to viruses
The EDS1 gene confers resistance to powdery mildew, a type of fungal infection
The genes are linked, eight map units apart on chromosome
A third gene, IR 1. imparts resistance to certain lepidopteran leafminers and is 10 map units from EDS1 and 18 map units from DNDI
The observed double crossover rate is 0.3%

According to this information, we can picture the position of each gene in the chromosome

---DND1----------------------EDS1-----------------------------------IR1---

║---------- 8MU---------║------------------10MU-------------║

║------------------------------18MU------------------------------║

The map unit is the distance between the pair of genes for which one of every 100 meiotic products results in a recombinant product.

1% of recombinations = 1 map unit = 1cM. The maximum recombination frequency is always 50%.

So, if we know the distances between genes, we know their recombination percentages.

DND1-EDS1 = 8 MU = 8% recombination
EDSI-IR1 = 10 MU = 10% recombination

To calculate interference, first, we need to know the coefficient of coincidence, CC.

CC= observed double recombinant frequency/expected double recombinant frequency

Note:

observed double recombinant frequency=total number of observed double recombinant individuals/total number of individuals

expected double recombinant frequency: recombination frequency in region I x recombination frequency in region II.

CC= (0.003)/(0.08 x 0.1)

CC=0.003/0.008

CC=0.375

CC = 37.5%

The coefficient of interference, I, is complementary with CC.

I = 1 - CC

I = 1 - 0.375

I = 0.625

I = 62.5%

7 0

3 years ago