Which two regions of the brain control respirationa. Hypothalamus
b. Pons
c. Medulla oblongata
d. A and b
e. B and c

Answer:

Nuclear Reaction

Explanation:

When two nuclei or particles move towards each other and, despite the Coulomb repulsion, they get close enough that there is interaction between the particles of one with the particles of the other by the nuclear force, and the formation of different particles and a redistribution of nucleons and a nuclear reaction is said to have occurred.

Nuclear reactions are usually produced by bombarding a target nucleus with a projectile that may be some type of particle or small nucleus, so that Coulomb's repulsion does not become a major obstacle. Reactions involving not very large energies occur in two phases. In the first phase, the target nucleus and the projectile group together, forming what is called a compound nucleus in a highly excited state. In the second phase, the composite core decays by any process that does not violate the conservation principles

Answer:

1. Research question is a question which is the aim of any experiment or research, in this case, the question addressed by the study is -  Testing the effects of a newly developed drug to lessen the effects of the common cold.

2. Hypothesis is an explanation for the reason for any problem it does not need the evidence and completely based on logic.

The newly developed drug is able to lessen the symptoms of a common cold.

3. Independent variable is a variable manipulated or changed during the experiment:

Administration of drug or placebo (sugar pill)

4. Dependent variable is the response to the effect of the independent variable:

Number of tissues for each volunteer

5. Control group is available that remain constant throughout the study or used to compare the results:

Administration of sugar pill to 25 volunteers

6. Data is the result that the study generated -

At the end of the 7 days or one week period, symptoms of common cold disappear in both sets of volunteers who had taken either the drug or the placebo.

7. Data in this study is found is Qualitativedata as the drug is not administrated in doses.

8. Conclusion of the study is that the Placebo effect present as sugar pills relieve the common cold so This drug needs even more analysis.

Answer:

The correct answer is option C.

Explanation:

The human gastrointestinal microbiota or the gut microbiota or the gut flora refers to the microbes, which thrive in the digestive tracts of humans. The human gastrointestinal tract comprises the gathering of all the genomes of gut microbiota. It is the niche where the human microbiota is found.  

The microbial composition of the gut microbiota differs across the digestive tract. In the small intestine and stomach, very small species of bacteria are found, while the colon comprises the densely populated microbial ecosystem. Of these over 99 percent of the bacteria found in the gut are anaerobes, as the space within the intestines is highly anaerobic.  

These microbes are confined deep within the body where oxygen cannot reach as it is not supplied with the help of blood vessels. Thus, a highly anaerobic environment is witnessed deep within the intestinal regions.  

Answer:

The correct answer is option - B.

Explanation:

Clams are the bivalve mollusks that are classified as a consumer or the filter feeder as they internalize the particles and the suspended nutrients and matter in the water to carry out energy and nutrients for them.

These are known as a consumer due to their bivalve body and get its specific structure which is using gills to filter the food or nutrients particle. This makes the clams unique as some other bivalves organisms.

Thus, the correct answer is option - B.

The strongest evidence that classifies clams as consumers is that they gain energy and nutrients by filtering particles from the water.

WHAT ARE CONSUMERS:

• Consumers are a group of organisms that are incapable of synthesizing their own food, hence, they depend on other organisms for source of energy by feeding on them.

• A consumer can be a primary consumer, secondary consumer or tertiary consumer. Primary consumers feed on producers directly while secondary consumers feed on primary consumers and so on.

• Therefore, an organism is classified as a consumer on the basis of its mode of nutrition.

• Hence, the strongest evidence that classifies clams as consumers is that they gain energy and nutrients by filtering particles from the water.

Learn more: brainly.com/question/15869639?referrer=searchResults

Answer:

a. p=0.725, q = 0.275: P=0.51, H=0.43, Q=0.06

Explanation:

Let state our given parameters from the question:

Frequencies of coat color genes at the C locus for population 1 are .85 for C

This implies that the Allelic frequency C for population p1 =0.85

Frequencies of coat color genes at the c locus for population 1 are .15 for c

This implies that the Allelic frequency c for population q1 = 0.15

Frequencies for Care .6 i.e p2= 0.6

Frequencies for care .4 i.e, let that be q2= 0.4

The table below shows a diagrammatic representation of the above expression:

Alllelic Frequency                      C                                          c

Population 1                        (p1)   0.85                              (q1)   0.15

Population 2                       (p2)   0.6                               (q2)   0.4

Now, from above: let think of the table as a punnet square and then cross it together;

                                            (p1)  = 0.85                              (q1) =  0.15

p2 = 0.6                               p1p2                                       p2q1

                                            = 0.6 × 0.85                           = 0.15 × 0.6

                                            = 0.51 (P)                                = 0.09 (H)              

q2 = 0.4                               p1q2                                       q1p2

                                            = 0.85 × 0.4                           = 0.4 × 0.15

                                            =0.34 (H)                                = 0.06 (Q)

From the above table, the heterozygous are represented by (H)

∴ Frequency of heterozygous can be calculated as:

= 0.09 + 0.34

= 0.43

Thus, we can conclude that the progenyF1 genotypic frequencies are:

P= 0.51

H= 0.43

Q= 0.06

Now, let us calculate the allelic frequencies, p and q in F1

p = P + 1/2 × (H)

= 0.51 + (1/2 × 0.43)

= 0.51 + 0.215

= 0.725

q =Q + 1/2× (H)

= 0.06 + (1/2 × 0.43)

= 0.06 × 0.215

= 0.275

Hence, p=0.725, q = 0.275: P=0.51, H=0.43, Q=0.06 , This makes option a the correct answer.

Answer:

c

Explanation: