Answer:
1/3
Explanation:
<em>A standard monohybrid cross is a cross that follows the dominance/recessive pattern from Mendel's experiment.</em>
It means the purple flower color is dominant over the white flower color.
Assuming the allele for purple flower color is P and that of the white flower color is p, a standard monohybrid cross will involve a true breeding PP and pp.
PP x pp: Pp, Pp, Pp and Pp. All the F1 offspring will have purple flowers with Pp genotype.
At F2: Pp x Pp = PP, Pp, Pp, and pp.
3/4 or 75% of the F2 offspring have purple flower color out of which 1 is true breeding for the trait.
Hence the fraction of the purple flowered peas in the F2 that is expected to be true-breeding (PP) is 1 out of 3.
The filtrate is first refined and concentrated by the processes of <u>reabsorption and secretion</u>, which form the urine that leaves the body.
<h3>Process of filtration in kidney:</h3>
The glomerulus filters your blood, and the tubule restores necessary substances to your blood while removing waste. The glomerulus is nestled within a region of the kidney called the Bowman's Capsule. This is where filtration occurs. The high pressure causes some substances to pass through the capillary walls when blood is forced through the tiny capillaries. The walls serve as a filter or sieve. This is how the function of the nephron. A glomerulus filters your blood, while a tubule restores necessary substances to your circulation while removing extra waste. Each nephron has both of these functions.
Learn more about filtration here:
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1. Genetically passing on of physical or mental traits from one generation to another is called heredity. There are some diseases and health conditions that can be inherited and passed on, such as heart disease, high blood pressure, Alzheimer's, diabetes and cancer. Thus, knowing the medical history of your family plays an important role in your personal health.
2. Pathogens refer to any bacterium, virus or other microorganisms that can cause illness. Some pathogens may be airborne and can be passed on through coughing and sneezing. Covering your mouth when you cough or sneeze, wearing a face mask and frequent hand washing are some of the ways to prevent the spread of these diseases.
3. Getting vaccinated or not is one of the hottest debatable topics nowadays. For example, though there have been various case studies and research studies that were done to prove that vaccination has lowered cases of measles and polio, there are still some parents who are hesitant to give their children the MMR and polio vaccines.
Some parents have even gone as far as spreading unsupported claims on how vaccines can trigger autism and can cause sudden infant death syndrome (SIDS).
In the Philippines, the cases of elementary students who were claimed to have died of
Dengvaxia (vaccine to fight against Dengue) has caused wide panic among parents. As a result, there are parents who decided not to give their children MMR shots, which eventually caused measle outbreak in some parts of the country.
Answer:Among the oldest methods of preservation are drying, refrigeration, and fermentation. Modern methods include canning, pasteurization, freezing, irradiation, and the addition of chemicals. Advances in packaging materials have played an important role in modern food preservation.
Explanation:
Answer:
CH₄ is the excess reagent and SO₄²⁻ is the limiting reagent.
0.040 g
Explanation:
Step 1: Write the balanced reaction for the methane anaerobic oxidation
CH₄ + SO₄²⁻ ⇒ S²⁻ + CO₂ + 2 H₂O
Step 2: Establish the theoretical mass ratio between the reactants
According to the balanced equation, the theoretical mass ratio of CH₄ to SO₄²⁻ is 16.04:96.06 = 0.1670:1
Step 3: Establish the experimental mass ratio between the reactants
50 mg (0.050 g) of CH₄ react with 60 mg (0.060 g) of SO₄²⁻. The experimental mass ratio of CH₄ to SO₄²⁻ is 0.050:0.060 = 0.83:1
Comparing both mass ratios, we can deduce that CH₄ is the excess reagent and SO₄²⁻ is the limiting reagent.
Step 4: Calculate the mass excess of CH₄
The mass of CH₄ that reacts with 0.060 g of SO₄²⁻ is:
0.060 g SO₄²⁻ 16.04 g CH₄/96.06 g SO₄²⁻ = 0.010 g CH₄
The mass excess of CH₄ is:
0.050 g - 0.010 g = 0.040 g
