PH can be regulated in the collecting duct. a. True b. False

Biology

1 answer:

cestrela7 [59]3 years ago

3 0

Answer:

a. True

Explanation:

pH can be regulated by the collecting duct of the kidney. Collecting duct play an important role in the maintenance of pH and ionic balance of the blood by the selective secretion of hydrogen ions (protons) and potassium ions. Collecting duct is long duct which extends from the cortex of the kidney to the inner part of the medulla. In the collecting duct, a large amount of water reabsorption occurs.

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Grouping objects or information based on similarities

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The Radio-ulna and digits of most primates and animals represents a homologous structure

An example of another internal structure is the genes.
The homologous chromosomes have the same genes in common. Each cell has at least two sets of chromosomes which one comes from one’s father also called as paternal chromosome and mother, called as the maternal chromosomes. These chromosomes are what makes the child obtain the characters and may depend on the traits the parents possess. Homologous chromosomes are not duplicated chromosomes or identical however, they are analogous or similar. The alleles for a specific characteristics isn’t the same but the same genes are in the same order.

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In a cross of two heterozygous parents, 25% of the offspring should have the recessive phenotype.

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5._____________________is factual information that results from a scientific investigation. A.bias B.data C.assumption D.none of

Mnenie [13.5K]

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Suppose a couple has come to see you to discuss the probability of their children having cystic fibrosis (CF). CF is known to be

m_a_m_a [10]

Answer:

The children that the couple may have a 25% chance of having cystic fibrosis and 75% chance of being carriers for the CF gene

Explanation:

We know that both parents are in the same situation. Let's start for example with the mother. She has one parent and one sibling with cystic fibrosis (CF). So, supposing that the allele of the gene that causes the disease is "f", as the disease is autosomal recessive, both, the parent and the sibling have the genotype ff.

Also, knowing that the other parent has a normal phenotype, but the sibling has CF, we deduce that the other parent of the mother must have a Ff.

So, despite the mother's phenotype is normal, her genotype is Ff (see the Punnett square 1) Couple's parents in the attached image). In other words, she is a carrier for the CF gene.

As the parents' situation is analogous, we can deduce that the father also has a genotype Ff and is also a carrier for the CF gene.

Now, if we look at the Punnett square for them (see the square 2) Couple in the attached image), we see that all their children will always have at least one copy of the CF allele, f.

More specifically, their children have 25% chance of having cystic fibrosis and 75% chance of having a normal phenotype but being carriers of the CF gene.

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When the blood glucose level decreases during a fast or between meals, the pancreas releases glucagon. Glucagon signals the live

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Answer:

Glucagon signals the liver to start producing glucose.

Explanation:

Glucagon signals the liver to start producing glucose from the breakdown of amino acids through gluconeogenesis process. When the glucose level decreases in the body due to fasting or starvation, the pancreas release glucagon which provides signals to the liver to produce glucose form non carbohydrates substances present in our body. This production of glucose increases the concentration of glucose in the blood and the body used this glucose for the generation of energy molecules in the form of ATP.

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