In homeostatic control processes any deviation from the norm sets into motion the appropriate corrective mechanisms which restore the norm. This rectification occurs through negative feedback. When you go outside wearing a sweater on a hot day, the body sends messages to the CNS and the following occurs:

The superficial blood vessels vasodilate so that more blood flows near the surface. This encourages heat loss.
Sweating and panting. Sweat secreted by the sweat glands evaporate from the surface of the body as it absorbs latent heat.
The metabolic rate falls so that the body generates less heat. You also become less active
Behavioural response by seeking cooler areas, cold drinks or removal of the sweater.

5 0

3 years ago

When blood pH becomes overly acidic, respiration and kidney function change to bring the acidity back to its normal pH level of

lapo4ka [179]

Answer:

homeostasis

Explanation:

Homeostasis has to do with processes that maintain the internal balance within an organism. It can succinctly be defined as the process of regulating an organism's internal environment. The process of homeostasis is very important in the maintenance of important indicators of balance in the body such as body temperature, body pH, etc.

Hence, when blood pH becomes overly acidic, respiration and kidney function change to bring the acidity back to its normal pH level of 7.4. This is a homeostatic response.

5 0

3 years ago

In horses, the allele for a black coat (B) is dominant over the allele for a brown coat (b). A cross between a black horse and a

GaryK [48]

Answer:

Bb X bb

Explanation:

It is given that the allele B for the black coat is dominant over allele b for a brown coat.

A dominant allele always leads to the expression of the dominant trait in the heterozygous condition.

When a black and brown horse is crossed as given in the question and the result is a brown foal, then the genotype of the brown foal must be bb as the brown coat is a recessive trait.

Since each parent contributes one allele each for a given gene, the black horse must have b allele, and hence must be heterozygous Bb.
The cross is shown in the punnett square.

4 0

3 years ago