The Answer is B) support and protection because your bones protect and support your organs.
Answer:
1. How did the tidal wave affect the predicted frequencies of the alleles in the population?
No changes
2. What is the frequency of the recessive allele?
q= 0.6
Explanation:
If we assume that all individuals were equally likely to be wiped out, that means the frequency/ratio of the gene and genotype of the population will not change. The tidal wave killing 100 out of 200, so it simply makes the population become half of it used to be.
If the population at equilibrium, we can use the Hardy-Weinberg formula to find out the expected frequency of the dominant and recessive alleles. There are 36 homozygous recessives out of 100, so the frequency of the recessive allele will be:
q^2 = 36/100
q= √36/100= 6/10= 0.6
Ans.
Steroids are defined as active organic bio-molecules, having four rings with a specific molecular configuration. Steroids play role in two major functions: as hormones or signaling molecules and as structural components of plasma membrane.
Examples of steroid hormones are estrogen, progesterone, and cortisol. Thus, the correct answer is 'option b). they serve as chemical messengers.'
Q. The brain and spinal cord are known as the central nervous system (CNS). The spinal cord contains nerves that send information to and from the brain. The ___________ is a bundle of nerve tissue at the base of the brain that connects the cerebrum to the spinal cord and sends messages between different parts of the body and the brain.
A. the spinal cord
Answer:
→presence of lot of mucus which blocked the respiratory pathways.
→narrowing of air ways due to inflammation of the epithelial limning.
→inability of the alveolar walls to expel air due to loss of elasticity
Explanation:
When an individual experiences difficulty with breathing,coughed with thick sputum produced,and accompanied with wheezing sounds, there is likelihood of the blockage or obstruction of the respiratory passages to the lungs, which traps air in the lungs and prevents its removal.This condition is called COPD. It is the combination of some pulmonary disease mostly-emphysema and chronic bronchitis, and worsen with time.
Emphysema is the loss of elasticity of the alveolar due to damage to the Elastin tissues(usually by nicotine, tar, in cigarette) which allows the sacs to expand and contracts.Sacs are filled air , but the trapped air can not escape , therefore the lung expands,creating pain for the subject.
The chronic bronchitis is the inflammation of the epithelial lining, which continue to irritate the bronchi, which stimulate immune response and therefore mucus production. it is this mucus that blocked the bronchi given difficulties with breathing (shortness of breath)giving wheezing sounds.
<u>Good lifestyle,intake of medication are measures to cure and prevent this.</u>
