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bekas [8.4K]
3 years ago
14

1. The mechanism of breathing – how do inhalation and exhalation actually occur.

Biology
1 answer:
Masteriza [31]3 years ago
6 0

When the air pressure within the alveolar spaces falls below atmospheric pressure, air enters the lungs (inspiration), provided the larynx is open; when the air pressure within the alveoli exceeds atmospheric pressure, air is blown from the lungs (expiration).

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The purpose of a hypothesis is: 1. to start a plan to test your idea 2. to provide the answer to your investigation 3. to allow
zimovet [89]

Answer:

3.

Explanation:

As a hypothesis is used as an experiment in order to define the relationship between two variables, and to find the answer(s) to a question while a formalized one forces us to brainstorm about the results in which we should search for in an experiment.

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The spinal cord is made up of
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6 0
4 years ago
What type of organism uses chitin for structure and support?
Evgen [1.6K]

Answer:

fungi

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6 0
3 years ago
A wire-hair terrier and a smooth-hair terrier are mated. The offspring produced are 6 wire-hair puppies and 2 smooth-hair puppie
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Let’s assume a wire-hair terrier is a true breed for wire hair with alleles (BB) and a smooth-hair terrier is true breed for smooth hair (bb). Allele B is dominant over its allele b. When these two terrier mated and produce offspring wire-hair terrier and smooth-hair terrier in the ratio 3:1.

Based on this result it can be inferred that –

a. The pattern of inheritance is monohybrid cross.

b.Genotype of wire-hair terrier (1BB and 2 Bb) and genotype of smooth-hair terrier is (bb)

c. Phenotype ratio will be 3:1 and genotypic ratio will be 1:2:1.

7 0
4 years ago
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