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AfilCa [17]
3 years ago
8

What are the 5 structures that enable the heart to contract (cardiac conduction)

Biology
1 answer:
Alenkinab [10]3 years ago
6 0

Answer:

sinoatrial node

Explanation:

impulses starts in small bundles of specialized cells which are located in the right atrium which is known as the SA node. The electrical activity tends to spread through the walls of the atria and then causes it to contract. however, forcing the blood into ventricles.

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Homozygous alleles are also called
Kruka [31]
Purebred is another word for homozygous
6 0
3 years ago
The pleural cavities and the pericardial cavity are located within which larger body cavity?
Colt1911 [192]

Answer:

its B. <em><u>thoracic</u></em><em><u> </u></em><em><u>cavity</u></em><em><u>.</u></em>

Explanation:

it is the ventral body chamber that contains the pericardial cavity (the heart) and the pleural cavity (the lungs).

7 0
3 years ago
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Help answer 13,14,15
zaharov [31]

Answer:

13. Net Force = 0

14. The forces are balanced

15. Constant motion or Equilibrium will occur

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4 years ago
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When an enzyme loses its shape, it loses its function. This is called
Levart [38]

Answer:

Hi, There!

Denaturation Is the Correct Answer!

Explanation:

When an enzyme is denatured, it essentially melts and loses its shape. Denaturation can be caused by extreme heat and by changes in pH.

xXxAnimexXx

Have a great day!

7 0
3 years ago
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if there are 100 individuals in a population and 20 are homozygous for b, 60 are heterozygous, and 20 are homozygous for b, what
Yuri [45]

If there are 100 individuals in a population and 20 are homozygous for b, 60 are heterozygous, and 20 are homozygous for b, the allele frequency of b is 50%.  

Allele frequency, sometimes referred to as gene frequency, is the percentage or fractional frequency of an allele (gene variant) at a certain location in a population. What is being discussed is the proportion of chromosomes in the population that carry that allele in comparison to the entire population or sample size. The slow change in allele frequencies within a population is known as microevolution.

Taking into consideration:

1. A particular allele at a particular chromosomal region.

2. A collection of N individuals with ploidy n, which denotes that each individual's somatic cells have n copies of each chromosome (e.g. two chromosomes in the cells of diploid species).

If an allele is found in a population on I chromosomes, the allele frequency is the proportion of all I occurrences of that allele to the total number of copies of the chromosome in the population (nN). Despite being related, the genotype frequency and the allele frequency are separate and one can infer the other from the other.

To know more about allele please refer: brainly.com/question/7602134

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4 0
2 years ago
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