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Reptile [31]
3 years ago
5

What is unusual about mitochondria DNA?

Biology
1 answer:
Anni [7]3 years ago
8 0
Mitochondria has a small amount of their own DNA
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How does the nurse apply the identity versus role confusion stage in the care delivery of an adolescent ? select all that apply?
Mrrafil [7]
Childbirth is scary enough for adult women, let alone an uneducated adolescent (depending on age). all women in labor need a coach, spouse or parent to comfort them through the delivery process to let the future mother know these stages are normal.
7 0
3 years ago
An individual with this karyotype would be described as A) an abnormal male with nondisjunction. B) a normal male with the expec
kaheart [24]
<h2>Answer:</h2>

The correct answer is option A which is an abnormal male with nondisjunction.

<h3>Explanation:</h3>

The karytope is the complete picture of chromosomes present in a cell of an individual.

It is used to study the chromosome number and abnormalities related with chromosome numbers.

Chromosomal nondisjunction is the consequence when the homologous chromosomes are not completely separated from each other during meiosis.

While chromosomal translocation is the crossing over of genetic material between two chromosomes.

Only chromosomal disjunction can be seen from the karyotype.

6 0
3 years ago
Read 2 more answers
At what point do the pulmonary and systemic circulation systems meet up?
Hitman42 [59]

Answer: The Heart

Explanation:

The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart. The system of blood vessels resembles a tree: The “trunk” – the main artery (aorta) – branches into large arteries, which lead to smaller and smaller vessels. The smallest arteries end in a network of tiny vessels known as the capillary network.

There are two types of blood circulatory system in the human body, which are connected: The systemic circulation provides organs, tissues and cells with blood so that they get oxygen and other vital substances. The pulmonary circulation is where the fresh oxygen we breathe in enters the blood. At the same time, carbon dioxide is released from the blood.

Blood circulation starts when the heart relaxes between two heartbeats: The blood flows from both atria (the upper two chambers of the heart) into the ventricles (the lower two chambers), which then expand. The following phase is called the ejection period, which is when both ventricles pump the blood into the large arteries.

In the systemic circulation, the left ventricle pumps oxygen-rich blood into the main artery (aorta). The blood travels from the main artery to larger and smaller arteries and into the capillary network. There the blood drops off oxygen, nutrients and other important substances and picks up carbon dioxide and waste products. The blood, which is now low in oxygen, is collected in veins and travels to the right atrium and into the right ventricle.

This is where pulmonary circulation begins: The right ventricle pumps low-oxygen blood into the pulmonary artery, which branches off into smaller and smaller arteries and capillaries. The capillaries form a fine network around the pulmonary vesicles (grape-like air sacs at the end of the airways). This is where carbon dioxide is released from the blood into the air inside the pulmonary vesicles, and fresh oxygen enters the bloodstream. When we breathe out, carbon dioxide leaves our body. Oxygen-rich blood travels through the pulmonary veins and the left atrium into the left ventricle. The next heartbeat starts a new cycle of systemic circulation. Below is an attachment of a diagram that explains the connection between pulmonary and systemic circulation from google.

5 0
4 years ago
What would happen to a cell if it underwent all the activities at once? Please help me
nadezda [96]
If a cell was to undergo all the activities, eg cell division my mitosis, it results in growth. When we were still zygotes, cell division happened by mitosis resulting in the grown ups we are now. Over division results in growth of cancer cells. And if the body exercises, Lymphocytes are produced more, resulting in more of them circulating in blood preventing disease attacks
3 0
3 years ago
Ruchi is preparing for class tomorrow, so she is reading about how neurons communicate. one of the first key terms she memorizes
Ket [755]

Answer;

-Neurotransmitters.

One of the first key terms she memorizes is neurotransmitters because these are the chemicals via which neurons communicate with each other.

Explanation;

-Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.

-Neurons are connected to each other through synapses, sites where signals are transmitted in the form of chemical messengers.


7 0
4 years ago
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