Jennifer explained that an

Biology

2 answers:

mel-nik [20]3 years ago

5 0

Jennifer explained that an apple is really good for you because it has vi tams your body needs.

borishaifa [10]3 years ago

4 0

There is a lot of things she could do.

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You have found a new organism and need to classify it. It has no nucleus and was found living several feet below in an ice sampl

miv72 [106K]

Answer:

Bacteria

Explanation:

Unicellular organisms that lack nucleus or chlorophyll hence are neither plants or animals are classified as Bacteria.

They are known to survive extreme environment such as saline , extremely hot or cold environment.

The new organism had been found several feet below in an ice sampe. This is an extremely cold only a Psychrophillic organism can survive here. The organism is most likely to be classified as a Bacteria .

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4 years ago

How does mitosis in plant cells differ from that in animal cells? A. Plant cells lack spindle fibers. B. Plant cells lack centro

Nataly [62]

B. plant cells do not have any centromeres in their cells. Also plant cells have a cell plate, but animal cells do not.

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3 years ago

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Distinguish between the terms weather and climate, and briefly discuss how the understanding of these terms can affect public un

bekas [8.4K]

Weather refers to short term atmospheric conditions while climate is the weather of a specific region averaged over a long period of time. Climate change refers to long-term changes.

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3 years ago

Which cell type would you find in a flower?

Grace [21]

Answer:

Summary. Plants have eukaryotic cells with large central vacuoles, cell walls containing cellulose, and plastids such as chloroplasts and chromoplasts. Different types of plant cells include parenchymal, collenchymal, and sclerenchymal cells. The three types differ in structure and function.

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3 years ago

The heart is a cone-shaped muscular organ located within the ________ of the thorax. its apex rests on the ___________ and its s

Arte-miy333 [17]

The heart is a cone-shaped muscular organ located within the mediastinum of the thorax.

The mediastinum is the space lined with membranous tissue between the lungs. The mediastinum contains not only the heart but also the great vessels (pulmonary artery, aorta, pulmonary veins, and the superior and inferior vena cava), as well as parts of the esophagus and the trachea.

Its apex rests on the diaphragm and its superior margin lies at the level of the 2nd rib.

The apex of the heart is the conical area created by the confluence of the ventricles, but mainly by the left ventricle. It rests on the diaphragm. The superior margin of the heart, also known as the base, lies at the level of the second rib.

Approximately two-thirds of the heart mass is seen to the left of the midsternal border.

This is because to the left of the midsternal border lies the left ventricle which comprises most of the heart mass as the left ventricle is the one responsible for pumping blood throughout the systemic circulation and significant pressure should be overcame; resulting to the physiologic hypertrophy of the left ventricle.

The heart is enclosed in a serosal sac called the pericardium. The loosely fitting double outer layer consists of the outermost fibrous pericardium, lined by the parietal layer of the serous pericardium.

The pericardium is one of three layers of the heart (other ones being the myocardium and the endocardium); and is the outer layer of the heart. The pericardium is composed of two tissues, the fibrous pericardium and the serous pericardium. The pericardium functions to lubricate the movement of the heart by the action of the pericardial fluid.

The heart has four chambers. Relative to the roles of these chambers, the atria are the receiving chambers, whereas the ventricles are the discharging chambers.

The four chambers of the heart are namely the right atrium, right ventricle, left atrium, and the left ventricle. Venous blood goes to the right atrium via the vena cavas then to the right ventricle via the tricuspid valve; then to the pulmonary circulation via the pulmonary artery where it will be oxygenated. From the pulmonary circulation, the left atrium will receive the oxygenated blood via the pulmonary veins then to the left ventricle via the mitral valve where it will be pumped to the systemic circulation via the aorta.

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3 years ago