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sineoko [7]
3 years ago
12

A complex multicellular organism has different levels of organization. What is the order of these

Biology
1 answer:
musickatia [10]3 years ago
5 0

Answer:

A complex multicellular organism has different levels of organization. What is the order of these levels?

OC cells, tissues, organs, organ systems

~batmans wife dun dun dun...

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Determine which of the following measurements is largest: 1800 centimeters, 2.1 meters, 0.0017 kilometers
fiasKO [112]

Answer: 1800 centimeters is the largest measurement

Explanation:

1800 cm = 0.018 km

2.1 m = 0.0021 km

0.0017 km is the smallest

8 0
3 years ago
Which of the following explains why animals need more food when it is cold?
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The proper function of the cardiovascular system relies on blood following the correct pathway through the heart. Valves within
Nadya [2.5K]

Answer:

The Mitral/Bicuspid Valve

Explanation:

The heart is composed of 4 chambers: left and right atria, and left and right ventricles. The “right heart” (right atrium and ventricle) receives deoxygenated blood from the systemic circulation through the Vena Cava, and impels this blood towards the lungs through the Pulmonary Arteries where it will be oxygenated. The “left heart” (left atrium and left ventricle) receives oxygenated blood from the pulmonary circulation through the Pulmonary veins and impels this blood towards the systemic circulation through the Aorta artery.

The systemic and pulmonary circuits work in series, and maintaining the unidirectional course of the blood flow is very important. This can be done by the presence of fibrous valves that are present between the atrium and the ventricles, and in between the ventricles and the Pulmonary/Aorta artery.

The location of these structures are as follows:

Systemic circulation ⇒ Right Atrium → [Tricuspid Valve] → Right Ventricle → [Pulmonary Valve] → Pulmonary Artery ⇒ Pulmonary circulation

Pulmonary circulation ⇒ Left Atrium → [Mitral/Bicuspid Valve] → Left Ventricle → [Aortic Valve] → Aorta ⇒ Systemic circulation

3 0
2 years ago
Krebs cycle Why is this process called a cycle
Afina-wow [57]

Answer:

Hope this helps

Explanation:

Why It's a Cycle

It is a cycle because oxaloacetic acid (oxaloacetate) is the exact molecule needed to accept an acetyl-CoA molecule and start another turn of the cycle

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