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Lostsunrise [7]
3 years ago
12

What enters the heart

Biology
1 answer:
max2010maxim [7]3 years ago
3 0

Answer:

Blood, the heart pumps oxygen-poor blood to the lungs to be oxygenated.

Explanation:

:) Merry Christmas!

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I need help please!
wolverine [178]

Answer:

50%

Explanation:

So the cross is hh x Hh

Making a punnet square would get Hh,hh,Hh,hh

The percent of babies that will have Hh is 50%

4 0
3 years ago
Explain why cell differentiation is an important part of the development of a multicellular organism.
Arturiano [62]
Cell differentitation is important because our body's need different type of cells to grow and also function
8 0
3 years ago
Receipt of extracellular signals can change cell behavior quickly (e.g., in seconds or less) or much more slowly (e.g., in hours
balandron [24]

Answer:

A. Molecular changes such as extracellular signals on extracellular ligands can result in quick changes in cell behaviour. One example is insulin. Upon insulin binding on the receptor on the cell membrane, the cell release GLUT4 transporters (for muscle cells) to increase uptake of glucose.

B. Slow changes in cell behaviour can be observed for other lipophilic hormones or intracellular receptors such as glucocoortoid or estrogen which reacts with receptors in the cells.

C. Insulin is required to maintain a constant blood glucose level and hence levels of insulin has to be mediated in correspondence to the blood glucose levels. Fast acting signalling is thus required for homeostasis of blood glucose levels. Where for such lipophilic hormones such as steriods, glucocortoid, these hormones tend to have a longer lasting effect and hence results in a slow change.

6 0
3 years ago
ZWhat Organelle that conducts respiration for the cell
baherus [9]

Answer:

The organelle that conduct respiration for the cell is MITOCHONDRIA.

Explanation:

The cells of living organisms are made up of different organelles, each of the organelles have specific functions, which they perform. The mitochondria is the cell organelle that is responsible for carrying out respiration in the cells. Respiration involves the breaking down of glucose molecules in order to produce energy in form of ATP. Mitochondria is also called the power house of the cell because of its function of energy production.

8 0
3 years ago
10. Which type of homeostatic mechanism is the most common in the human body?
natima [27]

Answer:

Explained below:

Explanation:

Type of homeostatic mechanism in the human body which is most common is the maintenance of body fluids, dilute and solutions of water that carry liquefied chemicals found in internal part of the cell and the surroundings of them. the internal part of the cells, it is named as intracellular fluid, the external part of the cells, it is named as extracellular fluid. All the materials such as oxygen, nutrients, proteins, and ions, are needed for survival.

8 0
3 years ago
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