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barxatty [35]
3 years ago
15

A hypothesis becomes a theory:

Biology
1 answer:
Setler [38]3 years ago
3 0

Answer:

B. after scientist experiments to test a hypothesis produce the same results

Explanation:

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Which surfaces of both lungs bear grooves that mark the positions of the great vessels and the heart
Sati [7]
Mediastinal
Explanation:
8 0
3 years ago
How are science and technology related
o-na [289]
Science<span> is the study of the natural world by collecting data through a systematic process called the </span>scientific<span> method. And </span>technology<span> is where we apply </span>science<span> to create devices that can solve problems and do tasks. </span>Technology<span> is literally the application of </span>science<span>. So, it really is impossible to separate the two.</span>
4 0
4 years ago
Look at the two images of cells.
BartSMP [9]

Explanation:

A)Image A represents a peptide hormone that interacts with a receptor, and image B represents a steroid hormone that interacts with the cell’s DNA

The endocrine system involves chemical signalling via the secretion of molecules called hormones into extracellular fluid.

  • Steroid hormones are lipophilic, and readily diffuse across cell membranes. They bind to receptors in the interior of the cell to form a complex which regulates gene expression.
  • Peptide hormones however,are hydrophilic, and thus cannot readily diffuse across the membrane. They remain outside the cell, binding to receptors which then activate secondary messenger signalling and a subsequent cellular response.

Further Explanation:

Hormones bind to chemical receptors in order to cause specific changes in target cells, these lead to changes in the body's internal environment called homeostasis. It includes the thyroid, parathyroid, pituitary, pineal and adrenal glands along with other regions.

The bone, adipose tissue, heart, pancreas and liver are a few of the regions of the body which show endocrine function. The brain, or control center functions to receive and process the information from the receptor. Effectors receive the control center's command and elicits a response in the form of a feedback loop, that may oppose or enhance the stimulus.

Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.

Learn more about homeostasis at brainly.com/question/1601808

#LearnWithBrainly

8 0
3 years ago
Atoms are not changed in a reaction. They are just ____________________
Sphinxa [80]

Answer:

<u>rearranged</u>

<u />

Explanation:

Atoms are the most basic unit of matter that makes up elements. Atoms are made up of electrons orbiting a nucleus comprising protons and neutrons.

The<u> atomic numbe</u>r, is defined as the number of protons in an atom, while the <u>atomic mass</u>, is the number of protons and neutrons.

In reaction, atoms are not created or destroyed, the atoms simply become rearranged in new formats; molecules are two or more atoms bonded together. Different molecules can join together to form compounds.

8 0
3 years ago
What determines the sex of an organism?
lorasvet [3.4K]
I believe it would be the chromosomes of X and Y. XX is Female and XY is Male.
4 0
3 years ago
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