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nikklg [1K]
3 years ago
12

The two strands of a dna molecule are joined to each other through _____.

Biology
1 answer:
sergij07 [2.7K]3 years ago
6 0

non-covalent bonds ( hydrogen bonds)

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The three main organs of seed plants are roots, leaves, and ____.
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The three main organs of seed plants are roots, leaves, and C) MERISTEMS


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3 years ago
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Biotechnology is the use of _______ to improve products and processes.
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All of the above

Biotechnology is the application of biology to technology. This technique combines the two disciplines together to formulate a better integrative system of functioning mechanisms for further medicine and other purposes. 
<span>Cloning is a type of biotechnology wherein a specific subject or living subject is copied at the same DNA level -morphology, physiology and organismic whole hence, identically similar with one another when two subject are produced. </span>

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4 years ago
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1) Discuss two neurotransmitters and their functions? 2) The central nervous system is comprised of what two structures? 3) What
wariber [46]

Answer:

1. dopamine and serotonin

2. brain and spinal cord

3. controls the function of different processes in the body  

4. limbic system

5. Increase brain surface area  

6. release hormones into the bloodstream

7. insulation  

8. laughing has multiple positive functions in the body

Explanation:

Dopamine is a neurotransmitter (i.e., a chemical messenger) involved in responses to rewards, motivation and memory, while serotonin is another neurotransmitter that controls appetite, mood, wakefulness and sleep onset. The central nervous system (CNS) consists of the brain and spinal cord. The spinal cord acts as a conduit by which messages are sent from the brain to the body and from the body to the brain.  Moreover, the brain acts to control all body abilities (e.g., thinking, talk, feeling, walking, breathing, etc). The autonomic nervous system is known to modulate different processes (e.g., blood pressure, digestion, breath) and internal organs (e.g., heart) by acting largely unconsciously, i.e., without a person's conscious effort. The limbic system is a part of the brain that acts to control emotions and memory by modulating autonomic/endocrine functions. Convolutions, folds, and fissures can increase brain surface area, thereby more neurons are packed into the cortex of the brain and thus it is possible to process more information. The endocrine system acts to release hormones into the bloodstream. These hormones travel in the blood to their target cells/tissues, where they regulate different functions (e.g., mood, growth, development, metabolism, reproduction, etc). The myelin is an insulating layer surrounding nerve cells that enables electrical impulses to transmit efficiently around the whole body. Laughing has multiple positive functions: release endorphin hormones that decrease stress, increases the number of immune cells and antibodies, stimulate the activity of internal organs (e.g., heart), quickly relax the muscles, contribute to increase the oxygen uptake rate in blood, etc.

8 0
4 years ago
The amount of atmospheric
Viktor [21]

Answer:

The amount of atmospheric oxygen is more than the amount of dissolved atmospheric oxygen in water.

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The oxygen which is present in the atmosphere is much higher than the oxygen which is present inside the water. About 21 percent of oxygen is present in the atmosphere while only 1 percent of atmospheric oxygen is dissolved in the water. Oxygen is higher in atmosphere because this oxygen is used during respiration of organisms. If concentration of dissolved oxygen is very high, the marine animals die.

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3 years ago
Drag each item to the correct location on the table.
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Answer:

While she spoke she turned a silver bracelet round and round her wrist.

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One evening I went into the back drawing-room in which the priest had died.

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There's no doubt that you can see the bread, you can

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solid as your own arm. But can you trust it? Can you eat it?

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SECOND PERSON POINT OF VIEW

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3 years ago
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