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AfilCa [17]
3 years ago
10

Can someone help me with this question?

Biology
1 answer:
S_A_V [24]3 years ago
3 0

For #1 im not sure but the amino acids are held together with peptide bonds. For #2 The primary structure of a protein is when the amino acids are in a chain bonded with peptide bonds. This is just a string of amino acids which will then form into a sheet and combine to form a full protein

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Use the drop-down menus to label the organelles in the picture to the right label A
Sergeu [11.5K]
<h3><u>Answer;</u></h3>

Label A; Mitochondria.

Label B; Nucleus.

Label C; Golgi apparatus.

Label D; Rough endoplasmic reticulum

<h3><u>Explanation;</u></h3>
  • All the above are various organelles in a eukaryotic cells each carrying different cellular activity to enhance the functioning of a cell.

Label A; Mitochondria.

  • <u>Mitochondria</u> is the powerhouse of the cell which converts glucose to energy rich molecules of ATP, through the process of cellular respiration.

Label B; Nucleus.

  • <u>Nucleus</u> contains the genetic material or DNA, RNA , nucleolus, chromatin fibres and proteins. It contains the chromosomes which control the hereditary characteristics.It also regulates all the activities of the cell.

Label C; Golgi apparatus.

  • <u>Golgi apparatus;</u> they are also called Golgi bodies. They function in modifying, sorting and packaging of proteins for secretion. They are also involved in the transport of lipids around the cell, and the creation of lysosomes.

Label D; Rough endoplasmic reticulum

  • <u>The rough endoplasmic reticulum</u> provides surface for protein synthesis. It is also used to transport cellular contents from one cell to another.
  • The risbosomes attached on the rough endoplasmic reticulum are resposible for the protein synthesis through the process of translation.

7 0
3 years ago
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The Silurian period occurred
enot [183]
The Silurian period occurred before the Neogene period.
I hope this helps.
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3 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
3 years ago
How does the structure of a neuron relate to its function in the body?
alekssr [168]

The neurons conduct impulses over relatively long distance in the body. This is facilitated by their long cytoplasmic extensions

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Where do light dependent reactions occur
noname [10]
Thylakoid membranes.
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