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Shtirlitz [24]
3 years ago
11

What are stem cells?

Biology
1 answer:
OlgaM077 [116]3 years ago
6 0

Stem in plants:

Is the movement of material like water and minerals from roots to leaves. And they storage foods.

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All living things have DNA in their cells, but not all living things have ribosomes.
Jobisdone [24]

Answer:

False

Explanation:

All living things need ribosomes, they are the ones that do the translation of the RNA to form proteins which are essential for the cell to live and to reproduce. Without them the cell will accumulate damage and die in a short period of time due to the fact that it lacks proteins that can act as enzymes, carriers, support of a structure, messengers, etc. In other words, Proteins are of vital importance for the cell and if there is no ribosome that can join the amino acids according to the mRNA sequence there will not be proteins.

3 0
3 years ago
Read 2 more answers
Some proteins on the surface of a mammalian cell contain carbohydrates. These proteins are synthesized by _______ and the sugars
sleet_krkn [62]

Answer:

c) Ribosomes on the rough endoplasmic reticulum; Golgi apparatus

Explanation:

Endoplasmic reticulum, a member of endomembrane system. If it contains ribosomes on their surface, they are called Rough Endoplasmic Reticulum (RER). RER is the site for protein synthesis.

Newly formed protein undergoes modification, one such modification is the addition of carbohydrate side chains to form glycoprotein. The protein then moves to the Golgi for modification.    

3 0
3 years ago
What type of major source of biochemicals is in plants needed for you're diet?
aksik [14]
Well, you have to focus on the main part, all organisms need minerals (nutrients).... so, just think about the vitamins that are needed for the body....sorry if it didnt help you, i had a similar question a while ago....it helped me!
8 0
3 years ago
If our visual perception depends only on the feature detectors in the visual cortex, what would we see?
Anika [276]

The sophistication of the visual cortex can be simplified through understanding that the neurons found in this region are distinguished by the kind of stimulus that each detects.

There are three major groups of feature detectors in visual cortex. These includes simple cells, complex cells and hypercomplex cells. The simple cells are the most specific since it responds to the geometric characteristics of the stimulus such as the lines of particular width, orientation, angle and position within the visual field. The complex cells are similar to simple cells. What differentiates one from the other is that they respond to the proper stimulus in any position within the receptive visual field. In addition, some of the complex cells respond to particular lines or edges moving in a specific direction opposite the receptive field. Lastly, the hypercomplex cells are responsive to the specific length of the lines. It is believed that the information from all feature detectors conjoin in to result in the visual stimulation perception.

3 0
3 years ago
How does human evolution or natural selection relate to the susceptibility of disease?
kykrilka [37]
Human evolution known to be a process in which species adapt to certain conditions of life, and in the battle of life and death, they are forced to become stronger in order to survive in this world. Diseases have always been present during the evolution, acting themselves as a natural selectors - the weaker organisms get sick and die. Not just humans, but all species have to establish a great protecting mechanism in order to survive. That is how our bodies are built, to be able to withstand and survive in the conditions we live in, and that is why our immune system has to be taken care of.  
4 0
3 years ago
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