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Zielflug [23.3K]
3 years ago
14

You are a scientist who studies the ecological interactions between parasitic orchid plants and their host plants. you are inter

ested in examining how these orchids affect their respective host plants' ability to conduct photosynthesis.
Biology
1 answer:
Lana71 [14]3 years ago
4 0
Parasite is infection into leafs so leaf photosynthesis disorder
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Which action would best demonstrate that a scientist is being creative?
xxMikexx [17]

Answer:

taking a closer look at the natural world

Explanation:

using prior knowledge is basic common sense. so no.

requiring evidence and thinking logically is following a rule. so no.

following strict rules when using human test subjects. right off the bat, "strict rules" is an immediate no.

taking a closer look at the natural world. that's creative because they look for the answer around them.

4 0
3 years ago
Identify the way that leptin produced by fat cells of adipose tissue in the abdomen can send a signal to the neuroendocrine cell
Luda [366]

Answer:

Leptin is a protein hormone composed of 167 amino acids of the cytosine family, it is synthesized mainly by white adipose tissue. The leptin receptor is related to that of receptors for cytosines (since it uses Janus or JAK type kinases and STAT-3 proteins as intracellular mediators of transcription pathway), it is predominantly found in the hypothalamus (particularly in the arcuate nucleus and to a lesser extent in the nuclei dorsomedial and ventromedial), hippocampus and cerebellum. There is evidence that leptin acts at the level of the arcuate nucleus, preventing the formation of NPY.

Explanation:

Leptin is produced exclusively in adipose tissue cells in a wide variety of species, including humans, and its concentration is higher in overweight than in lean individuals. The biological actions of leptin can be classified into two groups, those that are exerted in the tissues of the central nervous system, mainly the hypothalamus, and those that are carried out on the peripheral tissues. The former regulate body weight downward, decrease food intake, increase basal energy expenditure and modify some neuroendocrine functions such as reproduction, while the latter have effects on proliferation, differentiation and metabolism of peripheral tissues. The leptin that reaches the hypothalamus, in addition, inhibits protein synthesis and the secretion of neurons producing NPY / AgRP of the arcuate nucleus and stimulates the synthesis and secretion of those containing POMC. NPY (neuropeptide Y) is produced in the hypothalamic arcuate nucleus. This neurotransmitter arrives through the projections of the neurons of said nucleus to the paraventricular nucleus, which is the area where it is released. There are several studies that have shown that an increase in NPY leads to an increase in the sensation of hunger and thus to hyperphagia and obesity. Leptin acts at the level of the arcuate nucleus, preventing the formation of NPY. The leptin receptor lacks enzymatic activity in its intracellular domain. Instead, it is linked to members of the janus kinase family, which belong to a class of tyrosine kinases. The binding of the ligand activates the Jak kinase and leads to the phosphorylation of certain cytoplasmic proteins. Within these proteins there is a class of cytoplasmic transcription factors called signal transducers and activators of transcription (STAT).

5 0
3 years ago
What are the six characteristics of living things
maks197457 [2]

The seven characteristics of life include:

1.  responsiveness to the environment;

2. growth and change;

3. ability to reproduce;

4. have a metabolism and breathe;

5. maintain homeostasis;

6. being made of cells; and.

7. passing traits onto offspring.


7 0
4 years ago
State the differences between organic<br>matter and inorganic fertilizer​
adoni [48]

Answer:

The organic matter is all natural came from the earth. But on the other hand, inorganic fertilizer is not natural it is chemical to make the grass more rich and healthy and they already stored all the nutrients in the fertilizer so it can work. I hope I helped

4 0
3 years ago
Compare the nitrogen, carbon, and oxygen cycles
Kamila [148]
The main difference is the way how the three of those cycles are performed. For example, as nitrogen is abundant then it cannot be used by plants or animals in its gas form. The Carbon cycle does not need an especial process like the one of the Nitrogen. Plants can take carbon dioxide and is used for the photosyntesis process. All three cycles are found in soil. Oxygen cycles recycles the oxigen. 
7 0
3 years ago
Read 2 more answers
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