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valkas [14]
3 years ago
13

When we think about the effects of air pollutants we immediately think of respiratory issues. Exposure to one criteria

Biology
1 answer:
myrzilka [38]3 years ago
5 0

Explanation:

This pollutant is ozone, carbon dioxide, sulphur dioxide, carbon monoxide.

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Sort the following events into two categories:________.
Amanda [17]

Answers:

a) carcinogenic

b) anti-carcinogenic

c) carcinogenic

d) carcinogenic

e) carcinogenic

f) anti-carcinogenic

g) anti-carcinogenic

h) anti-carcinogenic

Explanation:

Cyclins are proteins that regulate the progression through the cell cycle, i.e., the transition of G1 to S phase. It is well known that high cyclin expression may lead to cell proliferation states, which is closely associated with cancer progression. Moreover, the blockage of cyclins may have an anti-carcinogenic effect by inhibiting the progression through the cell cycle. MAP kinases are serine/threonine kinases that regulate the progression through the cell cycle by phosphorylating a variety of substrates during cell proliferation. In consequence, phosphatases that inactivate MAPK kinases (i.e., by dephosphorylation) may have an anticarcinogenic effect. The p53 is a tumor suppressor protein involved in diverse cellular processes including DNA repair, cycle arrest and programmed cell death. This protein (p53) is activated by phosphorylation at target residues and phosphatases inactivate it, thereby the blockage of its degradation may have an anticarcinogenic effect. Oncogene activation (i.e., the expression of oncogenes), may alter diverse cellular processes including DNA replication, and thereby may lead to cancer development. The G-protein α subunit is a GTPase that hydrolyses GTP and thus has a major role in controlling the kinetics of the G-protein signaling cascade. Platelet-derived growth factor receptors (PDGFR) are kinase receptors that play roles in regulating cellular differentiation, cell proliferation and cell growth. PDGFR receptors are present on the surface of normal cells, however, it has been shown that mutations of the PDGFR genes that lead to their high expression lead to uncontrolled cell growth and consequently cause cancer (i.e., by increasing PDGF signaling).

5 0
2 years ago
What structure is found outside the cell membrane and provides protections and support to the cell?
Lyrx [107]
I believe that would be the cell wall
6 0
2 years ago
Read 2 more answers
Which of the following is a common renewable resource found in deserts
frez [133]

Minerals

Explanation:

Minerals can be found in the cactus and ground and are very resourceful

3 0
2 years ago
What is the answer hurry
IRINA_888 [86]
I think the answer would be pesticides... i see you selected it though. was that a wring answer?
8 0
2 years ago
To reduce erosion On steep slopes people can A plant vegetation B insert drainage C build walls D all of the above ?
Mariana [72]
The correct answer is D. "All of the Above."
5 0
3 years ago
Read 2 more answers
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