BIOLOGY HIGH SCHOOL

The two types of cell cycle genes that, if mutated, cause cancer cells to divide uncontrollably are called tumor suppressor genes andA. growth factors.
B. proto-oncogenes.
C. cancer genes.
D. telomeres.

Answers

Answer 1
Answer:

Answer:

The correct answer is option B. "proto-oncogenes".

Explanation:

Tumor suppressor genes and proto-oncogenes are two types of genes that can cause the development of cancer cells if they suffer a mutation. The main difference between tumor suppressor genes and proto-oncogenes is the way they cause cancer. If tumor suppressor genes are inactivated they produce cancer cells, while if proto-oncogenes are activated is when they produce cancer cells.
Answer 2
Answer: Tumor suppressor genes and proto-oncogenes cause cancer cells to divide uncontrollably.

The answer is B) proto-oncogenes.

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All taxonomic systems of classification use five kingdoms.

True
False

Answers

the answer for this is false

Which biome occurs in the united states and once contained huge herds of grazing herbivores

Answers

Answer:

Temperate grassland biome  

Explanation:

The temperate grasslands are referred to the biome which is comprised of vast grasslands, being the most dominant type of vegetation in the United States. There is less amount of plants and trees in this biome, and they have cold winters and hot summers. There occurs comparatively less amount of rainfall in this region that controls the height of this grasslands. The soil here is rich in nutrients that favors the growth of these vast grasslands.

This grasslands are divided into two types, namely-

(1) The Prairies- These are the grasslands that are comprised of tall grasses.

(2) The Steppe- These are the grasslands that are comprised of short grasses.
I have 2 answers: 
answer 1: Its grassland because the grasslands have lots of grass and plants right?? So then herbivores would go there and start devouring grass and plants and stuff like that.

answer 2: It can also be the rain forest because the rain forest has lots of fruit such as bananas and mangoes. Monkeys eat hem and other animals do to like us...except we don't live in the rain forest.

6. Air sacs in the lungs through which oxy-gen
and carbon dioxide diffuse into and
out of the blood are the​

Answers

Answer: Alveoli

Explanation: Alveoli is the air sacs in the lungs through which oxygen and carbon dioxide diffuse into and out of the blood.

How many amino acids cannot be made by the body so they must be obtained in the diet

Answers

the amount of amino acids taht cannodt be made by the body so they must be obtained in diet are : 9 amino acids Those acids are : - Histidine - Isoleucine - Leucine - Lysine - Methionine - Phenylalanine - Threonine - Tryptophane - and Vline

Which of the following aspects of the environmental movement addresses the public’s right to intervene in environmentally damaging activities on private land?a. environmental justice
b. environmental sociology
c. environmental law
d. environmental activism

Answers

"d. environmental activism" is the aspect of the environmental movement that addresses the public’s right to intervene in environmentally damaging activities on private land, since people can organize for change. 

Which of the following organisms does not have a cell wall?a. plant
b. human
c. bacteria
d. fungi

Answers

Answer:

The answer is B. human.

Explanation:

Humans are classified in the species Homo sapiens belonging to the animal kingdom, whose cells are all eukaryotic cells that have isolated nucleus and nucleus membrane.

The eukaryotic cells of Animal make up animal tissues and differ from plant cells in that they lack cell walls and chloroplasts and have smaller and generally more abundant centrioles and vacuoles. Due to the lack of rigid cell wall, animal cells can take a variety of forms and can even phagocyte other structures.
humans do not have a cell wall we just have a cell membrane
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