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olya-2409 [2.1K]
3 years ago
9

What two conditions must be present for osmosis to occur?

Biology
1 answer:
slamgirl [31]3 years ago
6 0
A concentration gradient and membrane that allows water to pass, but not the solute, must be present
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Which of the following is not a part of DNA extraction?
aev [14]

Answer:

D

Explanation:

Extracting DNA involves firstly harvesting the required cells (such as from the inside of cheeks), then the cells are broken up using enzymes or detergents. The products (usually a mixture of cell products –mainly RNA, DNA, and proteins) are then put in a centrifuge to separate the proteins from the DNA.

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3 years ago
Groups of cells that are similar in structure and perform a common or related function form a(n) ________.
ankoles [38]

Answer: tissue

Explanation:

All living organisms are made up of one or more cells. For example, unicellular organisms, such as amoebas, are made up of only one cell. Multicellular organisms, such as human beings, are made up of many cells. And cells in complex multicellular organisms  are organized into tissues,  which refers to similar groups of cells that work together on a specific task.

7 0
3 years ago
Cells Writing Prompt #1
Andreyy89

Answer:

popcorn kernels aren't living things

Explanation:

characteristics they have that show proof they are living organisms:

• movement when exposed to heat

• irritability/sensitivity since they react to change of temperature

• growth since when they are exposed to high temperatures they grow and become bigger

We can determine if they are living or not by:

• seeing if they respire

• seeing if they need nourishment

• seeing if they can excrete

• seeing if they can reproduce

In conclusion they aren't living things

8 0
3 years ago
When the stress response is initiated, changes come about because of the activation of a branch of the nervous system called the
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autonomic nervous system

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What is true about both the epidermis and the dermis?
kolbaska11 [484]
The two subjects are both dealing with flesh, the human skin
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