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Pavlova-9 [17]
3 years ago
5

A__ is a Chemical substance the organisms require to live

Biology
2 answers:
Anastasy [175]3 years ago
5 0
I thinks it is a NUTRIENT
ycow [4]3 years ago
3 0
The answer is nutrient
                           ~emily
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Bill has a perfect cube of an unknown substance. The density of the substance is 3.0 g/cm. He
Gwar [14]

The volume of the cube of unknown substance is 27\ cm^3. The length of one side of the cube is 9 cm

<u>Explanation:</u>

As per the formula of mass and density, Mass / Density equals to volume. Therefore as the mass of the cube was given to be 81 g and the density of the cube is known to be 3.0 g/\mathrm{cm}^{3},, to help Bill find out the volume. It is the ratio of mass and density and can be calculated as

      \text {volume}=\frac{\text {mass}}{\text {density}}=\frac{81 g}{3 g / \mathrm{cm}^{3}}=27 \mathrm{cm}^{3}

As it is a cube, the volume is product of length, breadth, and height. Here, all sides are same as it is the cube.

        volume= length \times breadth \times height

       27=3 l

      length of cube's one side, l=\frac{27}{3}=9 \mathrm{cm}

7 0
3 years ago
What are the four bases of DNA?
koban [17]
AGCT. Adenine, Guanine, Cytosine, Thymine.
4 0
3 years ago
Read 2 more answers
8. Which is true of the light reaction of photosynthesis?
Murljashka [212]
I believe it is B but I’m not 100% sure
8 0
3 years ago
Mary is an adolescent who currently has a small pimple on her cheek that is causing her to be overly self-conscious. She is conv
nordsb [41]

Answer:

imaginary audience

Explanation:

Imaginary audience is a state in which an individual, most especially growing adolescent, are preoccupied with excessive and exaggerated belief and thought that they are the main focus of other people’s attention, and as such become worried unnecessarily and overtly self-conscious. The individual often feels they are the center focus of discussion of other people.

6 0
2 years ago
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A student hypothesized that EC growth might be affected by the DNA from circulating erythrocytes. Is this student’s hypothesis r
kykrilka [37]

Answer: The options are not given, here are the options.

A) No the DNA in circulating erythrocytes ins needed to help transport O2 through the capillaries

B) No circulating erythrocytes contain DNA.

C) Yes DNA is responsible for cell division in most cells

D) Yes circulating erythrocytes carry DNA nutrients through the capillaries

The correct option is B.

No circulating erythrocytes contain DNA.

Explanation:

Erythrocytes or red blood cells is a biconcave disc that contain haemoglobin which help to carry oxygenated blood in the body.

Circulating erythrocytes do not contain dna because they lack nuclei and organelles, cannot synthesize any RNA, therefore cannot divide and have limited repair capabilities.

Because they cannot carryout protein synthesis, no virus can evolve and invade the red blood cells.

5 0
3 years ago
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