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vagabundo [1.1K]
3 years ago
14

A theory has been rigorously tested. True False

Biology
2 answers:
Ludmilka [50]3 years ago
5 0
I think The answer is True
Nitella [24]3 years ago
3 0

Answer:

Yes for a theory to become valid it has to pass through serious tests and then be reviewed by other scientists in a scientific journal.

Explanation:

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How Do Sugar Molecules Cross the Cell Membrane?
Shalnov [3]

Answer:

The correct answer is - through facilitated diffusion and active transport.

Explanation:

Glucose is a six-carbon sugar molecule that is directly utilized by cells to provide energy. A glucose molecule is large enough to go through a cell membrane with simple diffusion.  

Cells help glucose molecules to cross the cell membrane through facilitated diffusion and active transport. Active transport is of two types primary and secondary active transport to help the glucose molecule to cross the membrane.

Thus, the correct answer is - through facilitated diffusion and active transport.

8 0
2 years ago
Which of the following is not true of mutations?
Fed [463]

The correct answer is D.

4 0
3 years ago
Mushrooms are part of which sphere?
Lady_Fox [76]

Answer:

biosphere is the answer bro

6 0
2 years ago
Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses o
katovenus [111]

Answer and Explanation: The figure below shows the doses of BPA administered to the female mice over time.

An experiment is used to determine cause and effect among variables. When the research is for the impact of a treatment, researchers randomly separate individuals in two groups:

  • <em><u>Control</u></em> <em><u>Group</u></em> doesn't receive any treament or a placebo or a treatment whose outcome is already known;
  • <em><u>Treatment</u></em> <em><u>Group</u></em> receives the treatment;

For the female mice on the image below, in the First Group is not injected any dosage of BPA, so they are the control group, while the <u>others</u> are <u>treatment group</u>.

The variables in a experiment are classified as independents or dependents:

  • <em><u>Independent</u></em> <em><u>Variable</u></em> is the cause;
  • <em><u>Dependent</u></em> <em><u>Variable</u></em> is the effect;

For the BPA research, since it is the effect of BPA over time on the mice's cells it is being investigated, <u>dosage</u> of BPA is the <u>independent</u> variable and <em>time</em> is the <em>dependent</em> variable.

6 0
2 years ago
¿Que aspecto debemos considerar para desidir el uso mas adecuado de lagunos materiales en la satisfacción de necesidades humanas
umka21 [38]

Answer:

El efecto del material sobre el medio ambiente es el aspecto a considerar.

Explicación:

Se debe verificar la estructura química del material o de qué elementos se forma un material para conocer el efecto de estos materiales en la salud y el medio ambiente de las personas. Si los materiales no afectan el medio ambiente y la salud humana, el ser humano puede utilizarlos para satisfacer sus necesidades. Si el material se forma a partir de elementos tóxicos o elementos que no se descomponen por microbios, entonces este tipo de materiales son peligrosos tanto para la salud humana como para el medio ambiente porque estos materiales contaminan el medio ambiente y debido a esta contaminación la salud humana se ve gravemente afectada.

3 0
2 years ago
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