BIOLOGY HIGH SCHOOL

Which of these processes are necessary for roots to be able to take up water and minerals?a. Passive transport and diffusion
b. Active transport and osmosis
c. Respiration and evaporation

Answers

Answer 1
Answer: Roots of plants take up water and minerals from the roots via the medium of passive transport and diffusion. The facilitated diffusion of mineral ions into the root cells requires specific channel proteins in the membranes. The uptake of mineral ions in the plant cells is influenced by electrical gradient, concentration gradients, ionic balance and pumping of hydrogen ion.

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A plant is starting to fall over because the plant can no longer support its own weight. Students want to find out why this is happening. Which of the following is a good hypothesis for their experiment?a. The plant is producing cellulose molecules.b. The plant is not producing simple sugars to support its structure.c. The polysaccharides in the plant are breaking down.d. The glucose molecules in the plant are breaking down.
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Most medicines have secondary symptoms called side effects.

Answers

True, most drugs have side effects which are usually undesirable to the user.

During ____ of meiosis, sister chromatids are seprated and pulled to opposite ends of the cell

Answers

It is during anaphase I of miosis that the sister chromatic are separated and pulled to the opposite sides of the cell

What is the chemical equation for cellular respiration?

Answers

Correct answer is:

C_(6)H_(12)O_6+6O_(2)\Rightarrow 6CO_(2)+6H_(2)O+energy

But how to get there?

Let's start with simple explanation of what exactly is cellular respiration.

Cellular respiration is a multistage biochemical oxidation process of organic substances when prime product is energy (ATP - adenosine triphosphate) and other are released waste products. 

Cellular respiration takes place even if other metabolic processes are stopped, but cellular respiration may differ in particular organism groups.

Some reactions during whole process of cellular respiration are similar in all types of living organisms.

Cellular respiration is prime indication of declining living processes.

Only viruses which are on the edge of living organism and chemical particle are not performing cellular respiration.

But to the point :P

In cellular respiration all substrates which are in the cell might be organic, but mostly we are using sugar oxidation - glucose in the presence of oxygen. 

Chemical formula of sugar looks like this:

C_(6)H_(12)O_6

Oxygen is just O_2

so for now we have just part of the equation:

C_(6)H_(12)O_6+O_(2)\Rightarrow

But what would be on the right hand side?

It's quite simple, remember equation of full combustion? If we want to burn something we need oxygen like in the equation, so the product of this equation would be carbon dioxide, water and of course energy (ATP).

Carbon dioxide formula looks like this:

CO_(2)

As a reminder water formula:

H_(2)O

Full formula would look like that:

C_(6)H_(12)O_6+O_(2)\Rightarrow\ CO_(2)+H_(2)O+energy

But still as you see this equation is unbalanced, after balancing it would like that:

C_(6)H_(12)O_6+6O_(2)\Rightarrow 6CO_(2)+6H_(2)O+energy

At the end I would like to explain one more thing. Energy which has been released during this process is part of high-energy connection which might be used to perform chemical reactions in the cell or to move organism for example in muscles. We need to remember that production of ATP is not happening with 100% efficiency and part of this energy is released as heat.
C_(6) H_(12) O_(6) +6O_(2) ---\ \textgreater \ 6CO_(2) +6H_(2) O+ENRGY

Which experiment should be conducted as a field investigation?

Answers

Assuming that this is referring to the same list of options that was posted before with this question, the correct answer is that any experiment that requires direct observation. 

What are the errors in the table? Check all that apply.ER should be in both animal and plant cells.

Golgi body should be in animal cells only.

Lysosomes should be in animal cells only.

Nucleus should be in plant cells only.

Ribosomes should be in plant cells only.

Vacuoles should be in both animal and plant cells.

Answers

Answer:

ER should be in both animal and plant cells.

Vacuoles should be in both animal and plant cells.

Explanation:

Just believe in me

Answer:

ER is found in both animals and plants

Explanation:

the endoplasmic reticulum is found in both cells of animals and plants

Bright-field microscopes are used for most microscopic work. True or false?

Answers

Answer:

The correct answer will be option-true

Explanation:

A bright-field microscope is an optical instrument widely used by students and researchers all over the world.

The bright-field microscope is a compound light microscope which uses the light to see the samples. In the microscope the samples appear darker in color on the bright or light-coloured background.  This enables the viewer to clearly see the sample in the microscope.

Thus, true is the correct answer.
true, Bright-field microscopes are used for most microscopic work.
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