Which of the following could have been components of membranes that covered pre-cells in ancient earth

Biology

1 answer:

Aleksandr-060686 [28]3 years ago

4 0

Nothing because there are no pre cells

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Describe the atp molecule and it's function with in a cell

kondor19780726 [428]

ATP allows for the cell to use up energy to stay alive such as active transport to receive nutrients and let out vesicles such as proteins

4 0

4 years ago

An astronomer states that Star P has a lower absolute brightness than Star Q. How would you translate this observation for a non

aleksandr82 [10.1K]

Answer:

Star P is smaller than star Q

Explanation:

Absolute brightness is defined as brightness of a celestial object or star from a Standard distance usually taken as 10 parsecs from Earth. If one star is brighther than the other then there can be two variable playing major role given that they are at same distance –

a) composition of star and

b) Its size.

The larger the star, the more energy it will emit per second and hence more will be its absolute brightness.

Thus, star P is smaller than star Q

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3 years ago

How can a liquid be drawn into a pipette safely?

Reptile [31]

Answer:

By squeezing a bulb attached to the wide end of the pipette

Explanation:

You squeeze the bulb and place it on the wide end of the pipet. Then you place the tip of the pipet in the solution and release your grip to pull it into the pipet.

B is wrong, unless you want to accidentally get a mouthful of the sulfuric acid or cyanide you are pipetting.

C and D are wrong. Even the wide end of a pipette is too narrow to fill with either a beaker or an eyedropper.