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3 years ago

- Which of the following correctly describes the transport of materials across a cell membrane?

1 answer:

4 0

Answer: passive transport requires chemical energy to move nutrients from areas of low concentration to areas of high concentration

Explanation:

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What is a cell and atom

Leto [7]

Answer:

The key difference between cell and atom is that a cell is made of molecules whereas atoms make up molecules. Cells are the smallest functioning unit in a living organism. ... Hence, an atom is the smallest unit of matter.

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3 years ago

PLEASE HELP

Elan Coil [88]

Answer:

The disease is caused by the ciliate protozoan Ichthyophthirius multifiliis, commonly called ich or ick. Fish infected with ich typically develop small, blister-like, raised lesions (white spots) on the skin and/or fins.

Explanation:

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3 years ago

Based on this information, scientist could predict that the base _____ pairs with ______ and the base

Gelneren [198K]

Based on this information, scientist could predict that the base $\boxed{ adenine }$ pairs with $\boxed{ thymine }$ and the base $\boxed{ cytosine }$ pairs with $\boxed{ guanine }$ in the formation of the DNA molecule.

$\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘$

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3 years ago

terry physics pushes a 75kg lab cart so that is accelerates from rest with a velocity of 4.4m/s in 3.1 secounds. what is the for

svetlana [45]

106.5N

Explanation:

Given parameters:

Mass of cart = 75kg

Velocity = 4.4m/s

time taken = 3.1s

Unknown:

Force = ?

Solution:

To solve this problem, we are going to apply newton's second law of motion. The law states that "the acceleration of a body is directly proportional to the force on the body and inversely proportional to the mass".

F = m x a

F = force on body

m = mass of body

a = acceleration of the body

But we know that acceleration is the change in velocity with time of a body;

a = $\frac{change in velocity }{time}$

F = m x $\frac{V}{t}$

V is the velocity

t is the time taken

F = $\frac{75 x 4.4}{3.1}$ = 106.5N

learn more:

Newton's law brainly.com/question/11411375

#learnwithBrainly

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3 years ago

Which of these provides the best evidence for the plate tectonic theory? (5 points)

kirza4 [7]

Answer:

Seafloor spreading at the mid-ocean ridge provides the mechanism for tectonic plate movement. The Earth's mantle moves through convection, showing that tectonic plates are able to glide. The location of the plates was determined by locating their boundaries, using data on the Earth's magnetic field.

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3 years ago