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2 years ago

Cell membranes have each of the following functions EXCEPT-

Biology

1 answer:

Genrish500 [490]2 years ago

3 0

Answer:

giving the cell a rigid, inflexible shape. That's th function of a cell wall

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Which of the phrases describe a chemical bond?

ikadub [295]

Answer:

Chemical bond is sharing of electrons between atoms

Explanation:

Hmm..well honestly, im not entirely sure what you want to know because you did not include the choices to select from but above is a phrase to describe a chemical bond.

7 0

2 years ago

NEED HELP ASAP

Romashka-Z-Leto [24]

Answer:

Explanation:

7 0

2 years ago

Energy flows through an ecosystem in one ____, from the sun or organic compounds to ____ and the to various ____ . ((HELP ME PLE

vlabodo [156]

Hi!

Energy will flow through an ecosystem in one direction, from the sun or inorganic compounds to autotrophs and then to various heterotrophs. 

The energy flow in an area will be delivering light energy to autotrophs, which make their food from the energy the sun produces.

The energy flow also delivers energy via inorganic compounds to heterotrophs, which do not make their own food.

Hopefully, this helps! =)

8 0

2 years ago

assume that life on Mars requires cell potential to be 100mV, and the extracellular concentrations of the three major species ar

svetlana [45]

Answer:

Explanation:

From the information given:

The cell potential on mars E = + 100 mV

By using Goldman's equation:

$E_m = \dfrac{RT}{zF}In \Big (\dfrac{P_K[K^+]_{out}+P_{Na}[Na^+]_{out}+P_{Cl}[Cl^-]_{out} }{P_K[K^+]_{in}+P_{Na}[Na^+]_{in}+ P_{Cl}[Cl^-]_{in}} \Big )$

Let's take a look at the impermeable cell with respect to two species;

and the two species be Na⁺ and Cl⁻

$E_m = \dfrac{RT}{zF} In \dfrac{[K^+]_{out}}{[K^+]_{in}}$

where;

z = ionic charge on the species = + 1

F = faraday constant

∴

$100 \times 10^{-3} = \Big (\dfrac{8.314 \times 298}{1\times 96485} \Big) \mathtt{In} \Big ( \dfrac{4}{[K^+]_{in}} \Big)$

$100 \times 10^{-3} = 0.0257 \Big ( \dfrac{4}{[K^+]_{in}} \Big)$

$3.981= \mathtt{In} \Big ( \dfrac{4}{[K^+]_{in}} \Big)$

$exp ( 3.981) = \dfrac{4}{[K^+]_{in}} \\ \\ 53.57 = \dfrac{4}{[K^+]_{in}}$

$[K^+]_{in} = \dfrac{4}{53.57}$

$[K^+]_{in} = 0.0476$

For [Cl⁻]:

$100 \times 10^{-3} = -0.0257 \ \mathtt{In} \Big ( \dfrac{120}{[Cl^-]_{in}} \Big)$

$-3.981 = \ \mathtt{In} \Big ( \dfrac{120}{[Cl^-]_{in}} \Big)$

$0.01867 = \dfrac{120}{[Cl^-]_{in}}$

$[Cl^-]_{in} = \dfrac{120}{0.01867}$

$[Cl^-]_{in} =6427.4$

For [Na⁺]:

$100 \times 10^{-3} = 0.0257 \Big ( \dfrac{145}{[Na^+]_{in}} \Big)$

$53.57= \Big ( \dfrac{145}{[Na^+]_{in}} \Big)$

$[Na^+]_{in}= 2.70$

6 0

2 years ago

Aiding in emotional processing and arousal functions are functions of the __________. A. Thalamus B. Hypothalamus C. Cerebrum D.

Liono4ka [1.6K]

Answer:

A. Thalamus

Explanation:

There are two large ovoid organs called the thalamus, which form most of the lateral walls of the third ventricle of the brain. A variety of receptors transmit signals from the thalamus to the cerebral cortex. Thalamus is anatomically situated adjacent to the midline third ventricle in the brain.

5 0

1 year ago