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strojnjashka [21]
3 years ago
14

Which statements are true of a white dwarf?

Biology
1 answer:
lubasha [3.4K]3 years ago
8 0
B and E are the right answers. If this question is not multiple choice, I think E is the best answer.
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List two reasons that enzymes are needed... why don't active<br> sitesexist on their own?
Yakvenalex [24]

Answer:

Enzymes are proteins in composition which are a very essential component of the metabolic reactions in the living organisms.

The properties of enzymes allow the enzymes to be used as a reaction catalyst which increases the speed of the reaction.

The enzymes lower the threshold energy of the chemical reaction and thus increases the rate of reaction.

The enzyme catalyses very complex reactions like a breakdown of complex biomolecules as well as the formation of complex biomolecules.

The active sites are present on the enzymes which bind the substrate molecule and increases the pace of reaction.

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3 years ago
Which nucleotide could be added to the sequence
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I think its A, thymine
4 0
3 years ago
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A patient with sneezing, congestion, fever, and a cough visits the doctor and asks for an antibiotic as treatment. Which of the
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A. Because the symptoms will become worse and the patient obviously does not want it to continue into s more difficult virus
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How many how many eggs does a frog lay
aalyn [17]

Answer:

Explanation:

Frogs lay thousands of eggs

7 0
3 years ago
8-3 Mechanisms of Transport. For each of the following statements, answer with a D if the statement is true of simple diffusion,
slamgirl [31]

Answer:

(a) Requires the presence of an integral membrane protein -F

(b) Solutes move down their free energy gradient in the direction of thermodynamic equilibrium - N

(c) Is not subject to saturation - N

(d) Requires the hydrolysis of

ATP - A except secondary active transport

(e) Is a way of establishing a difference in the concentration gradient of solutes across a membrane - D

(f) Applies only to small, nonpolar solutes - D

(g) Applies only to ions - A

(h) Transport can occur in either direction across the membrane, depending on the prevailing concentration gradient - D

(i) Has a positive G(Gradient) - D

(j) Usually has intrinsic directionality

Explanation:

Simple Diffusion is the movement of solutes from a region of higher concentration to a region of lower concentration through a semipermeable membrane.

When then is through a transmenbrane integral protein, it is a facilitated diffusion

Active transport uses chemicals (e.g ATP) to move ions against the concentration gradient (Lower to Higher concentration).

They are two types(Primary and Secondary Active transport). Secondary active transport do not require ATP

5 0
3 years ago
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