Which of the following is correct concerning the Km of an enzyme? (A) It depends on the dissociation constant for the product of the reaction.
(B) It defines the Vmax of the enzyme-catalyzed reaction.
(C) It is a measure of the number of substrate molecules converted to product in a specific unit of time.
(D) It is the substrate concentration at which the velocity of the reaction is equal to 1/2 Vmax.
(E) It is measured in units of moles per minute.

Answers

Answer 1

Answer: correct answer is
D.it is the substrate concentration at which the velocity of the reaction is equal to 1/2 Vmax

we can write is as:
$Km= (1)/(2)Vmax$

Greetings,
n00nst00p :)

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Without ribosomes, a cell would not produce

Answers

Without ribosomes a cell would not produce proteins. Ribosomes are responsible for producing proteins in a cell.

Without ribosomes, a cell would not be able to produce proteins.

Leukopenia is a condition characterized by a decrease in white blood cells. What effect does leukopenia have on the body's ability to fight infection?A) Leukopenia increases the body's ability to fight infection.
B) Leukopenia decreases the body's ability to fight infection.
C) Leukopenia has no effect on the body's ability to fight infection.
D) Leukopenia increases the body's ability to fight infection at certain times and decreases it at other times.

Answers

Answer: B) Leukopenia decreases the body's ability to fight infection.

The condition Leukopenia results due to decrease in the count of the white blood cells. It results typically due to the decrease in the number of neutrophil. White blood cells are important for maintaining the immunity within a human body. These cells protect the body against the foreign invaders like bacteria, viruses hence, prevents infection. As, the number of white blood cells decreases the body's ability to provide protection against foreign invaders decreases and hence, infection occurs.

Therefore, B) Leukopenia decreases the body's ability to fight infection is correct.

Leukopenia is a condition characterized by a decrease in white blood cells. Leukopenia decreases the body's ability to fight infection and the correct option is option B.

White blood cells, also known as leukocytes, play a crucial role in the body's immune response. They help identify and destroy foreign substances such as bacteria, viruses, and other pathogens. When a person has leukopenia, the reduced number of white blood cells means there are fewer immune cells available to defend against infections.

With a lower count of white blood cells, the body's ability to mount an effective immune response is compromised. It becomes more challenging to identify and eliminate invading pathogens, making the individual more susceptible to infections. Leukopenia can weaken the immune system, making it harder for the body to control and eradicate infections properly.

Thus, the ideal selection is option B.

Learn more about White blood cells, here:

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Using the explicit formula, calculate how far the students will be swimming on week 10 using Ernest's schedule.

Answers

Ernest would be swimming at 3.25 units on week 10

The explicit formula is given as:

$a_n = a_1 + (n - 1) * d$

Also, we have the following parameters

$a_1 =1.0$ -- the initial distance

$d =0.25$ --- the difference between concurrent distances

In week 10, the value of n is 10.

Next, substitute 10 for n in the explicit formula $a_n = a_1 + (n - 1) * d$

So, we have:

$a_(10) = 1.0 + (10 - 1) * 0.25$

Subtract 1 from 10

$a_(10) = 1.0 + 9 * 0.25$

Multiply 9 by 0.25

$a_(10) = 1.0 + 2.25$

Add 1.0 and 2.25

$a_(10) = 3.25$

Hence, Ernest would be swimming at 3.25 units on week 10

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Explain how it might happen that a human offspring with 47 chromosomes could be produced

Answers

Whenever the sperm and the egg combine, it is possible for one or the other to not split properly and bring 2 of the chromosomes instead of just 1

Sperm cells must swim to the egg. What type of organelle must they contain? Why?

Answers

I may be wrong, but they included 'swim' in the question. This leads me to believe they want you to say the tail. If sperm didnt have tails, they wouldnt be able to propel themselves towards the egg.

Hope this helps ~

x and y chromosomes think of it like a phone charger you cant charge the phone unless the charger is plugged into the wall and the phone.

Help with these please???

Answers

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28. not sure about this one sorry
29. D - all of the above
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