BIOLOGY HIGH SCHOOL

Which of the following statements is false? A) A single gene can only influence a single trait.
B) The number of chromosomes is different in different organisms.
C) There are more genes in a cell than there are chromosomes.
D) The karyotypes for a male human and a female human look different.

Answers

Answer 1
Answer:

Answer:

A) A single gene can only influence a single trait

Explanation:

One gene has the possibility of influencing many traits and in the same manner, multiple genes can affect a single trait.

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Phosphofructokinase is an important control enzyme in the regulation of cellular respiration. Which of the following statements correctly describes phosphofructokinase activity? A) It is inhibited by AMP.
B) It is activated by ATP.
C) It is activated by citrate, an intermediate of the citric acid cycle.
D) It catalyzes the conversion of fructose 1,6-bisphosphate to fructose 6-phosphate, an early step of glycolysis.
E) It is an allosteric enzyme.

Answers

The answer is E) It is an allosteric enzyme.

Phosphofructokinase changes it conformational ensemble when is bound to an effector.  This suggests that it is an allosteric enzyme.  It is activated by AMP, and inhibited by ATP and citrate. It catalyzes the conversion of fructose 6-phosphate to fructose 1,6-bisphosphate. 

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

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


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The Kenyanthropus platyops find at Lake Turkana, Kenya, although still debated, could mean that __________. a) Early humans had a diverse diet b) Early humans had a limited diet c) Early humans lived in caves d) Early humans were primarily herbivores

Answers

The Kenyanthropus platyops find at Lake Turkana, Kenya, although still debated, could mean that:

a) Early humans had a diverse diet

The discovery of Kenyanthropus platyops suggests the possibility of a more diverse diet among early humans. However, it's important to note that the interpretation of this find is still a subject of debate in the field of paleoanthropology.

A person’s phenotype can be best described as:

Answers

A person's phenotype is best described as the observable or visible traits of a person brought about by the person's genotype. These traits include: hair color, eye color, height, blood type. Basically, it includes all traits that the person has based on his genes and environment.

Use an analogy to describe the role of ATP in living organisms

Answers

ATM is shortened adenosine triphosphate. This is required by all living cells as this serves as the continual supply of energy which keeps the organism alive. In an analogy, we may consider ATP as money in which one needs in order to survive. When it is spent, it needs to be replenished.
The most commonly used analogy in the description of the function of ATP is that or currency. Just as we must utilize currency when trying to buy something or perform certain tasks, cells must utilize the ATP molecule by breaking it down, similar to how we must hand over our currency. Then, if the cell wants regenerate ATP, it must perform a number of chemical reactions, just as we earn our currency back.

Ryan hit a baseball with an acceleration of 20 m/s2. The mass of the baseball is 0.5 kg. What is the force?

Answers

Well to find the answer for force, the formula is mass X acceleration.
So, 20m/s² X 0.5kg = 10kg-m/s².
But, because we measure force in Newtons, we have to change the units (kg/m/s²) to Newtons.
1N (newton) equals to 1kg-m/s² and because we had 10, your answer is 
10N
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