BIOLOGY HIGH SCHOOL

Which is the name for a quick, unlearned, and automatic response? Select one of the options below as your answer: A. An impulse B. A synapse C. A reflex

Answers

Answer 1
Answer: The correct option for this question is option C - A reflex. A reflex is what occurs when your body has a snap reaction to a form of outside stimuli, for example catching something that has been thrown at you, or bringing back your arm quickly after touching a hot place.

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Which of the following terms is described as an organism’s tendency to maintain a stable internal environment?a. adaptation c. homeostasis b. evolution d. reproduction

What metabolic factor do you have the most control over?a. age
b. activity level
c. health status
d. genetic makeup

Answers

Answer:

Activity level.

Explanation:

Metabolism is the important for the cell survival and its growth. Most of the metabolic factors does not depend upon the control of the organism and occurs itself in the body.

Some factors can be improved or controlled by the activity level. The activity level can be controlled by the individual and may affect the flexibility and may also affect the other metabolic factor. One can control its own activity level.

Thus, the correct answer is option (b).
The metabolic factor that you have the most control over is B. Activity level.

A scientist is trying to determine the relationship between clams, snails, and squid. When she generates a molecular clock, she is surprised to see that clams and squid are more closely related than clams and snails. Which did the molecular clock data show?Clams and squid have been evolving separately for a longer time than clams and snails.
Clams and squid have been evolving separately for a shorter time than clams and snails.
Clams and snails have more in common genetically than clams and squid.
Clams and snails are more similar in related structures than clams and squids.

Answers

Answer:

The correct answer is the second statement.

Explanation:

The molecular clock refers to a procedure in molecular evolution that associate the time of divergence between the two species with the number of molecular differences determined between the sequences of DNA or proteins.  

The more genetically associated, the shorter will be the separation time between the two species. Due to this, as clams and squid are more closely associated it can be concluded that these species look more genetically identical, and have evolved distinctly for a brief time duration in comparison to the clams and snails.  

Answer:

B. Clams and squid have been evolving separately for a shorter time than clams and snails.

Explanation:

Edge 2021

What advantage does the phylogenic classification system have over the Linnaean system?a.The phylogenic system defines each organism as a plant or animal; the Linnaean system does not.
b.The phylogenic system shows the evolutionary history of an organism; the Linnaean system does not.
c.The phylogenic system ranks organisms in order of importance; the Linnaean system does not.
NextReset

Answers

I believe the correct answer from the choices listed above is option B. One advantage of the phylogenic classification system over the Linnaean system would be that the phylogenic system shows the evolutionary history of an organism; the Linnaean system does not. Hope this answers the question.
the correct answer is letter b

In both American cotton (Gossypium hirsutum) and Egyptian cotton (G. barbadense) petal spot is a dominant character over no petal spot. When the cross is made within the species, the F2 progeny segregates in a 3:1 ratio with petal spot character in 75% of the population. However, no clear cut ratio is obtained in respect of the same flower character, when the cross is made reciprocally between the above two species. What is the explanation of this fact?

Answers

 

I would say 4 because genetic drift could cause this if the population is small

Which hormone is essential to our ability to maintain our fluid levels? Which hormone is essential to our ability to maintain our fluid levels? cortisol thyroxine insulin aldosterone

Answers

Answer:

Aldosterone.

Explanation:

Aldosterone is a hormone that regulates the levels of sodium and potassium in our body, which leads to regulate our fluid levels.

In order to increase the fluids in our system, aldosterone causes the absorption of sodium from our kidneys. The kidneys are the place where our body filters the blood absorbing what it needs, such as sodium, and excreting the rest as urine. With the entering of sodium to our bloodstream, water also enters, increasing the volume of blood in our body.

Aldosterone is also responsible for the excretion of potassium into the urine, controlling the levels of this ion, which is extremely important for a high number of reactions.    

Which of the following are associated with a rock's chemical composition? Select all that apply.A. dissolved gases
B. crystalline structure
C. types of chemical elements
D. amounts of chemical elements

Answers

B. Crystalline structure

C. Types of chemical elements

And

D. Amounts of chemical elements

Answers

B. crystalline structure

C. types of chemical elements

D. amounts of chemical elements
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