BIOLOGY HIGH SCHOOL

Human movement involves the complex interplay of many body systems. true or false

Answers

Answer 1
Answer:

The given statement, "Human movement involves the complex interplay of many body systems." is true. Human movement is a complex process that requires the coordination and interaction of multiple body systems. These body systems include the muscular system, skeletal system, nervous system, and cardiovascular system, among others.

The muscular system plays a vital role in movement by generating force and facilitating the contraction and relaxation of muscles. Muscles work in pairs, with one muscle contracting while the opposing muscle relaxes, allowing for controlled movement. This interplay of muscles is necessary for various movements, such as walking, running, and lifting objects.

The skeletal system provides structural support and serves as the framework for movement. It consists of bones, joints, and connective tissues. Bones act as levers, while joints allow for flexibility and facilitate different types of movement, such as bending, rotating, and extending.

The nervous system is responsible for controlling and coordinating movement. It receives and processes sensory information, sends signals to muscles to initiate movement, and regulates the speed and force of muscle contractions. The brain and spinal cord are integral components of the nervous system, playing a crucial role in coordinating complex movements.

The cardiovascular system, composed of the heart, blood vessels, and blood, transports oxygen and nutrients to the muscles involved in movement. It also carries away waste products, such as carbon dioxide, generated during muscular activity. Adequate blood flow and oxygen supply are essential for optimal movement and performance.

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Answer 2
Answer: true because even just typing on a keyboard requires your brain to send the right signals to each individual muscle in your shoulders upper arms forearms and fingers so that you can type

hope this helps if not just let me know

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DNA in a solution is negatively charged; if you ran a sample of DNA, what would you predict about its migration?

Answers

Assuming that you ran the DNA sample on an agarose gel. And that you are performing gel electrophoresis. I would predict the sample of DNA moving away from the negative terminal or end and to the positive one. As it is being repelled due to its overall negative charge and thus attracted to the positive end. Both the magnitude of charge and size of DNA sample fragment act as factors and contribute to migration.

What is transporter of the cell?

Answers

Endoplazmic reticulum

A boy jumps into a cold swimming pool and his body temperature goes down. His muscles, blood vessels, and nervous system work together to restore his body temperature. Which term best describes this process?A. homeostasis
B. hypothermia
C. reflex
D. respiration

Answers

The term best describes this process is homeostasis.

What is homeostasis?

A self-regulating process by which an organism maintains a constant internal environment of their body is known as homeostasis.

What all are maintained during homeostasis?

The variables that are maintained during homeostasis are:

  • body temperature,
  • fluid,
  • blood pH,
  • and oxygen tension.

What can disrupt homeostasis?

The substances that can disrupt homeostasis are:

  • Disease
  • Toxins
  • Pathogens

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the answer would be homeostasis, which is the name of the process by which human bodies regulate their temperature. in the previous answer, respiration is just breathing

1. Which of the following occurs prior to speciation? A) Organisms of different populations join together.
B) Different species share the same space.
C) A population is divided.
D) A major change on earth takes place.

2. Which of the following must be true of their individuals if two populations are no longer the same species?
A) They do not have any of the same genes.
B) They do not share any of the same space.
C) They do not resemble each other at all.
D) They cannot reproduce successfully with each other.

3. How does speciation start to take place on a genetic level between two isolated populations?
A) Large numbers of mutations occur.
B) Allele frequencies change in different ways.
C) New genes are added to one group.
D) Recessive alleles become dominant.

Answers

1) C
A population has to be isolated for speciation
2) D
Different species are incapable of reproducing with one another
3) D
When a population is contained, the recessive alleles can become dominant within the population

The 3rd question is actually B. Allele frequencies change in different ways

Sponges have no “true tissues.” What does this mean?Select one of the options below as your answer:
a. They perform body functions by diffusion.
b. They have organs for specific functions.
c. Similar cells do not cooperate together.

Answers

C. Similar cells do not cooperate together.

This is because cells are specialized and loosely organized. They are not organized into organs or functional groups.

The answer to this question is C

According to Figure 13-2, if 25 percent of the parent material remains in a rock sample, how many half-lives have occurred?

Answers

Answer: Number of half lives occurred  2.

Explanation:

Let the initial concentration be x

Concentration left=25 % of the x= x(25)/(100)=(x)/(4)

To calculate the number of half lives, we use the formula:

a=(a_o)/(2^n)..(1)

where,

a = amount of reactant left after n-half lives = 0.0495 moles

a_o = Initial amount of the reactant = 0.7924 moles

n = number of half lives

(x)/(4)=(x)/(2^n)

taking log both sides

\logx-\log4=\logx-n\log2

\log4=n\log2

\log(2)^2=2\log2=n\log2

n = 2

Number of half lives occurred  2.
2 half lives.A half life is when a substance is broken down by half. 100% -> 50% etc.
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