BIOLOGY HIGH SCHOOL

An example of maintaining homeostasis at the system level would be _____. A. the liver storing excess sugar molecules
B. endocytosis and exocytosis of substances
C. breathing faster while jogging

Answers

Answer 1
Answer: The correct answer is,

B. endocytosis and excoytosis of substances
Answer 2
Answer:

B. endocytosis and exocytosis of substances


Related Questions

HIGH SCHOOL

Science is the process where we discover new information by asking questions and testing them. True False

Answers

The answer to the statement above is TRUE. It is true that through science, we are able to discover new things through inquiries or asking questions, and then testing these queries by experimentation. Basically, in science, it composes of a body of knowledge, and these knowledge has been expanding as more and more experimentations are done in order to make the lives of humans better.

Answer:

It is True

Explanation:

It starts with a hipothisis and then they test it until they can prove the fact.

HIGH SCHOOL

Natural selection is based on four main principles: variation, overproduction, adaptation, and descent with modification. Briefly explain how each of these principles is necessary for natural selection to occur?

Answers

Variation because if there aren’t different types, then it can’t occur
Overpopulation because then there can not be variation in the offspring
Adaptation because then some of the species have to adapt to the environment so the best traits can be chosen
And descent with modification, so the best types can survive
Heritability is important because that way the species can inherit traits that can help them survive better in their unique environment
HIGH SCHOOL

Oxidative phosphorylation is the third step in cellular respiration. It is composed of two smaller steps (electron transport chain and chemiosmosis). What molecules are donating their energy to power the proteins in the ETC?

Answers

Answer:

NADH and FADH2

Explanation:

Oxidative phosphorylation is the last step of cellular respiration involving two smaller steps; Electron transport chain (ETC) and chemiosmosis.

ETC is a series of proteins and organic molecules present in the cristae of the mitochondria. Electrons are passed from one member of the transport chain to another in a series of reduction-oxidation reactions (redox). Energy released is captured as a proton gradient.

All the electrons that are supplied into the transport chain are donated by NADH and FADH2 molecules (reduced electron carriers) produced in the previous stages of respiration. As the electrons are passed down the chain, they move from a higher to a lower energy level, releasing energy in the process. The released energy is used by several of the protein complexes to pump protons from the matrix of the mitochondria to the intermembrane space, forming a proton gradient.

The electrons donated by NADH are at a higher energy level i.e. NADH is a very good donor of electrons in redox reactions. This attribute allows NADH to transfer its electrons directly to Complex I, where energy is released and the complex uses this energy to pump protons across the membrane.

FADH2, on the other hand, is not a good donor of electrons. Thus, its electrons are at a lower energy level, making it unable to transfer its electrons to ComplexI. It feeds them through Complex II instead, which does not pump protons across the membrane.

This factor (Complex I bypass) causes FADH2 molecules to contribute less to the proton gradient than NADH molecules.

N.B: the energy stored in the proton gradient is subsequently used to produce ATP in Chemiosmosis.

HIGH SCHOOL

The accumulation of small changes in a gene pool over a relatively short period is called: A: anagenesis B: cladogenesis C: microevolution D: punctuated equilibrium

Answers

I believe it is microevolution
HIGH SCHOOL

What do you do if you have blood on chicken wings?

Answers

Don't eat them? Or before cooking rinse them off before cooking ‍♀️
COLLEGE

If the DNA sequence TTCACG is transcribed to AAGGC, what type of mutation has occurred?

Answers

It's a combination of deletion and insertion mutation.

From TTCACG to AAGGC

TTC was deleted from the DNA sequence.
AG is added or inserted in the DNA sequence.

Other types of mutation aside from Deletion and Insertion are Substitution and Frame Shift.
HIGH SCHOOL

Which is a biotic factor that affects the size of a population in a specific ecosystem? a. average temperature of the ecosystem
b. type of soil in the ecosystem
c. number and kinds of predators in the ecosystem
d. concentration of oxygen in the ecosystem

Answers

A biotic factor that affects the size of a population in a specific ecosystem is: c. number and kinds of predators in the ecosystem.

An ecosystem can be defined as a biological community that comprises all living organisms (biotic factors) and the physical environment (abiotic factors) with which they interact.

Basically, some of the essential services that are provided by an ecosystem for the sustenance of life include;

  • Nutrient cycling
  • Water purification
  • Plant pollination

A biotic factor refers to the living organisms that are existing within an ecosystem and their effect on the population living within it. Thus, the number and kinds of predators living in an ecosystem is a biotic factor that would affect the size of its population.

In conclusion, all the other answer options are abiotic factors.

Read more: brainly.com/question/10988516

The answer is C. Numbers and kinds of predators in the ecosystem because biotic means living organisms and it's the population that can effect the ecosystem, so the ecosystem can be effected by the number of predators (living organisms) in the ecosystem.
HIGH SCHOOL

The gap that can be from 60nm to 100nm, seen in this junction between the nerve and the muscle is known as the

Answers

The gap that can be from 60nm to 100nm, seen in this junction between the nerve and the muscle is known as the neuromuscular junction. It is also known as the myoneural junction. This junction is a chemical synapse formed by the contact between a motor neuron and a muscle fiber.
COLLEGE

What property of the dna molecule explains the necessity for okazaki fragments?

Answers

The property of the dna molecule that will explain the necessity for the okazaki fragments is the DNA molecules is antiparallel. When the DNA is antiparallel, it means that there is a run in opposite directions in regards of two molecules placed on each side of the DNA.

Random Questions
Ppplleeaassee help me: Assignment Directions: You will write a summary of the non-fiction article Robots On Earth. View the grading rubric before you start your work. This is your guide to a super submission. (See below) 1. Copy and paste the entire text of the article into a document. (done) Robots on Earth by Jerry West (INTRO) Explosions. Car chases. A man and woman, drenched in sweat, limping from a building as it crumbles to the ground, muster the last of their strength to rescue humanity from its inevitable extinction at the cold, metal hands of humanoid creatures with artificial intelligence gone awry. For decades, books and movies have dictated how we think of robots. Simply the word "robot" can bring to mind images of evil, mechanical creatures bent on taking over the world and wiping out every glimmer of humanity. And yet, the truth of machines is dramatically different. Today's robots hold little in common with their villainous cousins from action-packed science fiction. Most robots have no interest in harming the human population at all; they exist to aid people in making life safer, healthier, and more productive. (PARAGRAPH #1) For example, jobs such as welding and painting are important to civilization as we know it, but experience has taught us that these activities can be hazardous to human health. In addition, fumes in automobile and airplane factories can harm organic bodies that become exposed to their toxins in the assembly process. Even when the best precautions are taken, workers may still suffer from lack of adequate ventilation. What is the answer to these difficult dilemmas? Robots. Because machines don't rely on clean air or comfortable temperatures, because they can function even in the midst of deadly gasses, they can take over with ease where humans would suffer greatly. Working together, humans and robots can get the job done. (PARAGRAGRAPH #2) A robot's job isn't limited to the terrestrial level, either. Even in space, machines such as the R2 humanoid robot at the International Space Station complete dangerous tasks for astronauts, protecting them from potentially deadly situations. And then, when there are mundane but essential tasks to conduct on the space station, R2 takes care of those, as well, freeing up the astronauts' time for more important responsibilities. Thus, in space and on Earth, robots manage to create healthier, happier humans. (PARAGRAPH #3) In fact, there are robots on Earth that exist specifically to boost human health. Just as contact lenses enhance human sight, robotics can increase human mobility. People with disabilities and various forms of paralysis now have hope that they can achieve better range of motion, when before this wasn't possible. With the help of robots, scientists are working to create an exoskeleton that will attach itself to the outside of the human body, establishing a connection to the human brain. Neuroscientist Miguel Nicolelis has a dream. "We are working with the Brazilian government, who is helping fund the project. At the 2014 soccer World Cup celebrations we hope to have a Brazilian teenager with quadriplegia walk out and make the opening kick." (CONCLUSION) Explosions and car crashes may sell tickets for the summer blockbuster, but robots have so much more to offer, and much of it is positive service to humans. At the heart of the field of robotics is not the creation of people-destroying machines with evil artificial intelligence, but something much more useful. Robots aren't our enemies; instead, they are the valuable result of scientific endeavors to create safer lives for people everywhere. 1. Write a main idea sentence for each paragraph of the article, Robots on Earth. Intro: Paragraph #1: Paragraph #2 (write 2 sentences here): Paragraph #3 (write 2 sentences here): Conclusion: 4. Write YOUR summary paragraph of Robots on Earth HERE (for full credit it needs to be 7 sentences):