BIOLOGY HIGH SCHOOL

In the diagram below, which step represents the excretory function of the lungs?

Answers

Answer 1
Answer: By basic body biology, we inhale oxygen and we exhale carbon dioxide. The lungs are the organs that cause exhalation of carbon dioxide, which are then highly vital to our excretory system. Our lungs have tiny sacs called alveoli which remove carbon dioxide from our bloodstream as they enter our lungs, so our blood is only oxygen-rich as they leave the lungs.
Answer 2
Answer:

The answer is CO2 Out

Related Questions

Limiting the amount of human waste and chemicals in run-off will decreasea. air pollution. b. soil pollution. c. water pollution. d. sound pollution.
Describe an example of the cognitive stage, the associative stage, and the autonomous stage during learning the task of operating your new video camera.
What role do autotrophs (producers) play in ecosystems?
Which of the following situations would summarizing be the most useful?A. writing a persuasive essay B. looking for statistics for a research paper C. writing a synopsis of a play D. reading a magazine
Which statement describes a limitation of the kinetic-molecular theory for a gas?a. The theory assumes that particles do not experience intermolecular forces. b. The theory states that pressure is inversely proportional to volume. c. The theory assumes that particles are in random and continuous motion. d. The theory states that pressure increases with temperature.

Which is the best action to take during an earthquake: If outdoors, seek the shelter of a sturdy building B:If inside, seek protection from windows and hanging objects. C:If in a car, drive as quickly as possible away from the epicenter of the quake.

Answers

The correct answer is option option B

The best way to protect ourself from earthquake is to protect ourself from windows and hanging objects.

The windows and objects may fall on the person that can eventually hurt the person beside these windows and under heavy objects.

In case of the earthquake one person should protect themselves from the surrounding objects and earthquake.

Its B im pretty sure

Pests have always been a nuisance for farmers. The use of pesticides dramatically improved the success of crops; however, it has been found that some insects are no longer harmed by traditional pesticides. How would Charles Darwin, the man behind the theory of evolution by means of natural selection, explain this phenomenon. A) Through random mutations in DNA, some pests developed a resistance to the pesticide.


B) The chemicals used in pesticides today are not strong enough to kill unwanted pests.


C) The pesticides used in the past caused unwanted mutations in pests causing them to mutate into superbugs.


D) Through repeated exposure to the pesticides, the pests simply got use to to the chemicals and built up a resistance.

Answers

The basis of the process of Natural selection is the random mutation: some organisms develop random mutations which increase their chance for survival and they survive more likely than other organisms and reproduce. 

So the correct answer is:
A) Through random mutations in DNA, some pests developed a resistance to the pesticide.

Answer: A

Explanation: Through random mutations in DNA, some pests developed a resistance to the pesticide. Through random mutations in DNA, some pests became resistant to the chemicals. These resistant forms are the ones to survive, reproduce, and pass on their genes.

The idea that sporophyte and gametophyte generations follow one another in a plant's life cycle is called ______.a. gamete and spore
b. Haploid and Diploid
c. alternation of generations

Answers

Answer:

The correct answer would be c. alteration of generation.

It refers to the reproduction pattern usually observed in lower plants in which their life cycle alternate between diploid (sporophyte) and haploid (gametophyte) stages.

The sporophyte represents the diploid stage which produces haploid spores through the process of meiosis.

The spored lead to the formation of haploid gametophyte which produces male and female gametes through mitotic division.

The fusion of the gametes leads to the production of a diploid zygote which matures into a diploid sporophyte.

Thus, they alternate between haploid and diploid stages.
The idea that sporophyte and gametophyte generations follow one another in a plant's life cycle is called C.alternation of generations.

♡♡Hope I helped!!! :)♡♡

What is the difference between Primary and Secondary Succession?

Answers

Answer:

Some differences between primary and secondary succession are:

-Secondary succession happens on a previously existing community that has been cleared.

Another difference would be:

-Pioneer species for secondary succession are adapted differently- they grow quickly, can disperse quickly and have a short life span

And finally:

-Primary succession develops a new community from scratch

Not sure if you were looking for this, sorry if this is not correct.

two plants are crossed, resulting in offspring with a 9:3:3:1 phenotypicmratio for a particular set of two traits. what does this suggest about the trait?

Answers

A 9:3:3:1 phenotypic ratio suggests that the traits being observed follow Mendelian inheritance patterns. In Mendelian genetics, a 9:3:3:1 ratio is characteristic of a dihybrid cross involving two genes that assort independently.

This ratio indicates that there are two traits being considered, and each trait is controlled by different genes. The 9 represents the dominant phenotype for both traits, the 3s represent the different combinations of the two recessive phenotypes, and the 1 represents the double recessive phenotype for both traits.

Overall, this suggests that the two traits are not linked and are segregating independently during the formation of gametes. This phenotypic ratio is often observed in crosses involving two heterozygous individuals for two unlinked genes.  

A-C-T-G-G-A-T
Rewrite the sequence to show a substitution of a nucleotide in the DNA strand.

Answers


 I  took the test got it right here it a copy of the  test showing I got it right hope this helps

You can do this a few ways. You just have to change one A to a T. Or you can change a C to a G, and vice versa. For example, T-C-T-G-G-A-T. Or you could as do, A-C-T-G-C-A-T.
Other Questions
What do two sugar isomers have in common
What stage of cellular respiration requires the input of energy
Kevin has his mother’s blue eyes and her shyness, which can both be attributed to __________.a. habits b. heredity c. environment d. culture
Spittlebugs release foam to hide themselves in branches. What kind of adaptation is this?