The first line of defense involves which structure(s)?
T-cells
skin
blood
B-cells

Answers

Answer 1

Answer:

option 2, skin

Explanation:

Answer 2

Answer:

b skin

Explanation:


Related Questions

A team of science researchers is trying to decide which type of microscope to purchase for their laboratory. Compared to electron microscopes, a light microscope provides which of these drawbacks or disadvantages?
A. uses electricity
B. specimens cannot be alive
C. lower magnification power
D. more expensive to purchase and operate​

Answers

Answer:

d

Explanation:

The drawback or disadvantage associated with the use of light microscopes over electron microscope is its lower magnification power.

LIGHT MICROSCOPE:

Light microscope is a type of microscope in which photons of light is used to view specimens.

The light microscope is distinct from the electron microscope being that electron microscope uses beam of electrons instead.

One advantage of light microscope is that it can view specimens alive while electron microscope can only view dead specimens.

However, one disadvantage associated with the use of light microscope is that it possesses a lower magnification compared to electron microscopes.

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How does a human being get from one cell to one million cells?

Answers

Answer:

one cell???          cellular reproduction should be your answer I believe.

Explanation:

Photosynthesis is a complex set of chemical reactions in which light energy is converted in to______________________ energy.

Answers

Answer:

chemical energy

ASAP PLS!!!!
Why is sweating an effective way to cool the body?
A. Evaporating water absorbs excess heat from the skin.
B. Evaporating water releases excess heat to the skin.
C. Condensing water absorbs excess heat from the skin.
D.Condensing water releases excess heat to the skin.

Answers

C. Condensing water absorbs excess heat from the skin.

Answer:

b or c i hope this helps

Explanation:

Select the correct answer. Which statement about natural selection is true? A. Natural selection and evolution are two terms for the same phenomenon. B. Natural selection is an outdated theory to explain how evolution took place. C. Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce. D. Natural selection is the process by which organisms develop variation in traits, which gives them a better chance of survival.

Answers

Answer:

C. Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.

Explanation:

Natural selection is an evolutional process by which species of living organisms with stronger or more beneficial traits have higher chances of survival and reproduction. In other words, it is the process by which organisms adapt and survive.

Organisms in a population are all different in their own ways. And those with characteristics or traits better suited for the environment are more likely to survive than those without. The selection prefers more beneficial traits and not wholly on the superiority of the organism. So, the survival and reproduction chance of an organism depends on the presence of traits beneficial to the environment, which is how nature selects. And in this process, those selected will dominate the population while those rejected will be reduced or even die.

Thus, the correct answer is option C.

Please help me!!! Timed!!

Answers

Answer:

Diploid

Explanation:

Which of the following is not a possible benefit of biodiversity?

a
A higher number of species in a food web creates a more stable ecosystem.
b
A greater variety of predators indicates that fewer prey survive within the ecosystem.
c
A greater number of plant species provide more available food for primary consumers.
d
A variety of habitats within an ecosystem supports a greater number of species.

Answers

Answer:

b

Explanation:

because the more predators less prey and less organisms

It seems unlikely that biodiversity will result in fewer prey animals surviving in the environment due to the diversity of predators. So, the correct option is B.

What is Biodiversity?

The variety of all living things and how they interact with one another and the environment are referred to as biodiversity. Along with species diversity both inside and between them, this also refers to ecosystem and landscape diversity.

Because it helps ecosystems function and provide services like pollination, nutrient cycling, or climate management, biodiversity is significant. For human communities, it also has significant cultural, social, and economic importance.

The range and variety of life on Earth is referred to as biodiversity or biological diversity. A measure of variation at the levels of genes, species, and ecosystems is called biodiversity.

Therefore, the correct option is B.

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PLEASE HELP
Explain what steps you could take to prepare for a career in the agricultural sciences.

Answers

Answer:

Education after high school. A bachelor's degree in agricultural science is required for jobs in research. ...

Work Experience. Previous work experience in a particular research area may be required for some jobs.

On-the-job training.

Explanation:

Have a great day!

fill in the blanks to complete the concept map for the process of translation

Answers

Answer:RNA code for Amino Acids that make Proteins through the process of translation

Explanation:

During translation, tRNA recognizes the mRNA codons, complements them, and add the correct amino acid to the growing protein. CODON and PROTEIN are the missing words.

--------------------------------------------------------------------------

Protein synthesis

Occurs in two steps. Transcription and translation.  

TranscriptionmRNA syntheis

The first step before protein synthesis begins is to synthesize messenger RNA, mRNA.  

This is the coping process of the DNA section for the desired protein, and it happens in the nucleus.  

 

Translation:

Cytoplasm stage

Translation takes place when the formed mRNA moves to the cytoplasm through the nucleus membrane pores.  

• Once in the cytoplasm, mRNA meets a ribosome, which is the primary structure for protein synthesis.

Ribosomes are organelles composed by the association of proteins with rRNA and tRNA. They can be found in the rough endoplasmic reticulum or floating in the cytosol.  

• While the ribosome reads mRNA strain from its 5´ extreme to 3´, tRNA adds the correct amino acids to build the polypeptide.  

                     →    mRNA is composed of different codons.  

                     →    Each codon is a chort sequence of  

                    three nucleotides that codes for one amino acid.  

                     →    When tRNA molecules recognize these                                                                                                  

                            sequencies, they add the correct amino  

                                   acid to the growing protein.  

Protein synthesis ends when the proteins passes through the Endoplasmic Reticulum and the Golgi complex for their final folding process.

---------------------------------------------------------------

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What type of cells are produced in Meiosis?
What type of cells are produced in Mitosis?

Answers

Sexual cells such as gametes are produced in meiosis, while regular cells such as plant or animal ones are produced in mitosis.

Why do you think they split the reptiles into four different groups?

Answers

Answer:

because, there are too many characteristics of some reptiles that others dont have or things that a reptile normally dosnt have.

Explanation:

:) hope this helps

What would be a possible disadvantage of asexual reproduction?
A Ability to reproduce in the absence of a mate
Results in low genetic variation of the species
с Allows for more genetic variation in the offspring
D Takes less time to produce offspring

Answers

Answer:

B

Explanation:

All of the following are believed to be causes of extinction except____
O A. human impact.
O B. meteorite collision.
O c. habitat destruction.
O D. protective breeding programs.

Answers

The correct answer would be D

POSSIBLE POINTS: 8.33
Devon has cystic fibrosis or CF. It is an inherited condition that causes his body to produce excess mucus and lower than normal levels of digestive
enzymes. A person with CF often experiences the following symptoms:
frequent lung infections
poor energy level
low appetite
Although all of Devon's body systems are affected by cystic fibrosis, it is mainly a disorder of which two body systems?
circulatory and digestive
o digestive and skeletal
digestive and respiratory
circulatory and respiratory

Answers

Answer:

digestive and respiratory

Explanation:

Select TWO processes that are MOST LIKELY to cause the variation in bird beak size traits within this
population

A. Asexual reproduction
B.Hibernation
C.Sexual reproduction
D.Migration
E.Mutation

Answers

The two processes that are most likely to cause the variation in bird beak size traits are ; ( C and E )

sexual reproduction ( C ) Mutation ( E )

The Random Mutation occurring in birds due to the environmental factors and food availability in an area will to lead to the varying changes seen in the size of beaks of the bird within a population. long beaks are used to pick out food from cactus plants while short strong beaks are used to pick out food underground.

Sexual reproduction between birds with varying genes will lead to the formation of varying beak sizes traits seen within a given bird population.

Hence we can conclude that the two processes that are most likely to cause variation in bird beak size are ; sexual reproduction and mutation.

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Many plants have a waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule? *

A. Carbohydrates

B. Lipids

C. Proteins

D. Nucleic Acid

Answers

Answer:

B= lipids

Explanation:

Do convection currents exist in Earth's crust?

Answers

Answer:

yes convection currents occur in earth's crust I hope this helps

yes convection exsists on earths crust.

helppppp plzzzzzzzzzzzz​

Answers

Answer:

The answer is A.

Explanation:

The question is asking how the moon phase changes from a new moon to a full moon. You can see on the Picture that when it is a full moon, the order from left to right is Sun, Earth, and Moon.

The sea is the ________________________ ecosystem in the world .

Answers

I think marine, but I’m not so sure
Maybe “largest” ecosystem in the world? or diverse?

Put the following in order describing the process of using geothermal energy to create energy.
= Heat is collected from the Earth
= Steam turns a turbine.
= Generators produce electricity.
= Heat is used to change water into steam.

Answers

Answer:

1. heat is collected from the earth

2. heat is used to change water into steam

3. steams turns a turbine

4. generators produce electricity

Explanation:

What organisms are capable of cellular respiration?

A. Heterotrophs only
B. Animals and fungus
C. Animals, fungus, and some bacteria
D. Protists
E. All organisms

Answers

the answer is E. All organisms

If the parent is BbRr what are the possible gametes?

Answers

Answer:

BR

Because the first letter comes first

Fill in the blank about the glacier

Answers

Answer:

poop

Explanation:

Which statement best describes the role of transfer RNA in protein synthesis?
Transfer RNA carries a copy of the DNA base sequence to the cytoplasm.
Transfer RNA matches up amino acids with the base sequence copied from DNA.
Transfer RNA composes the ribosome on which the protein forms.
Transfer RNA brings nucleotides to make a copy of the DNA base sequence.

Answers

Answer:

transfer RNA carries a copy of the DNA base sequence to the cytoplasm

Explanation:

i am sorry if this is wrong

Answer:

its b (transfer RNA matches up amino acids with the base sequence copied from DNA)

Explanation:

The pancreas secretes enzymes and bicarbonate into the a. esophagus c. duodenum e. ileum b. stomach d. jejunum

Answers

Answer:

C. Duodenum

Explanation:

hope this helps!

the answer should be the duodenum

Earth's crust is a thin layer made of
a rock
b metal
c liquid metal
d water

Answers

B!!!!!!!!!!!!!!!!!!!

Answer:

a

Explanation:

A segment of DNA strand is shown.
3’ ATCGATCCA 5”
Which of these is the correct complementary DNA strand for the segment shown?
A. TACCTAGGA
B. TAGCTAGGT
C. ATCGATCCA
D. ACCTAGCTA

Answers

B. TAGCTAGGT
Remember whenever you doing complementary DNA strand Adenine (A) ⟷ Thymine (T) & Cytosine (C) ⟷ Guanine (G)

what does sexual development encompass

Answers

sexual development the biologic and psychosocial changes that lead to sexual maturity. (Biologic changes in humans are discussed under reproductive organs.)

What do all cellular activities in living organisms use as.a source of energy?

Answers

Answer:

Adenosine Triphosphate (ATP)

Have a great day!

What is the 7th moon closest to Jupiter? Giving 20 points, and correct answers get brainliest.

Answers

The answer is GANYMEDE
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Pls help?!?!? With this A principal collected and recorded math test scores for two groups of students. After analyzing the information for each group, the principal summarized the data on the box plots. Based on the box plots, which statement correctly compares the median test scores for the two groups of students? May someone please help me with this? A good conclusion paragraphin an essay.A. introduces the main ideaB. connects everything togetherC. is at the beginningO D. introduces new ideas that need to beexplained How does the air temperature at the bottom of a mountain compare with the air temperature at the top of the mountain?(2 points)The air is colder at the bottom.The air is warmer at the top.The air temperature at the top is lower.The air temperature is the same. A person who is working part-time when full-time work is desired is known as __________.please help Which graph best represents the equation 2x + 4y = -8? Which of the following is true?The flow of gases varies directly with airway resistance.As lung compliance increases, the energy required to breathe increasesSurfactant increases the cohesiveness of water molecules therefore decreasingthe surface tension of the alveolar fluid.Infant Respiratory Distress Syndrome occurs when there is a lack of surfactantproduced. THis is common in premature infants.In healthy individuals, friction is a major factor affecting pulmonary ventilation 1.In this environment, which trait is adaptive for the birds2. Did the birds choose to have the adaptive trait? (yes or no)3.Sherman suggests that reproduction always creates individuals with adaptive traits. Does this seem correct? Why or why not? Read the following excerpt from Helen Keller's The Story of My Life.I learned a great many new words that day. I do notremember what they all were; but I do know that mother,father, sister, teacher were among them - words that wereto make the world blossom for me, "like Aaron's rod, withflowers." It would have been difficult to find a happier childthan I was as I lay in my crib at the close of the eventfulday and lived over the joys it had brought me, and for thefirst time longed for a new day to come.What part of the plot is the author most likely developing in this passage?A. Rising actionB. ClimaxC. ConclusionD. Conflict John Park lives in Anytown, Missouri. He rents an apartment on Broad Street. He has one credit card with National Bank. He pays the balance on this every month, and he always stays within his $400 spending budget. In addition, he has one student loan, which he defers, since he is a full-time student. He has recently applied for a job at Happy Hamburgers.Based on Johns profile, what information should he expect to find on his credit report? Check all that apply.1. inquiries from his lenders, the apartment complex, and Happy Hamburgers2. a note about delinquency from National Bank3. a current account for his student loan4. a current account with National Bank5. a current account with Happy Hamburgers Question 4 of 10 What is the range for the following set of measurements? 27C, 12C, 31C, 19C, 23C, 11C, 17C A. 1C B. 11C to 31C O C. 27C to 17C O D. 0C to 100C Researchers are confident that they can boost suberin production by this many times? This is for science btw 100 POINTS!!!In at least one hundred words, give an overview of the basic tenets of the Igbo belief system, as described in Achebes Things Fall Apart. Use evidence to support your answer. Select the correct answer.Consider this equation.cos(8) = -If 8 is an angle in quadrant II, what is the value of tan)?.158. 15. -158OD. 15 Climates near the ocean are milder than climates farther inland. (True or False) Help!!!! Giving Brainliest if correct!!!!How did Admiral Chester Nimitz affect the Allied victory in the Pacific?A. He developed and implemented key battle strategies.B. He made the decision to drop the atomic bomb.C. He planned bombing raids on Japan from aircraft carriers.D. He commanded Allied forces in the Southwest Pacific theater. Write an equation for this graph. (Use / for division and * for multiplication; do not include spaces in your answer) need the answer help me plz an thank u 100 POINTSI am asking 2 questions because im giving so many points... 1. Describe the first hypothesis that scientists have about blindness in the Mexican tetra. Be sure to discuss pleiotropy in your answer.\2. One effect of the Hedgehog gene is to make cave tetras go blind. What is another effect it might have?