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

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

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:

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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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 blank about the glacier

Answers

Answer:

poop

Explanation:

If the parent is BbRr what are the possible gametes?

Answers

Answer:

BR

Because the first letter comes first

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.

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:

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:

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:

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:

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 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.

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

Answers

Answer:

Adenosine Triphosphate (ATP)

Have a great day!

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:

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.)

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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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:

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

Answers

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

Answer:

a

Explanation:

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:

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

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

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

Answers

The answer is GANYMEDE

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

Answers

Answer:

chemical energy

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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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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#SPJ3

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?
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