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4 years ago

How does oxygen enters the lungs?

2 answers:

8 0

<span>Air is breathed in, it goes through the pharynx (if you are breathing through your nose), down the trachea (lung pipe), and into the lungs. Air is breathed in, it goes through the pharynx (if you are breathing through your nose), down the trachea (lung pipe), and into the lungs.

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natima [27]4 years ago

3 0

The oxygen travels down your windpipe into your lungs. After it exits through the bronchial tubes, it enters the alveoli, or air sacs. Once it does that, passes to the capillaries (blood vessels).

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What do sclerenchyma and collenchyma have in common? They are both thin-walled. They are both dead cells. They both function for

kakasveta [241]

Answer:

They both function for support

Explanation:

Collenchyma cells gives support to extra structural regions as well as sclerenchyma are responsible for the support of plants.

5 0

3 years ago

Read 2 more answers

Which of the following is true of conifers?

e-lub [12.9K]

Answer:

C.The gametophytes grow directly from the sporophyte

Explanation:

Conifers are gymnosperm which reproduce through the exposed seeds (seeds not included in fruits) found in the cones. The trees or plant on which these conifers grow are called sporophytes. In the sporophyte, the male and female gametes fuse together to form zygote which further develops into a seed. At the right time, these seeds get dispersed into wind and they grow into new plants known as sporophytes

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3 years ago

Which of the following correctly pairs an enzyme with its action? Group of answer choices a. RNA polymerase: b. binds to origin

Jet001 [13]

Answer:

Explanation:

The DNA sequence binds to the RNA sequence during transcription. This reaction is catalyzed by the enzyme RNA polymerase, therefore coping the DNA information into the messenger RNA (mRNA).

4 0

4 years ago

All of the following are ways that animals maintain homeostasis and cool down except

raketka [301]

Answer:

flapping their wings

Explanation:

Homeostasis is a phenomenon which involves the ability for an organism to maintain a stable internal environment despite fluctuations in the external environment. Homeostasis is important for the survival of living organisms as their cellular functions depend on it.

One of these environmental conditions is heat/hot temperature. Animals need to maintain a stable internal internal temperature despite the change in environment's. Animals do this by cooling down via various ways which include the following:

- Animals like apes, primates possess sweat glands like humans and hence cool down by SWEATING

- Animals like dog quickly exhale hot air and bring in cool air in a process called PANTING to cool down.

- Production of GOOSEBUMPS in animals help their hairs to stand in adverse weather conditions

Note that bird flap their wings in order to support flight and not perform an homeostatic process like cooling down.

8 0

3 years ago

***PLEASE DON'T GUESS< IF YOU DON'T KNOW DON'T ANSWER***

leva [86]

Answer:

T T

T TT TT

t Tt Tt

So, E, C, D, and A are correct. B is NOT correct. 50% is Tt, 50% have the same genotype TT or Tt, all have the same phenotype being tall, and all of the will be tall as they all have a dominant allele of tall.

3 0

3 years ago