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marin [14]
3 years ago
11

Which muscles contract to cause air to pass into the lungs through the trachea?

Biology
1 answer:
pickupchik [31]3 years ago
5 0
The muscles are external intercostal muscles, diapraghm and the abdomen muscles contract to allow air to pass into the lungs through the trachea. These muscle contractions will result in an added volume of the thorax which in return will cause in a pressure drop in the thorax. These contractions are essential in inhalation and exhalation.
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A single strand of dna helic has the code cgctaa. Which would be the complemntary code on the other strand of the helix
Damm [24]
It would be GCGATT. C always compliments G and A always compliments T in the case of DNA coding
6 0
3 years ago
How might symbiotic relationships be a disadvantage to an ecosystem?
natulia [17]

Answer:

it happens when 2 organisms jelp each other beneficial.

Explanation:

eg:algae and leguminous plants.the algae live on the roots and take in the nitrogen from the soil,which the plant cannot do and needs for growth.it takes in the nitrogen and pases it to the roots and even make the soil loose for the roots to move and they get a living space(algae on the roots).

4 0
2 years ago
Can you define these words?? Thanks!
padilas [110]

Answer:

<u>Cellulose</u> - It is described as a complex carbohydrate that forms the main constituent of the cell wall in most plants and is important in the manufacture of numerous products like pharmaceuticals, textiles, etc.

<u>Chlorophyll</u> - Any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as cyanobacteria.

<u>Chloroplast</u> - An organelle found in the cells of green plants and in photosynthetic algae, where photosynthesis takes place.  

<u>Bryophyte</u> - Any plant of the division Bryophyta, defined "sensu lato" to comprise the mosses, liverworts, and hornworts, and corresponding to all embryophytes that are not vascular plants.

<u>Pterophyte</u> - It is characterized as any fern(seedless plant) that is a division of Pteridophyta.

<u>Gymnosperm</u> - Any plant such as a conifer whose seeds are not enclosed in an ovary or those who don't bear seeds or fruits. Example; Cycads.

<u>Cone</u> - A cone-shaped flower head of various plants like banksias and proteas.

<u>Angiosperm</u> - Any flowering plant characterized by having ovules enclosed in an ovary and thus, produces fruits, as well as, seeds.

<u>Flower</u> - A reproductive structure in angiosperms and often conspicuously colorful and typically including sepals, petals, and either or both stamens and/or a pistil.

<u>Cuticle</u> - A noncellular protective covering outside the many invertebrates and plants.

<u>Vascular tissue</u> - The complex tissues that consist of various cell types and primarily responsible for transporting liquid and other nutrients throughout the plant or animal body.

<u>Xylem</u> - A vascular tissue in the land plants primarily responsible for the distribution of water and minerals that are taken up by the roots and also the key component of the wood.

<u>Phloem</u> - A vascular tissue in land plants primarily responsible for the distribution of sugars and the nutrients manufactured in the shoot.

<u>Roots</u> - The part of the plant which is generally underground that anchors and supports the plant body. It absorbs and stores water and nutrients, and in some plants is able to perform vegetative propagation.

<u>Root hairs</u> - The rhizoid of a vascular plant or a tabular outgrowth of a trichoblast, hair-forming cell on the epidermis of a plant root.

<u>Stems</u> - The above-ground stalk of a vascular plant that supports individual parts of a plant like leaves, flower, fruits, etc.

<u>Leaves</u> - The green and flat organ that represents the most prominent feature of the most vegetative plants.

<u>Photosynthesis</u> - The process by which plants and other photoautotrophs convert light energy into chemical energy. For example; Plants use air, water, along with sunlight to synthesize their food(carbohydrates and waste oxygen).

3 0
2 years ago
Can African zebras and seaweed in the Pacific Ocean be<br> found in the same ecosystem? Explain.
AnnyKZ [126]

Answer:

no

Explanation:

seaweed only grows in the oceans of runoffs of it

zebras live on land

5 0
2 years ago
Synaptic plasticity in response to psychoactive drugs can result in which of the following?
Ksenya-84 [330]

A,B,C and D

A. increase in the number of available neurotransmitters

B. decrease in the number of available neurotransmitters

C. increase in the number of receptors and receptor sites

D. the ability of the synapse to change in strength and function when the pathway is overused or underused

6 0
2 years ago
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