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Ber [7]
3 years ago
9

Name the three classifications of plants on the basis of their water needs

Biology
1 answer:
Leona [35]3 years ago
8 0

Pteridophyte

Gymnosperm

Angiosperms

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during what phase of a muscle twitch chemical changes such as the release of calicum are according intracelluary as rthe muscles
SOVA2 [1]

<u>During </u><u>latent </u><u>phase of a muscle twitch chemical changes such as the release of calicum are according intracelluary as rthe muscles prepare for contractrion.</u>

What are the phases of a twitch contraction?

  • A single contraction is called a twitch. A muscle twitch has a latent period, a contraction phase, and a relaxation phase.
  • A graded muscle response allows variation in muscle tension.

What is a latent period ?

The amount of time that passes between an action potential being generated in a muscle cell and the beginning of muscular contraction.

What is a muscle twitch?

  • The fundamental reaction of a motor unit to a single stimulus is a muscle twitch. Muscle Twitch in three different states .
  • Excitation of the muscle fiber takes place during the latent phase, and calcium ions are released from the sarcoplasmic reticulum into the cell's cytoplasm.

What happens during latent period of muscle twitch?

  • A single muscle twitch consists of three parts. the contraction phase, the relaxation phase, and the latent period, often known as the lag phase.
  • The action potential reaches the muscle, and the latent period is the brief (1-2 msec) interval before tension is seen in the muscle.

Learn more about latent period

brainly.com/question/10696517

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5 0
2 years ago
A sample of DNA reveals 30.3% Adenine. How much Guanine is present?
tiny-mole [99]

Answer:

69.7%

Explanation:

Adenine base pairs with thymine

guanine base pairs with cytosine

you need to get to 100%

30.3-100=69.7%

There will be 30.3% or adenine and thymine and 69.7% or guanine and cytosine.

7 0
3 years ago
The biological levels of organization range from a single cell all the way up to the biosphere in a highly structured hierarchy.
Tom [10]

Answer:

B) Tissue is made of different types of cells.

D) Organs are made of different types of tissue.

Explanation:

The tissues are made of different types of cells. The organs are also made of different types of tissue. There is no need of same types of tissues to make organs. Thus, option (B) and (D) is correct answer.

5 0
2 years ago
Over time, what happens to a trait that is an advantage to an organism?
Charra [1.4K]
I remember back in 10th grade I learned that birds that had beaks that were easier to break the seeds carried those traits to their babies and the whole area had that type of beak since it was necessary to break some seeds. So the beaks that were a disadvantage no longer existed and the beaks that became an advantage passed along to all the other birds.

Side note: if they all had the same beak they could all fight for the same type of seeds and probably have some sort of intense competition but idk if that’s necessary
3 0
3 years ago
A student wants to know the effect a mutation might have on a species' survival. The change causes a rabbit to have mottled brow
Alenkinab [10]

Answer:a

C

E

Explanation:

Usatestprep

6 0
3 years ago
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