When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? latent period fatigue period relaxation period refractory period

Answers

Answer 1

Answer:

Answer:

Refractory period

Explanation:

When two stimuli are applied one after another intermediately, muscles contract in response to the first stimuli. Once a muscle fiber receives stimulation to contract, it loses its excitability temporarily and cannot respond for a time. This period when the muscle loses its excitability is called refractory period.

Different types of muscle fibers have different duration of refractory period. The refractory period of skeletal muscle is shorter than that of cardiac muscle. During an absolute refractory period, the activation gates of voltage-gated Na+ channels are open and the channels are inactivating while the voltage-gated K+ channels are open.

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The cell mechanism of "active transport" involves the transport of insoluble chemicals across the membrane with protein acting as the carrier.

Answers

The above statement is FALSE.

Facilitated diffusion happens when large, insoluble membrane compounds are diffused for easy transportation. However, this transport does not require energy, therefore, it is a passive transport.

Active transport requires energy when moving molecules against a concentration agent. It requires for specific membrane transport proteins. Only a certain type of protein can move a certain type of substance.

The three main types of Active Transport are:
1) Sodium-Potassium Pump
2) Endocytosis
3) Exocytosis

Answer:

Short answer-False

Explanation:

Write a summary statement for saturated fats including whether they are solids or liquids at room temperature and weather they have all single carbon-to-carbon or at least one carbon-to-carbon bond

Answers

Answer:

A saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds. A fat is made of two kinds of smaller molecules: glycerol and fatty acids. Fats are made of long chains of carbon atoms. Some carbon atoms are linked by single bonds and others are linked by double bonds. Double bonds can react with hydrogen to form single bonds. They are called saturated because the second bond is broken and each half of the bond is attached to a hydrogen atom.

Explanation:

Answer:

saturated fats consists of single covalent bond and they are solid at room temperature and their melting point increases with increasing chain length

hope it helps

Explanation:

Grass and fruit trees are not living organisms. true or false

Answers

This statement is false.
Grass and Fruit Tree are all living organisms. When you say living organism, it contains life. Grass and trees do grow and needs nutrients the same as human, they also contribute to the environment to give life.

Which of the following cell organelles do both prokaryotic and eukaryotic cells have?A. Golgi apparatus

B. ribosomes

C. mitochondria

Answers

Answer:

Option B, Ribosomes

Explanation:

Ribosome exists in both free state and also as a membrane bound organelle. Thus, ribosomes is found in both the eukaryotic and prokaryotic cells as it is an essential component that facilitates the translation of RNA and formation of protein.

Golgi apparatus and mitochondria are membrane-bound organelles and all membrane-bound organelles are found in eukaryotes only. Prokaryotes do not have membrane-bound organelles

Thus, option B is correct

They both have ribosomes, so the answer is B.

How does photosynthesis in a purple bacterium (Class Anoxyphotobacteria) differ from photosynthesis in an oak tree?

Answers

It differs due to the life cycle of each tree, and the very specific way the trees go.

Please help me asap!!!

Answers

I believe it would be the 4th diagram since the lit up side of the moon is directly facing earth

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