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Goryan [66]
3 years ago
8

Which of the following answers describes the most direct consequence of tropomyosin binding to F-actin in muscle cells?

Biology
1 answer:
svetlana [45]3 years ago
7 0

Answer:

\rMyosin binding to F-actin is blocked

Explanation:

Tropomyosin is a protein involved in skeletal muscle contraction and that wraps around actin and prevents myosin from grabbing it. This prevents muscle contractions until the proper signal arrives. When the nervous system tells the muscle cell to contract, calcium is released.

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Explain how diffusion limits the size of a cell.<br> 9th grade level
Arisa [49]

Answer:

Diffusion is powerful over a particular distance and bounds the size that a character cellular can gain.

Explanation: If cellular is an unmarried-celled microorganism, consisting of an amoeba, it is able to satisfy all of its nutrient and waste needs via diffusion. If the mobile is too massive, then diffusion is useless at finishing all of these responsibilities.

8 0
3 years ago
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What is the meaning of life?Why are we chosen to live/be on this world?
Alexeev081 [22]

Answer:

A special characteristic of one living creature is to grow, to do metabolic processes to react to adapt and to reproduce.

Explanation:

The purpose of human life is to be aware of the existence, to understand existence,  to be responsible and to enjoy.

Why are we chosen to live in this world it is not known. There are theories that RNA plays an important part in this. The process that many forms of life developed through history by mutation and natural selection. And the most common answer to a question why are we here is the simple process of evolution.

3 0
3 years ago
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A mixture that has the same composition throughout is called a(n)
agasfer [191]

Answer:

Homogeneous Mixture

Explanation:

They are mixed

8 0
2 years ago
What is the correct order of events: Homologous chromosome separate Chromosome condenses Lining up on metaphase plate, Crossing
Sedbober [7]

Answer:

Chromosome condenses

Pairing up to form tetrad

Crossing over

Lining up on metaphase plate

Homologous chromosome separate

Explanation:

Condensation of chromosomes occurs in prophase I phase. Pairing up to form tetrad occur during prophase I. Crossing over occurs during prophase I of meiosis cell division. Chromosomes line up along the metaphase plate in the stage of Metaphase. Centromeres break down and homologous chromosomes separate in anaphase I phase of meiosis.

7 0
3 years ago
Heyy
Free_Kalibri [48]

1. Bees, flies, wasps, butterflies, and moths are significant insect pollinators. Moths are drawn to white flowers that are open at night, but bees and butterflies are drawn to brilliantly colored blooms with powerful scents that are open during the day.

<h3>What is pollination?</h3>

The act of moving pollen grains from an anther to a flower's stigma is called pollination. Flowers that are pollinated by insects typically generate a sweet nectar that the insects visit to consume. If a flower is self-pollinating, fertilization occurs when pollen stock from an insect contacts the stigma of the bloom. If the bug is bisexual, it will fly to another bloom and disperse the pollen.

2. Most flowers advertise themselves by being brightly colored and perched on long stems so they wave in the air and are closer to where insects are flying, as opposed to on the ground, where they would otherwise be. A flower's petal sizes and shapes, in addition to color, can draw insects.

3. Flowers draw insects because of their aroma or vibrantly colored petals. Nectar is a delicious liquid that many flowers generate that is consumed by insects. The female part of the flower is the carpel.

Answer 2. Flowers that are pollinated by insects have characteristics that enable insects, birds, or other animals to pollinate them while consuming the nectar. When an insect brushes by the stigma of a flower, whether it is the same bloom or another, pollen grains will adhere to the insect's outer layer and stick to the flower's stigma, pollinating the flower. When the two seˣ cells combine, fertilization occurs, the ovule develops into a seed, and the ovary becomes a fruit. The pollen grain then grows a pollen tube down the style to reach the ovary, which contains the ovules.

For more information regarding pollination, visit:

brainly.com/question/20563422

#SPJ1

6 0
2 years ago
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