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densk [106]
2 years ago
7

What happens to the actin and myosin during a muscle contraction?

Biology
1 answer:
GuDViN [60]2 years ago
3 0

Answer:

<u>Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.</u>

<h3><u></u></h3>
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People who are lactose intolerant cannot extract energy from milk because:
Mekhanik [1.2K]

Answer:

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. People who are lactose intolerant cannot extract energy from milk because no lactase to digest the sugar into energy. To overcome the problem, food manufacturers began to create milk without lactose.

Explanation:

if this helpful can you make me as brainliest

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4 0
2 years ago
Chromosomes other than sex chromosomes are known as _____. autosomes alleles genes proteins
lianna [129]
The answer is autosomes.

<span>In a human diploid somatic cell (2n), there are 22 chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes - 22 pairs of autosomes and 1 pair of sex chromosomes. There are in total 46 chromosomes (23 pairs in 2 copies: 23 × 2 = 46).</span>

8 0
3 years ago
Read 2 more answers
A student in genetics class is studying the inheritance patterns in fruit flies. He is looking at the traits for wing length, lo
Step2247 [10]

Answer:

LLgg, Llgg , two out of 16

Explanation:

Given,

Dominant - Long wings and Gray color

Recessive - Short wings and Brown color

Let the allele for long wings be "L" and the allele for short wings be "l".

Let the allele for brown color be "g" and allele for gray color be "G"

Genotype of parents

LlGg

Gametes of the parent

LG, Lg, lG, lg

Dihybrid cross is between LlGg and LlGg

The offspring produces will be as follows -

LG        Lg         lG         lg

LG LLGG LLGg LlGG LlGg

Lg LLGg LLgg LlGg Llgg

lG LlGG LlGg llGG         llGg

lg LlGg Llgg         llGg         llgg

Offspring with long wings and brown color – LLgg, Llgg , two out of 16

6 0
2 years ago
(I already know number 1)
Andrej [43]
2. All cells arise from pre existing cells(Rudolf Virchow). Cell is the fundamental, structural and functional unit of all organisms(Schleiden and Schwann).
3. All cells have a cell membrane.
All cells have chromosomes present.
All cells have cytoplasm.
4.Eukaryotic cells contain a nuclear membrane but Prokaryotic cells have only pseudo nucleus
Eukaryotic cells contain membrane bound organelles but prokaryotic cells don't.
5 0
3 years ago
How do geologists find mineral deposits?
kvv77 [185]

Answer:

To find a mineral deposit, geologists study the geology of a lot of places. They then go to a spot where that type of mineral deposit could be found. They test the properties of the soil and rocks. They look at the chemistry and the physical properties.

Explanation:

8 0
2 years ago
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