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Advocard [28]
3 years ago
11

What chemical directly provides the energy needed for muscle contraction?

Biology
1 answer:
schepotkina [342]3 years ago
4 0
Muscle contraction happens only when the energy molecule called adenosine triphosphate (ATP) is present
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If black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be ind
ludmilkaskok [199]

Answer:

Option B, Co-dominance

Explanation:

This is an example of codominance inheritance pattern.

When two alleles representing two different characteristic traits are expressed equally in the offsprings resulting from a cross, then this genetic inheritance pattern is called as codominance .

For example -

A red flower with genotype "RR" is crossed with a white flower "rr" resulting into pink color offsrping with genotype "Rr"

Here, both the red and white traits of flower color are expressed equally thereby giving pink color to the offspring flower.

The same thing is happening in case of true breeding black and white mice.

Hence, option B is correct

5 0
3 years ago
What is your stance on genetically modified foods? Are you for or against them?
Vinvika [58]
GMOs have a ton of pros and cons, so it's hard to say. Although, I personally would like to avoid them. With the amount of people who have gone gluten free, there's more of a reason for it than being a hipster or a yuppie. Because the demand for wheat is so high, we had to genetically modify it. Although this increased its abundance, a lot of humans' digestive systems haven't evolved with it. That is the reason why it makes so many people sick, because they cant digest it. If the rate at which GMOs are being created and nourished continues, it's likely our digestive systems will reject it, possibly causing famine due to the inability to eat our own food.<span />
4 0
3 years ago
Select TWO events that occur when a neurotransmitter binds and activates an excitatory synapse.
andrew-mc [135]

Answer:

Key points

Neurons communicate with one another at junctions called synapses. At a synapse, one neuron sends a message to a target neuron—another cell.

Most synapses are chemical; these synapses communicate using chemical messengers. Other synapses are electrical; in these synapses, ions flow directly between cells.

At a chemical synapse, an action potential triggers the presynaptic neuron to release neurotransmitters. These molecules bind to receptors on the postsynaptic cell and make it more or less likely to fire an action potential.

Explanation:

7 0
2 years ago
WILL MARK BRANLIEST!! HELP ASAP+20 POINTS!!!!!
docker41 [41]

Hi

your answer to this response will be

Paleontologists study fossils and their relationship to existing plants and animals. The work of these scientists helps us understand both the present and the past. For example, using their knowledge of how fossils are distributed in sediments, paleontologists can help make accurate geological maps.

so the answer is A)

i hope this help if i got it wrong im sorry

have a great evening

FaithRawlins14

3 0
3 years ago
What levels of protein structure would be affected if all hydrogen bonding interactions were prevented? check all that apply?
fgiga [73]

The proteins exhibit four levels of organization:  

1. Primary structure: It refers to a sequence of amino acids join together by the peptide bonds to produce a polypeptide chain.  

2. Secondary structure: It is a localized twisting of the polypeptide chain by producing a hydrogen bond. Two types are formed, that is, the alpha helix and beta pleated sheet.  

3. Tertiary structure: It refers to the three-dimensional composition of a polypeptide chain. The folding is not regular as it is in secondary composition. It produces ionic bonds, hydrophobic interactions, disulfide bond, and hydrogen bond amongst the polypeptide chains.  

4. Quaternary structure: It comprises an amalgamation of two or more polypeptide chains that functions as a single functional unit. The bonds are identical as in tertiary composition.  

Thus, the levels of secondary, tertiary, and quaternary protein structure would get affected if all the hydrogen bonding associations were inhibited.  


6 0
3 years ago
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