Answer:
The primary function of the plasma membrane is to protect the cell from its surroundings
Answer:
Chains of amino acids make Proteins which fold to make a complex three dimensional shape.
Answer:
1. sports medicine
2. gene therapy
3. Adrenal gland
4. false
5. Hormones
6. To regulate body activities (like growth and immunity) by sending chemical messages
Explanation:
1. Sports medicine is the branch of medicine that is related to physical fitness, so if the question ask for someone who is interested in athletic activity, the correct answer is number 4.
2. Gene therapy is an experimental technique that in order to treat or even to prevent disease genes are used to help with their treatment, so a person who is interested in genetics and its relation with health, the correct answer is number 2.
3. Adrenal gland this is the gland that sintetice Adrenaline also known as epinephrine which is a hormone or also a medicine that plays an important role in the fight or flight response, this hormone is the one in charge of giving us several symptom like tachycardia or dilated pupils in order to survive in dangerous situations, so the correct answer to Sarah's problem is number 1.
4. False the endocrine system serves as a messenger to regulate hormone synthesis and are secreted to the circulatory system.
5. Hormones, as we have answer before hormones are regulated by the endocrine system.
6. To regulate body activities (like growth and immunity) by sending chemical messages hormones play an important part in human development and growth, these chemical messages serve to regulate the synthesis (creation) and secretion (liberation) of the hormones in the specific quantity as the body needs them.
The two new strands are different from each other ,both of them have only one strand from the original DNA and the other strand is complementary . eg if a strand has the following base pairs .. AACCGGT ( consider this as the strands)
TTGGCCA
now they are going to be seperated AACCGGT TTGGCCA
TTGGCCT AACCGGT
as u can see the two NEW strands formed are similar but NOT IDENTICAL to each other .
Answer: B. The release of calcium ions causes myosin and actin to attach to each other. This statement best describes a cause and it's effects that occur during the process of muscle contraction.
Muscle contraction can be explained by sliding filament theory.
1. Activation of muscles: the motor nerve generates an impulse to transfer signals from neurons to neuromuscular junction. This stimulates sarcoplasmic reticulum to release calcium into the muscle cells.
2.Contraction of muscles: calcium in the muscle cells binds with troponin causes actin and myosin to bind. Actin and myosin in the muscle binds and contract by utilizing ATP as a source of energy.
