Aldolase B is then converted into 2 products, DHAP and glyceraldehyde. These products can easily enter the glycolysis cycle to make ATP for our bodies. ATP is energy. A5. Role of Aldolase B The role of aldolase B is to help with the breakdown of fructose.
• What is the role of the citric acid cycle? Include the reactants and the products. Where does it occur? The role of the citric acid cycle is to turn pyruvic acid into ATP and giving off CO2. This happens inside of the mitochondria.
This causes the anterior pituitary gland to produce and secrete a hormone (adrenocorticotropic hormone) that travels through the circulatory system. When the hormone reaches the adrenal cortex it binds to a cell-surface receptor, which signals the synthesis and release of cortisol. Answer B: A tropic hormone stimulates the synthesis and secretion of a hormone by another endocrine gland. The releasing hormone secreted by the hypothalamus stimulates the release of a hormone by the anterior pituitary, so it is a tropic hormone. The hormone secreted by the anterior pituitary stimulates the secretion of a hormone by the adrenal cortex, so it is also a tropic hormone.
Axons speak. Neurons transmit messages when stimulated by signals from our senses or when triggered by chemical signals from other neurons. In response to this a neuron fires an impulse called the action potential. When a neuron fires the first section of the axon opens it gates and positively charged sodium ions flood through the cell membrane. This depolarizes that axon section, causing another axon gate to open, and then another, like a line of dominos.
The three solutions were, ATP, KCl+MgCl2 and the combination of both. The fibres of muscle were measured before and after the solutions were applied and the contraction was apparent in the fibre the was exposed to ATP+KCl+MgCl2. What can be concluded from the data is that muscle cells require ATP as well as KCl and MgCl2 in order for there to be contraction. Introduction: Muscles are one of the main structures of movement in any animal or human being without the ability natural selection would have definitely weeded us out by now. There are three main types of muscle cells.
Answer Oxygen evolution requires continuing passage of electrons through PSII. Electrons will continue to flow through PSII and the cytochrome b6 f complex until the energetic cost of pumping a proton across the thylakoid membrane exceeds the energy available from absorption of a photon. This point is soon reached when proton flow through CFoCF1 is blocked by venturicidin, and oxygen evolution ceases. Addition of an uncoupling agent provides a route for protons to move through the thylakoid membrane, dissipating the energy of the proton gradient. Electrons can now continue to move through PSII and the cytochrome b6 f complex, and oxygen is produced in the water-splitting reaction.
The function of these muscles is closely related to their structure and any differences in structure allow these two types of muscle to be identified. Cardiac and skeletal muscle is excitable tissue where stimulation of a single muscle fibre leads to excitation of a whole cell. They undergo contractions in response to an action potential, either resulting in pumping blood into pulmonary and systemic circulation or the movement of limbs. The contractile unit in both tissues is the same, the differences lie in the arrangement of these units and associate structures. The contractile unit consists of myofibrils which encompass repeating units of sarcomeres running end to end giving a striated appearance to the muscle.
| |[pic] |For movement we require skeletal muscles to contract for force and power production. | | |The intensity and duration of the exercise will determine the type of muscle fibres recruited and | | |the force and frequency of the contraction. | | |Type I muscle fibre: Slow twitch. | | |Type II muscle fibre: Fast twitch. | | |Average person has equal amounts of Type I and Type II.
3. This causes a response in the neuron for example excitation 4. The neurotransmitters are broken down in the synaptic cleft by enzymes and recycled or taken back into the synaptic knob and
It’s broken down into the somatic nervous system and the autonomic nervous system. The somatic nervous system consists of nerves that provide voluntary control over skeletal muscle contraction. The autonomic nervous system consists of sympathetic and parasympathetic nerves that provide involuntary control over smooth muscle, cardiac muscle, and gland activity and secretions. One is thought of as the accelerator and the other, the brake; or “fight or flight” and “rest and digest” respectively. The sympathetic nerves increase the heart rate, constrict blood vessels to raise blood pressure, and elicit a “fight or flight” response.