Biology

The limbic system in the central nervous system sustains many vegetative functions in mammals and is closely associated with structures that process cues about *

26- The limbic system in the central nervous system sustains many vegetative functions in mammals and is closely associated with structures that process cues about * 0/1 vision. gustation. olfaction. mechanosensation audition. EXPERT ANSWER The answer is Olfaction. EXPLANATION: Limbic system is a complex of nerves and neural networks in the brain. It involves several …

The limbic system in the central nervous system sustains many vegetative functions in mammals and is closely associated with structures that process cues about * Read More »

Match the glial cell type with its function. You will match some cells with more than one function. Myelinates axons in the periphery. A. ependyma Myelinates axons in the central nervous system. B. astrocytes – Myelinates more than one axon. C. microglia Has endfeet on neurons to help provide nutrients to them. D. Schwann cells Does much of the clean up of debris in the central nervous system. E. oligodendrocytes Lies around neuron cell bodies and dendrites in the central nervous system to provide physical support. Found lining spaces within the central nervous system. Helps damaged axons to regrow.

EXPERT ANSWER 1.schwann cells -myelinates axon the periphery. 2.oligodendrocytes- myelinates axon in the central nervous system. 3.oligodendrocytes- myelinates more than one axon 4.Astrocytes -has endfeet on neuron to help to provide nutrients to them. 5.microglia-Does which clean up the debris in the central nervous system. 6.microglia  lies around neurons and dendrites in central nervous system and provide physical support. 7.ependyma-found …

Match the glial cell type with its function. You will match some cells with more than one function. Myelinates axons in the periphery. A. ependyma Myelinates axons in the central nervous system. B. astrocytes – Myelinates more than one axon. C. microglia Has endfeet on neurons to help provide nutrients to them. D. Schwann cells Does much of the clean up of debris in the central nervous system. E. oligodendrocytes Lies around neuron cell bodies and dendrites in the central nervous system to provide physical support. Found lining spaces within the central nervous system. Helps damaged axons to regrow. Read More »

The divisions of the nervous system that have antagonistic, or opposing, actions are motor and sensory systems central nervous system and peripheral nervous system sympathetic and parasympathetic systems presynaptic and postsynaptic membranes

EXPERT ANSWER Answer: Sympathetic and parasympathetic systems. The parasympathetic nerves prepare the body for fight or flight response during potential danger. Where as sympathetic nerves inhibits the body from overworking and allow the body to be calm.

You measure the initial rate of an enzyme reaction as a function of substrate concentration in the absence and presence of an inhibitor. The enzyme is known to follow Michael is-Menten kinetics. The following data are obtained: (A) V_max for the enzyme in the absence of inhibitor is. Explain in one sentence how you determined V_max. (B) for the enzyme in the absence of inhibitor is. Explain in one sentence how you determined K_max. (C) Is the inhibitor likely to be competitive, uncompetitive, or mixed? Why?

EXPERT ANSWER

Which statement describes the functioning of photosystem II?

Which statement describes the functioning of photosystem II? Select one: a. Light energy transfers electrons to cytochrome C. b. The electron vacancies in P680 are filled by electrons derived from water. c. The P680 chlorophyll donates a pair of protons to NADPH, which is thus converted to NADP+. d. The excited electrons are passed along …

Which statement describes the functioning of photosystem II? Read More »

Question 2 In a plant, the reactions that produce molecular oxygen (O2) take place in the light reactions alone the Calvin cycle alone the light reactions and the Calvin cycle neither the light reactions nor the Calvin cycle Moving to the next question prevents changes to this answer.

EXPERT ANSWER Answer) Light reaction alone. Photosynthesis takes place in chloroplast of plant cell. There are two phase: Light phase: ATP and NADPH are synthesized for Calvin cycle. The water is splitted in PSII to produce oxygen, electron and protons. Calvin cycle: The glucose is synthesized. Oxygen is not produced in this phase.

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle? Select one: O a. The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. O b. The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. O c. The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions. O d. There is no relationship between the light reactions and the Calvin cycle. O e. The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions.

EXPERT ANSWER Answer c: The light reaction provides ATP and NADPH to the Calvin cycle and it returns ADP, pi, NADP+ to light reactions. There are two parts to photosynthesis: 1.The Light reaction: As the name suggests it coverts the light energy from the sun into chemical compounds that is ATP and NADPH The following …

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle? Select one: O a. The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. O b. The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. O c. The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions. O d. There is no relationship between the light reactions and the Calvin cycle. O e. The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions. Read More »

In C3 photosynthesis, the reactions that require ATP take place in

In C3 photosynthesis, the reactions that require ATP take place in a. both the light reactions and the Calvin cycle. b. neither the light reactions nor the Calvin cycle. c. the light reactions alone. d. the Calvin cycle alone. e. the chloroplast, but are not part of photosynthesis. EXPERT ANSWER In C3 PLANTS PHOTOSYNTHESIS OCCUR IN …

In C3 photosynthesis, the reactions that require ATP take place in Read More »

Which of the following are produced by reactions that take place in the thylakoids and consumed by reactions in the stroma? a. CO2 & ATP b.ATP & NADPH OC. NADP+ & ADP d.CO2 & H2O What enzyme is responsible for separating the two strands of DNA during replication? O a single stranded binding proteins ob. helicase oc. ligase od. DNA polymerase In garden pea plants, round seeds are dominant to wrinkled seeds. If a heterozygous plant is crossed with a wrinkled seeded plant, what is the phenotypic ratio of the offspring? O a. 2:2 ob.3:1 O c. 2:1 O d. 4:0

EXPERT ANSWER (b) ATP & NADPHNADPH and ATP are produced by the light reactions on the stroma, and they are more readily available for the Calvin cycle, which consumes by the stroma. (b) Helicase:DNA Helicase: The enzyme responsible for separating the two strands of DNA in a helix so that they can be copied during …

Which of the following are produced by reactions that take place in the thylakoids and consumed by reactions in the stroma? a. CO2 & ATP b.ATP & NADPH OC. NADP+ & ADP d.CO2 & H2O What enzyme is responsible for separating the two strands of DNA during replication? O a single stranded binding proteins ob. helicase oc. ligase od. DNA polymerase In garden pea plants, round seeds are dominant to wrinkled seeds. If a heterozygous plant is crossed with a wrinkled seeded plant, what is the phenotypic ratio of the offspring? O a. 2:2 ob.3:1 O c. 2:1 O d. 4:0 Read More »