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Sedaia [141]
3 years ago
8

A plant is treated with a chemical that blocks the flow of electrons between photosystem II and photosystem I, such that protons

are not transported from the stroma into the thylakoid compartment. What is the effect of this chemical on photosynthesis?
Biology
1 answer:
Sindrei [870]3 years ago
6 0

Answer:

Reduce or stop the production of energy molecule i.e ATP

Explanation:

Proton is an essential ingredient to carry out light reactions successfully and the proton requirement is fulfilled through the proton gradient formed along the membrane. A chemical that blocks the flow of electrons thereby hindering the flow of proton will adversely affect the electron transport chain reactions thereby causing reduced/no conversion of ADP to ATP.  

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Assuming one nerve impulse must end before another can begin, what is the maximum firing rate of a nerve in impulses per second?
pav-90 [236]

Answer:

The correct answer is - 10³ seconds.

Explanation:

The nerve impulse is an electrical signal in which fluctuation in membrane potential occurs and forms an electrical signal that takes place that travels along the axon to the synapses.

Suppose a nerve impulse starts only when the first impulse ends according to the question so the one impulse last for the 10⁻³ second or 1 ms.  

Thus,  the nerve impulse fires per second will be equal to impulse generate in each second which is 1/10⁻³ = 10³.

Thus, the correct answer is - 10³ impulse per second or 1000 impulse per second.

5 0
3 years ago
How does cellular respiration demonstrate the conservation of mass?<br> GIVING BRAINLIEST
Ostrovityanka [42]

Answer:

Mass is conserved in living systems through the processes of photosynthesis, cellular respiration, and the carbon cycle. It is demonstrated in cellular respiration through the process of braking down food to provide energy and releasing carbon dioxide.

Explanation:

6 0
2 years ago
Describe two force tht affect the motion of the child as she moves down the slide
Airida [17]
Gravity is pulling her towards the ground but also forward as the child is on a slope. Friction is pulling against the child as the slide pulls against her.
4 0
3 years ago
in humans, a combination of XX chromosomes results in a female zygote and that of XY result in a male zygotes. From whom does th
devlian [24]
The answer is: from mother

In a human diploid somatic cell (2n), there are<span> in total 46 chromosomes</span> - 22 autosomal chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes. In males, there is one X and one Y chromosome (XY) while in females, there are two XX chromosomes (XY).
During the formation of gametes, a female could give only X chromosomes, so gametes from the mother contain one X chromosome. But, a male could give X or Y chromosome, so gametes from the father contain either X or Y chromosome.
Female gamete and male gamete fuse to form a zygote. Male zygote must contain both X and Y chromosome. It inherits Y chromosome only from the father, so X chromosome must be inherited from the mother.
6 0
3 years ago
What type of reaction is combustion of coal? A. endothermic B. physical C. heat-absorbing D. exothermic
nydimaria [60]
Exothermic - hope that helps x
4 0
3 years ago
Read 2 more answers
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