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bezimeni [28]
3 years ago
5

The greatest mitotic activity in a root takes place in the

Biology
1 answer:
arlik [135]3 years ago
7 0
B) meristematic zone
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Which of these changes occurs near the end of the third trimester of fetal
umka2103 [35]

Answer: OC. The fetus begins to move to a head-down position.

Explanation: This happens after other features of the baby are also finishing development, such as eyelashes and eyebrows. The lungs are also the last major organ to finish developing during this time.

5 0
3 years ago
Imagine a postsynaptic neuron is experiencing multiple simultaneous incoming synaptic potentials, which were caused by the activ
SashulF [63]

Answer:

The neuron will not fire an action potential.

Explanation:

The missing magnitudes of the synaptic potentials when they reach the postsynaptic cell's axon hillock are:

A. excitatory +7

B. excitatory +10

C. inhibitory -3

D. excitatory +2

E. inhibitory -4

To fire the action potential, the summation of excitatory postsynaptic potentials (EPSP) and inhibitory postsynaptic potentials (IPSP) must reach the action potential threshold, which in this case is 15mV more positive than the resting potential.

The EPSP are: +7 +10 +2= +19

The IPSP are: -3 - 4= -7

EPSP + IPSP=

+19 -7 = +12 mV

The neuron will not fire an action potential since the integration of EPSP and IPSP is below 15mv.

6 0
3 years ago
You want to know if feeding rabbits corn is better for their growth than the normalfed pellets that they eat. You have 20 rabbit
Alex777 [14]

Answer:

Independent is type of food

Dependent is the growth

Explanation:

Independent= What "I" Change: Food

Dependent= Depends on what I change:Growth

6 0
4 years ago
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What is the probability of the offspring having brown eyes (dominant) if the father has the "bb" genotype and the mother has the
nikdorinn [45]

Answer:

1 or 100%

Explanation:

Assuming that the allele B (brown) is dominant over the allele b, crossing the father and the mother:

          BB    x    bb

      Bb    Bb    Bb    Bb (you can also see the Punnet's square)

All the offspring would exhibit the dominant phenotype which is brown. Hence, the probability of the offspring having brown eyes is 100% or simply 1.

7 0
3 years ago
In what way are plants in a sunny meadow and sulfur bacteria in a deep sea vent alike
natita [175]
The correct answer is that both <span>both produce carbohydrates and water. Plants to do it in a process called photosynthesis, and they produce oxygen as well and sulfur bacteria do it in a </span>process called chemo-synthesis, and they produce sulfur apart from carbohydrates and water.
8 0
3 years ago
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