1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mkey [24]
3 years ago
11

During the second and third trimesters of pregnancy, a daily increase of __________ calories is recommended

Biology
1 answer:
xz_007 [3.2K]3 years ago
6 0
Hey There

Correct answer: <span>During the second and third trimesters of pregnancy, a daily increase of <u>healthy </u>calories is recommended

Why?  Because you need more food to help the baby grow, you are eating for two people

Have a good day</span>
You might be interested in
Check all that apply as characteristics of myelinated axons. Check All That Apply Myelinated axons transmit nerve impulses via c
stiv31 [10]

Answer:

Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.

Myelinated axons are more energy efficient than unmyelinated axons.

Explanation:

Neurons are cells that specialize in transmitting messages to each other using a type of electrical signal. These signals carry information from outside your body to the brain, while others are the instructions for the various organs, glands and muscles to carry out functions.

Neurons receive these signals from other neighboring neurons through their dendrites. The signal then travels to the soma of the neuron, which is the main body of the cell, and finally<u> travels down the axon to the synaps</u>e (space between the end of a neuron and another cell). The axon is a neuronal extension through which the electrical signal travels, extending from the soma to other neurons.

<u>There may be layers of myelin, which consist of a layer of fat, covering the axons and where they have the function of acting as insulators to help keep the electrical signal inside the cell, which makes it move faster increasing the speed of transmission of the nerve impulse</u>.

1) Myelinated axons transmit nerve impulses via continuous conduction. FALSE. In the axon, nodes of Ranvier are found at regular intervals along the length of the axon in the myelin sheath that surrounds it. These are small spaces that expose the axon membrane to the extracellular fluid and serve to allow the nerve impulse to travel faster, in a jumping manner and with less chance of error.

2) Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons. FALSE. In an unmyelinated axon, the movement of voltage across the membrane is due to ion flux that is limited by the time it takes for sodium ions to diffuse into the axon. Myelinated axons conduct faster because they are shorter than unmyelinated axons. In the latter, transmission is continuous but slower.

3) Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter. TRUE. The action potential conduction jumps from node to node, thereby they need fewer voltage-gated channels. Unmyelinated axons need voltage-gated channels in along the entire axon.

4) Myelinated axons are more energy efficient than unmyelinated axons. TRUE. The rate at which sodium input through one node can depolarize the axon at the next node is related to the current and capacitance across the membrane. Myelinated axons have faster action potential conduction because it jumps from node to node, thereby they use less energy because they don't have to travel the entire length.

5) Myelinated axons would be unaffected by diseases that attack the CNS. FALSE. For example, Multiple sclerosis (MS) is a demyelinating disease of the CNS in which the immune system attacks the myelin sheath or the cells.

6 0
3 years ago
Whose system of classifying and naming organisms is still in use today?
Kisachek [45]
The system is called Taxonomy and was made by Swedish botanist Carlous Linnaeus
7 0
3 years ago
Why dominant traits may not necssairly be more common in a population
nataly862011 [7]
This isn't always the case and there is no reason it should be .Whether or not a trait is common has to do with how many copies of that gene version (or allele) are in the population. It has little or nothing to do with whether the trait is dominant or recessive. Let's take eye color as an example.
8 0
3 years ago
Resumen de la excrecion​
lakkis [162]

Answer:

Summary of Excretion so yea :()

4 0
3 years ago
4. Which of these best explains the organization of the biosphere?
nasty-shy [4]

Answer:

the answer is A.groups of biomesmake up a community, andand groups of populations make up a biome.

8 0
3 years ago
Other questions:
  • Which diagnostic analysis is used to identify patients with heart failure? (select all that apply.)?
    9·1 answer
  • Instead of teeth whales in the suborder mysticeti have
    9·1 answer
  • Illustrate the position of the Earth, moon, and sun during a solar eclipse. You may do so by typing the words or by drawing and
    5·1 answer
  • Students were given a list of seven elements and asked to identify the four elements that are most abundant in biomolecules. Whi
    6·1 answer
  • In the FIRST stage of photosynthesis, Group of answer choices The Calvin cycle takes place Carbon dioxide is utilized Sunlight
    5·2 answers
  • Drag each tile to the correct box.<br> Arrange the layers and faults from oldest to youngest.
    15·1 answer
  • What problems would a person most likely have if his pancreas was not working correctly
    9·2 answers
  • An operon encodes enzymes for making an essential amino acid and is regulated like the trp operon. Which of the statements is tr
    13·1 answer
  • My parents are too hard on me to get good grades and it stresses me out. Help!
    6·2 answers
  • What are 4 things plants need to perform photosynthesis
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!