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aleksandr82 [10.1K]
3 years ago
12

Progressive changes in fossils of different ages provides one of the strongest lines of evidence for

Biology
1 answer:
kykrilka [37]3 years ago
3 0
Are there any options you can provide?
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6. Cell membranes are primarily composed of a double layer of phospholipids. Why are phospholipids particularly
Andrews [41]

Answer:

B i hope this help

Explanation:

The cell membrane consists primarily of a thin layer of phospholipids which spontaneously arrange so that the hydrophobic "tail" regions are shielded from the surrounding polar fluid, causing the more hydrophilic "head" regions to associate with the cytosolic and extracellular faces of the resulting bilayer. This forms a continuous, spherical lipid bilayer approximately 7 nm thick, barely discernible with a transmission electron microscope.

The arrangement of hydrophilic and hydrophobic heads of the lipid bilayer prevent polar solutes (e.g. amino acids, nucleic acids, carbohydrates, proteins, and ions) from diffusing across the membrane, but generally allows for the passive diffusion of hydrophobic molecules. This affords the cell the ability to control the movement of these substances via transmembrane protein complexes such as pores and gates.

8 0
3 years ago
One of the best ways to determine the adequacy of peripheral circulation is to check the pedal pulse. To check the pedal pulse,
Alex Ar [27]

Answer:

A or E

Explanation:

Check for either the dorsalis pedis pulse(on top of the foot) or the posterior tibial pulse(located behind the ankle bone).

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3 years ago
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Please help me out!!
stiv31 [10]

Answer:

It is most likely C

Explanation:

People get sick and maybe the twin/sibling has a medical condition that may interrupt the experiment.

5 0
3 years ago
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1: Describe the events of the muscle stimulation and contraction starting with the influx of Ca at the synaptic knob (of the neu
meriva

Answer:

Explanation:

motor neuron is the neuron that have it's connection to a muscle at the neuromuscular junction,. At his junction, a synaptic cleft that has a motor end plate is formed by the activity of the terminal called "synaptic terminal". Diffusion of the acetylcholine across the synaptic cleft then occur which result to the sarcolemma been depolarized, as a result of the depolarization there is a output of Ca2+ and muscle contraction

The effect that botox have on the neuromuscular junction and its function is that there is interaction between Botox and neural transmission which obstruct the acetylcholine to be released, which result to paralysis of muscle.

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3 years ago
Which label should Megan add to complete her chart?
GREYUIT [131]

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Megan should add Maple, 39%

OAmalOHopeO:

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