Which best describes the brain stem?

Answers

Answer 1

Answer: The best description about the brain stem is: it is the most important organ of our body's survival. It connects the brain and the spinal cord, controls the vital organs like the lungs and heart and it also coordinates the many essential body reflexes.

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The connection between the mother and the embryo that provides the embryo with oxygen and nutrients and waste disposal is the ______.A.) amnionB.) cervixC.) fallopian tubeD.) placenta
A man with type A blood marries a woman with typeb. Their offspring all have type AB blood. The pattern of inheritance is called
Which types of questions can most likely be answered through scientific investigation
Asexual reproduction results in ________ cells, while sexual reproduction results in _________ cells. (choose the best answer.) * 1 point
Looking at a cell under a microscope, you note that it is a prokaryote, how do you know?A) The cell lacks cytoplasm. B) The cell lacks cell membrane.C) The cell lacks nucleus.D) The cell lacks genetic material.

What is the function of chlorophyll a?

Answers

Answer:

photosynthesis

Explanation:

Chlorophyll a absorbs the wavelengths of violet-blue and orange-red light and functions as a primary electron donor during the election transport chain in photosynthesis. It also functions in transporting energy to the reaction center where P680 and P700 are located.

This is just so it can make the plants green

Describe how Mendel showed that the green-seed trait did not disappear but was only masked.

Answers

Mendel had determined that the allele for green seeds had not vanished because after the second generation of yellow seeds, green seeds started appearing again. He logically concluded that the yellow allele was a dominant trait and the green allele was a nondominant trait.

a population ecologist determines the number of a oak trees per square unit in a forest. what is he trying to infer by doing so?

Answers

The population ecologist is trying to determine the density of the oak trees in a forest. It is a part of the job of a ecologist. By detecting the density of the oak trees, an ecologist can easily determine whether the density of the oak trees are decreasing or increasing with time and what are the steps that need to be taken to keep the balance.

Which of these is likely to result in the most competition? a. organisms that live in different ecosystems
b. organisms that use the same resource
c. organisms that live in the same area
d. organisms that are classified in the same phylum

Answers

a. organisms that live in different ecosystems
- if they live in different ecosystems, they won't compete, wrong answer!

b. organisms that use the same resource
-this is the best answer! they would compete over this resource!

c. organisms that live in the same area
-this makes competition possible, but more aspect are needed, for example they need to want the same resource (if you only eat apples and y our friend only eats ants, you won't compete)

d. organisms that are classified in the same phylum
-no, they can for example live in different ecosystems!

Answer:

b. organisms that use the same resource.

CAN SOMEONE HELP ME PLEASE Nerve cells called _______________ form networks within the body (like a system of wires), in order to communicate with each other in a type of chain reaction.Neurons

Myofibrils

Sarcomeres

Answers

Neuron is the correct answer. They form a network that is connected to the brain through the spinal cord. This results in an impulse which allows you to do whatever it is you have to do.

Proteins are composed of which of these subunits? Select one: a. amino acids b. glucose molecules c. fatty acids d. nucleotides

Answers

Subunits of Major Macromolecule Groups:
Lipid - Fatty Acid
Protein - Amino Acid
Nucleic Acid - Nucleotide
Carbohydrate - Polysaccharides (including glucose)

Proteins are composed of amino acids. Glucose molecules make up sugars and starches. Fatty acids make up, big surprise, fat molecules (unsaturated having double bonds between carbon atoms). Nucleotides make up DNA and RNA.

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The respiratory system depends on the nervous system for signals toa. coordinate the muscles that control breathing.b. exchange gases with the circulatory system.c. enhance the amount of available oxygen in the lungs.d. release enzymes to increase the exchange of gase

Mapa conceptual sobre el microscopio Urgente

What are marks left in rocks of once-living organisms called?

A closer cross-section view of a stem revealed continuous rings along the interior of the stem. Which type of stem could it be?. . A. Herbaceous dicot stem. B. Woody dicot stem. C. Monocot stem