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o-na [289]
3 years ago
14

Brain cells and red blood cells receive most of their energy directly from_________

Biology
1 answer:
V125BC [204]3 years ago
6 0
From oxygen and sugar
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Factors that remain constant from experiment to experiment are the
alexandr402 [8]

Answer:

Factors that remain constant from experiment to experiment are the constants.

Explanation:

A constant in an experiment is also known as a <em>control variable</em>. It is the part of an experiment that must stay the same in order to validate the experiment. If the constant were to change, the results would be skewed and therefore false.

i.e. you want to test the rate of growth of lima bean plants in different types of lighting. You believe that a lima bean plant that grows in yellow will grow faster and stronger than a lima bean plant that grows in blue or red light.

In this experiment, the constant would be the lima bean plant. You cannot change the type of seed or else your experiment is invalidated. If you tried to use a sunflower seed in the blue lighting and a tomato seed in the red lighting, your results would be invalidated and skewed.

7 0
3 years ago
A skeleton is found that has a narrow pelvis, large occipital protuberance, and a sloping forehead. Is the skeleton a biological
11111nata11111 [884]

Answer: Male

Explanation:

The pelvis is narrow in males, the pubis arch is 90 degrees in angle. It is broad in case of females to support pregnancy and child birth. Also the pubis arch is more than 90 degrees in angle. An occipital protuberance is a region that connects the head to the neck and it is generally larger in males than in female. In males the forehead is sloping in the cranium whereas that in females it is vertical and flat.

Hence, the skeleton have the features that can be indicated towards the features of a male.

8 0
3 years ago
What form of genetic drift occurs from
belka [17]

Answer:

The correct answer is - B. disruptive selection.

Explanation:

Adaptive radiation is a type of genetic drift that relatively fast evolution of many species from a single common ancestor which means there is a big drift in a very small time.

Disruptive selection is a type of natural selection that shows phenotypes (individuals with groups of traits) of both extremes but has very few individuals in the middle. An example of this type is the evolution of mammals after the extinction of dinnosaurs.

4 0
3 years ago
How do animals get the carbon atoms to form the CO2 molecules that they exhale ?
QveST [7]
Wanna play fortnite with me

4 0
2 years ago
If two species of bacteria use glucose as an electron donor, but species a uses oxygen as the final electron acceptor and specie
Vlad [161]
Species B would need about 60% more glucose to generate the same amount of ATP as species A. This is because molecular oxygen is a highly oxidizing agent and therefore, is an excellent electron acceptor compared to other less-oxidizing substances such as sulfate, nitrate or fumarate. 
5 0
3 years ago
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