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grin007 [14]
3 years ago
12

Why are most factors held constant in a scientific experiment

Biology
1 answer:
kotegsom [21]3 years ago
3 0

A proposed explanation for a wide range of observations and experimental results that is supported by a wide range of evidence. ... Most factors are held constant in a scientific experiment because you can only change one factor in an experiment so if you notice something, you'll know what caused it.

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How do living cells use the instructions in their DNA to perform tasks?
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DNA contains the instructions to help the cell survive. They help the cell produce protein in the stages of protein synthesis.

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Dendrites:
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The correct answer is letter C. Dendrites <u>receive information from other neurons or from the external environment.</u> Dendrites are part of the neurons that are responsible for receiving information from the axon and the synapses that occur within the Central and Peripheral Nervous System. These dendrites branch off into multiple other synapses in order for the body to create a long chain of nerve impulses.<u />
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Pick one of anna's illnesses and explain all of the ways the illness affected three different body systems.
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Heart disease affects the cardiovascular system by plaque building up on the artery walls narrowing them making it harder for blood to flow through which could lead to heart attack or probably stroke if the plaque blocks it entirely or maybe almost entirely.

Heart disease may also affect our nervous system for there is higher risk to stroke and it is due to limited flow of blood to the brain and may lead to heart failure which may happen with heart disease that puts the stress on the brain and nerves.

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7 0
3 years ago
What pigment, only present in plants, makes photosynthesis possible?
aev [14]
C is your answer so pick c
7 0
3 years ago
Read 2 more answers
"We are very familiar with two things found in large woody plants, wood and bark. The wood is essentially made of ________ and t
valina [46]
<h2>Xylem;phloem and cork</h2>

Explanation:

Wood is mainly known as secondary xylem found in trees

  • Xylem is basically the vascular tissue which is responsible for the conduction of water and nutrients from the roots to shoots and leaves
  • Secondary xylem is formed from secondary growth and is associated with lateral growth and grows from the vascular cambium
  • Its cell walls are thickened by deposition of lignin which provides mechanical support to plants and consists of tracheids and vessels that are shorter and wider
  • In large woody plants secondary xylem get differentiated into heartwood and sapwood

Bark is essentially made of phloem and cork

  • Bark sole purpose is to provide protection to trees
  • The inner bark is produced by vascular cambium which consists of secondary phloem whose innermost layer transports food from the leaves to rest of the plant
  • The outer bark is a dead tissue which is the product of cork cambium
8 0
3 years ago
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