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sergey [27]
3 years ago
11

What are the two classes of pure substances?

Biology
2 answers:
Viefleur [7K]3 years ago
8 0

Elements and compounds

Alenkinab [10]3 years ago
5 0

Answer:

Elements and compounds

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Select all that apply. What characteristics do mutations have?
Vinil7 [7]
Well mutations can be a positive or a negative feature. Some mutations can be used as a camouflage so stay safe from predators. Other mutation could give off a bright color which would make it hard to stay hidden from predators.
Hope This Helps!
4 0
3 years ago
Anyone know about cellular respiration? Please help me label, 60 points!
matrenka [14]

Answer:

Mitochondria- glycolysis

ATP synthase- converts ADP to ATP

Inner membrane- electron transport chain

Matrix- krebs cycle

Explanation:

The mitochondria forms the fundamental site for glycolysis. The glucose is broken down enzymatically to produce carbon dioxide, water and ATP. The krebs cycle is the first stage of aerobic respiration. It takes place in the mitochondrial matrix. ATP synthase is an enzyme that generates ATP during the process of cellular respiration. ATP synthase forms ATP from ADP and an inorganic phosphate (Pi) through oxidative phosphorylation. The mitochondrial inner membrane is the site of the electron transport chain, an important step in aerobic respiration.  Energy obtained through the transfer of electrons down the ETC is used to pump protons from the matrix into the intermembrane space, creating an electrochemical proton gradient generating ATP.

8 0
3 years ago
Which one of the following statements does not accurately describe vibrations? 
brilliants [131]
The correct option is A.
When an end of a tuning fork that is vibrating is placed against a table, it produces a sounder that is dramatically louder than the original sound produced by the vibrating tuning fork. At this stage, the tuning fork is forcing the table to vibrate at its own frequency. Thus, the statement in option A is not true. 
5 0
3 years ago
Read 2 more answers
Some birds are known as honey guides because they may be followed by humans to wild beehives. When the humans take honey from th
zloy xaker [14]

Answer:mutualism

Explanation:

In a mutualistic relation,both organisms involved benefit from the activities of each other. The benefits may be nourishment,shelter, protection etc.

In the above example,the birds are known to guide humans by responding to specific calls made by the human. They guide humans to beehives and then in return gets to feed on left over honey. Both the bird and human benefits by getting nourishment.

Mutualism is unlike parasitism where one of the organism involved benefits and the other organisms Is most likely harmed. It is also not commensalism, where one organism benefits and the other neither benefits nor is harmed

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3 years ago
Evolution is the process by which populations of organisms change over time. How could natural selection lead to evolution?
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