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Scrat [10]
3 years ago
6

How do you know you exist?

Biology
2 answers:
Serga [27]3 years ago
8 0

Answer:

through ur senses lol good question

Explanation:

olchik [2.2K]3 years ago
3 0

Answer:

Umm if people see you and talk to you thats how you know your living in earth hope this helps?

Explanation:

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Enzymes function most efficiently at the temperature of a typical cell, which is 37
Dvinal [7]

Answer:

I believe the warmer the heat is the molecules will speed up and the cooler the molecules are the slower it'll be

8 0
3 years ago
Describe the structure of mitochondria and explain their role in respiration .
oksano4ka [1.4K]
The mitochondria is a double membraned organelle, the inner of these membranes is invaginated to form structures called cristae. The fluid inside is called the mitochondrial matrix. The mitochondria has a pivotal role in the creation of ATP in aerobic cellular respiration. Glycolysis occurs outside the mitochondria, producing pyruvate and ATP, the pyruvate endures the link reaction on its way into the mitochondrial matrix and turns into acetyl co enzyme A. This acetyl group is used in the matrix in what is called Krebs cycle, where the oxidation of acetyl groups is coupled with the reduction of hydrogen carriers. The products of Krebs cycle are then transported to the electron transport chain on the cristae where the reduced NADH and FADH are then oxidized. The remaining hydrogen electrons are transported down the chain where an oxygen molecule is reduced to water. Chemiosmosis also occurs at the electron transport chain, in which hydrogen protons move down the concentration gradient (from the inner mitochondrion membrane) through an ATP synthase where ATP is generated. The multiple folds inside the mitochondria which are the cristae, mean that there is plenty of surface area for cellular respirations to occur at. 
3 0
4 years ago
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What corona virus.......?
4 0
3 years ago
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After the drought of 1977, researchers hypothesized that on the Galápagos island Daphne Major, medium ground finches with large,
Sveta_85 [38]

Answer:

Option (A).

Explanation:

Evolution may be defined as the change in the characteristics of a species over several generation with time. Natural selection acts as a main drivinf force for the evolution.

The drought of 1977 is responsible for the species evolution. The species is larger in this case (as mentioned in the question) and the species has deeper beaks over time. The birds have relatively large and deep beaks because they can easily crack the food.

Thus, the correct answer is option (A).

7 0
3 years ago
Which nerve in the lumbar plexus is present in only about 10% of the population? A : accessory obturator nerve B : obturator ner
Vinvika [58]

Answer:

A : accessory obturator nerve

Explanation:

The accessory obturator nerve -found in about ten per cent of the population- is placed medial to the psoas major and anterior to the obturator nerve. It has a small size and emerges from the ventral divisions of the third and fourth lumbar nerves.

The obturator nerve is located on the ventral divisions of the second, third and fourth lumbar nerves in the lumbar plexus; the genitofemoral nerve is placed in the abdomen; the iliohypogastric nerve arises in the lumbar plexus and involves the lateral gluteal area and transverse abdominal muscles; while the ilioinguinal nerve operates from the first lumbar nerve to the iliohypogastric nerve.

5 0
4 years ago
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