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Sati [7]
3 years ago
8

Where can evidence of the struggle to survive be observed today?

Biology
1 answer:
Jlenok [28]3 years ago
3 0
The concept of the struggle for existence<span> concerns the competition or battle for resources needed to live. It can refer to human society, or to organisms in nature. The concept is ancient, and the term </span>struggle for existence<span> was in use by the end of the 18th century. From the 17th century onwards the concept was associated with a population exceeding resources.

Hope this helped!
STSN</span>
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A student observing a sample of cheek cells noticed that all of the cells were identical. Which statement below explains why the
weeeeeb [17]

Answer:

It is the 2nd one

Explanation:

For example when you grow your cells multiply or divide into more cells. So that's just in general, but it works for this two.

5 0
3 years ago
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In which structure do sperm cells develop?
horrorfan [7]

Answer:

C

Explanation:

You could literally search that up. It's correct though.

"Sperm develop in the testicles within a system of tiny tubes called the seminiferous tubules. At birth, these tubules contain simple round cells. During puberty, testosterone and other hormones cause these cells to transform into sperm cells."

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Nadph is essential for fatty acid synthesis and can be generated by which two enzymes?
sashaice [31]

The two enzymes that help in the generation of NADPH which is essential for fatty acid synthesis are the Glucose-6-phosphate-dehydrogenase(G6PDH) and the Malic enzyme.

NADPH is predominantly produced by the pentose phosphate pathway, either directly by the malic enzyme as it oxidized malate to pyruvate or indirectly through the glucose-6-phosphate dehydrogenase.

NADP+ is used to make NADPH. The pentose phosphate pathway, which is catalyzed in the first stage by glucose-6-phosphate dehydrogenase (G6PDH), is the main source of NADPH in mammals and other non-photosynthetic organisms.

From glucose, the pentose phosphate pathway also generates pentose, a crucial component of NAD(P)H.

However, the Entner-Doudoroff route is also used by some bacteria, and NADPH generation is unaffected.

Learn more about NADPH here brainly.com/question/14870384

#SPJ4

6 0
2 years ago
Which statement correctly describes a chemical reaction?
11111nata11111 [884]

Bonds between atoms break and new bonds form correctly describes a chemical reaction

<u>Explanation:</u>

The process of resetting the integral fragments of the reactants to produce diverse items as outcomes is termed as a chemical reaction. Effects transpire when pair or further particles fuse and the particles transfer. Bonds between atoms are split and designed to develop new fragments.

Chemical reactions need to be separated from physical alterations. The physical aspects of a thing will vary during physical conversion befalls, still the chemical identification will endure the equivalent. Chemical bonds are formed or split to formulate a unique molecule. Individual reactions often occur as part of a broader list of reactions.

7 0
3 years ago
Base your answer to the question on the information below and on your knowledge of biology.
vodomira [7]

Answer:

They can perform photosynthesis.

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Autotrophs are organisms that can produce their own food, and heterotrophs are organisms that feed on other organisms. This means that the ameba and paramecium can eat only other microorganisms.

The euglena is not limited to this. Hypothetically speaking, if there were no other microorganisms around it (which is unlikely), the euglena would not die as long as it is exposed to sunlight. Thanks to chloroplasts, organelles that contain chlorophyll, it can perform photosynthesis - a process in which, with the help of sunlight, carbon dioxide, minerals, and water are used to synthesize food.

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