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guajiro [1.7K]
3 years ago
13

An experiment that does not have a positive AND a negative control is a poorly designed experiment

Biology
1 answer:
Lina20 [59]3 years ago
4 0

Answer:

true

Explanation:

you frequently need a control which shows the experiments to stay the same. controls are very important.

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Describe the characteristics of fungi.
Ksju [112]

Answer:

Characteristics of Fungi

Fungi are eukaryotic, non-vascular, non-motile and heterotrophic organisms.

They may be unicellular or filamentous.

They reproduce by means of spores.

Fungi exhibit the phenomenon of alternation of generation.

Fungi lack chlorophyll and hence cannot perform photosynthesis.

6 0
3 years ago
Studies of autonomic nerve regeneration have demonstrated that Group of answer choices preganglionic fibers show a strong prefer
Katena32 [7]

Answer:

only sympathetic fibers can regenerate accurately

Explanation:

Neuroregeneration is a complex biological process associated with the regrowth and/or repair of nervous tissues. This process depends on the type of nerve tissue and how seriously the nerve was injured. The autonomic nervous system, also known as the autonomic nervous system (ANS), is part of the peripheral nervous system (PNS) that is responsible for regulating involuntary physiological processes. The PNS contains two basic divisions: sympathetic and parasympathetic. The sympathetic fibers innervate tissues in nearly all the organ systems and they are responsible for regulating homeostatic processes (e.g., heart rate). The sympathetic nervous system is formed by nerves from the thoracic and lumbar segments of the spinal cord. These autonomic nerves can regenerate after injury in order to reinnervate target tissues (e.g., after chronic cardiac ischemia).

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3 years ago
What property of water best helps aquatic life survive in lakes during the winter?
miss Akunina [59]

Water is less dense as a solid than as a liquid the answer is D


3 0
3 years ago
Deoxyribose Glucose Guanine Phosphate Ribose
Sergeu [11.5K]
There is no attached table, so it could not be told precisely which of the four molecules is the DNA. But, it is known that DNA consists of deoxyribose, guanine, and phosphate. 
The base unit of DNA is called a nucleotide. The nucleotide consists of a nucleobase (adenine - A, thymine - T, cytosine - C, and <u>guanine -G</u>), a monosaccharide <u>deoxyribose</u>, and a <u>phosphate </u>group. <span>By knowing this, it is easy to choose which molecule of those is the DNA.</span>
3 0
4 years ago
A pine tree is a _____. A. bryophyte. B. gymnosperm. C. angiosperm
Assoli18 [71]
The correct answer for the given statement above would be option B. A pine tree is a gymnosperm. A gymnosperm is a kind of plant that has its seeds enclosed by a fruit or ovary. This kind of plant does not have bright flowers or seeds that are protected in a fruit. 
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3 years ago
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