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Dmitrij [34]
3 years ago
13

What are the physical properties of asteroids and comets?

Biology
1 answer:
makkiz [27]3 years ago
5 0

Comets have tails asteroids don't.

Comets are made up of mostly ice.

Asteroids are made up of rock and debris.

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Professor Petrov studies the pituitary gland in her laboratory. She works closely with a colleague whose focus is on the _____,
DedPeter [7]

Answer: Hypothalamus

Explanation:

The hypothalamus, located in the fore brain is the important part of the brain that controls the secretion of the pituitary gland. It does this by stimulating the anterior pituitary gland to secrete its hormone, ACTH (Adrenocorticotropic hormone) which in turns stimulates the adrenal cortex to release corticosteriods that helps in fluid and salt balance in the body.

Thus, professor petrol's colleague is focusing on the hypothalamus.

8 0
3 years ago
Which of the following will pass through a cell membrane most easily? Multiple Choice small,
shepuryov [24]

Answer:

Non polar molecule, small

Explanation:

Cell membrane is a selectively permeable membrane.

Factors that affect permeability of a molecule are-

A. Size - Small molecules can easily pass through the membrane than the large molecules.

B. Solubility - Non polar molecules ( eg. carbon dioxide) are lipid soluble in cell membrane , so they can easily pass through the membrane than the polar molecules (eg. glucose)

4 0
3 years ago
Which statement(s) among A-D is/are not applicable to plasmids? A. They only replicate the same time as the larger chromosome. B
kondor19780726 [428]

Answer:

A) They only replicate the same time as the larger chromosome.

Explanation:

  • Plasmids are small, circular, double stranded DNA molecule, which can replicate independently from its chromosomal DNA.
  • If plasmids are used for experiments, they are called vectors.
  • Scientists use plasmids as tools for cloning, transferring and manipulating genes.
  • They are distinct from chromosomes in being non-essential.
  • Plasmids are sometimes present in archaea and eukaryotic organisms.
  • Plasmids often carry genes that benefit the survival of the organism, such as by providing antibiotic resistance.
  • They do not replicate the same time as the larger chromosome.
7 0
4 years ago
How can you tell the difference between carbohydrates and lipids?
vladimir1956 [14]
You can tell the difference because one deals with sugar and energy storage like lipids but lipids are fats or fatty acids like unsaturated and saturated fats the unsaturated fats are good for you and has the most energy source.
5 0
3 years ago
What is definition of taxonomy
malfutka [58]

taxonomy is the science of classification based on their characteristics, basically you classify things based on what they are like organisms, species, family, animal kingdom, food, fossils, plants, animals, human...etc

3 0
3 years ago
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