BIOLOGY HIGH SCHOOL

Which best characterizes the precambrian era?a.abundant plants and animalsb.dinosaursc.small, one-celled organisms and primitive jellyfishd.extensive mountain building?

Answers

Answer 1
Answer: i'd say that the answer is b.

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Which of the following is an example of a species changing over time.Choose all answers that are correct.

A.A gardener notices a new kind of squash growing after he only planted seeds from his previous squash plants.
B.A rabbit’s ears are bigger than a mouse’s ears.
C.Some weeds have become resistant to a chemical designed to kill them.
D.The purple-spotted butterflies in your collection have more spots than the purple-spotted butterflies your grandfather collected when he was a child.
E.A giraffe's neck is longer than a deer's neck

Answers

The examples of species changing over time are statements A, C, and D.

All these changes, such as new types of squash was developed in the garden. weeds evolution to resist chemicals, and the changes in butterflies wing pattern over the years is because of Mutation. Obviously, rabbit's ears are always bigger than mice and Giraffe's neck is always longer than the deer's. In genetics, mutation is the process of permanent alternation of the nucleotide sequence in DNAs.

What male reproductive structure releases sperm into the vas deferens?

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The answer is epididymis.

Testicles contain seminiferous tubules, in which sperm is produced, and an epididymis, in which sperm matures. Mature sperm passes through the epididymis to the vas deferens. There, it combines with a liquid secretion from the seminal vesicles and continues through the prostate gland to the urethra. Sperm containing fluid is called semen and it is ejected through the urethra.

A doctor is examining a child with a red, inflamed ear canal. The child is suffering some hearing loss. The ear contains a small amount of soft earwax. Which is most likely the cause of the child’s hearing loss? damage to the outer ear a disease or infection of the outer ear damage to the bones of the middle ear a disease or infection of the inner ear

Answers

Inner ear disease is more likely to cause damage. :)

Answer:

A disease or infection of the inner ear.

Explanation:

The inner ear infection or inner ear disease can be described as inflammation of inner parts or ear, which are responsible for the hearing and balance, such as swimmer's ear (also known as otitis externa).

Swimmer's ear represents an ear infection, characterized by inflammation or irritation of ear canal, swelling and pain in ear canal, moist earwax, and decreased hearing.

Thus, the correct answer is option). 'a disease or infection of the inner ear.'

Glycogen is an energy-storage molecule in humans. A hormone that is called insulin controls the storage of glycogen in the liver. Insulin is made up of amino acids.Which statement correctly identifies the types of macromolecules that are described?
Glycogen is a protein, and insulin is a lipid.
Glycogen is a protein, and insulin is a protein.
Glycogen is a carbohydrate, and insulin is a lipid.
Glycogen is a carbohydrate, and insulin is a protein.

Answers

Insulin is a protein while glycogen is a carbohydrate.

Answer:the answer is D

Explanation: I got it right

The anglerfish is a type of saltwater fish with an interesting method of catching prey. It lives deep in the oceans, where both light and food are scarce. A "light" glows on a filament right over an anglerfish's mouth. This glow is created by bacteria that live inside the fish. The bacteria are bioluminescent, which means that they produce light. When other fish see this bright glow—a rare thing in the dark waters—they come close to investigate and eventually become dinner. Anglerfish rely on _________ their food. Options: a. Cultivating b. Defending c. Attracting d. Pursuing

Answers

Answer:

C. Attracting

Explanation:

The "light" attracts prey to the anglerfish.

if an organism has five pairs of chromosomes, how many different gametes could it produce without crossing-over? explain your answer

Answers

2^5 = 32
Each chromosome has 2 options during independent assortment (maternal on the right, and paternal on the left, or the opposite) and there are 5 chromosomes.

If it is for Apex the correct answer was 16
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