BIOLOGY HIGH SCHOOL

The endosymbiotic theory helps to explain the origin of which structures?

Answers

Answer 1
Answer: The Mitochrondria of the eukaryotic cells.
Answer 2
Answer:

Answer:

A Mitochondria i just took the test on edge  

Explanation:

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Are fish egg cells prokaryotic or eukaryotic?

Answers

Fish egg cells are prokaryotic. An egg cell is a single cell.

The Great Pacific Garbage Patch will be difficult to physically clean up because _______.

Answers

Answer:

The Great Pacific Garbage Patch is an environmental problem of the Pacific ocean water. It is accumulated with a trash of 10 meters deep non-degradable plastics. These plastic wastes can trap marine animals and contaminate the quality of water.

The Great Pacific Garbage Patch will be difficult to physical clean up because it actually lies in the international water, and no single nation is responsible for it's creation, also the filtering out of the plastic will effect the marine animals and diversity of marine phtoplanktons and zooplanktons.

Because it lies in international waters, no single nation is responsible for its creation, and filtering out all the plastic will also remove plankton.

Therefore, all of the above

How is the blood in the pulmonary artery different from the blood in other arteries?

Answers

The blood in the pulmonary artery is deoxygenated whilst other arteries have oxygenated blood.

Which period of prenatal development is characterized by increased cellular differentiation? Select one:a. Embryonic period
b. Fetal period
c. Preimplantation period
d. Unattached conceptus?

Answers

Answer;

Embryonic period

Explanation;

The germinal stage is the period of gestation from fertilization or conception, when the egg meets the sperm, to implantation of the embryo in the uterus. The embryonic stage of gestation is the period after implantation, during which all of the major organs and structures within the growing mammal are formed.

-Embryonic period begins at fertilization (penetration of the egg by the sperm) and continues until the end of the 10th week of gestation (8th week by embryonic age). The period of two weeks from fertilization is also referred to as the germinal stage.

What occurs when the sperm fuses with the egg?

Answers

you began to crate a baby due to the firtelizes from male and women

1. A flexible, supporting structure found only in chordates is the A. nerve net
B. notochord
C. pharyngeal slits
D. dorsal fin.

2. Ancient chordates are thought to be most closely related to which of the following species?
A. spiders
B. earthworms
C. octopi
D. sea stars

Answers

A flexible, supporting structure found only in chordates is the notochord. The correct option among all the options that are given in the question is the second option or option "B".

Ancient chordates are thought to be most closely related to sea stars. The correct option among all the options that are given in the question is the last option or option "D".

The notochord is a flexible, supporting structure found only in chordates. Ancient chordates are most closely related to octopi.

The correct answer for the first question is B. notochord. The notochord is a flexible, supporting structure found only in chordates.

It provides support to the body and serves as a precursor to the vertebral column in vertebrates. Examples of chordates include fish, birds, and mammals.

The correct answer for the second question is C. octopi. Ancient chordates are thought to be most closely related to cephalopods like octopi.

Both groups share certain characteristics in their body structure and development.

Learn more about chordates here:

brainly.com/question/33451364

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