BIOLOGY HIGH SCHOOL

Which cell structure directs the cell activities

Answers

Answer 1
Answer: The nucleus -- it is the powerhouse of the cell!
Answer 2
Answer:

Answer:

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What is algor mortis?
A child gets a severe blow to the head from an accident. Although her eyes are still fully functional, she can no longer see. Based on this information, her doctor determines that the brain area most likely damaged in the accident is the ________ lobes.
Cells that secrete protein fibers in bone are called

Cyanobacteria are important to the evolution and advancements of other life on Earth because theyA) were the first life form on earth.
B) produced oxygen from photosynthesis.
C) were the first group of organisms to leave a fossil record.
D) were thought to have become mitochondria in the cells of animals.

Answers

B is the answer for USA test Prep
B; it was produced from photosynthesis

Is cytokinesis a part of mitosis

Answers

Cytokinesis is part of M-phase, but not part of Mitosis. M-phase consists of nuclear division (mitosis) and cytoplasmic division (cytokinesis). And yes, telophase is part of mitosis, so it's in M-phase too.
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A patient comes into the clinic with a resting heart rate of 80 beats per minute (bpm). The patient's cardiac output was found to be 5.6 liters/minute with an ejection fraction (EF) of 70%. What is the patient's end-systolic volume (ESV in ml)?a) 30 ml
b)70 ml
c)80 ml
Under an electron microscope, the different sarcomere bands of striated muscle can be visualized (I-band, A-band, H-band, and Z-disk) in the relaxed state, after passive stretch, and after contraction. Which sequence of manipulations will lead to increasing A-band width?
a) passive stretch, contracted, relaxed
b)passive stretch, relaxed, contracted
c) none of the above

Answers

The correct answer for the question that is being presented above is this one: "b)70 ml." the patient's end-systolic volume (ESV in ml) is b)70 ml.

The correct answer for the question that is being presented above is this one: "a) passive stretch, contracted, relaxed." The sequence of manipulations will lead to increasing A-band width is that passive stretch, contracted, relaxed.

What do the terms...antigen
antibody
white blood cell
specific
pathogen
...mean?

Answers

Antigen: is a a foreign substance or toxin that causes a immune response.
Antibody: it is a blood protein that is produced in response to an antigen.
White blood cell: also called a leukocyte and is a cell that counteracts against antigens.
Specific: If your're talking about the biology definition then it is, of or pertaining to a species.
Pathogen: a virus or bacteria that can cause a disease.

Answer:

Antigen: is a a foreign substance or toxin that causes a immune response.

Antibody: it is a blood protein that is produced in response to an antigen.

White blood cell: also called a leukocyte and is a cell that counteracts against antigens.

Specific: If you're talking about the biology definition then it is, of or pertaining to a species.

Pathogen: a virus or bacteria that can cause a disease.

Explanation:

I took the assignment I hope this helps :)

plant and animal development share a number of features, but differ in major ways as well. which of the following best summarizes the similarities between the two forms of development?

Answers

Both plant and animal development is seeded in the perspective that a cell divides itself to form a tissue and tissues grouped will become an organ and the organism itself. The cell hierarchial model is followed in the development in both of these diverse however seemingly similar organisms. 

Status of animals 50 years ago

Answers

There are more animals in this planet 50 years ago. There are different species of animals living peacefully with ample amount of food and water which have gone extinct due to humans' negligence. They also have a better chance of survival because of what the environment offered them. Unlike now, forests no longer have enough trees to shelter these animals. Pollution is rampant which kills dozens and dozens of animals. Furthermore, animals are living at peace before.
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. Humans who live in ________ are at risk for getting malaria.a. Alaska b. Norway c. Florida d. Mexico
The bee is pollinating the flower. This is an important step in the ____________ of flowering plants. A) speciation B) regeneration C) sexual reproduction D) asexual reproduction