BIOLOGY HIGH SCHOOL

The central nervous system (CNS) contains a number of components that perform specific functions within the body. Some functions, such as breathing, swallowing, and blood circulation, are involuntary, or done without conscious control. Which part of the CNS is responsible for these functions?cerebrum
hippocampus
cerebellum
brain stem

Answers

Answer 1
Answer: The part of the CNS that is responsible for these functions is the brain stem. 

The brain stem is the part of the brain that control very basic functions of your organism and lets them work together as they should. The other parts that are mentioned all have much more specific and also different roles. 
Answer 2
Answer:

Answer:

D. Brain Stem

Explanation:

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Cystic fibrosis is a genetic disorder. It is a recessive trait that is determined by two alleles. Suppose two parents each carry at least one recessive allele, but neither of them has cystic fibrosis. Which statement reflects the likelihood of a child of these parents having cystic fibrosis?

Answers

it is c on the review for the unit test

your welcome

have a good day

Answer:

its C, The child may or may not have the disease because a recessive gene from each parent may be passed on.

Explanation:

_____ are chemical mechanisms that start a reaction.Inhibitors

Activators

Centrioles

Vacuoles

Answers

Answer: Activators

Explanation:

Inhibitor is a substance that slows down or prevents a particular chemical reaction.

Activator is a substance that stimulates or initiates a chemical process.

Centriole is an organelle that helps in cell division, or make copies of themselves. Centrioles are only found in animal cells.

Vacuoles are strong central storage compartment in organisms.
To activate means to start, and activation energy starts the reaction, which means activators start the reaction. 

Answer: Activators

How many pairs of chromosomes does a genetically-normal human being have?A) 23
B) 36
C) 46
D) 48

Answers

A genetically-normal human being has A) 23 pairs of chromosomes, 46 in total. 

Answer:

A

Explanation:

While a home was undergoing a renovation, workers discovered that there was asbestos in the walls. Before any further work could be attempted, the family that owned the house had to evacuate, and specialists were brought in to remove the asbestos. Why would the house contain a substance that forced the family to be evacuated? Asbestos is not harmful, and the family was evacuated due to routine construction protocol.
Asbestos was once thought to be very useful, but now it is linked to lung cancer so the family was evacuated.
Asbestos is not harmful, but the family was evacuated so that the asbestos could be recycled for another building.
Asbestos was thought to be useful and is no longer used due to increasing costs to manufacture it.

Answers

B.
Asbestos was used in housing for many years because it was cheap to manufacture and was amazingly heat-resistant, but was found to be incredibly dangerous, causing innumerous accounts of lung cancer and related problems.

This is from memory, but I will double check after I answer.

Answer:

B on EDGE

Explanation:

just took the test and got in right:)

Which organisms are most likely to survive in a population in which disruptive selection is occurring? 1.Organisms that have average traits 2.Organisms that have extreme traits 3.Organisms that have the greatest number of offspring 4.Organisms that are the largest and strongest

Answers

Answer:

2.Organisms that have extreme traits

Explanation:

Disruptive selection, which is also referred to as diversifying selection, is a form of natural selection in which environmental conditions favor individuals with extreme phenotypes over individuals of intermediate phenotypes. Organisms of average traits, as a result of environmental changes, become unfit to survive as the other organisms having extreme traits

Answer:

person above me is correct

Which statement is true about a cell wall but not a cell membrane

Answers

A cell wall is in a plant cell. A cell membrane is in an animal cell.
Cell wall is in plant cells while membrane can be found in animal cells
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