answers

watching

views

3 Sep 2018

What makes a skin cell different from a brain cell?

A) Skin cells are haploid, and brain cells are diploid.

B) The skin cell expresses different genes compared to the brain cell.

C) The skin cell is missing brain-specific genes.

D) There are brain specific chromosomes that are missing in the skin cell.

E) Skin cell chromosomes undergo crossing over to shut off brain genes.

answers

watching

522

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

devsingh077Lv10

22 Aug 2023

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

knowseverything844Lv10

22 Aug 2023

Already have an account? Log in

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

bingoLv10

22 Aug 2023

Already have an account? Log in

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Patrina SchowalterLv2

6 Sep 2018

Already have an account? Log in

Related questions

Functional Magnetic Resonance Imaging is a tool that has been very useful in identifying what parts of the brain do what. Scientists can have a person perform some particular activity and then look for active areas in the brain. How does fMRI work?

	A.	It takes a picture of the inside of the brain according to electricity levels. The more electrical current in the area, the more active it is.
	B.	It takes a picture of the inside of the brain according to blood flow. More blood flow indicates more activity in that area.
	C.	It takes images of thin layers of the brain and the more electrical activity in a layer, the more magnetic it is and this shows up in fMRI.
	D.	Electrodes attached to the skull can trigger activity in particular brain areas which then trigger a person to perform certain behaviors.
	E.	It takes a picture of the brain according to oxygen levels. More oxygen in an area indicates more activity in that area.

The strategy of vaccination to fight diseases uses what type of immunity?

	A.	Non-specific immunity
	B.	Cell-mediated immunity
	C.	Natural immunity
	D.	Specific immunity
	E.	Passive immunity

If you came into contact with Vibrio, what defense do you have to keep it from even getting to your intestines?

	A.	Your skin is an effective barrier against bacteria you come in contact with.
	B.	Antimicrobial enzymes in saliva
	C.	Acid in the stomach
	D.	Mucous membranes in the digestive and respiratory tract
	E.	All of the above

What do B cells do when they identify a pathogen?

	A.	Engulf and eat it
	B.	Kill it
	C.	Produce antigens to bind to the pathogen and memory cells to guard against future infection.
	D.	Produce antibodies to bind to the pathogen and memory cells to guard against future infection.
	E.	Engage helper T cells to fight the infection

There are chemical signals that call on non-infected cells to help fight a virus. Which are they?

	A.	Complement proteins
	B.	Macrophages
	C.	B cells
	D.	Interferons
	E.	Natural killer cells

When someone gets a bone marrow transplant, they have to be quarantined and carefully protected from pathogens for a period of time afterward. Why?

	A.	Bone marrow produces the main cells involved in the specific immune response, so these patients are at special risk of infection until they build up enough marrow to produce sufficient cells.
	B.	Bone marrow produces blood cells, so they have insufficient circulation for a period of time so their immune system lacks the energy to fight off any infection.
	C.	Anytime a foreign substance, even someone else's bone marrow, is introduced to a body, there is an extra risk of infection.
	D.	A common complication of bone marrow transplants is infection, and doctor's don't want the infection to spread to others.
	E.	It's a traumatic procedure, and any extra stress on their body could kill them.

Determine whether the following applies to mitosis, meiosis, orboth; also identify the specific stage of cell division thatapplies (e.g. mitosis prophase, meiosis anaphase II, etc)

1) chromosomes pairs line up across the center of the cell

2) sister chromatids seperate

3) spindle fibers separate homologous chromosomes

4) 4 haploid daughter cells are produced

5) a cell 1st undergoes DNA replication

6) chromosomes line up single file across the middle of thecell

7) sister chromatids separate from each other

8) 2 haploid daughter cells form

9) the nuclear membrane re forms

10) spindle fibers attach to pairs of homologous chromosomes

11) the nuclear membrane begins to dissolve

12) centrosomes duplicate

13) synapsis and crossing over occurs

14) 2 diploid daughter cells form

turquoiseporpoise808

1) Which of the following is an example of a psychological adaptation?
A) Preferring sugary and fattening foods.
B) The ability to form calluses due to friction on the skin.
C) Threatening a potential rival for a mate.
D) Both A and C.
E) Both B and C.

2) A person has undergone the "split-brain" procedure to treat a clinical disorder. After her left nostril is plugged with cotton, the scent of a flower is directed to her right nostril. We would expect this odor to
A) be perceived in the left hemisphere of her brain.
B) be perceived in both hemispheres of this personâs brain.
C) lead that person to report the smell of a flower.
D) fail to generate a verbal report of the sensory experience.
E) Both B and C are correct.

3) Lateral inhibition
A) Decreases firing in nearby neurons
B) Increases with more excitatory input.
C) Enhances perception of edges.
D) Are encoded by bipolar cells.
E) All of the above.