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3 years ago

PLEASE explain how negative feedback helps the body maintain homeostasis

1 answer:

7 0

This response helps decrease body temperature. Another example of negative feedback has to do with blood glucose levels. ... If a raise in body temperature (stimulus) is detected (receptor), a signal will cause the brain to maintain homeostasis (response).

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what is most likely the amount of energy available at a trophic level of primary consumers if the amount of energy available to

Natali [406]

Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.

8 0

3 years ago

Read 2 more answers

Mendelian inheritance states that traits are determined when offspring receive for each trait from . Traits can be , which means

vovangra [49]

Answers:

Mendelian inheritance states that traits are determined when offspring receive alleles for each trait from Parents.

Explanation:

As per Mendel, all the traits which are present in an offspring are determined by specific genes which exist in alternate forms called alleles. For example: The height of a plant is a trait which is determined by alleles T for tall height and t for small height of same gene. The organisms acquire these alleles from parents (one allele from each parent).

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Traits can be Dominant which means they can be seen and are capable of masking a different trait.

Explanation:

Dominant trait means when only a single dominant allele for the trait in an organism is enough for the organism to depict the trait. For example: In pea plant, purple flower color is a dominant trait over white. So any plant who contains only one dominant allele for purple (allele P) will have purple flowers but all plants that have two pp alleles will have recessive trait i.e White flowers.

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Traits can also be Recessive which means they can be masked.

As mentioned in above example, white flower color of pea plant is a recessive trait. Recessive means that if a plant has one copy of recessive and one copy of dominant allele, the dominant allele will suppress or mask the effect of dominant allele. Example is the above case of flower color when a plant with genotype Pp will have purple but not white flowers.

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Alleles are different versions of the same gene in an organism.

Alleles are just alternate forms of a gene. For example if a plant height is determined by a gene L, it has two forms capital L and small l which are alleles of same gene. But capital L is for tall height and small l is for short height.

Hope it help!

3 0

3 years ago

Read 2 more answers

Approximately how many bytes are in a kilobyte (kb)?

Aliun [14]

Hey there,
To be exact, 1,048,576 Kilobytes

Hope this helps :))

~Top

3 0

3 years ago

In the homeostasis lab we are using ____________________ as a homeostatic parameter.

11111nata11111 [884]

Answer:

Body temperature

Explanation:

Homeostasis is the a resistance to change due to the body's attempt to maintain constant and stable internal environment. To maintain the body's overall functioning it is very important that homeostasis is maintained at all levels.

Body temperature can be used as homeostasis parameter in the lab. It is important that that the body tries to maintain a constant temperature.

3 0

3 years ago

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers;

gogolik [260]

Answer:

187.5 or rounded off to 188 white, terminal flowers

Explanation:

Let red=R and white=r where R>r; axial=A and terminal=a where A>a

The parents are true-breeding which means that they are homozygous.

P: RRAA x rraa

F1: RrAa

We then cross two plants from the F1 generation

RrAa x RrAa

To find out the probability we look at the different traits individually

Rr x Rr

yielding 1/4 RR (red), 1/2 Rr (red), 1/4 rr (white)

Aa x Aa

yielding 1/4 AA (axial), 1/2 Aa (axial), 1/4 aa (terminal).

We determine which F2 genotypes would allow for red, terminal flowers.

RRaa and Rraa

Then we use the multiplication rule to determine the probability of these occurring

RRaa: 1/4 x 1/4 = 1/16

Rraa: 1/2 x 1/4 = 1/8

Next we use the addition rule

1/16 + 1/8 = 3/16

To find out the number of these plants within the 1000 F2 plants we multiply the probability with 1000

3/16 x 1000= 187.5 red, terminal flowers

8 0

3 years ago