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Snezhnost [94]
3 years ago
14

Specific molecule that an enzyme fits

Biology
1 answer:
qwelly [4]3 years ago
8 0
Substrate

The enzyme grabs on to the substrate at a special area called the active site. The combination is called the enzyme/substrate complex. Enzymes are very, very specific and don't just grab on to any molecule. The active site is a specially shaped area of the enzyme that fits around the substrate.
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Identify the statement that describes the imperfection of natural selection. Identify the statement that describes the imperfect
kirill115 [55]

Answer:

Variability was seen as imperfection, so natural selection could only eliminate the inferior and imperfect, not giving rise to new things, new species.

:

5 0
3 years ago
What is a Punnett Square?:
Elena L [17]

Answer:

A: A tool for showing possible alleles of offspring in a test cross

Explanation:

Punnet squares use the alleles of the parents to find possible alleles of their offspring.

6 0
2 years ago
Complete the passage to describe the link between photosynthesis and respiration.
Butoxors [25]

Answer:

Explanation:

The reactants for cellular respiration are the products of photosynthesis. The products of cellular respiration are the reactants in photosynthesis.

  • During photosynthesis, green plants manufacture their food using sunlight to synthesize glucose from water and carbon dioxide.
  • The other product of the process is oxygen gas.
  • During cellular respiration, the glucose is combined with oxygen to produce energy, carbon dioxide and water.
4 0
2 years ago
The following F2 results occur from a dihybrid cross (AaBb x AaBb): purple: A_B_ 9/16 white: aaB_ 3/16 white: A_bb 3/16 white: a
e-lub [12.9K]

Answer:

b. 3 (whilte) : 1(purple)

Explanation:

The first dihybrid crossing is between AaBb x AaBb

Now, if the double heterozygous traits self crossed, we have the following gametes shown below for the F₂ crossing.

AaBb = (AB, Ab, aB, ab)

                    AB                     Ab                     aB                     ab

AB                AABB                AABb                AaBB                AaBb

Ab                AABb                AAbb                AaBb                Aabb

aB                AaBB                 AaBb                aaBB                aaBb

ab                AaBb                 Aabb                 aaBb                aabb

We were being told that the results are;

purple: A_B_ 9/16

white: aaB_ 3/16

white: A_bb 3/16

white: aabb 1/16

From above, we can see that the same is true;

For Purple color; we Have (AABB and AaBb) since A is dominant to a and B is dominant to b.

∴ From the above punnet square; we have 9 purple colors which are:

(AABB, AABb, AaBB, AaBb, AABb, AaBb, AaBB, AaBb, AaBb) = 9/16

white: aaB_ ( since B is dominant to b, it can be either BB or Bb)

= (aaBB, aaBb, aaBb) = 3/16

white: A_bb ( since A is dominant to a, it can be either AA or Aa)

= (AAbb, Aabb, Aabb) = 3/16

white: aabb i.e homozygous recessive = (aabb) = 1/16

Furthermore, the question goes further by saying:

If a double heterozygote (AaBb) is crossed with a fully recessive organism (aabb), what phenotypic ratio is expected in the offspring?

If AaBb self crossed, we have:  (AB, Ab, aB, ab)

If aabb self crossed, we have: (ab, ab, ab, ab)

                    AB                     Ab                     aB                     ab

ab                AaBb                Aabb                aaBb                 aabb

ab                AaBb                Aabb                aaBb                 aabb

ab                AaBb                 Aabb               aaBb                 aabb

ab                AaBb                 Aabb                aaBb                aabb

AaBb ( purple)

= 4/16

= 1/4

= 0.25

= 25%

Aabb (white)

= 4/16

= 1/4

= 0.25

= 25%

aaBb (white)

= 4/16

= 1/4

= 0.25

= 25%

aabb (white)

= 4/16

= 1/4

= 0.25

= 25%

Now the proportion of white to purple =  (25%+25%+25%): 25%

=  75%:25%

= 3(white):1(purple)

We can therefore conclude that the expected phenotypic ratio in the cross between a double heterozygote (AaBb) with a fully recessive organism (aabb) yeids;

3 (whilte) : 1(purple)

8 0
3 years ago
A client with the diagnosis of obsessive-compulsive disorder attends a day treatment program. the client feels that her hands ar
mina [271]

The immediate intervention for this client is to let her limit the number she washes her hands a number of times. The advice is not to illuminate but reduce so that the client still cope with the feeling of anxiety while aiming why handwashing is not necessary. Also there is a need of washing the hands for instance after toileting.  

5 0
3 years ago
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