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kaheart [24]
2 years ago
5

The brain send signals that control the speed at which food moves through the digestive system. What systems are involved?

Biology
1 answer:
nadezda [96]2 years ago
8 0
C. Muscular digestiv nervous
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Which of the following describes the ability of a single allele to influence more than one trait? a. polygenic inheritance b. mu
Anna71 [15]

Answer:

yes b

Explanation:

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2 years ago
Hi! I am confused on how to do Q2. Anyone doing A-levels can solve that questions and explain? Thanks! <3
riadik2000 [5.3K]

Answer:

i) Glucose

ii) β(1-4) glycosidic bonds.

iii) Oxygen

Explanation:

Cellulose is an important structural carbohydrate found in plants. It forms a major component of the plant cell wall.

Cellulose is a polysaccharide formed by monomers of glucose.  These glucose monomers are joined together by covalent bonds called β(1-4) glycosidic bonds, which means that the 1st carbon of one glucose is bound to the 4th carbon of the next glucose. To make this arrangement,  every other glucose molecule in cellulose is inverted, which you can see in the diagram.

Glucose monomers contain carbon, hydrogen, and oxygen only. If you look at the pattern of the molecule (remembering every second glucose is inverted), you can see that Z must be O.

The functional group denoted by Z is oxygen. The OH groups on the glucose from one cellulose chain form hydrogen bonds with oxygen atoms on the same or on another chain, holding the chains firmly together and forming very strong molecules - giving cellulose its strength.

4 0
3 years ago
AB blood type in humans as well as, red and white striped flowers are examples of this type of inheritance pattern.
Sati [7]

Answer:

The inheritance pattern is CODOMINANCE

Explanation:

Codominance is a type of non-mendelian inheritance i.e. does not follow Mendel's principles of inheritance, in which two alleles of a gene are both dominant, hence, they are both simultaneously expressed in that gene.

Examples or cases of codominance are the AB blood type in humans where alleles A and B are both expressed in the gene. Also, red and white striped flowers in certain plants is an example of codominance as red and white alleles are both expressed.

3 0
2 years ago
Use this portion of a dichotomous key for tree identification to answer the question.
LenKa [72]
<span>D) They are nonlobed, simple leaves and are attached oppositely on the branch.</span>
5 0
3 years ago
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(Hurry, l am taking my exam) In an effort to develop the best-tasting apple, a grower eliminated all trees that produced apples
Vinil7 [7]

Answer: It is <u>D. Stabalizing</u>

Explanation:

I took the test and because the apples of both ends are being eliminated while the ones in the middle are being kept and increasing.

8 0
2 years ago
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