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IrinaVladis [17]
3 years ago
5

Proteins are used for many structural functions such as in the actin and myosin in muscle or as a part of the cytoskeleton scaff

olding that maintains cell shape. What other main function do proteins serve?
A.
as enzymes to control the rate of reactions and regulate cellular activity
B.
as waterproof membranes to regulate the transport of molecules in and out of the cell
C.
as coding for genotypic expression and phenotypic traits
D.
as cellulose to form the major structural component of plant cell walls
Biology
2 answers:
Nitella [24]3 years ago
5 0

Answer:

A

Explanation:

Proteins are large biomolecules produced in living cells. They are polymers made up of monomeric units called amino acids. Asides being structural components as highlighted in the question, complex proteins produced in living cells also serves as biological catalysts that regulates biochemical reactions in the body of living organisms. The protein that perform this function of regulating reactions is called ENZYME.

Catalytic enzymes affects the rate of biochemical reactions, without them, reactions will occur slowly or not at all. Enzymes, which can be anabolic or catabolic depending on whether they catalyze building up or breaking down of complex molecules respectively, are usually specific about what (substrates) they act on.

The amino acids that make up specific enzymes are modified into a three-dimensional shape. This shape determines its function and confers upon it the ability to speed up a reaction. An enzyme gets its name from the type of reaction they catalyze e.g. cellulose synthase catalyzes the synthesis of cellulose from glucose.

polet [3.4K]3 years ago
4 0

Answer: (A) as enzymes to control the rate of reactions and regulate cellular activity.

Explanation: Proteins - control rate of reactions and regulate cell processes, form important <u>cellular structures and transport substances into/out of cells or fight disease.</u>

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What would most likely happen to a person who is not getting enough essential animosity acids in his or her diet
Alja [10]

Probably nothing. There are a lot of vegetarians in California and Australia and Oceania and Asia (mostly Japan and India).

6 0
4 years ago
When studying animal behavior, the distribution of organisms within a choice chamber can be studied to identify animal preferenc
Komok [63]

Answer:

c

Explanation:

Random distribution of the Isopods should be 50/50 in A and B.

Chi-square = \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency

Chamber         O                    E             Chi-square

  A                   18                   10             \frac{(18 - 10)^2}{10} = 6.4

  B                    2                    10             \frac{(2 - 10)^2}{10} = 6.4

<em>Total Chi-square </em>= 6.4 + 6.4 = 12.8

<em>Degree of freedom</em> = 2 - 1 = 1

<em>Tabulated Chi-square</em> (α = 0.05) = 3.8415

The calculated Chi-square exceeds the critical value, hence, it is significant and not due to random.

<em>The correct option is </em><em>c</em><em>.</em>

4 0
3 years ago
Identifying Similarities among Protists
9966 [12]

Answer:

heterotrophic

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Explanation:

3 0
4 years ago
A gene that affects hair length in dogs has two alleles. The allele for short hair (L) is dominant
Lelechka [254]

Answer:

This question lacks options, the options are:

A. Only recessive alleles are inherited from homozygous parents.

B. Dominant alleles grow weaker as they are passed from parents to offspring.

C. Only the parent with a dominant allele can pass that allele to offspring in sexual reproduction.

D. A heterozygous parent has an equal chance of passing either the dominant allele or the recessive allele to offspring.

The answer is D

Explanation:

This question involves a single gene coding for hair length in dogs. The allele for short hair (S) is dominant over the allele for long hair (s). This means that allele 'S' will always mask the phenotypic expression of allele 's' in a heterozygous state.

According to the question, two heterozygous dogs (Ss) were crossed to produce 6 shortt-haired offsprings and 2 long-haired offsprings. An heterozygous organism is that which contains two different alleles for a particular gene i.e. a combination of dominant and recessive alleles.

Based on this, during meiosis or gamete formation, an heterozygous dog (Ss) will produce gametes with the short hair allele (S) and long hair allele (s) in equal proportion i.e. 50-50. When the two gametes containing the recessive alleles (s) produced by each heterozygous parent fuses, an offspring with a recessive phenotype (long hair, ss) is produced.

Hence, a long-hair

phenotype can appear in the offspring of two short-haired dogs because a heterozygous parent has equal chance of passing either the dominant or recessive allele to the offspring.

6 0
4 years ago
Mendel wanted to find out if the pattern of inheritance for one trait affected the pattern of inheritance for another.what exper
balu736 [363]
He used  Pea plants to help him find the laws of inheritance. He crossed homozygous (AA) tall plants with short (aa) plants and found that all of the off spring were tall, due to the fact that tall is dominant and short is recessive. He then conducted another experiment where all the offspring mated (all offspring were heterozygous (Aa)) And produced the F1 generation and 25 percent of the plants were short (use a punnet square to see why) and 75 percent were tall. 

I hope this response helped :) If u have anymore q about mendelian genetics pls lmk !
4 0
4 years ago
Read 2 more answers
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