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pantera1 [17]
3 years ago
11

In your opinion, is the nuclear membrane part of the endomembrane system? Why or why not? Defend your answer.

Biology
1 answer:
ipn [44]3 years ago
6 0

Answer:

The correct answer will be- true.

Explanation:

The endo-membrane system is the system which is formed by the group of the membranes and organelles.  These membrane and organelles are considered endomembrane as they work together to perform the inter-related functions like the packaging, modification ad transport of the lipids and the proteins.

This system comprises of the nuclear membrane also as the outer nuclear membrane is continuous with the endoplasmic reticulum (organelle) directly and helps the synthesis and modification of the proteins and lipids. other organelles are the Golgi apparatus, vesicles, lysosomes and endosomes.

Thus, option-true is the correct answer.

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In guinea pigs, the short hair trait is dominant. If two heterozygous guinea pigs were crossed, what would be the phenotypes of
Luba_88 [7]
Answer is B. Best way to check is make a square
6 0
3 years ago
I need help with my homework that is due tomorrow and I can not find the answers in the book or online.
scoray [572]

Animal regeneration can produce whole organism or parts of organism and repair injury.

Clones today are done at genetic level by using molecular biology techniques as compared to old days when only nucleus would be removed from the egg cell and desired nucleus is inserted for cloning.

Explanation:

Regeneration is a process in which whole organism or part of which is produced from pre existing cells or group of cells and tissue. Regeneration helps in maintaining the integrity of morphology and physiology.

In lower animals like hydra and planaria whole organism is generated by existing parts. This process is termed as totipotency.

In higher animals however injury repair by mitosis is an example of regeneration.

Plant structure involved in vegetative propagation are: bulbs, rhizomes and tubers.

Vegetative propagation can be done by grafting, cutting, bulb formation, tuber, layering and tissue culture methods.

Cloning is a process in which a genetical or identical copy of an organism or the cell is made by molecular biology techniques. The use of DNA sequences, molecular scissors, stem cells and plasmid are the latest techniques of cloning.

Cloning is used for treating serious diseases as diabetes and heart injury.

In old days one cell would have its nucleus removed and placed into the egg and eventually organism produced

Advantages of tissue culture:

From a single explants, large number of plants can be made.

Obtaining plants of desired trait from tissue culture is easy in short span.

No seeds are required for the growing of new plants.

5 0
3 years ago
study examines the ACTN3 genetic alleles R and X, also associated with fast-twitch muscles. Of the people in this sample, were c
Kruka [31]

Answer: Yes, the samples of R and X of α-actinin-3 (ACTN3) R577X polymorphism provided evidence that the two options are not equally likely Conduct the test using a test for a proportion, using where represents the proportion of the population classified R.  

Explanation: On one hand, from the reports of the following researcher; (North et al., 1999), (Gomez-Gallego et al., 2009; Yang et al., 2003), (Vincent et al., 2007) and (Kikuchi et al., 2014) supported that α-actinin-3 (ACTN3) R577X polymorphism is associated with muscle fibre type for power, elite performance, important for anchoring actin and plays a regulatory role in coordinating muscle fibre contractions.  

On the other hand, researchers such as Erskine et al. (2014), on 51 untrained healthy Caucasian males, Delmonico et al. (2007) studied an association between the ACTN3 genotype and training responses in a large Caucasian population of 157 relatively healthy sedentary Caucasian men and women, Gentil et al. (2011) detailed the outcomes of 141 young men, Pereira et al. (2013) reported the influence of ACTN3 polymorphisms and ACE I/D alone and in combination with muscle strength, power, and functional phenotype in older Caucasian women following 12 weeks of high-speed power training and Lima et al. (2011), conducted a study of 246 women (age 66.7 ± 5.5 years) agreed that in healthy relatively young sedentary Caucasians that both the ACE I/D and ACTN3 R577X polymorphisms (alone or in combination) were found to be associated in the baseline muscle strength, muscle strength resistance training, thickness of muscles and athletic status.  

However, the X allele, which is associated with the absence of ACTN3 protein, is suggested to impair the performance of high force/speedy muscle contractions. Using (Gentil et al., 2011) as the control experiment, the sample of 141 men performed two resistance training sessions per week for 11 weeks. The Participants were tested for 1-repetition maximum (1RM) bench press, knee extensors peak torque and knee extensors muscle thickness at baseline and after the training period. Consequently, genotype distribution was 34.4% for RR, 47% for RX, and 18.6% for the XX genotype. Drawing an inference from the to the results, the R577X polymorphism at ACTN3 was not associated with baseline muscle strength or the muscle strength response to resistance training. However, only carriers of the R allele showed increases in muscle thickness in response to training.  

Exceptions: (Clerkson et al, 2005) posited that women with RR genotype had a greater increase in muscle power than the men while in Delmonico et al (2007) disputed that claim by saying that women with XX genotype have greater relative responses than men.  

3 0
3 years ago
A secondary source might be eliminated by a good researcher because
kiruha [24]
Because good researchers rely on first hand account or better said primary evidence. The reason why they rely on primary evidence is because it is usually the most reliable. Much more so than secondary or even tertiary evidence. This enables them to understand the history of a certain topic better. 
7 0
3 years ago
Which characteristics is directly related to the coding of a single amino acid during the process of translation?
Snezhnost [94]

Answer:

the three-base sequence of mRNA

Explanation:

Translation is the process of formation of proteins. Translation process is achieved with the help of ribosome, which links amino acids in the order defined by messenger RNA (mRNA), using RNA (tRNA) transfer molecules to hold amino acids and read three nucleotides at a time of the mRNA.

The three-base sequence are present in mRNA called codons or mRNA nucleotide triplet sequences are specific to a amino acids for proper function. For exmaple:  AUG codon , specifies the amino acid methionine which acts as starts codon and initiate the process of translation.

Hence, during translation, the characteristic that represents the three base sequences of mRNA is related to the coding of single amino acid.

4 0
3 years ago
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