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Flauer [41]
3 years ago
15

What is true about cells in animals? they cannot produce food. they can produce food. some animal cells can produce food. they a

re the same as plant cells.?
Biology
1 answer:
Debora [2.8K]3 years ago
5 0
They can not produce food
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The pedigree below tracks Duchenne Muscular Dystrophy (DMD) through several generations. DMD is an X-linked recessive trait.
Goshia [24]

Answer:

- If individual III-1 marries an unaffected, non-carrier female, none of their children will have DMD

Explanation:

From the options, the only correct statements is that  <em>If individual III-1 marries an unaffected, non-carrier female, none of their children will have DMD</em>

<u>DMD is an X-linked recessive trait, meaning that a male individual is either affected or unaffected (can never be a carrier). III-1 is unaffected and if he marries an unaffected, non-carrier female, it means that none of their children will have DMD.</u>

All the children of II-4 and II-5 will always come out with DMD because both parents are affected.

Individuals I-1 and II-1 are males. A male can never be a carrier in for X-linked traits. He is either affected or unaffected and as shown by the pedigree, both males are unaffected (unshaded).

3 0
3 years ago
The _______ at the end of the electron transport system is used to create water.
NARA [144]
The splitting in of oxygen to form water. At the end of the chain, electrons are transferred to molecular oxygen,which splits in half and takes up H plus to form water.
3 0
3 years ago
Which of the following situations would result in a t-test that not likely to be accurate? Choose all that apply
Mariana [72]

Answer:

The correct options are (c) and (d).

Explanation:

The assumptions made before using a <em>t</em>-distribution for a hypothesis test are:

  1. The scale of the data should be continuous or ordinal.
  2. The sample selected should be a simple random sample.
  3. The data selected should follow a normal distribution or form a bell-shaped curve when plotted.
  4. The sample selected must be large enough so that when plotted a normal distribution curve is formed.
  5. Homogeneous variance exists so that the standard deviations of the samples are approximately equal.

A sample size of 5 a sample size of 50 sample will not be accurate for a <em>t</em>-test because on of the sample size is, 5.

This sample size is very small and when plotted will not follow a normal distribution.

The sets that differed in variance will not be accurate for a <em>t</em>-test because for using a <em>t</em>-test homogeneity of variances is assumed.

Thus, the correct options are (c) and (d).

3 0
2 years ago
Regarding biological productivity, what do you think is the best explanation for the trend in changing biomass shown in the figu
rusak2 [61]
I think the answer is D
as A would mean that the abyssopelagic organisms would be best adapted and therefore a large biomass which isn't the case and it isn't B nor C so it must be D

Hope that helps

4 0
3 years ago
Transposons are movable elements of DNA that insert into new positions within the genome. A transposon may disrupt normal gene f
Stolb23 [73]

Answer:

The answer is incomplete because it is imperative to know what is the result of the transposition (i.e., deleterious, beneficial or neutral). For example, A and C options represent study cases where the insertion of Transposable Elements (TEs) may result beneficial for the organism.

Explanation:

Transposable Elements (TE) are mobile genetic elements that have the ability to move within the genome. According to their mechanisms of insertion, TEs are classified into two major classes: Class I (or retrotransposons) and Class II (DNA transposons), which are capable of moving by copy-paste (i.e., by a RNA intermediate) and cut-paste mechanisms, respectively.  

Although originally were considered to be parasitic (deleterious) genetic mobile elements, nowadays it is well known that they may be sometimes beneficial depending on the localization of the TE insertion. For example, TE insertion into a protein-coding region (exon) sequence it is likely to produce protein disruption and thereby it has a deleterious effect. However, the insertion of TEs into upstream and intron non-coding regions may confer gene regulatory activity and be eventually beneficial to the organism.

7 0
3 years ago
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