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Tresset [83]
2 years ago
10

You have just discovered an organism that lives in extremely cold environments. Which of the following would you predict to be t

rue about the phospholipids in its membranes, compared to phospholipids in the membranes of organisms that live in warmer environments?
Biology
1 answer:
xxMikexx [17]2 years ago
5 0

Answer:

The membrane phospholipids of cold-adapted organisms will have a higher proportion of unsaturated fatty acid tails.

Explanation:

The phospholipid tails present in the membranes may or may not have double bonds. The phospholipid tails with no double bonds are able to pack tightly which in turn makes the membrane more rigid. The fatty acid tails with one or more double bonds have kinks that do not allow them to pack tightly. Since membranes become more rigid at lower temperatures, the organisms adapted to cold conditions have more of the phospholipids with unsaturated fatty acid tails in their membranes

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Which of the following options lists the stages in cellular respiration in the correct order? glycolysis, the citric acid cycle,
marishachu [46]

Answer:

The correct answer is  glycolysis, the citric acid cycle, and oxidative phosphorylation

Explanation:

Aerobic respiration contains three major processes that are glycolysis, the citric acid cycle, and oxidative phosphorylation.  

In glycolysis, partial oxidation of one mole of glucose gives two moles of pyruvate and 2 NADH and 2 ATP. Then this pyruvate is converted into acetyl-CoA in the mitochondrial matrix(in eukaryotes) and acts as a fuel for the Krebs cycle.

In the Krebs cycle, acetyl CoA gives rise to 4 CO₂, 2 ATP, 6 NADH, and 2 FADH₂. So from glycolysis and Krebs cycle, only 4 ATP is produced and most of the energy remains in the form of NADH and FADH₂.

So in oxidative phosphorylation electrons are released from these molecules into machinery of oxidative phosphorylation to synthesize ATP.

3 0
3 years ago
Cells get energy from minerals like sodium and potassium true or false
yuradex [85]

Answer:

cells can get energy from minerals

Explanation:

True

7 0
3 years ago
The dna content for an organism is analyzed. The results showed that 21% of the nucleotides contained the nitrogenous base adeni
Serjik [45]

If the results show that 21% of the nucleotides contain adenine, then the cytosine fraction in vivo is 29% and the thymine fraction is also 21% (options A and C).

<h3>Define double helix model of DNA?</h3>
  1. DNA is a double helix molecule made up of two long strands of nucleotides.
  2. There are four types of nucleotides in DNA, each containing a different nitrogenous base: adenine, guanine, thymine, cytosine.
  3. Adenine always pairs with thymine and guanine pairs with cytosine, according to the base-pairing rules.
  4. As a result, the percentage of adenine equals the percentage of thymine, and the remaining percentage equals guanine + cytosine (29 + 29 = 58 >> 58 + 21 + 21 = 100).
  5. Therefore, if the results show that 21% of the nucleotides contain adenine, then the percentage of cytosine in vivo is 29% and the percentage of thymine is also 21%

To know more about double helix model of DNA, visit:

brainly.com/question/3789581

#SPJ4

The complete question is as follows:

The DNA content for an organism is analyzed. The results showed that 21% of the nucleotides contained the nitrogenous base adenine. What else can be inferred based on this data? Select all that apply

A) The percentage of cytosine is 29%.

B) The percentage of adenine is 21% for all organisms.

C) The percentage of thymine in the organism is also 21%.

D) The percentage of guanine in the organism is also 21%.

E) The percentage for cytosine in the organism is also 21%.

4 0
9 months ago
How do the process of DNA replication and the laws of inheritance help cells and individuals pass on their
Lapatulllka [165]

Answer/Explanation:

DNA replication doubles each chromosome, meaning the cell can pass on DNA to daughter cells - the duplicated DNA is divided equally between the two new cells formed from the parent.

The laws of inheritance are:

1) The Law of Dominance: An organism with alternate forms of a gene, called alleles, will always display the form that is dominant, masking the recessive trait.

2) The Law of Segregation: In a diploid genome, like most eukaryotes, each trait is defined by a pair of genes (alleles). Each allele is randomly passed on to the gametes so that each gamete only contains one allele.   The offspring inherits one allele from each parent during the process of fertilization.

2) The Law of Independent Assortment: Genes for different traits are sorted independently from one another That is, the inheritance of one trait does not depend on the inheritance of another trait. so that the inheritance of one trait is not dependent on the inheritance of another.

8 0
3 years ago
Inheritance patterns cannot always be explained by Mendel's models of inheritance. If a pair of homologous chromosomes fails to
soldier1979 [14.2K]

The question is incomplete as it does not have the options which are:

A) n+1; n+1; n-1; n-1

B) n+1; n-1; n; n

C) n+1; n-1; n-1; n-1

D) n+1; n+1; n; n

Answer:

Option-1

Explanation:

The laws of inheritance were concluded from the result of Mendel's experiment which is based on the fact that gametes are formed. Later research suggested that gametes are formed by the process of meiosis which takes place in two phases and recombination is a characteristic of Meiosis.

If during anaphase I of meiosis I, the alleles fails to separate that is nondisjunction takes place at anaphase I, Then the resulting daughter cells will have unequal distribution of chromosomes.

One daughter cell will receive 1 extra copy of the chromosome while another daughter cell will receive 1 less chromosome therefore ploidy level will be n+1 and n-1.

During meiosis II, 2 more daughter cells will be formed with the same ploidy level therefore in last the meiosis will result in 2 (n+1) and 2 (n-1) cell.

Thus, Option-1 is the correct answer.

4 0
3 years ago
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