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3 years ago

Which explains how the Calvin cycle and the Krebs cycle differ?

1 answer:

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The Krebs cycle is the complete BREAKDOWN of glucose and takes place during cell respiration in both plants and animals.

The Calvin cycle FORMS sugar and takes place during photosynthesis in the Stroma of plant cells.

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Two hormones are closely involved in the regulation of the fluid and electrolyte balance of the body. Name them and explain thei

Novosadov [1.4K]

Answer: Anti-diuretic hormone also known as vasopressin and Aldosterone

Explanation:

They both act on the kidneys to exert their effect.

Anti-diuretic hormone acts on the kidney to regulate Urine volume, thus causing the kidney to reabsorb water from the urine.

Aldosterone acts on the kidneys to increase sodium retention. Increased sodium retention leads to increased water retention.

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3 years ago

Why is MgATP2− , instead of ATP4− , a substrate for the hexokinase reaction? Select two correct phrases. Mg2+ prevents ATP hydro

lidiya [134]

Answer:

Mg is able to give off two of its electrons to other molecule, not four. ATP, in this case is the aceptor of those electrons

Two correct answers are:

1) Hexokinase cannot bind active ATP when it is not complexed with Mg2+

2) Mg2+ makes the terminal phosphorus atom of ATP more accessible to nucleophilic attack by a glucose-OH group

Explanation:

As Mg occurs naturally as ion Mg++, it is able to give off only two of its electrons to other molecule, then it is possible for ATP to receive two electrons of Mg, forming MgATP2-

The hexokinase reaction, here cited, corresponds to the glucose phosphorylation of its sixth carbon to produce glucose-6-P, which is a glycolysis intermediate. In this way glucose is activated (ATP is initially invested to energize glucose). Later on, Glyceraldehide-3-P is produced, and finally converted to pyruvate, NADH2 and ATP

3 0

3 years ago

Discuss your opinions and attitude towards biodiversity and the health of ecosystems. Is biodiversity something that your person

ss7ja [257]

Biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services. Recreation—many recreational pursuits rely on our unique biodiversity , such as birdwatching, hiking, camping and fishing.

Yes, biodiversity is something that I personally value and everyone should.

Biodiversity supports human and societal needs, including food and nutrition security, energy, development of medicines and pharmaceuticals and freshwater, which together underpin good health. It also supports economic opportunities, and leisure activities that contribute to overall wellbeing.

Yes, I wish that more people thought like this.

5 0

3 years ago

Suppose a male organism has a diploid chromosome number of 6. These chromosomes could be represented as A,a, B, b, C, and c wher

KatRina [158]

Answer:

A. The haploid set of n is ABC

B. ABC, ABc, AbC, aBC, abc, abC, aBc, Abc.

Explanation:

A diploid cell is a cell that comprises of two complete sets of chromosomes. This is double the haploid chromosome number. Each pair of chromosomes in a diploid cell is noted to be a homologous chromosome set. A homologous chromosome pair consists of one chromosome donated from one parent and one from the other parent. This number is represented as 2n. It varies in different organisms. A diploid cell replicates via mitosis. It preserves its diploid chromosome number by making an identical copy of its chromosomes and distributing its DNA in an equal manner between two daughter cells.

Haploid refers to a cell that contains a single set of chromosomes. Gametes are made up of half the chromosomes contained in normal diploid cells of the body, these are also known as somatic cells. Haploid gametes are produced during meiosis. Meiosis is a type of cell division that reduces the number of chromosomes in a parent diploid cell by half.

Therefore,

Karyotype of this organism is designated as AaBbCc.

AaBbCc is the diploid set (2n).

Hence ABC or abc are the haploid set (n).

B. The eight different combinations of these chromosomes that could possibly be produced by spermatogenesis in this male are:

ABC, ABc, AbC, aBC, abc, abC, aBc, Abc.

7 0

3 years ago

In the United States Federal Government, "Congress" is made up of ____ and ____.

AleksandrR [38]

Answer:

The United States Congress is made up of the House of Representatives and the Senate.

Explanation:

6 0

3 years ago