BIOLOGY COLLEGE

In males, what hormone is secreted by the hypothalamus that tells the anterior pituitary to secrete the gonadotropic hormones

Answers

Answer 1
Answer:

Answer:

Gonadotropin releasing hormone

Explanation:

Gonadotropin-releasing hormone is one of the releasing hormones secreted by the hypothalamus to regulate the secretion of hormones from the anterior pituitary gland.  

At the beginning of puberty, the hypothalamus begins to increase its production of gonadotropin-releasing hormone (GnRH). The gonadotropin-releasing hormone makes the anterior pituitary to release gonadotropins in both males and females. Two gonadotropic hormones are FSH (follicle-stimulating hormone) and LH (luteinizing hormone). FSH promotes spermatogenesis in the seminiferous tubules, and LH promotes androgen production in the interstitial cells.


Related Questions

COLLEGE

) How many cells can be grown in a 5 mL culture using minimal medium before the medium exhausts the carbon?

Answers

Answer:

Explanation:

The question is not complete. Remaining part of the question is as follows - Minimal growth medium for bacteria such as E. coli includes various salts with  characteristic concentrations in the mM range and a carbon source. The carbon source is  typically glucose and it is used at 0.5% (a concentration of 0.5 g/100 mL). For nitrogen,  minimal medium contains ammonium chloride (NH4Cl) with a concentration of 0.1 g/100 mL

How many cells can be grown in a 5 mL culture using minimal medium before the medium exhausts the carbon?

Solution -

We will first find the mass concentration of 0.5 g/100 mL of solution.

gram per ml of glucose

The chemical formula of glucose is

The molecular weight of glucose molecule is grams per mole

Now, we will find the number of moles of glucose in a 5 ml medium -

mole

The number of carbon atom in each glucose molecule is equal to six, thus, number of minimal carbon mole is equal to

mole

Number of carbon atoms is equal to

Carbons

One bacteria has carbon molecule.Thus, ml medium will have bacteria

HIGH SCHOOL

Which of the following does not affect pollution levels in the Great Barrier Reef ? tourism
offshore drilling
land-based industries
overfishing

Answers

Answer: offshore drilling

Explanation:

The offshore drilling is a process of extracting the petroleum beneath the Earth's oceans. The great barrier reef is affected by the offshore drilling. The oil pollute the oceanic water.

When oil comes in contact with the corals, it can restrict their reproduction, growth and can even kill them. The whole reef ecosystem get affected by the oil extraction process, animals like fish, marine invertebrates and crabs are affected by this.

it"s offshore drilling.
HIGH SCHOOL

Select all that apply. For the photosynthesis process to occur, a plant needs _____. sunlight chlorophyll nitrogen carbon dioxide nutrients water

Answers

The answer is sunlight, chlorophyll, carbon dioxide and water.

In the photosynthesis plants use sunlight as an energy and convert it into chemical energy stored in carbohydrates. Carbon dioxide and water are used for carbohydrate synthesis. This process occurs in the chloroplasts containing chlorophyll, which is necessary for absorbing energy from sunlight. 
HIGH SCHOOL

A runner is running the 60-meter dash, which is an oxygen-deficient race. What type of energy is the runner's body using to power through the race? A. Catabolic
B. Aerobic
C. Anaerobic
D. Anabolic

Answers

Answer:

C

Explanation:

This type of cellular respiration occurs in the cytoplasm of the cell rather than the mitochondria. It is mainly powered by the glycolysis metabolic pathway that produces pyruvate as an end product of breaking down glucose. The pyruvate, if oxygen is availed to the cells, is converted to acetyl-CoA and enters the Kreb cycle in the mitochondria. However, if oxygen is unavailable (like in this case), the pyruvate is converted to lactic acid. Lactic acid if accumulated in the muscle causes muscle pulls hence needs to be broken down fast by cells and excreted.

Answer:

C. Anaerobic

Explanation:

COLLEGE

In regions where malaria is prevalent, the S allele is beneficial because:a. it prevents mosquitoes from releasing Plasmodium, the mosquito that causes malaria, into the blood. b. it improves the ability of the hemoglobin to carry oxygen. c. it causes red blood cells to distort, which makes them less hospitable to Plasmodium, the parasite that causes malaria. d. it improves the ability of the immune system to fight Plasmodium, the parasite that causes malaria.

Answers

Answer:

c. it causes red blood cells to distort which makes them less hospitable to Plasmodium, the parasite that causes malaria

Explanation:

The normal haemoglobin is a tetramer of four globin chains (2 alpha and 2 beta chains).

When a gene mutation occurs, i.e the substitution of a single nucleotide which leads to the formation of valine instead of glutamate, the hemoglobin would become sickle shaped. This gives rise to the Hb S allelle.

Therefore in malaria-endemic regions, the S allelle is beneficial because the distorted or sickle-shaped red blood cells would be less hospitable to Plasmodium and this would confer protection on the host.

HIGH SCHOOL

In which part of a flower is pollen produced

Answers

Pollen is produced in the stamen.

Stamen is the male reproductive part of a flower that produces pollen. The stamen is composed of a slender filament and a compact body called anther. The anther within the stamen is where pollen is produced. The anther is supported by the filament. Hundreds of stamens or only few stamens may be found in a flower.

Answer: Pollen is produced in the stamen.

Explanation:

HIGH SCHOOL

During an earthquake, the ground surface ____. A. Moves only in a horizontal direction

B. Moves only in a vertical direction

C. Can move in any direction

D. Does not move

Answers

The correct answer is (c) Can move in any direction.

The movement of tectonic plates that led to the shaking of surface of the earth. The energy is released in the form of seismic waves. The place from where the earthquake starts is called focus. These waves are very intense. There are two more types of waves that are responsible for the movement of ground surface. The raylegh wave makes the ground surface move up and down. They cause most of the movement of ground. The side to side movement of ground surface is controlled by love wave.





During an earthquake, the ground surface can move in any direction.

Further Explanation:

An earthquake is a phenomenon that is characterized by the sudden slip of tectonic plates one past the other. The fault plane is the surface where they slip. The hypocenter is the location beneath the earth's surface from where the earthquake starts. The epicenter is the location directly on top of the surface.

The earth has different layers :

  • Inner core
  • Outer core
  • Mantle
  • Crust

The edges of the tectonic plates are called plate boundaries.Many faults make up the plate boundaries and mainly earthquakes occur around these faults.

When the plates are moving they get stuck because the verge of the plates is uneven. Finally, when the plates have moved far enough from its edge in any direction this results in earthquake. Thus, at the time of earthquake surface of the ground can move in any direction. The intensity of an earthquake is measured by seismographs.

Learn more:

  1. Learn more about the earth science brainly.com/question/1553517
  2. Learn more about parts of earth brainly.com/question/4545456
  3. Learn more about the layer of soil brainly.com/question/138504

Answer Details:

Grade: High School

Subject: Biology

Chapter: Ecology

Keywords:

Tectonic plate, seismograph, plate boundaries, fault, earthquake, hypocenter, epicenter, crust, mantle, earth.

HIGH SCHOOL

Identify the structure of the human heart which is a valve between the right atrium and the right ventricle of the heart that directs blood that needs oxygen to the lungs

Answers

The structure being described is the tricuspid valve.The right atrium is one of the two atria of the heart which function by receiving blood entering the heart, it is located to the right of the left atrium and superior to the much larger and more muscular right ventricle. Between the right atrium and right ventricle is a one way valve known as the tricuspid valve.
HIGH SCHOOL

The human insulin gene contains a number of sequences that are removed in the processing of the mRNA transcript. In spite of the fact that bacterial cells cannot excise these sequences from mRNA transcripts, explain how a gene like this can be cloned into a bacterial cell and produce insulin.

Answers

Answer:

In order to produce human insulin in a bacterium you need to isolate the mature mRNA (after the excision of the introns), produce a DNA copy using the enzyme retrotranscriptase, clone the gene in an expression vector and transform bacterial cells with this genetic construct to produce the insulin.

Explanation:

Eukaryotic cells perform a process called splicing, in which introns (the non-coding fragments of the gene). are excised from the mRNA Prokaryotic cells (i.e. bacteria) don’t perform this process. So, in order to produce a recombinant protein in a bacterium, insulin in this case, the best strategy should be to produce a complementary DNA (cDNA) of the mature mRNA (AFTER the splicing process, the excising of the introns).

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