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Andrew [12]
3 years ago
14

Which statement discusses the gland(s) and hormone(s) that are most involved in regulating a fight-or-flight response? The pancr

eas produces insulin. The adrenal glands produce epinephrine. The ovaries produce estrogens. The parathyroids produce parathyroid hormone.
Biology
1 answer:
BARSIC [14]3 years ago
3 0
The adrenal glands produce epinephrine
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Is selection more effective against recessive alleles in haploid or diploid organisms?
svet-max [94.6K]
The selection of more effective which is against recessive alleles in haploid organisms than diploid organisms. This is because haploid organisms contain a single set of alleles if a deleterious allele is present in haploid organisms which will produce its effect immediately as there will be no dominant allele which can prevent the expression of the recessive allele as it happens in diploids. Recessive allele will not produce its effect in presence of the dominant allele in the case of heterozygote which is Aa.
Where there is haploid the selection will be more effective when removing recessive alleles in the population. It is the homozygous recessive condition which as aa then the selection will act against recessive alleles.
3 0
3 years ago
many prople try to eliminate fat from their diets. which is one reasom it is necessary for humans to eat fat​
Ira Lisetskai [31]

Explanation:

Fats are very important classes of food needed by the body. Excess fat is not good for the body.

The following are the reasons fats are essential for the body;

  • They provide energy for the body too.
  • Fats are good insulators helping to keep the body warm.
  • They help the body absorb vitamins because some vitamins are only soluble in fats.
  • They help in growing of the cell.

learn more:

Food brainly.com/question/8790597

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6 0
3 years ago
Which processes are involved in the chloroplast of a plant cell?
Ahat [919]

Answer:

Chloroplast absorbs sunlight and it is used to make feed for the plant together with water and carbon dioxide gas. Chloroplasts are used to generate the free energy stored in ATP and NADPH via a photosynthesis process.

Explanation:

The site of photosynthesis action is chloroplast within a plant cell consisting of two chlorophyll molecules (PS1 and PS2), which have been embedded in the thylakoid membranes. The chloroplast consists of two chlorophyll molecules (photosynthetic pigments responsible for the green color of chloroplast). Each chlorophyll molecule absorbs light, caused to depart the chlorophyll molecules. This absorbs two electrons from each phenotype. PS2 electrons pass through the transportation chain for electron carriers, a series of redox reactions that release the energy used to synthesize ATP via Photophosphorylation/Chemiosmose (as the H+ ions diffuse through the stalked particles ATP, which changes the shape and catalysts, the electrochemical gradient diffuses down through the stalky particle ATP synthase).

Then these electrons replace the electrons lost in PS1. PS2 electron is replaced by photolysis electron, which when light strikes chloroplast, splitting the water into oxygen gas, H+ ions, and electron enzymes in the thylakoid space are catalyzed. The PS1 electrons combine to create NADPH with H+ ions and NADP (reduced NADP). These are the light-dependent photosynthetic reactions in chloroplasts. In the light-independent reactions, the NADPH and ATP are created. A pile of thylakoids is known as granum.

The light-independent processes take happen in the stroma. This is the site of carbon fixation; CO2 reacts with RUBP to generate GP (glycerate-3-phosphate) which is catalyzed by the enzyme RUBISCO (the most abundant enzyme in the world) (the most abundant enzyme in the world). The NADPH and ATP from the light-dependent processes convert GP to GALP (glyceraldehyde 3-phosphate). Two out of every 12 GALP molecules produced are used to synthesize glucose that can be employed either in breathing or in cellulose-forming condensation polymerization to add extra strength to the planted cell wall. The other GALP molecules are returned to RUBP.

7 0
3 years ago
Which is a reactant for the photosynthesis reaction?
dezoksy [38]

answer:

carbon dioxide !!

explanation:

hope this helps you !!

if i'm wrong pls let me know lol !!

5 0
1 year ago
Read 2 more answers
Binary fission is a characteristic of kingdom ______ and is most similar to the cellular processes of ___________.
vazorg [7]
Binary fission is a characteristic of prokaryotes and a few eukaryote species and is most similar to the process of mitosis; each parent cell divides into two daughter cells each containing half of the genetic material from the parent cell.
6 0
3 years ago
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