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qwelly [4]
3 years ago
5

What organs make up the gastrointestinal tract? What are the accessory organs of digestion?

Biology
1 answer:
Aneli [31]3 years ago
5 0
The mouth, pharynx, esophagus, stomach, both intestines, and the anus make up the GI tract. Accessory organs are the salivary glands, liver, pancreas, and gallbladder. I hope this helps. 
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Which one is it?
Alex73 [517]

Answer:

D.

Explanation:

In humans when the haploid sperm and egg cell join in fertilisation the resulting zygote has a total of 46 chromosomes the correct number to develop. By having gametes which are haploid, when the gametes combine, diploid cells are maintained.

5 0
3 years ago
What type of mutation is albinism
lina2011 [118]
Albinism is caused by a mutation in one of several genes. Each of these genes provides instructions for making one of several proteins involved in the production of melanin. Melanin is produced by cells called melanocytes, which are found in your skin and eyes. A mutation may result in no melanin at all or a significant decline in the amount of melanin.
3 0
3 years ago
_______carries oxygen, bound to hemoglobin, to deliver to the tissues. This is an anucleate cell type.
Keith_Richards [23]

Red blood cell (or erythrocyte): carries oxygen, bound to hemoglobin, to deliver to the tissues. This is an anucleate cell type.

Platelet (or thrombocyte): important in the process of blood clotting. Generated from the megakaryocyte.

Neutrophil: short-lived, phagocytic cell that is quick to respond to pathogen infection. Most abundant of the leukocytes.

Lymphocyte: used in the immune response, as either B- or T-cells.

Monocyte: wandering blood cell. Largest of the leukocytes.

Eosinophil: phagocytic cell that engulfs antibody-covered pathogens; an acidic granulocyte with bi-lobed nucleus.

Basophil: releases histamine and heparin. Least abundant leukocyte.

6 0
3 years ago
How can gene flow, genetic drift, and natural selection all influence macroevolution?
loris [4]

Answer:

Macroevolution refers to large-scale evolutionary changes that break the species barrier and can give rise to new species and even affect higher taxonomic groups.The basic evolutionary mechanisms migration, genetic drift and natural selection can produce important evolutionary changes if given enough time.Large groups and macroevolutionary trends originate in gradual, adaptive stages, as a product of natural selection acting at the level of individuals , but operating for much longer periods of time.All depends on the mutations originating new alleles or genes, which imply the existence of very different characters from the pre-existing ones, and that these different characters are selected because they imply a better adaptation to the environment.

Explanation:

Macroevolution refers to the evolutionary changes that occur on a large scale, such as the genesis of high-ranking taxonomic groups: the appearance of species within their taxonomic groups, the appearance of evolutionary trends, the acquisition of anatomical characteristics that characterize the groups.For there to be an evolutionary change, then, new properties must emerge that constitute a new species. Evolution is a process of changes at the species level, distinct from those that occur in each individual organism. Gene flow is the transfer of alleles of genes from one population to another. Contributes to variation and diversity of individuals. Evolution is then the change of allelic frequencies over time.Macroevolution takes place through the process of natural selection, that is, the differential reproduction of individuals, and adaptive improvement over a very long period of time. This type of evolution is based on interpreting the appearance of new species or large groups, as well as mass extinctions, with the subsequent proliferation of new groups. The evolutionary changes that determine the origin of body plans are based on macromutations on which natural selection acts.

4 0
3 years ago
small, nonpolar, hydrophobic molecules such as fatty acids easily pass through a membrane's lipid bilayer. very slowly diffuse t
Olin [163]

Small, nonpolar, hydrophobic molecules such as fatty acids pass readily through a membrane's lipid bilayer.

The cell membrane, which is selectively permeable and controls the passage of molecules into and out of the cell, facilitates the movement of substances or molecules throughout the cell.

A thin polar membrane composed of two layers of lipid molecules is the lipid bilayer. These membranes are flat sheets that surround all cells and act as a continuous barrier.

A lipid-rich cell membrane will not repel small, nonpolar hydrophobic molecules like fatty acids, so they enter the cell through simple diffusion. This indicates that they easily and without assistance penetrate the lipid bilayer of a membrane. Because they are a class of lipids and soluble in the lipid layer of the cell membrane, fatty acids are able to pass through the lipid-bilayered membranes easily.

Small, nonpolar hydrophobic molecules such as fatty acids

a. pass readily through a

membrane's lipid bilayer

b. diffuse very slowly through the lipid bilayer

c requires special channels to enter a cell

d. are actively transported across cell membranes

c. must enter the cell via endocytosis

Know more about Fatty acids here: brainly.com/question/23785570

#SPJ4

4 0
1 year ago
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