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Ivan
2 years ago
5

The student is examining a tissue sample with a microscope. The student decides that it is squamous keratinized tissue. Which ty

pe of epithelial tissue is the student viewing?A) Stratified epithelium.B) Glandular.C) Neuroepithelium.D) Simple epithelium.
Biology
1 answer:
DIA [1.3K]2 years ago
6 0

Answer:

The correct option is A) Stratified epithelium.

Explanation:

Stratified epithelium is characterized by being formed by more than one layer of epithelial cells. According to the morphology of the cells of the outermost layer, they are classified as keratinized stratified flat epithelium when it has several layers and the outermost are flattened cells and with keratin. The most prominent location of this epithelium is in the skin, forming the epidermis. Its function is to protect and cover surfaces that are in direct contact with the outside or with irritating or traumatic substances.

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Natural selection changes allele frequencies because some _______ survive and reproduce more successfully than other
konstantin123 [22]
Hi the answer is individuals. Hope this helps.
7 0
3 years ago
Which condition or statement exemplifies the concept of genomics rather than genetics?
ValentinkaMS [17]

Answer:

A. The gene for insulin is located on chromosome 11 in all people.

Explanation:

Genomics includes the study of the content, organization, function and evolution of genetic information in a complete genome. The genomic term is relatively recent. It is considered that it was coined by Thomas Roderick, in 1986, to refer to the subdiscipline of genetics dedicated to the study of cartography, sequencing and analysis of the functions of complete genomes.

Insulin is formed as pre-proinsulin of the precursor protein. This is encoded by a 14kb series in the INS gene. In most animals including humans, a single gene for insulin is found. The human gene is located on the short arm of chromosome 11 at position 15.5 (11p15.5).

The insulin gene has recently been decoded in its complete form in genomic studies. The human and rat insulin genes have been reproduced and the DNA has been sorted. It has been shown that mouse and rat insulins are identical and have similar gene series and organization, which are similar in genetic series to humans.

5 0
3 years ago
Both osmosis and diffusion require energy and are considered active transport.
My name is Ann [436]
First one is true so yes
3 0
2 years ago
Read 2 more answers
Please answer 5&6. Thank you.
erastovalidia [21]

Answer:

5. The correct answer would be an option A. ova

Note: I assume that all the samples are of human origin.

DNA (deoxyribonucleic acid) content of somatic cells of humans consists of 46 chromosomes or 23 pairs of chromosomes. Gametes (sperm or ova) are haploid cells produced by the process of meiosis and contain half the number of chromosomes found in parent cell. Hence, they contain 23 chromosomes.

6. The correct answer would be an option J.

Sperm formation or spermatogenesis is the process by which spermatozoa (haploid gamete) is produced from germ cell with the help of meiotic division.

Meiosis results in the formation of four haploid (n) cells from single diploid (2n) parent cell. Here, 2n is given as 8 so, n would be equal to 4.

Meiosis I results in the formation of two secondary spermatocyte cells (both haploid or 4 chromosomes in this case) from single primary spermatocyte (diploid or 8 chromosome in this case).

Both the secondary spermatocytes undergo meiosis II to produce 4 spermatids (each haploid or 4 chromosome in this case). Spermatids differentiate and mature into spermatozoa.

3 0
3 years ago
Which of the following is/are common to chemiosmosis and the light-dependent reactions of photosynthesis? electron transport onl
blondinia [14]

Answer:

Both electron transport and a proton gradient

Explanation:

The process of oxidative phosphorylation in mitochondria and electron transport chain in photosynthesis undergo chemiosmosis to produce ATP molecules.

Chemiosmosis is a process where the energy utilized by the movement of proton and electrons produces ATP molecules.

Both the processes involve the movement of electrons through electron carriers where the reduced energy is utilized to drive the flow of protons through the plasma membrane. This creates a proton gradient across the plasma membrane which rotates the ATP synthase and converts the ADP molecules into ATP molecules.

Thus, the selected option is correct.

3 0
3 years ago
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