Answer:
Stratocumulus.
Explanation: Stratocumulus is the closest / lowest type of cloud.
Although there are 4 types of clouds Stratocumulus is th lowest.
Applying sterile, moist nonadherent dressings is done to
prevent drying and breakage of the sac; any opening increases the risk for
infection of the central nervous system. Diapering is contraindicated until the
defect is repaired; the diaper may irritate the sac and cause rupture,
predisposing the infant to infection. The infant is generally placed in a
neutral position to reduce pressure on the affected area. The legs are abducted
to counteract subluxation because the infant is unable to move the legs.
Answer:
The correct answer is a) A gene.
Explanation:
DNA is a molecule that contains genetic information. However, when the question states that there are specific sequences, that refer to genes, that are pieces of the DNA that code for specific proteins with a process of transcription and translation.
Answer:
Increasing carbon dioxide concentration increases the rate of photosynthesis as carbon dioxide (CO2) is
<em><u>a limiting factor.</u></em>
<em><u /></em>
Explanation:
Some limiting factors like carbon dioxide, temperature etc. influence the photosynthetic rate, which may end up <em>reducing the potential amount of carbohydrate produced by photosynthesis</em>. Carbon dioxide is important for this form of biosynthesis: it provides the inorganic carbon that is integrated into carbohydrate molecules.
The photosynthetic rate can be slowed by a decline in the concentration of available carbon dioxide.
<em> 6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
</em>
Carbon Dioxide + Water + Light Glucose + Oxygen
Answer:
- One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.
Explanation:
Germ cells are diploid reproductive cells in charge of gamete production. Germ cells divide by mitosis and meiosis. Through mitosis, they originate more sexual cells, but through meiosis, they produce gametes -sperm and egg cells-. This process is known as gametogenesis.
Gametes´destiny is to merge during fecundation, and a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell and suffers successive mitosis to form the new organism.
Spermatogenesis is the process of production and maturation of sperm cells. Spermatogonia are the masculine diploid germ cells, carrying 46 chromosomes. These germ cells suffer mitosis to reproduce. Some of them stay as spermatogonia, and some others become primary spermatocytes, which are in charge of gamete production. Primary spermatocytes are also diploid cells, meaning that they still carry 46 chromosomes.
Each primary spermatocyte replicates its genetic material and then goes through meiosis I to produce two daughter haploid cells called secondary spermatocytes, each of them carrying 23 chromosomes. Each secondary spermatocyte will produce two other haploid daughter cells by meiosis II.
The total result from the two cellular divisions of each primary spermatocyte is four haploid daughter cells called spermatids.
During spermiogenesis, spermatids mature into spermatozoa or sperm cells. Each sperm cell characterizes by being composed of a head, midpiece, and tail.
- DNA replicates once, but cells divide twice TRUE
- The products are spermatozoa that each have a head, midpiece, and tail TRUE
- Spermatids containing 23 chromosomes (1n) are produced TRUE
- One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.
- Genetically diverse spermatids are created TRUE