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nikitadnepr [17]
2 years ago
7

A farm pond, usually dry during winter, has plenty of water and aquatic pond life during the summer. one summer, sarah returns t

o the family farm from college. observing the pond, she is fascinated by some six-legged organisms that can crawl about on submerged surfaces or, when disturbed, seemingly "jet" through the water. watching further, she is able to conclude that the "mystery organisms" are ambush predators, and their prey includes everything from insects to small fish and tadpoles. sarah observed that the mystery pond organisms never come up to the pond's surface. if she catches one of these organisms and observes closely, perhaps dissecting the organism, she should find
Biology
1 answer:
Korvikt [17]2 years ago
7 0
Sarah should found a Gills when she observes closely and dissecting the organism. A gills is what species in the water use for breathing, when people or human have lungs to breathe, fish or underwater species use gills to breathe in water. It is a respiratory organs of animals especially fish.
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Differentiate between parental and recombinant gametes.
Eddi Din [679]

Answer: The two types of gametes are possible for when they are following genes that are on the same chromosomes. If they are crossing over, it does not occur, the products are known as Parental Gametes. If they are crossing over, the products are Recombinant Gametes. It is usually the simple matter that determine which of these gametes are recombinant gametes.

The difference between these two genes, is that are far apart and the frequency of recombination of genes is fifty percent. These genes that are closely located on the chromosome exhibit only have a few cross overs. The gametes that have recombined chromosomes, are known as Recombinant Gametes while the Parent Gametes are carrying on non-recombinant chromosomes.

I hope this helps you!

6 0
3 years ago
What are the sequence of events in the replication of DNA
Oliga [24]

Answer:

There are three main steps to DNA replication: initiation, elongation, and termination. In order to fit within a cell's nucleus, DNA is packed into tightly coiled structures called chromatin, which loosens prior to replication, allowing the cell replication machinery to access the DNA strands.

3 0
2 years ago
Which of the following is NOT a capillary transport mechanism?
Zanzabum

Answer:

Bulk flow

Explanation:

Generally when there is  mass movements of molecules of the fluids from a high pressure gradients to low pressure gradients; that is down the concentration gradients, the process is called Bulk flow. In relation to cells, it is  the exchange of material between cells  through the pores of the adjoining  cells. In xylem , water and minerals flow from high pressure roots to the leaves, and phloem transport food substances from the  leaves the sources at high pressure to other parts of the plants.

The capillary transport mechanisms involves the movements of fluids, ions across the fenestration of the capillaries due to  the hydostatic  pressure of the fluid from the high pressure to the low pressure cellular environments.This is common in the  glomerulus of the kidney, intestine, and some endocrine glands.

The single wall endothelial lining of  capillaries forms continuous wall which allows passage of ions and fluids while restricting movements of large molecules. Generally the high pressure  from the hydrostatic pressure forces these materials across the walls.

Simple diffusion  which follows concentration  gradient across membranes ensures distribution of substances across the walls for fast uptake by the cells.

The movement of Macromolecules  across capillary wall is called vesicular transport.

Thus Bulk flow is odd.

6 0
3 years ago
What are the symptoms and incubation period of an infection by the microbial agent?
kherson [118]

Answer:

Explanation: A person with a bacterial infection will often experience redness, heat, swelling, fever, and pain at the site of infection, as well as swollen lymph glands. A rash can indicate a fungal infection of the skin. However, viruses and bacteria may also cause skin conditions and rashes. While the incubation period is 2-10 days, average 3-4 days or sometimes a week.

7 0
3 years ago
1. To be regarded as safe, a sewage system must
wel

Answer:

c

Explanation:

6 0
2 years ago
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