Describe the motion of paramecia
Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove, and inside the mouth opening. The food passes through the cell mouth into the gullet.
The parent cell that enters meiosis is diploid, whereas the four daughter cells that result are haploid. Which statement correctly describes how cellular DNA content and ploidy levels change during meiosis I and meiosis II? (Note: Ignore any effects of crossing over.) View Available Hint(s) Which statement correctly describes how cellular DNA content and ploidy levels change during meiosis I and meiosis II? (Note: Ignore any effects of crossing over.) DNA content is halved in both meiosis I and meiosis II. Ploidy level changes from diploid to haploid in meiosis I, and remains haploid in meiosis II. DNA content is halved in both meiosis I and meiosis II. Ploidy level changes from diploid to haploid only in meiosis II. DNA content is halved only in meiosis II. Ploidy level changes from diploid to haploid in meiosis I, and remains haploid in meiosis II. DNA content is halved only in meiosis I. Ploidy level changes from diploid to haploid in meiosis I, and remains haploid in meiosis II. DNA content is halved only in meiosis I. Ploidy level changes from diploid to haploid only in meiosis I
DNA content is halved in both meioses I and meiosis II. Ploidy level changes from diploid to haploid only in meiosis II.
In meiosis, one diploid cell produces four haploid cells. At the end of meiosis I, just like in mitosis, we will have two diploid daughter cells and then these two cells undergo cellular division again. In this secondary division, more precisely in the anaphase II, the centromere divides (this process does not happen in the meiosis I anaphase I, where homologous chromosomes move together to opposite poles) and sister chromatids move to opposite poles, leaving four individual cromatids following a cytoplasmatic division forming four new haploid cells.
Which organisms would MOST likely be adapted to the open ocean? A. frogs
Which statements are true? Hurricanes can be caused by physical processes in the hydrosphere.
Most of the earth's freshwater can be found in the air and streams.
Most plants and animals need freshwater to survive.
Ocean currents move warm water from the equator toward the poles.
The water cycle is powered by the sun.
The correct answer is - 1), 3), 4) and 5) are correct statements.
Hurricanes are the tropical storm caused in tropical or sub tropical water bodies. Hurricanes are tropic cyclone caused where warm air rises from ocean water and replaced by the cooler are and then again with warm air and cooler in rapid manner.
Most plants and animals need fresh water for their survival because body comprises water to perform several reaction and prevent from dehydration.
Ocean currents move warm water to the poles from the equator due to regulation of the global water temperature. Thus is maintained by the m,mechanism of the convection current that carries the warm water from the equator to the poles and at the poles, these warm warm because of the lowering temperature, cools an sinks.
The water cycle is the process in which water circulates within the spheres and begins with evaporation by sun.
Thus, the correct answer is - 1), 3), 4) and 5) are correct statements.
In plants, flowers have reproductive parts that enable it to make seeds. In humans, which parts carry out that function?
a. pituitary gland and lymph nodes
b. ovaries and testes
c. fallopian tubes and colon
d. pancreas and hypothalamus
Is it B? :c
If a genetic mistake (i.e., a mutation) occurred during replication, and the new DNA strand has the sequence CAG, what amino acid would result? A. Valine B. Arginine
In addition to carrying nutrients and wastes, which other function does water have in the body?
Water is one of the basic constituent for life. It makes up 60 percent of the human body weight.By analyzing the human body we came to know that water is one of the building blocks in making up most of cells and tissues.
Now there are some specific functions of water inside the human body.As some of the functions are as below.
"Medium for transportation"
Water mainly acts as a medium for transportation of different materials inside a body. But, there are also some other operations for water to carry out inside human body.
"Lubrication of Joints"
Water helps in keeping the human body joints healthy and lubricated. The lubrication is important to reduce any friction during motion.
Human body needs an equilibrium when it comes to the level of materials it posses. For that reason water homeostasis is carried out, in order to have an optimum amount of water inside human body.
The optimum temperature for human body to operate well is about 37 degree centigrade which is about 98.6 Fahrenheit. Now water can regulate the temperature by initializing excessive sweating and through urinating or even avoiding the two operations mentioned before to avoid water loss.
It controls body temperature.
I took the quiz.
The school hockey team travelled 150 km to a tournament by bus. The bus drove at 90 km/h for most of the way, but was delayed by a storm, when its speed was only 30 km/h. If the trip took 3 hours, how far did the bus travel in the storm
The bus traveled 1 hour at 90 km/h and 2 hours in the storm at 30 km/h
From the example, let us recall the following statements
The school hockey team traveled 150 km to a tournament by bus.
The bus drove = 90 km/h for most of the way
The speed was only 30 km/h. when delayed by a storm
Now, lets find how far the bus travel in the storm
90x + 30y = 150
x+ y = 3
30x + 30y = 90
-(90x + 30y = 150)
-60x + 0 = -60
x = 1
x + y = 3
1 + y = 3
y = 2
Therefore, they travelled 1 hour at 90km/h and 2 hours in the storm at 30km/h
Which organelles are found in a plant cell? Check all that apply. Endoplasmic reticulum centrioles cell wall vacuoles lysosomes mitochondria chloroplasts cell membrane
Answer: Endoplasmic reticulum, cell wall, vacuoles, lysosomes, mitochondria, chloroplasts and cell membrane.
Explanation: Following are the organelles found in plant cells.
Endoplasmic reticulum is the membrane bound organelle found in both plants and animals cells. The endoplasmic reticulum forms a network of canals it helps in transport of material in and out of the cell.
Cell wall is a rigid structural layer which forms an envelope around a cell. It is a rigid structural layer which is composed of cellulose. It provides protection to the cell and exhibit pores which facilitates the transfer of materials to pass to and from the cell membrane.
Cell membrane is a layer that surrounds the cell and separate it from the external environment. It is a selectively permeable structure which controls the material which is going in and out of the cell.
Vacuoles are membrane bound fluid filled organelles which store materials which are not required by the cells and helps in the waste disposal. They store materials like water, food, sugars, minerals and other waste products.
Chloroplasts are the organelles specifically found in the plant leaves. They have special pigment called as chlorophyll that traps the light energy from sun to conduct photosynthesis.
Mitochondria are tube like organelles these are the called as the powerhouse of the cell. Their function is in cellular respiration. They break the sugar molecules to produce ATP as a source of energy.
Lysosomes are the small sac like structures they exhibit a single membrane which contains strong enzymes which are capable of digesting cellular wastes. They also called as suicidal bags.
Centriole is an organelle which is not found in the plant cell. It is only found in the animal cells, their is a pair of centriole, which are minute cylindrical organelles near the nucleus. These helps in the development of spindle fibers during cellular division.
Answer: everything is correct besides B
Explanation: don't listen to that guy^