Describe a control for the above experiment. The factor, the presence of starch (if the process of photosynthesis has taken place or not) needs to be left out. How would you do this?
A sponge actually feeds by
a. acting as a net in a current that sweeps food particles through it.
b. squeezing the spongocoel cavity and sucking debris in and out through the osculum.
c. the beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.
d. the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge.
e. water the moves gently through the sponge and the amoebocytes that engulf passing food.
Answer:
c. the beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.
Explanation:
Sponges contains the unique feeding system that should be with the animals. Rather of mouths they have the tiny pores that we called as the ostia displayed on the outer walls via water is drawn. Here cells in the sponge walls strainer the food from the water because the water is pumped via the body and the little mouth
So as per the given options, the option c is correct as the collar cells would create the current and the food should be absorbed by the collar cells
Anyone know this problem?
Answer:yoda
Explanation:
Which of the following options is true for aerobic and anaerobic respiration? * The answer is between C and D
Answer:
C
Explanation:
Can I get Brainliest? plz?
Answer:
C is the correct answer.
Explanation:
This is because aerobic does in fact release large amounts of energy as opposed to anaerobic, which releases very small amounts of energy. It isn't D because in anaerobic, the products are organic AND inorganic.
state the major components of the human respiratory system.
Answer:
They are 3 in numbers
Explanation:
which are the airway, the lungs, and the muscles of respiration
- Describe how chromosomes are formed from DNA.
Answer:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure. DNA and histone proteins are packaged into structures called chromosomes.
Explanation:
Hope this helps
Help will mark brainliest
Answer:
your arteries that are connected to your lungs are also connected to your heart and then you need to be in the vena cava which are connected to your heart as well so you need the veins
What does topography show?
Answer:
I. The landforms such as valleys, volcanoes, hill, plateau, etc., in a geographical area or region.
II. The shape of the land.
Explanation:
In Geography, topography can be defined as the shape and structure of the Earth surface. Thus, a topographic map is used to graphically describe this features.
A topographic map can be defined as an accurate and detailed graphical (two-dimensional) description, representation or records of both natural and man-made (artificial) features on the surface of the Earth.
A topographic map is a two-dimensional model that uses contour lines to represent points of equal elevation above sea level such as mountains, hills, plains, valley etc.
The two-dimensional model of a topographic map graphically represents the height of a mount and the steepness of a slope through the use of contour lines.
Contours can be defined imaginary lines used for connecting locations that are having similar elevations on the Earth's surface.
Hence,a topography show two (2) main things and these includes;
I. The landforms such as valleys, volcanoes, hill, plateau, etc., in a geographical area or region.
II. The shape of the land.
what type of white blood cell is activate memory cells ?
Answer:
Memory B lymphocytes.
Explanation:
Bm lymphocytes are cells involved in the secondary innate humoral immune response. They're also, like other B cells, produce antibodies after the first exposure with an antigen and then produce large amounts of antibodies shortly after another exposure to the same antigen.
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6.If a planet is considered habitable, what would that mean?
We could form new habits there.
It would NOT be able to support life
It would have conditions necessary to support life
Only humans could live there
Answer:
If a planet is considered habitable it means that the planet has all the conditions necessary to support life ,these conditions can be the presence of oxygen
need help with this diagram question
The overall long-term effects of air pollution are not yet certain.
True False
Answer:
long-term effects of air pollution can last for years or for an entire lifetime. They can even lead to a person's death. Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema. ... Some scientists suspect air pollutants cause birth defects
Explanation:
confirmation needed
[extra characters]
Answer:
yeah the answers are write
Explanation:
as 1 one u the protein does actually get denatured.
2 one oxygen is a gas so it will diffusion across the membrane etc.
3rd one with out the enzyme it would reduce the rate of reaction.
What are the 3 major organs of excretion and what do they excrete?
Answer:
Skin, Kidneys, And Lungs
Explanation:
Excretion is the removal of toxic materials, waste products of metabolism and excess substances from organisms. Egestion is the passing out of undigested food as faeces, through the anus. Three major organs of excretion are the skin, kidneys and lungs. Sweat glands in the skin produce sweat.
This sea anemone and this ctenophora both have tentacles, which are body structures that help them catch food. However, sea anemone tentacles are short and can sting, while ctenophore tentacles are long for grabbing and cannot sting. What most likely explains why both species have tentacles and why the tentacles are different
Answer: Sea anemone and ctenophore both inherited tentacles from a shared ancestor population, but this population separated into different environments. In each environment, different types of tentacles evolved, which helped the populations survive.
Explanation:
most likely explains why both species have tentacles and why the tentacles are different is because sea anemone and ctenophore both inherited tentacles from a shared ancestor,
Then, this population separated into different environments and there was tye evolvement of different types of tentacles evolved, which therefore helped the populations survive.
what is cloning in plants? Please don't post inappropriate answers.
Answer:
hope it helps..
Explanation:
This is a process of taking part of a healthy plant, replanting it, and having it grow. Since cloning is a form of asexual plant reproduction–meaning only one 'set' of DNA–the resulting clones are an exact replica of the parent plant.
Gizmo: Rainfall and Bird Beak Evolution
The finches have their young during the rainy season. Based on the table, which part of the year do you think is the rainy season?
describe how the products of digestion are used
Answer:
they dont they dont exsit you will learn it in collage. So to sound super smart say they dont.
Explanation:
which of these is not used by the nervous system to instruct the endocrine system?
A. Neuroendocrine cells
B. Neurotransmitters
C. Hormones
D. Axons
Answer:
B) Neurotransmitters
Explanation:
The function of a neurotransmitter is either to excite or to inhibit the firing of brain synapses and thus to stimulate or mute brain activity. Some neurotransmitters have a general effect, while others have more specific roles in the brain.
Answer:
Hormones
Explanation:
Just answered the question, and this is the correct response
Directions: Consider a pedigree that is tracking an autosomal recessive trait, where two recessive alleles (tt) result
in the inability to taste a chemical known as PTC. The ability to taste PTC is determined by the presence of a
dominant allele (T). Complete the missing boxes in the chart. The first row has been done for you as an example!
Note: The ability to taste PTC may be more complex than a simple gene trait.
Individual Phenotype
Shaded?
PTC taster
Shape (in Pedigree)
Square
2.
No
1.
3.
4.
5.
6.
Male with genotype TT
Male with genotype Tt
Male with genotype tt
Female with genotype TT
Female with genotype Tt
Female with genotype tt
7.
8.
9.
10.
11.
12.
13.
14.
15.
The most well known function of the lymphatic system is defence against invading ___________________and disease. Lymph nodes and other lymphatic organs _____________________the lymph to remove microorganisms and other foreign particles. Lymphatic organs contain ____________________ that destroy invading organisms
A. oxygen-withdraw-erythrocytes
B. blood-absorb-lymphocytes
C. microorganism-filter-lymphocytes
Answer:
A
Explanation:
Question 7 of 25
Tropical rain forests support more species per unit area than any other
terrestrial ecosystem. What role do rain forests play in the health of the
biosphere?
A. Their colorful birds attract many tourists.
B. Their productive organisms quickly recycle nutrients.
Ο Ο Ο
C. They breed germs in pooling rainwater.
D. They keep plants from overtaking the planet.
SUBMIT
They breed germs in pooling rainwater . I hope this is the correct answer
Answer:
B. Their productive organisms quickly recycle nutrients
Explanation:
What is represented by
pyramid of numbers?
a
Answer:
A pyramid of numbers gives a count of the numbers of individual organisms at each trophic level in an ecosystem.
Explanation:
This type of pyramid gives a good picture of the large numbers of producers that are required to support just a few top-level consumers.
what is the defnition of endocytosis
Answer:
Endocytosis is the process by which cells take in substances from outside of the cell by engulfing them in a vesicle. These can include things like nutrients to support the cell or pathogens that immune cells engulf and destroy.
Hope it helps...
Which is a density dependent factor?
what does the muscular system do for the stomach
Answer:
it helps digest the food and push the food down the gut track
Explanation:
PLS PLS PLS HHELLPP MEEE
To be perfectly honest, I'm not sure what problem 32 is asking. It seems like there's set up to a question, but the actual question itself is missing.
=============================================
For problem 33, we divide the tape's distance by its time. I'm assuming that problem 33 is using the set up info from problem 32.
Recall that
distance = rate*time
we can rearrange things to say
rate = distance/time
So that's why we divide distance over time. The tape's length is effectively the distance, more or less. Imagine that one marker on the tape travels from one end of the reel to the other. It would have to travel the length of the tape when the full tape duration elapses.
----------
So,
rate = distance/time
rate = (260 meters)/(180 seconds)
rate = (260/180) meters per second
rate = 1.44 meters per second, which is approximate
I'm rounding to 3 sig figs.
En cuáles de estos Cuerpos hay Células? Corcho, botella de plástico, pera, roca, sangre, vaso de agua.
The genetic material appearing like a thread in the nucleus is known as _____. the spindle chromatin DNA
Answer:
chromatin
Explanation:
I learned about this already
Mechanical weathering is more rapid in warm, wet climates.
true or false?
Answer:
false
Explanation:
In cold climates, water freezes and expands as a result, breaking rocks with sheer force. The smaller rocks or sediments are washed away by erosion.
During the warm wet season, rocks expand and contract. As a result, the rocks are weakened and eventually fracture.
Note that the rate of weathering depends on the types of rock and temperature change. Rocks in tropical climates experience the highest rate of weathering because of the combination of high heat and heavy rainfall.