What group of Echinoderms has penta-radial symmetry?
A.Sand dollar
B. Sea Cucumber
C.Sea Star
D. Sea Urchin
E. All of the above
Answer is E
Examples of Pentaradial Symmetry. In the animal
kingdom, there is only one known phylum that exhibits pentaradial symmetry, and that's the Phylum Echinodermata. Echinoderms include sea stars (or starfish), sea urchins, sea lilies, sand dollars, and sea cucumbers.
I DONT UNDERSTAND PLEASE HELP ME OUT
What needs to change so that only the green solutes diffuse across the membrane?
What need to be changed is ; The use of selectively/semi-permeable membrane
To selectively allow the passage ( diffusion ) of a certain type of solute through a membrane in a solution, we should make use of a selectively permeable membrane which allows only the passage of a certain type of solute contained in the solution ( like the green solutes ).
The use of permeable membrane in a solution is to selectively allow flow of solutes or solvent from a region of lower concentration to a region of higher concentration.
Hence we can conclude that what needs to be change is The use of selectively/semi-permeable membrane will allow only the green solutes to diffuse across.
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Please help!! This is Science
Which of the following will most likely happen if the pancreas does not produce sufficient insulin?
A)Blood sugar will decrease because insulin lowers blood sugar when it rises too high.
B) Blood sugar will increase because insulin increases blood sugar when it falls too low.
C) Blood sugar will increase because insulin lowers blood sugar when it rises too high.
D) Blood sugar will decrease because insulin increases blood sugar when it falls too low.
Answer:
number 1
Explanation
i took the test and got it right
please anyone help me
Answer:
mutualism
hope it's right :)
DUE TODAY
A flower that has showy stamens, but no petals is,
Group of answer choices
perfect
bilateral symmetry
irregular
incomplete
Nitrogen is important for creating both protein and carbohydrates.
True
False
Answer: This is true.
What are four main types of animal tissues
Muscular
Support
Epidermal
Epithelial
Connective
Nervous
a.
Alternative energy sources like solar and wind power
are always available
b. are only replenished with human intervention
are renewable
d. are more versatile than fossil fuels
C.
Answer:
are only replenished with human intervention are renewable
Renewable alternative energy sources like solar and wind power only need human interaction to refill themselves. As a result, choice B is the right one.
Alternative energy sources are ways of producing energy that are more environmentally responsible, renewable, and sustainable than conventional fossil fuels like coal, oil, and natural gas. The significance of creating and utilising alternative energy sources has increased as concerns over the depletion of non-renewable resources and the effects of climate change become more and more apparent. Numerous alternative energy sources are being investigated and used globally due to technological breakthroughs and rising global awareness.
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Tall (T) is the dominant allele in pea plants, while short (t) is recessive. Which are the genotypes of a tall plant?
Help!!!!!
Answer:
d
Explanation:
A dominant always masks a recessive characteristic in a genotype, so Tt is a tall plant. TT has two dominant traits, so it is also tall.
A population of prairie dogs shares a habitat with a population of bison. The
bison migrate to another area. How will the prairie dog population size
change?
A. It will decrease to zero.
B. It will remain approximately the same.
C. It will increase.
D. It will decrease slightly.
What is osmosis and give an example
Answer:
An example of osmosis is slowly learning how to sew after sitting next to an experience seamstress. ... An example of osmosis is when red blood cells, which have a high concentration of protein and salt, are placed in a lower concentration fluid like water, the water will rush into the red blood cells.
Explanation:
why why why why whywhy
Answer:
ok
Explanation:
Answer:
What happens ahhhhhhhhhhhhhhhhhhhhh IOI IOI IOI IOI
Explanation:
Fred has four daughters. What is the probability that his fifth child will be a boy?
a. 100% b. 50% c. 25% d. 20%
Planting large numbers of trees would result in —
A
an increase in oxygen production
B
a decrease in oxygen production
C.
an increase in carbon dioxide production
D
a decrease in carbon dioxide production
Select the goals of conservation agriculture.
Answer:
Explanation:
Sustainable agricultural practices are intended to protect the environment, expand the Earth's natural resource base, and maintain and improve soil fertility. Based on a multi-pronged goal, sustainable agriculture seeks to: Increase profitable farm income. Promote environmental stewardship.
Humans and animals have critical periods. True or False?
Answer:
true
Explanation:
The development period of the animals and human beings starts after the birth when a person starts learning and development.
Answer:
False it the correct answer of Oddeyseyware
Explanation:
What is NOT a function of the reticular formation?
a. sleep b. breathing c. memory d. pain transmission
Answer:
c. memory
Explanation:
Memory is not a function of the reticular formation. Sleeping, breathing, and pain transmission all are the functions of reticular formation. Thus, the correct option is C.
What is reticular formation?
Reticular formation is a part of the pons region of brain which controls the sleep-wake cycle and also filters stimuli to separate out relevant background stimuli from irrelevant ones.
Reticular formation is one of the phylogenetically earliest parts of the brain and it is crucial for controlling some fundamental processes such as sleeping, breathing, and pain transmission.
The reticular formation is an essential process for the numerous activities of the brainstem. It is located strategically amid the significant nuclei in the brain cells and the nerve fibers that traverse it. The reticular formation looks like an intricate web network.
Therefore, the correct option is C.
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Describe Darwin's theory of evolution.
I need answers only in points for my lil sis, otherwise i'll report it..I'll reward brainliest to correct answer.
Answer:
Darwin's theory of evolution state that"all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce".
Answer:
Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. Individuals that are poorly adapted to their environment are less likely to survive and reproduce.PLEASE ANSWER ASAP
Which of these are vestigial structures?
O A. the sharp spines of a cactus
O B. the wings of a butterfly
O C. the hip bones found in some species of snake
O D. the thick fur and layer of fat of some mammals in cold climates
Answer:
C. the hip bones found in some species of snake
. Describe it in your own words
Answer:
the cycle of the re-growth and how nitrogen affects the elements around us
Explanation: I really just wanted to know if this would help you. hope it did.
DNA is found in _______ of the nucleus of cells.
1) ribosomes
2) chromosomes
3) adenine
4) red blood cells
why does competition happen?
Answer: D
Explanation: Competition is a negative interaction that occurs among organisms whenever two or more organisms require the same limited resource. All organisms require resources to grow, reproduce, and survive. ... Therefore, competitors reduce each other's growth, reproduction, or survival.
Flower diameter in sunflowers is a quantitative trait. A plant with 6-cm flowers, from a highly inbred strain, is crossed to a plant with 30-cm flowers, also from a highly inbred strain. The F1 have 18-cm flowers. F1 × F1 crosses yield F2 plants with flowers ranging from 6 to 30 cm in diameter, in approximately 4-cm intervals (6, 10, 14, 18, 22, 26, 30). An 18-cm F1 plant is crossed to a 6-cm plant. What is the probability of an offspring with one additive allele, if all genes that influence this trait are unlinked?a. 1/3b. 1/4c. 1/6d. 3/8e. 1/16
Answer:
d. 3/8
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
type of nutrition shown by all fungi
Fungi cannot produce their own food like plants can, nor can they consume it like animals can. Instead, fungi get their nutrition by absorbing it from their surroundings.
What is fungi ?Eukaryotic creatures known as fungi include yeasts, molds, and mushrooms as well as other microbes. These organisms fall under the category of fungus. The creatures that make up the Kingdom Fungi are pervasive and have a cell wall. They fall under the category of heterotrophs among living things.
Both varieties of fungi emit digestive enzymes into the nutrient surface they are growing on in order to feed. Proteins and carbohydrates are broken down by the enzymes and then absorbed through the walls of the hyphae.
All fungi are heterotrophic, which means they draw their energy from other living things. Like animals, fungi draw energy from live or dead organisms through the bonds of organic substances like sugar and protein.
Thus, Fungi cannot produce their own food like plants can, nor can they consume it like animals can.
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List and describe the 3 roles of DNA
Chickens that carry both the alleles for rose comb (R) and pea comb (P) have walnut combs, whereas chickens that lack both of these alleles (that is, rr pp) have single combs. From the information about interactions between these two genes, determine the phenotypes and proportions expected from the following crosses:
a. RR Pp × rr Pp;
b. rr PP × Rr Pp;
c. Rr Pp × Rr pp;
d. Rr pp × rr pp
Answer:
Explanation:
Available data:
There are two diallelic genes that code for chickens combDominant alleles R and P express rose comb and pea comb, respectivelyWhen they are together in a genotype, they express walnut combs, R-P-Recessive alleles are r and pGenotypes with only recessive alleles express single combs, rrppSo, genotypes and phenotypes would be like
Walnut combs, RRPP, RrPP, RRPp, RrPp (One dominant allele of each gene)Rose comb, RRpp or Rrpp (only R gene with dominant allele)Pea comb, rrPP or rrPp (Only P gene with dominant allele)Single combs, rrpp (no dominant alleles at all)a) Cross: RR Pp × rr Pp
Phenotypes: Walnut x Pea
Gametes) RP, Rp, RP, Rp
rP, rp, rP, rp
Punnett square) RP RP Rp Rp
rP RrPP RrPP RrPp RrPp
rP RrPP RrPP RrPp RrPp
rp RrPp RrPp Rrpp Rrpp
rp RrPp RrPp Rrpp Rrpp
F1) 12/16 = 3/4 R-P-, Walnut-combed animals
4/16 = 1/4 Rrpp, Rose-combed animals
b. Cross: rr PP × Rr Pp
Phenotype: Pea x Walnut
Gametes: rP, rP, rP, rP
RP, Rp, rP, rp
Punnett square) RP rP Rp rp
rP RrPP rrPP RrPp rrPp
rP RrPP rrPP RrPp rrPp
rP RrPP rrPP RrPp rrPp
rP RrPP rrPP RrPp rrPp
F1) 4/16 = 1/4 = 25% RrPP, Walnut-combed animals
4/16 = 1/4 = 25% rrPP, Pea-combed animals
4/16 = 1/4 = 25% RrPp, Walnut-combed animals
4/16 = 1/4 = 25% rrPp, Pea-combed animals
1/2 = 50% Walnut-combed animals, R-P-
1/2 = 50% Pea-combed animals, rrP-
c. Cross: Rr Pp × Rr pp
Phenotype: Walnut x Rose
Gametes: RP, Rp, rP, rp
Rp, rp, Rp, rp
Punnett square) RP Rp rP rp
Rp RRPp RRpp RrPp Rrpp
Rp RRPp RRpp RrPp Rrpp
rp RrPp Rrpp rrPp rrpp
rp RrPp Rrpp rrPp rrpp
F1) 2/16 = 1/8 RRPp, walnut
2/16 = 1/8 RRpp, Rose
4/16 = 2/8 RrPp, Walnut
4/16 = 2/8 Rrpp, Rose
2/16 = 1/8 rrPp, Pea
2/16 = 1/8 rrpp, single
6/16 = 3/8 walnut, R-P-
6/16 = 3/8 rose, R-pp
2/16 = 1/8 Pea, rrP-
2/16 = 1/8 Single, rrpp
d. Cross: Rr pp × rr pp
Phenotype: Rose x Single
Gametes) Rp, rp, Rp, rp
rp, rp, rp, rp
Punnett square) Rp Rp rp rp
rp Rrpp Rrpp rrpp rrpp
rp Rrpp Rrpp rrpp rrpp
rp Rrpp Rrpp rrpp rrpp
rp Rrpp Rrpp rrpp rrpp
F1) 8/16 = 1/2 = 50% Rrpp, Rose-combed animals
8/16 = 1/2 = 50% rrpp, single-combed animals
Which compound would most likely be found in all living organisms?
cellulose
ethanol
insulin
water
Answer:
water
Explanation:
its so obvious...
Answer:
cellulose and water .I think are answer
real ans only fast plzz
no wrong ok
Explanation:
A.Impulse Is The Answer.
Someone!! please and thank you
B. the dad has 2 upper case A's, and the mom has one uppercase A and one lower case a allele.
Answer: B I think the answer I was going for isn’t an option
Explanation: