Answer:
Due to different pigments.
Explanation:
The multicellular algae are red, green and brown because of the presence of pigments. The red algae are red in colour because of the presence of the phycoerythrin which is a type of pigment. This pigment reflects red light due to already presence in its body and absorbs blue light that is necessary for photosynthesis process. The brown algae contain fucoxanthin pigment and green algae contain xanthophylls pigments that are responsible for its colour so we can conclude that these different types of pigments are responsible for the different colour of algae.
Which of the following statements about cells is FALSE?
a.Cells develop and maintain complex organization to their existence.
b.Cells respond to the environment.
c.Cells reproduce to form new cells.
d.Cells are not organisms.
Answer:
a. i think
Explanation:
brainliest pls
Check all that apply regarding the hypothalamus. Check All That Apply Responds to changes in ambient temperatureResponds to changes in ambient temperature Regulates the release of thyroid stimulating hormoneRegulates the release of thyroid stimulating hormone Regulates sleep and wakefulnessRegulates sleep and wakefulness Evokes nausea during anxietyEvokes nausea during anxiety Secretes the hormone melatoninSecretes the hormone melatonin Relays sensory information to the cerebrumRelays sensory information to the cerebrum
Answer:
I. Responds to changes in ambient temperature.
II. Regulates sleep and wakefulness.
III. Regulates the release of thyroid stimulating hormone.
IV. Evokes nausea during anxiety.
Explanation:
Hypothalamus can be defined as a small portion of the mammalian brain responsible for the secretion of hormones through the stimulation of the pituitary gland.
It is located between the midbrain and the thalamus. Also, hypothalamus is the most inferior portion in the diencephalon of the forebrain.
Basically, hypothalamus is the most important portion of the brain in vertebrates that controls various bodily functions.
The functions of the hypothalamus includes;
I. Responds to changes in ambient temperature.
II. Regulates sleep and wakefulness.
III. Regulates the release of thyroid stimulating hormone.
IV. Evokes nausea during anxiety.
How do T cells coordinate the immune system?
Answer: Helper T cells, or Th cells, coordinate immune responses by communicating with other cells. In most cases, T cells only recognize an antigen if it is carried on the surface of a cell by one of the body's own MHC, or major histocompatibility complex, molecules.
Explanation:
Answer:
T cells identify pathogens based on antigens on the surface of pathogens. The T cells then multiply and stimulate B cells to produce antibodies. The antibodies attach to the antigens, making the pathogens a target for phagocytes.
Explanation: sample response
HI
Which of the following take place in the
mitochondria? Select all that apply.
glycolysis
citric acid cycle
electron transport chain
oxidative phosphorylation
Answer:
D
Explanation:
When performing low-intensity activities, the oxidative system uses fats as a substrate to produce ATP. Thus, option D is correct.
What is the significance of oxidative phosphorylation?The majority of the ATP required for higher animals and plants to sustain life is produced by oxidative phosphorylation, which is also in charge of establishing and preserving metabolic equilibrium.
The last phase of aerobic cellular respiration is oxidative phosphorylation. The production of many ATP molecules is the primary goal of oxidative phosphorylation.
The energy system that largely supports prolonged, low-intensity exercise is sometimes referred to as the aerobic system. By boosting oxygen availability and enhancing our capacity to metabolize fat for energy, it supports this kind of exercise.
Therefore, oxidative phosphorylation take place in mitochondria.
Learn more about oxidative phosphorylation here:
https://brainly.com/question/29104155
#SPJ2
6.) State the principle of dominance? I
Answer:
Please find the answer below
Explanation:
According to the convener, Gregor Mendel, the law of dominance states that one allele of a gene called DOMINANT ALLELE possess the ability to mask the phenotypic expression of another allele called RECESSIVE allele.
This law explains that in a heterozygous state of a gene, the dominant allele will always be expressed over the other. For example, in the trait of height, if T is tall and dominant, it will mask the allele of the other phenotype.
What methods are used
to classify living things
Into groups?
Explanation:
We can classify living things on these things:-
1) If they can carry out processes like respiration, ingestion.
2) If they move on their own
3) if they can talk
THIS WAS A FAIRLY SIMPLE QUESTION!
PLEASE ANSWER ASAP!!
Which of the following is most likely to cause the extinction of a species?
O A. genetic variation
O B. mutation
O C. natural selection
O D. a changing environment
Answer:
changing environment
Explanation:
If the species fails to adapt, it will die off.
Organisms are named and classified based on physical characteristics in
•evolutionary trees
•Linnaeus taxonomy
•molecular clocks
•Freudian clads
Answer:
Linnaeus taxonomy
Explanation:
organisms are named and classified based on physical characteristics in linnaean taxonomy Which of the following is the most abundant group of organisms on Earth.
Yeasts are single-celled eukaryotic organisms. Yeasts undergo mitotic division when conditions are favorable. When limited nutrients are available, yeasts start dividing by the process of meiosis.
What is a likely reason for the change from mitosis to meiosis during reproduction under these conditions?
The process of meiosis produces greater numbers of yeast cells at a faster rate as compared to mitosis.
Crossing over of genes during meiosis increases diversity and the chance of survival of the next generation.
Duplication of genes during meiosis ensures efficient functioning of the newly formed yeast cells.
The yeast cells formed by meiosis are able to adapt as well as the parent cell because they are identical.
Yeasts change from mitotic to meiotic division when conditions are unfavorable because meiosis increases genetic diversity and improves their chances of survival in unfavorable conditions.
During meiosis, crossing over of genetic materials between non-homologous chromosomes creates genetic recombination and makes the resulting offspring to be genetically more diverse than their parents.
The increased genetic diversity will increase the chances of survival of the offspring in a constantly changing environment. In other words, the more genetically diverse a population is, the more their chances of surviving adverse environmental conditions.
More on genetic variability can be found here: https://brainly.com/question/13952713?referrer=searchResults
California condors (Gymnogyps californianus) are listed on the IUCN Red List as being critically endangered. Since 2003, the California Condor Recovery Program has been reporting their demographic data. In 2012 they estimated the number of individuals living in the wild to be 235. If their intrinsic rate of natural increase is 0.089 ind/year, predict the size of the California condor population in 2022.
Answer:
≈ 572
Explanation:
Predict the size of the California condor in 2022
we can predict this value with this relation below
Nt = No*e^(rt) --- ( 1 )
where ; Nt = Future population , No = initial population, r = intrinsic rate of increase , t = time
No = 235
r = 0.089
t = 2022 - 2012 = 10
Insert values into equation 1
Nt = 235 * e^( 0.089 * 10 )
= 235 * e^0.89
≈ 572
Therefore the size of the California condor population in 2022 ≈ 572
How does artificial selection cause rapid changes in the phenotypes of organisms?
A.By selecting dominant genotypes
B.By changing the number of
chromosomes
C.By changing the frequency of alleles and
selecting new combinations of traits
D.By stimulating the species to increase
the production of new mutants
Answer: A. By selecting dominant genotypes
Explanation:
Artificial selection or selective breeding can be defined as the induced breeding process in which humans select parents of plants and animals that have desired traits that are beneficial for them to produce offspring that have characteristics of both parents and they are of improved yield and quality. This brings the change in the phenotypes of the offspring as compared to the parents. As the passage of dominant desirable traits in the genotype from either of the parent when gets expressed then the phenotype of the organism also change.
The water vascular system of echinoderms (A) functions as a circulatory system that distributes nutrients to body cells. (B) functions in locomotion and feeding. (C) is bilateral in organization, even though the adult animal is not bilaterally symmetrical. (D) moves water through the animal’s body during filter feeding. 4. Which of the following combinations of phylum and description is correct? (A) Echinodermata—radial symmetry as a larva, coelom (B) Nematoda—roundworms, internal skeleton (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity (D) Porifera—gastrovascular cavity, coelom
Answer:
The water vascular system of echinoderms (B) functions in locomotion and feeding.
Which of the following combinations of phylum and description is correct? (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity
Explanation:
Echinoderms are marine animals. They have a water vascular system that make them able to move (locomation), respiration and food and waste transportation. This system is full of different canal along the body.
Echinodermata has not a radial symmetry as a larva, in fact it has a bilateral symmetry and coelom present. When it comes to Nematoda, they are roundworms and have a pseudocoelomate. Finally, porifera has a gastrovascular cavity and no coelom.
Why is parthenogenesis considered an adaptation?
what type of weather is associated with a continental polar air mass
Answer: Cold and dry, originating from high latitudes, typically as air flowing out of the polar highs.
Explanation:
Which of the following BEST describes the difference between the functions of nucleic acids and enzymes? (A) Nucleic acids inhibit biochemical reactions, while enzymes provide structural support in cells.
B) Nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions
C) Nucleic acids are used as the building blocks of proteins, while enzymes are used as the building blocks of phospholipids
D) Nucleic acids transmit signals that begin biochemical processes, while enzymes convert carbohydrates into lipids and proteins
Answer:
B) Nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions
The correct option is, (B) Nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions.
Which of the following best describes the difference between functions of nucleic acids and enzymes?Nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions. Some proteins catalyze biochemical reactions.What is the main difference between nucleic acid and protein structure?Amino acids and nucleic acids are two categories of crucial macromolecules in the cell. The primary distinction between amino acid and nucleic acid is that amino acid is a monomer and is used to construct proteins, whereas nucleic acid is a polymer of nucleotides that stores genetic information of a cell.What is the difference between nucleic acid and?Nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), carry genetic information which is read in cells to make the RNA and proteins by which living things function. The well-known structure of the DNA double helix allows this information to be copied and passed on to the next generation.How the functions of proteins differ from the functions of nucleic acids?Nucleic acid plays a crucial role in the storage, transmission, and utilization of the information required for life's operations. Amino acids, which are the building blocks of protein and necessary for life, are present.
Learn more about nucleic acids and enzymes here:
https://brainly.com/question/21731440
#SPJ2
what’s The definition of Troposphere
the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.
Answer: its basically in simple terms: the lowest point of the earth's atmosphere
Explanation:can i get brainliest :D
Scientists build models based on what they know from previous research to derive testable hypotheses.Independently, both Watson and Crick and their competitor Linus Pauling constructed an incorrect triple-helix model with the nitrogenous bases arranged so they were on the exterior of the molecule and the phosphate groups on the interior. What evidence caused Watson and Crick to revise their model (CHOOSE 2)
Answer:
Hello. You didn't show the answer options, but we can consider that Watson and Crick revised the DNA model after seeing DNA images taken through Franklin's x-ray and by observing the pairing of the nitrogenous bases.
Explanation:
For a long time it was believed that the DNA molecule had 3 strands, instead of two, however this information was inaccurate and although defended by some scholars it was somewhat controversial and showed the need for further investigation. With that in mind, Watson and Crick decided that it was necessary to evaluate DNA in a three-dimensional way and therefore, they obtained x-ray images of DNA molecules, taken by Franklin. In these images, it was possible to notice that the DNA had two strands, instead of three. To prove this discovery, Watson and Crick analyzed the nitrogenous bases discovered by Chargaff and the way they were paired, coming to the conclusion that the DNA had two strands.
Turtles and leopards all have four limbs and an amnion. True The common ancestor of lamprey and lancelets had a vertebral column. False In this tree, frogs are the sister taxon of turtles and leopards. False Leopards and bass are more closely related than turtles and bass. False The taxon that shares the most recent common ancestor with frogs is the bass. True Leopards and lancelets have no common ancestor. False
Answer:
Explanation:
The objective is to conclude if the statements are true or false based on facts.
1)[tex]\text{ Turtles and leopards all have four limbs and an amnion. }[/tex] True
2) [tex]\text{The common ancestor of lamprey and lancelets had a vertebral column. }[/tex] False
This is because their ancestor is a Chordate who doesn't have a vertebral column but a notochord.
3) True
[tex]\text{Frogs are the sister taxa of turtles and leopards because they are more }[/tex]
[tex]\text{related to a common ancestor.}[/tex]
4) [tex]\text{Leopards and bass are more closely related than turtles and bass}[/tex] False
This is because the bass is a fish that possess some characteristics traits related to an amphibian (turtle) as compared to a mammal(leopard).
5) [tex]\text{The taxon that shares the most recent common ancestor with frogs is the bass.}[/tex] False
The taxa of turtles share a more common ancestor with frogs compared to bass.
6) [tex]\text{Leopards and lancelets have no common ancestor. }[/tex] False
The common distant ancestor for leopards and lancelets is known as Chordates
The stamen relates to ______________ by producing pollen
photosynthesis
cellular respiration
transpiration
growth
reproduction
Answer:
reproduction
I am typing this part because it wouldn't let me submit because I didn't have enough written
Why is Meiosis important to organisms?
Answer:
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.
Explanation:
Answer:
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.
Explanation:
Hope this helps!
Which type of reproductive isolation occurs when there are differences in the size or shape of reproductive parts and may prevent interbreeding
Temporal isolation, in biology, a type of reproductive isolation mechanism among sexual organisms in which the differences in the timing of critical reproductive events prevent members of closely related species, which could otherwise breed with one another, from mating and producing hybrid offspring.
A prezygotic barrier called temporal isolation promotes speciation, or the creation of new species. Isolation on account of geography, reproduction, or behavior are other prezygotic obstacles.
What reproductive isolation occurs in temporal isolation?A reproductive isolation process known as temporal isolation prevents members of closely related species from mating and producing hybrid offspring.
Temporal isolation occurs when essential reproductive activities occur at different times in sexual organisms.
When two or more species reproduce at different times, this is known as temporal isolation. For instance, three different orchid species might be found in the same rain forest.
Therefore, Each species possesses one-day-only blooms that need to be pollinated on that day in order to produce seeds.
Learn more about temporal isolation here:
https://brainly.com/question/29335383
#SPJ2
what are the causes of biodiversity loss????
assume that an orbit of a skull was damaged in an accident which bones of a skull might need to be considered for reconstruction in an orbital surgery?
Explanation:
Orbital injuries are normal but difficult to treat. The dorsal, lacrimal, superior and smaller sides of the sphenoid, and patella bones are called the bony sphere. The ethmoid, prefrontal, and maxillary bones serve as suspension systems for the ear sphere and are directly connected to sinus.
Can someone please tell me which ones I am getting wrong? (my answers in parentheses)
Read the statements and decide if it applies to RNA, DNA, or both:
1. Has both purines & pyrimidine (Both)
2. Contains Ribose (RNA)
3. Has negatively charged phosphate groups (Both)
4. Contains hydrogen bonds between nitrogen bases (DNA)
5. The monomer is a nucleotide (DNA)
6. Composed of CHONP (? Both)
7. Contain the Uracil nitrogen base (RNA)
Answer:
5 is both RNA and DNA....they are building blocks are nuclotides because they are both Nucleic Acids
MICROSCOPE PARTS Identify all parts of the microscope and associated items. ___ On/ Off switch ___ Eyepiece/ Ocular lens ___ Arm ___ Nosepiece ___ Objective lenses ___ Stage ___ Diaphragm ___ Stage adjustment knob ___ Base ___ Coarse adjustment knob ___ Lens paper ___ Fine adjustment knob ___ Immersion oil ___ Slide/ slide box ___ Kimwipes QUESTIONS 1) What is the proper way to carry a microscope
Answer:
Explanation:
From the given question: The labels contain the part of the missing microscope. The missing microscope is shown in the picture below.
On/off switch - K
Eyepiece/ocular lens - C
Arm - I
Nosepiece - F
Objective lens - G
Stage - D
Diaphragm - E
Stage adjustment knob - J
Base - M
Coarse adjustment knob - L
Lens paper - A
Fine adjustment knob - N
Clip - H
Immersion oil - B
Slide box - P
kimwipes - O
We are asked to also explain the proper way of carrying a microscope. Now, from a biological perspective; the correct way to handle the process of carrying a microscope is to hold it at the stem with one hand thereby supporting it at the base with the other hand.
Also, the typical magnification for an ocular lens is 10X
Where do sperm go after leaving the epididymis?
A. Vas deferens
B. Urethra
O C. Ejaculatory duct
D. Seminiferous tubules
Sperm goes to the vas deferens after leaving the epididymis, which is option A. Details about sperm cells can be found below.
What is sperm cell?Sperm is the reproductive cell or gamete of the male. The sperm is responsible for the fertilization of a female gamete to form zygote.
The sperm cell is produced via a process called spermatogenesis which occurs in the testes.
The epididymis is a narrow, tightly-coiled tube where sperm are stored during maturation. However, the sperm enters the vas deferens after leaving the epididymis.
Learn more about sperm at: https://brainly.com/question/9735466
#SPJ1
346 56
70 86 90 10
100 110 120 130 140 150 160 170 180 190 200 210
236
240 250 260 270 280 290 300
QUESTION 17
Item A
" "Item B
DARK CHOCOLATE NUTS & SEA SALT
DARK CHOCOLATE CHUNK
Nutrition
Facts
Serving size
1 bar (409)
Calories 200 Sodium 140mg
ArtServing Daily Value Angerving Daily Value
Total Fat 159 19% Total Carb. 169 696
Sat. Fat 39
15% Fiber 79
25%
Trans Fat og
Total Sugars 59
Polyunsaturated Fat 3.59 nd. 4g of Added Sugars 896
Monounsaturated Fat 89 Sugar Alcohol og
Cholesterol Omg 0% Protein 69
6%
Vitamin D 0% Calcium 4% Iron 6%. Potassium 4%
Daily Value Amount/Serving
Nutrition
Daily Value
Total Fat 5g
Facts
6% Total Carb. 239
8%
Sat. Fat 1.59 8%
Dietary Fibor 29 7%
Serving size Trans Fat og
Polyunsaturated Fat 19
Total Sugars 89
1 bar (359)
Monounsaturated Fat 2.59
Ind. 89 Added Sugars 10%
Cholesterol 0mg 0% Sugar Alcohol og
3% Protein 2g
Vitamin D 0% Calcium 2% • Iron 6%. Potassium 2%
Calories 150 Sodium 65mg
INGREDIENTS: Almonds, peanuts, chicory root
fiber, honey, palm kernel oil, sugar, glucose syrup.
rice flour, unsweetened chocolate, cocoa powder,
sea salt, soy lecithin, natural flavor, cocoa butter.
INGREDIENTS: Oats, cane sugar, semi-sweet chocolate (sugar, chocolate
liquor, cocoa butter, soy lecithin, vanilla extract), canola oil, tapioca syrup,
brown rice, millet, honey, coconut, buckwheat, amaranth, molasses,
brown rice flour, oat flour, gum acacia, quinoa, sea salt, brown rice syrup.
vanilla extract, Vitamin E (tocopherols to maintain freshness).
KIND
AUTY PRE
Allergen Information: Contains almonds, peanuts
and soy.
Made in a facility that processes tree nuts and
sesame seeds.
May contain nut shell fragments.
KIND Pacetate Chunk
HEALTHGRANS SRL
Allergen Information:
Contains coconut and soy.
Made in a facility that process.
es peanuts, tree nuts and
sesame seeds
+
SITE
If someone were to ask you which one they should consume as a snack, which would you choose? Justify your answer using information
provided from the labels.
Answer:
i dont know what this is sorry
Explanation:
Answer:
im srry love i dont know it too long
Explanation:
What% of DNA does a clone share with it's parent?
Answer: if its anasexual its 75%-100 if its a sexual its at a minimum of 50-25%
Explanation:
Which is the best example of a suspension
Answer:
Emulsions are a type of suspension, where two immiscible liquids are mixed together. Examples of suspended solutions include salt water, sand in water, and muddy water.
Explanation:
Which natural material is most often used to make paper?
Will give BRAINLY
Answer:
I believe that A Wood is correct