Answer:
The light reactions of many algae differ from those of land plants because some of them use different pigments to harvest light. Chlorophylls absorb primarily blue and red light, whereas carotenoids absorb primarily blue and green light, and phycobiliproteins absorb primarily blue or red light. Since the amount of light absorbed depends upon the pigment composition and concentration found in the alga, some algae absorb more light at a given wavelength, and therefore, potentially, those algae can convert more light energy of that wavelength to chemical energy via photosynthesis. All algae use chlorophyll a to collect photosynthetically active light. Green algae and euglenophytes also use chlorophyll b. In addition to chlorophyll a, the remaining algae also use various combinations of other chlorophylls, chlorophyllides, carotenoids, and phycobiliproteins to collect additional light from wavelengths of the spectrum not absorbed by chlorophyll a or b. The chromophyte algae, dinoflagellates, cryptomonads (class Cryptophyceae), and the class Micromonadophyceae, for example, also use chlorophyllides. (Chlorophyllides, often incorrectly called chlorophylls, differ from true chlorophylls in that they lack the long, fat-soluble phytol tail that is characteristic of chlorophylls.) Some green algae use carotenoids for harvesting photosynthetically active light, but the Dinophyceae and chromophyte algae almost always use carotenoids. Phycobiliproteins, which appear either blue (phycocyanins) or red (phycoerythrins), are found in red algae and cryptomonads.
Explanation:
sana makatulong
What usually happens in the tropical rainforest
Tropical rainforests occur in regions of the tropics where temperatures are always high and where rainfall exceeds about 1,800 to 2,500 mm (about 70 to 100 inches) annually and occurs fairly evenly throughout the year.
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What protects the living organisms on the earth from extreme heat and extreme cold?
A. solar system
B. revolution
C. atmosphere
D. changing seasons
Answer:
C) Atmosphere
Explanation:
The atmosphere protects the living organisms on earth from extreme heat and extreme cold.
Answer:
C the atmosphere
Explanation:
Which of the following takes care of the need to decompose dead material?
O carnivores
O herbivores
O plants
Oscavengers
Plz help
Answer:
scavengers
Explanation:
these are the animals that feed on carrion, dead plants,or refuse.
There are three different alleles for the gene that determines blood type: A, B, and 0. This
type of inheritance pattern is an example of:
The type of inheritance pattern that represents an example of three different alleles that determine blood type is known as Codominance.
What is Codominance?Codominance may be defined as a type of inheritance pattern in which the alleles are able to express themselves independently even when present together. This biological phenomenon is known as codominance.
ABO blood grouping in humans represents an example of codominance in which it is controlled by gene I which has three different alleles. Due to the three different alleles of gene I also represent an example of multiple alleles.
Therefore, the type of inheritance pattern that represents an example of three different alleles that determine blood type is known as Codominance.
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It was field day at school. The sun was bright and the temperature high. Most of the students wore light colored T-shirts to stay cool
because dark colors
most wavelengths found in white light.
A)
absorb
B)
reflect
refract
D
subtracts
Hint
You can get a sunburn in the snow!
B
Motions Forces and Energy
Hint
Answer:
A. absorb
Explanation:
Experience
ALL living organsims can absrob nitrogen as free gas.
A True
B False
Answer: FALSE is my best guess on this one.
if it's wrong I'm sorry i dinin't help you on this and have a great day
In the first step of pollination, _____ from the male anther is transferred to the female _____. The pollen grain is then carried down the _____ to the ovary. Inside it meets with an ______. This is the process of fertilization.
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Answer:
1. pollen grains
2. stigma
3. style
4. egg cell of an ovule
When water seeps into the ground the hydrosphere is interacting with what sphere?
Answer:
When water falls and seeps into the ground it actually interacts with the lithosphere
Which of the following decreases the population size?
a. favorable light and temperatures
b. adequate food supply
c. unable to compete
d. able to migrate, hide, or defend
e. able to resist disease
Explanation:
able to migrate,hide or defend
Ecologists are interested in quantifying different kinds of biodiversity. In each of the two studies outlined here, which kind of biodiversity are ecologists studying?
Ecologists establish 20 small areas, called plots, randomly scattered across a California grassland. They count the number of different plant species present in each plot.
By noting how many species appear in the plots, the ecologists are able to estimate the number of species in the entire grassland.
a. Genetic diversity
b. Functional diversity
c.Ecosystem diversity
d. Species diversity
Ecologists draw blood samples from basking shark (Cetorhinus maximus) specimens caught from a single large population in the Atlantic Ocean. From each blood sample, the ecologists isolate DNA. Comparing several DNA sequences across the individuals that were sampled, the ecologists are able to estimate the variation in DNA sequences in the entire population.
a. Genetic diversity
b. Ecosystem diversity
c. Species diversity
d. Functional diversity
One way to think about the importance of biodiversity is simply to think in terms of natural capital: the roles that genes, species, ecosystems, and ecological processes play in supporting human society and a healthy biosphere. Which of the following are benefits provided by biodiversity?
a. Controlling pests
b. Providing medically useful chemicals
c. Keeping topsoil fertile
d. Eliminating the ozone hole
Answer:
1. --> d. Species diversity
2. --> a. Genetic diversity
3. --> a. Controlling pests, b. Providing medically useful chemicals , and c. Keeping topsoil fertile
Explanation:
1) Kinds of biodiversity
Genetic diversity: Among species. Refers to genes variability among species that differentiate them and allows them to adapt to different environments. The genetic charge of one species differs from other species´ genetic charge. Species diversity: Refers to the diversity of species, which can be measured by: Species richness: Number of species in a defined unit sample, Species abundance: Describe the distribution of the species abundance.Species richness is the number of species present in a sample, within a community, habitat or microhabitat, ecosystem, landscape, region, or any well-defined spatial unit. It is simple and easy to interpret. It is the simplest and straightforward measure of biodiversity. It is just a count of species, with no need for abundance data. In some cases, this can be the cause of criticism, as it ignores information about the species-abundance distribution.
2) Ecosystem services
When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:
Provision or supply:These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear fresh-water, fertile soils, geotic materials, raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.
Regulation:Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.
Cultural:Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, to learn, provides a spiritual/religious space, is a source of inspiration, it is considered to be cultural patrimony, and the source of scientific knowledge.
why is there a crisis if "energy can neither be created or destroyed"?
Answer: Scientists say that energy can neither be created nor destroyed, so therefore it is impossible for there to be an energy crisis.
Explanation:
I'm pretty sure I'm right
Answer:
There is a problem because if energy is created as machines worked everything would speed up until it breaks, and if energy was destroyed as machines worked everything would eventually slow down and stop. So in both cases the world would end, a whimper in one a bang in the other.
Explanation:
Reference: How things Work Now(book)
What is true of adaptations?
the answer is
They are passed along to offspring
Answer:
They are passed along to offspring
Explanation:
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Which of the following is not released by sweat glands?
A. Water. B. Salt.c.waste d.oil
Answer:
c. Waste
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Explanation:
Hatdog
Question 10
1.25
Perception, thinking, language, problem-solving, and creativity are topics of investigation for those interested in:
O A. Humanistic psychology
ОВ.
Introspection
oc. Cognitive psychology
Structuralism
OD
L A Moving to the next question prevents changes to this answer.
ere to search
The neurotransmitter thought to be involved in learning and memory is
x acetylcholine.
norepinephrine.
glutamate.
glycine
GABA
Biologically important tautomers involve Biologically important tautomers involve blankfor thymine and guanine and blank for cytosine and adenine.
a. True
b. False
Answer:
The correct answer is B.
Explanation:
Adenine and guanine are purine bases, thymine and cytosine are pyrimidines which make up the structure of the DNA. They are not tautomers. They can however get involved in tautomerism which is the transfer of protons and electrons between chemical compounds that are usually structurally isomers. So the answer is B.
I hope this helps.
wh is cell called the functional unit of life?
Answer:
because the cell is the smaller unit that has the properties of life
Explanation:
There are three basic principles/statements that are the basis of the unified cell theory, which was proposed by Matthias Schleiden and Theodor Schwann in 1838. All living organisms are composed of cells (first principle), whereby cells can be considered as the basic, structural and organizational units of all organisms (second principle). Moreover, new cells always arise from existing cells (third principle). In consequence, the cell is the smaller unit that has the properties of life in order to carry out all metabolic processes including reproduction, growth, development, etc.
Cohesion, surface tension, and adhesion are the properties of water molecules that ________
Answer:
Hydrogen bonding
Explanation:
Hydrogen bonds between surface water molecules resist being stretched.
Cohesion, surface tension, and adhesion are the properties of water molecules that are all a result of hydrogen bonding.
Hydrogen bonding is a transient intermolecular force caused by the electrical attraction between partially positive hydrogen atoms and partially negative F, O, or N atoms.
The attraction between partially positive hydrogen atoms and partially negative oxygen atoms of adjacent water molecules that form hydrogen bonding takes place in water.The differences in electronegativity between hydrogen and oxygen atoms lead to associated properties that are Cohesion, surface tension, and adhesion. Cohesion - Attraction between water moleculesAdhesion - the attraction between the water molecules and other compounds.The surface tension - sticking of water molecules to one anotherThus, the correct answer is - are all a result of hydrogen bonding.
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In a scientific experiment, a
changed
is any factor that can change or be
A. hypothesis
B. causation
ОООО
C. conclusion
D. variable
SUBMIT
In 4-5 sentences, explain why it is important for our cells to undergo the cell cycle.
Answer:
If our cells don't undergo the cell cycle, our body will run out of cells and we'll maybe suffer from diseases and the cells in our body isn't able to fight the disease and we might die. Our body is made up of good cells which protects our health.
What do you mean by "in atleast 5 sentences" We were asked to write about typhoon Yolanda in atleast 5 sentences. So what do you mean by that?
Pls help.
Answer:It means in 5 sentences write about typhoon Yolanda
Explanation:
Which neurotransmitter is a major regulator of mood and behavior and can be chemically altered using drugs like Prozac or Zoloft?
a) nitric oxide
b) substance P
c) norepinephrine
d) serotonin
e) acetylcholine
Explanation:
Serotonin is an inhibitory neurotransmitter that responsible for regulating the bodies mood and behavior in the central nervous system and affect the functions of the entire body. Prozac and Zoloft are antidepressants that help retain more serotonin neurotransmitters in neurons.
Answer:
d) serotonin
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how are food webs and energy pyramids different
Answer:
energy pyramids shows importance
and webs show how everything is connected
Explanation:
compares and contrasts transformation, transduction, and conjugation
Answer:
In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.
Explanation:
Compare and contrast the digestive system of amoeba and planaria
Answer:
Amoeba is unicellular and is very primitive compared to planaria.
Planaria is advance and evolurionary, stands at a higher level being included in flatworms.
plzzzzzzz help my lil sister out she wont stop texting me while im working
Answer:
False
Explanation:
It will only be 78% in 2040
Answer:
False.
Explanation:
63% of our energy comes from fossil fuels.
8. a) How are the events in the menstrual cycle triggered by the body? (1 point)
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There is a supply of undeveloped eggs in the ovaries. At the beginning of the menstrual cycle, between 6 and 12 undeveloped eggs in the ovaries start to mature. A layer of cells grows around them. At around day 5 of the menstrual cycle, the biggest follicle will continue to grow for another week. At around day 14, the follicle breaks apart, and the wall of the ovary ruptures. The egg is released from the ovary into the fallopian tube, where it can get fertilized. This process is called ovulation. The uterus also changes during the course of the menstrual cycle. It has a lining of cells on the inside, kind of like a cushion with a lot of blood vessels. Fallopian tubes connect the ovaries and the uterus. The uterine cycle begins with menstruation. This is the process through which most of the lining and blood from the last uterine cycle are cleared out of the uterus to prepare for a new attempt at pregnancy. Starting at around day 5, the lining starts to grow. It builds back up to prepare a place for the egg to grow if it gets fertilized. After ovulation, the egg reaches the oviduct. If sperm cells have entered the vagina during intercourse, fertilization may occur at any time in the next two weeks. Then the fertilized egg will move into the uterus and implant itself into the lining, where development will begin.
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The events in the menstrual cycle are primarily triggered by hormonal signals from the body. The menstrual cycle is a complex process regulated by the interplay of hormones produced by the hypothalamus, pituitary gland, and ovaries.
1. Hypothalamus: The hypothalamus, a region of the brain, releases gonadotropin-releasing hormone (GnRH) in a pulsatile manner. GnRH stimulates the pituitary gland.
2. Pituitary gland: In response to GnRH, the pituitary gland secretes two important hormones: follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
3. Follicular phase: At the beginning of the menstrual cycle, FSH stimulates the growth and maturation of ovarian follicles, which contain the developing eggs (oocytes).
As the follicles grow, they produce estrogen, a hormone that helps prepare the uterus for a possible pregnancy.
4. Ovulation: As the estrogen levels rise, it triggers a surge in LH production by the pituitary gland. The LH surge leads to the release of a mature egg from the ovary, a process called ovulation.
5. Luteal phase: After ovulation, the ruptured follicle in the ovary transforms into a structure called the corpus luteum. The corpus luteum produces progesterone, which prepares the uterus for potential implantation of a fertilized egg.
6. Menstruation: If pregnancy does not occur, the levels of estrogen and progesterone decline. This drop in hormone levels triggers the shedding of the uterine lining, resulting in menstrual bleeding.
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Use the forked-line method to solve this problem (SHOW YOUR WORK): In cucumbers, there are 3 genetic traits, as follows: dull fruit is dominant to glossy fruit orange fruit color is dominant to cream fruit color bitter cotyledons are dominant to nonbitter cotyledons You cross a plant that is heterozygous for all 3 genes to another plant that is heterozygous for dull fruit but has cream fruit color and nonbitter cotyledons. Among the next generation, what proportion of the offspring will be a) dull, orange, bitter b) glossy, cream, nonbitter c) heterozygous for all 3 genes (HINT: it's not the same answer as a) above
Answer:
a) dull, orange, bitter ----> 3/16 D- Oo Bb
b) glossy, cream, nonbitter ---> 1/16 dd oo bb
c) heterozygous for all 3 genes ---> 2/16 Dd Oo Bb
Explanation:
Available data:
dull fruit (D-) is dominant to glossy fruit (dd)orange fruit color (O-) is dominant to cream fruit color (oo)bitter cotyledons (B-) are dominant to non-bitter cotyledons (bb)Cross: a plant heterozygous for all 3 genes with a plant that is heterozygous for dull fruit but has cream fruit color and non-bitter cotyledons.Parentals) Dd Oo Bb x Dd oo bb
To get the proportions of the offspring using the forked-line method, we must analyze each gene separately.
D gene:
Parentals) Dd x Dd
Gametes ) D d D d
Punnett square) D d
D DD Dd
d dD dd
F1) 1/4 DD
2/4 Dd
1/4 dd
O gene:
Parentals) Oo x oo
Gametes) O o o o
Punnett square) O o
o Oo oo
o Oo oo
F1) 1/2 Oo
1/2 oo
B gene:
Parentals) Bb x bb
Gametes) B b b b
Punnett square) B b
b Bb bb
b Bb bb
F1) 1/2 Bb
1/2 bb
What proportion of the offspring will be
a) dull, orange, bitter
(1/4 DD + 2/4 Dd) x 1/2 Oo x 1/2 Bb = 3/4 D- x 1/2 Oo x 1/2 Bb
3/16 D- Oo Bb
b) glossy, cream, nonbitter
1/4 dd x 1/2 oo x 1/2 bb
1/16 dd oo bb
c) heterozygous for all 3 genes
2/4 Dd x 1/2 Oo x 1/2 Bb
2/16 Dd Oo Bb
PLEASE HELP ME !!!!!!!!
Answer:
1 eubacteria
2 archaebacteria
3 eubacteria
4 animalia
5. protista
6. protista
7 archae bacteria
8plants
9 fungi
10 fungi
11 protista
12 protista
13. eubacteria
14. fungi
15 fungi
16 plants
17 protista
18 eubacteria
19 animalia
20 archaebacteria
21. protista
22. animalia
23eubacteria
24 likely fungi though archae and protista and eubacteria would fit too
Explanation:
As atmospheric CO2 increases, the amount of CO2 dissolved in seawater is expected to increase as well. This produces more carbonic acid, which then dissociates into hydrogen ions and something else.
Answer:
(HCO3-) bicarbonate
Explanation:
