生物
细胞生物学、遗传学、生态学与生命科学基础。
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what are the building blocks of proteins called? rna codons amino acids…
C. Amino acids
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dna looks sort of like a weird ladder. the ungs\ of the ladder are the …
nitrogenous bases
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which step of baking cookies relates to the process of transcription? c…
Copying grandma's super secret recipe from her vault
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question 18 (1 point) what were some of the first global commons covere…
d) Antarctica
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which pairings below are correct? □ a with t & c with g □ a with c & t …
A with T & C with G
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this picture represents which process? translation transcription transm…
Translation
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a \specialized mass of capillaries\ that brings the blood to the kidney…
Glomerulus
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in what order do the two main steps of protein synthesis occur? transla…
Transcription and translation.
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the functional unit of the kidney is known as the ______. renal cortex …
nephron
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which step of baking cookies relates to the denaturing of proteins? put…
Putting cookies in the oven
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the bases in dna (& rna) are more accurately described as ______ bases.…
nitrogenous
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which nucleic acids are involved in translation? ○ mrna only ○ mrna and…
mRNA and tRNA
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what sugar is found in dna? sucrose glucose ribose deoxyribose rewatch
deoxyribose
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the process by which ribosomes read trna in order to build proteins. th…
the process by which ribosomes read mRNA in order to build proteins.
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definition saprophytic and parasitic spore-producing eukaryotic organis…
fungus
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what is the function of ureters? carries urine to the urinary bladder c…
carries urine to the urinary bladder
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franklin did not receive the nobel prize along with watson & crick beca…
she was passed away due to cancer.
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how many nitrogen bases does a codon contain? 3 1 2 4
3
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which one of the scientists below did not receive the nobel prize for t…
Franklin
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which two scientists from the list below won the nobel prize for discov…
Crick, Watson
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true or false. every cell in your body contains the same 6ft of dna (=i…
TRUE
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which step of baking cookies relates to the process of translation? usi…
Using a copied recipe to make grandma's cookies
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transcription is... the process by which dna from the nucleus is copied…
the process by which DNA from the nucleus is copied into RNA.
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what are the two major roles of excretory system? produce metabolic was…
C. Maintain osmotic balance, D. Remove metabolic waste from blood
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protein synthesis is... the process by which proteins are built in cell…
the process by which proteins are built in cells.
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which molecule copies code from the nucleus and delivers it to ribosome…
B. mRNA
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what strategic challenge did napoleon face in attempting to conquer gre…
Britain's position as an island with a strong navy.
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understanding feedback systems feedback is an important concept in scie…
14. Negative Feedback 15. Positive Feedback
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what part of the pedigree is the arrow pointing to? pedigree diagram wi…
consanguineous marriage
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what does a consanguineous marriage indicate in a pedigree? a marriage …
a marriage between close family members
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how many total offspring are shown on this pedigree chart? 28 17 2 4
17
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how many total female offspring are shown on this pedigree chart? 4 9 2…
9
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if normal blood ph is slightly basic and increased carbon dioxide level…
breathe faster to expel it from your body
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how many total female offspring are shown on this pedigree chart?
# Explanation: ## Step1: Identify female symbols In a pedigree chart, circles represent females. We need to count all the circle - shaped symbols that represent female offspring. …
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what does a filled circle or square represent in a pedigree? a complete…
an individual affected by a genetic disorder (the fourth option: "an individual affected by a genetic disorder")
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is most of your breathing voluntary or involuntary? involuntary volunta…
involuntary
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what blood vessels help with gas exchange? veins arteries capillaries r…
capillaries
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scientists have studied the bones of whales. they discovered bones in t…
Whales must share a common ancestor with animals that are able to walk on land; Whales have changed over time. The fossil record provides evidence of evolutionary descent.
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the afrikaner population of south africa is descended from a few coloni…
C. The small population size means that the new colony may have reduced genetic variation from the original population and that variation includes the dominant allele for Huntingt…
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identify how scientists use vestigial structures to infer evolutionary …
Around the human ear are tiny, weak muscles. They no longer serve a purpose. This means that a common ancestor once used those muscles to move their ears in response to sound.
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part a there are four mechanisms that can cause changes in the frequenc…
A. In a population, it's the changes in allelic frequencies of a gene that are due to chance.
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part b if the shrimp at the bottom of this food chain has a total of 10…
B. 10 units
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part a what is the major component missing from this food chain in orde…
A. there are no producers
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which process occurs in the chloroplast? photosynthesis lactic acid fer…
Photosynthesis (the checkbox next to "Photosynthesis" should be selected)
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energy in a food web part a what is the major component missing from th…
PART A: A. there are no producers PART B: 10 units (standard result; if option A is 1, likely display error)
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cellular reproduction cellular reproduction \t\tmitosis\tmeiosis which …
C. 46 chromosomes
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select the correct statement(s). homologous structures may have a commo…
- Homologous structures may have a common origin. They may not have a common function. - The ancestral tetrapod is the common ancestor to the crocodile and bird. Also, to the ceta…
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which statement correctly describes the diagram? a the process in which…
C. The process in which carbon dioxide is used also forms glucose.
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what is the role of the beaver in its ecosystem? a it is a foundation s…
B. It is a keystone species that modifies its natural environment by damming streams to form wetlands.
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select the correct statement(s). the size of each genus got larger over…
The genus Equus is closely related to Pliohippus. We know this because they have the most similar anatomical features. A living genus can share ancestors with a genus that is now …
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multiple-choice question what does the mitochondria do? produce energy …
A. Produce energy for the cell
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developers in florida are building a new theme park that includes sever…
C. Decreasing distance between habitats increases the likelihood of interaction.
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according to the diagram provided, which statement is not true regardin…
B. Caecilians are more related to sharks than caecilians and frogs and toads.
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according to cell theory, scientists do not classify a virus as living …
C. cellular structure.
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what are some functions of the golgi complex? sorting and packaging pro…
Sorting and packaging (the checkbox next to "Sorting and packaging" should be selected)
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select the statement(s) that are correct about the diagram. b is more c…
- B is more closely related to A than G. - There are more differences between the organisms when they have a less recent common ancestor. - All organisms share a common ancestor, …
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in class, students were given this image taken from a microscope. based…
eukaryotic
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within a population of moths, the color black (b) is dominant over the …
B. p = .8; q = .2
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50 of 60 which of these is a likely outcome of the image? a allele freq…
C. Gene flow occurs between populations.
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when the first antibiotics became available in the late 1940s and early…
D. Bacteria have become resistant to antibiotics over time due to evolution by means of natural selection.
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there are four mechanisms that can cause changes in the frequencies of …
D. There is variation in a population; differential reproduction occurs and over time, a more advantageous trait exists in the population.
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second group was fed food containing mostly maltose. after eight genera…
B. Allopatric speciation results when a geographic barrier separates members of a population, D. One premise behind speciation is that in any population, variation exists.
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what is the function of the nucleus? make energy store dna and act as t…
The correct option is: store DNA and act as the control center.
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identify the causes of genetic variation as associated either with mend…
Inheritance: Co-dominance, Incomplete Dominance Mutation: Amplification, Virus, Deletion
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a man with type a blood marries a woman with type b. their offspring al…
A. codominance.
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which statement is true for asexual reproduction? a genetic information…
D. Genetic information from a single parent is copied and passed on to form offspring with the same genetic information.
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sickle cell disease in an inherited blood disorder. it is a recessive t…
B. heterozygous
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cystic fibrosis is an autosomal recessive disease. if parents, both suf…
D. 100%
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non-mendelian inheritance patterns can be sorted into three categories:…
B. Color blindness
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this model shows the process of transcription. which of these best expl…
B. DNA serves as the template for making RNA, C. RNA copies a small segment of DNA using RNA polymerase, D. DNA contains the entire genome, but in transcription, a small segment i…
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adult animal organisms have cell division and mitosis to grow, maintain…
A. G1 the check point allows an animal cell becomes commited to the cell cycle, which is determined by external factors and signals.
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question 10 (10 points) what does the term ectotherm mean? a) their met…
d) They must obtain heat from the environment.
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in the near future gene therapy may provide cures for genetic disorders…
A. viruses
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question 9 (10 points) which organisms have bilateral symmetry, a gastr…
G. flatworms
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question 8 (10 points) which organisms are by far the most numerous and…
f) arthropods
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which organisms are a phylum of soft-bodied animals, many of which are …
d) mollusks
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question 6 (10 points) which organisms have bilateral symmetry, a compl…
A. mollusks
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for this activity, imagine you have been tasked with setting up the lan…
A structured step-by-step plan for setting up the secure LAN/VLAN as outlined above.
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question 5 (10 points) which organism lacks body symmetry and tissues? …
e) sponges
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the process of meiosis is essential in the sexual reproduction and life…
A. Increasing genetic diversity ensures that no two haploid gametes are exactly the same, B. Taking a diploid cell to its haploid state occurs during the first cell division of me…
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which organisms have a tail at some point, a notocord, a hollow nerve c…
h) chordates
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a csi lab is presented with the remains of a man police believe to be t…
C. DNA fingerprinting
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31 of 60 consider the model of four kingdoms of organisms. what is the …
B. eukaryotic cell
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recent work in classification of life on earth has shown that what were…
A. is prokaryotic.
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question 3 (10 points) which organisms are radially symmetrical; they h…
d) cnidarians
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why do viruses need living hosts, such as bacteria or eukaryote cells? …
B. Viruses depend on the host cells that they infect to reproduce.
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question 2 (10 points) which group includes sea stars, sea urchins, sea…
g) echinoderms
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autotrophs and heterotrophs the characteristics describe organisms foun…
C. Eukarya.
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darren needs to show the ancestral relationship between two species. wh…
A. Diagram of human, whale, and bat forelimb skeletons
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4.2 - the rise of political parties and the era of jefferson explain th…
Social Science - History (and related subfields like Politics for policy - related questions)
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question 1 (10 points) which organisms have bilateral symmetry, a compl…
g) annelids
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26 of 60 geospiza parvula certhidia olivescea geospiza magnirostris geo…
A. Certhidia oliveacea because its tiny pointed bill is the best adapted to sip nectar.
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a species is a group of organisms capable of mating and producing ferti…
C. diverge
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the diagram shows different altitude zones for the alps and surrounding…
D. the Subalpine zone
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which of the following statements can be inferred by this cladogram? a …
B. Great cormorants are more closely related to platypuses than walleyes.
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photosynthesis has two main parts (light-independent and light dependen…
D. II, III, IV, and VI
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the nucleotides thymine, guanine, cytosine, and adenine are used as bui…
D. Protein synthesis
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which of these best describes the primary goal of meiosis? a the nucleu…
D. Daughter cells are produced with only half the chromosomes of the parent cell.
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a plant cell remains unchanged in shape or size when it is kept in a so…
B. isotonic solution
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cell drinking, cell eating. both are modeled here and are examples of a…
C. endocytosis