What is the trophic level of the robin in this food chain? Oak tree > caterpillar > robin > fox
a) first-level consumer
b) third-level consumer
c) producer
d) second-level consumer
Ans: d) second-level consumer
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All of these statements about Chlamydomonas are true, EXCEPT
A. chlamydomonas has two flagella. B. each motile Chlamydomonas cell has a single haploid nucleus. C. chlamydomonas only reproduces asexually. D. chlamydomonas is photoautotrophic.
Match the phase of meiosis that best matches each event.
A) prophase II B) metaphase II C) telophase II D) anaphase II E) metaphase I F) prophase I G) telophase I H) anaphase I 1) aligning of bivalents along the center of the cell 2) genetic recombination events take place 3) separation of homologous chromosomes 4) at opposite poles, a 2n number of chromosomes are present 5) synapsis and crossover events 6) aligning of monovalents along the center of the cell 7) at opposite poles, a 1n number of chromosomes 8) pairing of homologous chromosomes 9) chiasmata are visible 10) separation of sister chromatids
Human microbiome summary
What will be an ideal response?
The human genome has _______ chromosomes.
a. 46 b. 64 c. 42 d. 23